diff options
Diffstat (limited to 'fs')
101 files changed, 887 insertions, 445 deletions
diff --git a/fs/9p/vfs_addr.c b/fs/9p/vfs_addr.c index 6181ad79e1a5..5ca1fb0043f6 100644 --- a/fs/9p/vfs_addr.c +++ b/fs/9p/vfs_addr.c @@ -34,6 +34,7 @@ #include <linux/idr.h> #include <linux/sched.h> #include <linux/uio.h> +#include <linux/bvec.h> #include <net/9p/9p.h> #include <net/9p/client.h> diff --git a/fs/Kconfig.binfmt b/fs/Kconfig.binfmt index 4c09d93d9569..b2f82cf6bf86 100644 --- a/fs/Kconfig.binfmt +++ b/fs/Kconfig.binfmt @@ -170,8 +170,8 @@ config BINFMT_MISC You can do other nice things, too. Read the file <file:Documentation/binfmt_misc.txt> to learn how to use this - feature, <file:Documentation/java.txt> for information about how - to include Java support. and <file:Documentation/mono.txt> for + feature, <file:Documentation/admin-guide/java.rst> for information about how + to include Java support. and <file:Documentation/admin-guide/mono.rst> for information about how to include Mono-based .NET support. To use binfmt_misc, you will need to mount it: diff --git a/fs/binfmt_elf.c b/fs/binfmt_elf.c index 2472af2798c7..e6c1bd443806 100644 --- a/fs/binfmt_elf.c +++ b/fs/binfmt_elf.c @@ -2204,7 +2204,9 @@ static int elf_core_dump(struct coredump_params *cprm) dataoff = offset = roundup(offset, ELF_EXEC_PAGESIZE); - vma_filesz = kmalloc_array(segs - 1, sizeof(*vma_filesz), GFP_KERNEL); + if (segs - 1 > ULONG_MAX / sizeof(*vma_filesz)) + goto end_coredump; + vma_filesz = vmalloc((segs - 1) * sizeof(*vma_filesz)); if (!vma_filesz) goto end_coredump; @@ -2311,7 +2313,7 @@ end_coredump: cleanup: free_note_info(&info); kfree(shdr4extnum); - kfree(vma_filesz); + vfree(vma_filesz); kfree(phdr4note); kfree(elf); out: diff --git a/fs/block_dev.c b/fs/block_dev.c index 05b553368bb4..95acbd2ebc5d 100644 --- a/fs/block_dev.c +++ b/fs/block_dev.c @@ -30,6 +30,7 @@ #include <linux/cleancache.h> #include <linux/dax.h> #include <linux/badblocks.h> +#include <linux/task_io_accounting_ops.h> #include <linux/falloc.h> #include <asm/uaccess.h> #include "internal.h" @@ -175,17 +176,273 @@ static struct inode *bdev_file_inode(struct file *file) return file->f_mapping->host; } +static unsigned int dio_bio_write_op(struct kiocb *iocb) +{ + unsigned int op = REQ_OP_WRITE | REQ_SYNC | REQ_IDLE; + + /* avoid the need for a I/O completion work item */ + if (iocb->ki_flags & IOCB_DSYNC) + op |= REQ_FUA; + return op; +} + +#define DIO_INLINE_BIO_VECS 4 + +static void blkdev_bio_end_io_simple(struct bio *bio) +{ + struct task_struct *waiter = bio->bi_private; + + WRITE_ONCE(bio->bi_private, NULL); + wake_up_process(waiter); +} + static ssize_t -blkdev_direct_IO(struct kiocb *iocb, struct iov_iter *iter) +__blkdev_direct_IO_simple(struct kiocb *iocb, struct iov_iter *iter, + int nr_pages) +{ + struct file *file = iocb->ki_filp; + struct block_device *bdev = I_BDEV(bdev_file_inode(file)); + struct bio_vec inline_vecs[DIO_INLINE_BIO_VECS], *vecs, *bvec; + loff_t pos = iocb->ki_pos; + bool should_dirty = false; + struct bio bio; + ssize_t ret; + blk_qc_t qc; + int i; + + if ((pos | iov_iter_alignment(iter)) & + (bdev_logical_block_size(bdev) - 1)) + return -EINVAL; + + if (nr_pages <= DIO_INLINE_BIO_VECS) + vecs = inline_vecs; + else { + vecs = kmalloc(nr_pages * sizeof(struct bio_vec), GFP_KERNEL); + if (!vecs) + return -ENOMEM; + } + + bio_init(&bio, vecs, nr_pages); + bio.bi_bdev = bdev; + bio.bi_iter.bi_sector = pos >> 9; + bio.bi_private = current; + bio.bi_end_io = blkdev_bio_end_io_simple; + + ret = bio_iov_iter_get_pages(&bio, iter); + if (unlikely(ret)) + return ret; + ret = bio.bi_iter.bi_size; + + if (iov_iter_rw(iter) == READ) { + bio.bi_opf = REQ_OP_READ; + if (iter_is_iovec(iter)) + should_dirty = true; + } else { + bio.bi_opf = dio_bio_write_op(iocb); + task_io_account_write(ret); + } + + qc = submit_bio(&bio); + for (;;) { + set_current_state(TASK_UNINTERRUPTIBLE); + if (!READ_ONCE(bio.bi_private)) + break; + if (!(iocb->ki_flags & IOCB_HIPRI) || + !blk_mq_poll(bdev_get_queue(bdev), qc)) + io_schedule(); + } + __set_current_state(TASK_RUNNING); + + bio_for_each_segment_all(bvec, &bio, i) { + if (should_dirty && !PageCompound(bvec->bv_page)) + set_page_dirty_lock(bvec->bv_page); + put_page(bvec->bv_page); + } + + if (vecs != inline_vecs) + kfree(vecs); + + if (unlikely(bio.bi_error)) + return bio.bi_error; + iocb->ki_pos += ret; + return ret; +} + +struct blkdev_dio { + union { + struct kiocb *iocb; + struct task_struct *waiter; + }; + size_t size; + atomic_t ref; + bool multi_bio : 1; + bool should_dirty : 1; + bool is_sync : 1; + struct bio bio; +}; + +static struct bio_set *blkdev_dio_pool __read_mostly; + +static void blkdev_bio_end_io(struct bio *bio) +{ + struct blkdev_dio *dio = bio->bi_private; + bool should_dirty = dio->should_dirty; + + if (dio->multi_bio && !atomic_dec_and_test(&dio->ref)) { + if (bio->bi_error && !dio->bio.bi_error) + dio->bio.bi_error = bio->bi_error; + } else { + if (!dio->is_sync) { + struct kiocb *iocb = dio->iocb; + ssize_t ret = dio->bio.bi_error; + + if (likely(!ret)) { + ret = dio->size; + iocb->ki_pos += ret; + } + + dio->iocb->ki_complete(iocb, ret, 0); + bio_put(&dio->bio); + } else { + struct task_struct *waiter = dio->waiter; + + WRITE_ONCE(dio->waiter, NULL); + wake_up_process(waiter); + } + } + + if (should_dirty) { + bio_check_pages_dirty(bio); + } else { + struct bio_vec *bvec; + int i; + + bio_for_each_segment_all(bvec, bio, i) + put_page(bvec->bv_page); + bio_put(bio); + } +} + +static ssize_t +__blkdev_direct_IO(struct kiocb *iocb, struct iov_iter *iter, int nr_pages) { struct file *file = iocb->ki_filp; struct inode *inode = bdev_file_inode(file); + struct block_device *bdev = I_BDEV(inode); + struct blkdev_dio *dio; + struct bio *bio; + bool is_read = (iov_iter_rw(iter) == READ); + loff_t pos = iocb->ki_pos; + blk_qc_t qc = BLK_QC_T_NONE; + int ret; + + if ((pos | iov_iter_alignment(iter)) & + (bdev_logical_block_size(bdev) - 1)) + return -EINVAL; + + bio = bio_alloc_bioset(GFP_KERNEL, nr_pages, blkdev_dio_pool); + bio_get(bio); /* extra ref for the completion handler */ + + dio = container_of(bio, struct blkdev_dio, bio); + dio->is_sync = is_sync_kiocb(iocb); + if (dio->is_sync) + dio->waiter = current; + else + dio->iocb = iocb; + + dio->size = 0; + dio->multi_bio = false; + dio->should_dirty = is_read && (iter->type == ITER_IOVEC); + + for (;;) { + bio->bi_bdev = bdev; + bio->bi_iter.bi_sector = pos >> 9; + bio->bi_private = dio; + bio->bi_end_io = blkdev_bio_end_io; + + ret = bio_iov_iter_get_pages(bio, iter); + if (unlikely(ret)) { + bio->bi_error = ret; + bio_endio(bio); + break; + } + + if (is_read) { + bio->bi_opf = REQ_OP_READ; + if (dio->should_dirty) + bio_set_pages_dirty(bio); + } else { + bio->bi_opf = dio_bio_write_op(iocb); + task_io_account_write(bio->bi_iter.bi_size); + } + + dio->size += bio->bi_iter.bi_size; + pos += bio->bi_iter.bi_size; + + nr_pages = iov_iter_npages(iter, BIO_MAX_PAGES); + if (!nr_pages) { + qc = submit_bio(bio); + break; + } + + if (!dio->multi_bio) { + dio->multi_bio = true; + atomic_set(&dio->ref, 2); + } else { + atomic_inc(&dio->ref); + } - return __blockdev_direct_IO(iocb, inode, I_BDEV(inode), iter, - blkdev_get_block, NULL, NULL, - DIO_SKIP_DIO_COUNT); + submit_bio(bio); + bio = bio_alloc(GFP_KERNEL, nr_pages); + } + + if (!dio->is_sync) + return -EIOCBQUEUED; + + for (;;) { + set_current_state(TASK_UNINTERRUPTIBLE); + if (!READ_ONCE(dio->waiter)) + break; + + if (!(iocb->ki_flags & IOCB_HIPRI) || + !blk_mq_poll(bdev_get_queue(bdev), qc)) + io_schedule(); + } + __set_current_state(TASK_RUNNING); + + ret = dio->bio.bi_error; + if (likely(!ret)) { + ret = dio->size; + iocb->ki_pos += ret; + } + + bio_put(&dio->bio); + return ret; } +static ssize_t +blkdev_direct_IO(struct kiocb *iocb, struct iov_iter *iter) +{ + int nr_pages; + + nr_pages = iov_iter_npages(iter, BIO_MAX_PAGES + 1); + if (!nr_pages) + return 0; + if (is_sync_kiocb(iocb) && nr_pages <= BIO_MAX_PAGES) + return __blkdev_direct_IO_simple(iocb, iter, nr_pages); + + return __blkdev_direct_IO(iocb, iter, min(nr_pages, BIO_MAX_PAGES)); +} + +static __init int blkdev_init(void) +{ + blkdev_dio_pool = bioset_create(4, offsetof(struct blkdev_dio, bio)); + if (!blkdev_dio_pool) + return -ENOMEM; + return 0; +} +module_init(blkdev_init); + int __sync_blockdev(struct block_device *bdev, int wait) { if (!bdev) @@ -1950,6 +2207,7 @@ void iterate_bdevs(void (*func)(struct block_device *, void *), void *arg) spin_lock(&blockdev_superblock->s_inode_list_lock); list_for_each_entry(inode, &blockdev_superblock->s_inodes, i_sb_list) { struct address_space *mapping = inode->i_mapping; + struct block_device *bdev; spin_lock(&inode->i_lock); if (inode->i_state & (I_FREEING|I_WILL_FREE|I_NEW) || @@ -1970,8 +2228,12 @@ void iterate_bdevs(void (*func)(struct block_device *, void *), void *arg) */ iput(old_inode); old_inode = inode; + bdev = I_BDEV(inode); - func(I_BDEV(inode), arg); + mutex_lock(&bdev->bd_mutex); + if (bdev->bd_openers) + func(bdev, arg); + mutex_unlock(&bdev->bd_mutex); spin_lock(&blockdev_superblock->s_inode_list_lock); } diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c index 3a57f99d96aa..fe10afd51e02 100644 --- a/fs/btrfs/disk-io.c +++ b/fs/btrfs/disk-io.c @@ -930,7 +930,7 @@ int btrfs_wq_submit_bio(struct btrfs_fs_info *fs_info, struct inode *inode, atomic_inc(&fs_info->nr_async_submits); - if (bio->bi_opf & REQ_SYNC) + if (op_is_sync(bio->bi_opf)) btrfs_set_work_high_priority(&async->work); btrfs_queue_work(fs_info->workers, &async->work); @@ -3485,9 +3485,9 @@ static int write_dev_supers(struct btrfs_device *device, * to go down lazy. */ if (i == 0) - ret = btrfsic_submit_bh(REQ_OP_WRITE, WRITE_FUA, bh); + ret = btrfsic_submit_bh(REQ_OP_WRITE, REQ_FUA, bh); else - ret = btrfsic_submit_bh(REQ_OP_WRITE, WRITE_SYNC, bh); + ret = btrfsic_submit_bh(REQ_OP_WRITE, REQ_SYNC, bh); if (ret) errors++; } @@ -3551,7 +3551,7 @@ static int write_dev_flush(struct btrfs_device *device, int wait) bio->bi_end_io = btrfs_end_empty_barrier; bio->bi_bdev = device->bdev; - bio_set_op_attrs(bio, REQ_OP_WRITE, WRITE_FLUSH); + bio->bi_opf = REQ_OP_WRITE | REQ_PREFLUSH; init_completion(&device->flush_wait); bio->bi_private = &device->flush_wait; device->flush_bio = bio; diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c index 8ed05d95584a..1e67723c27a1 100644 --- a/fs/btrfs/extent_io.c +++ b/fs/btrfs/extent_io.c @@ -127,7 +127,7 @@ struct extent_page_data { */ unsigned int extent_locked:1; - /* tells the submit_bio code to use a WRITE_SYNC */ + /* tells the submit_bio code to use REQ_SYNC */ unsigned int sync_io:1; }; @@ -2047,7 +2047,7 @@ int repair_io_failure(struct inode *inode, u64 start, u64 length, u64 logical, return -EIO; } bio->bi_bdev = dev->bdev; - bio_set_op_attrs(bio, REQ_OP_WRITE, WRITE_SYNC); + bio->bi_opf = REQ_OP_WRITE | REQ_SYNC; bio_add_page(bio, page, length, pg_offset); if (btrfsic_submit_bio_wait(bio)) { @@ -2388,7 +2388,7 @@ static int bio_readpage_error(struct bio *failed_bio, u64 phy_offset, struct inode *inode = page->mapping->host; struct extent_io_tree *tree = &BTRFS_I(inode)->io_tree; struct bio *bio; - int read_mode; + int read_mode = 0; int ret; BUG_ON(bio_op(failed_bio) == REQ_OP_WRITE); @@ -2404,9 +2404,7 @@ static int bio_readpage_error(struct bio *failed_bio, u64 phy_offset, } if (failed_bio->bi_vcnt > 1) - read_mode = READ_SYNC | REQ_FAILFAST_DEV; - else - read_mode = READ_SYNC; + read_mode |= REQ_FAILFAST_DEV; phy_offset >>= inode->i_sb->s_blocksize_bits; bio = btrfs_create_repair_bio(inode, failed_bio, failrec, page, @@ -3484,7 +3482,7 @@ static int __extent_writepage(struct page *page, struct writeback_control *wbc, unsigned long nr_written = 0; if (wbc->sync_mode == WB_SYNC_ALL) - write_flags = WRITE_SYNC; + write_flags = REQ_SYNC; trace___extent_writepage(page, inode, wbc); @@ -3729,7 +3727,7 @@ static noinline_for_stack int write_one_eb(struct extent_buffer *eb, unsigned long i, num_pages; unsigned long bio_flags = 0; unsigned long start, end; - int write_flags = (epd->sync_io ? WRITE_SYNC : 0) | REQ_META; + int write_flags = (epd->sync_io ? REQ_SYNC : 0) | REQ_META; int ret = 0; clear_bit(EXTENT_BUFFER_WRITE_ERR, &eb->bflags); @@ -4076,7 +4074,7 @@ static void flush_epd_write_bio(struct extent_page_data *epd) int ret; bio_set_op_attrs(epd->bio, REQ_OP_WRITE, - epd->sync_io ? WRITE_SYNC : 0); + epd->sync_io ? REQ_SYNC : 0); ret = submit_one_bio(epd->bio, 0, epd->bio_flags); BUG_ON(ret < 0); /* -ENOMEM */ diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c index 8e3a5a266917..a4c879671b9d 100644 --- a/fs/btrfs/inode.c +++ b/fs/btrfs/inode.c @@ -7917,7 +7917,7 @@ static int dio_read_error(struct inode *inode, struct bio *failed_bio, struct io_failure_record *failrec; struct bio *bio; int isector; - int read_mode; + int read_mode = 0; int ret; BUG_ON(bio_op(failed_bio) == REQ_OP_WRITE); @@ -7936,9 +7936,7 @@ static int dio_read_error(struct inode *inode, struct bio *failed_bio, if ((failed_bio->bi_vcnt > 1) || (failed_bio->bi_io_vec->bv_len > BTRFS_I(inode)->root->sectorsize)) - read_mode = READ_SYNC | REQ_FAILFAST_DEV; - else - read_mode = READ_SYNC; + read_mode |= REQ_FAILFAST_DEV; isector = start - btrfs_io_bio(failed_bio)->logical; isector >>= inode->i_sb->s_blocksize_bits; @@ -8427,7 +8425,7 @@ static int btrfs_submit_direct_hook(struct btrfs_dio_private *dip, if (!bio) return -ENOMEM; - bio_set_op_attrs(bio, bio_op(orig_bio), bio_flags(orig_bio)); + bio->bi_opf = orig_bio->bi_opf; bio->bi_private = dip; bio->bi_end_io = btrfs_end_dio_bio; btrfs_io_bio(bio)->logical = file_offset; @@ -8465,8 +8463,7 @@ next_block: start_sector, GFP_NOFS); if (!bio) goto out_err; - bio_set_op_attrs(bio, bio_op(orig_bio), - bio_flags(orig_bio)); + bio->bi_opf = orig_bio->bi_opf; bio->bi_private = dip; bio->bi_end_io = btrfs_end_dio_bio; btrfs_io_bio(bio)->logical = file_offset; diff --git a/fs/btrfs/scrub.c b/fs/btrfs/scrub.c index fffb9ab8526e..ff3078234d94 100644 --- a/fs/btrfs/scrub.c +++ b/fs/btrfs/scrub.c @@ -4440,7 +4440,7 @@ static int write_page_nocow(struct scrub_ctx *sctx, bio->bi_iter.bi_size = 0; bio->bi_iter.bi_sector = physical_for_dev_replace >> 9; bio->bi_bdev = dev->bdev; - bio_set_op_attrs(bio, REQ_OP_WRITE, WRITE_SYNC); + bio->bi_opf = REQ_OP_WRITE | REQ_SYNC; ret = bio_add_page(bio, page, PAGE_SIZE, 0); if (ret != PAGE_SIZE) { leave_with_eio: diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c index 74ed5aae6cea..180f910339f4 100644 --- a/fs/btrfs/super.c +++ b/fs/btrfs/super.c @@ -202,27 +202,31 @@ static struct ratelimit_state printk_limits[] = { void btrfs_printk(const struct btrfs_fs_info *fs_info, const char *fmt, ...) { struct super_block *sb = fs_info->sb; - char lvl[4]; + char lvl[PRINTK_MAX_SINGLE_HEADER_LEN + 1]; struct va_format vaf; va_list args; - const char *type = logtypes[4]; + const char *type = NULL; int kern_level; struct ratelimit_state *ratelimit; va_start(args, fmt); - kern_level = printk_get_level(fmt); - if (kern_level) { + while ((kern_level = printk_get_level(fmt)) != 0) { size_t size = printk_skip_level(fmt) - fmt; - memcpy(lvl, fmt, size); - lvl[size] = '\0'; + + if (kern_level >= '0' && kern_level <= '7') { + memcpy(lvl, fmt, size); + lvl[size] = '\0'; + type = logtypes[kern_level - '0']; + ratelimit = &printk_limits[kern_level - '0']; + } fmt += size; - type = logtypes[kern_level - '0']; - ratelimit = &printk_limits[kern_level - '0']; - } else { + } + + if (!type) { *lvl = '\0'; - /* Default to debug output */ - ratelimit = &printk_limits[7]; + type = logtypes[4]; + ratelimit = &printk_limits[4]; } vaf.fmt = fmt; diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c index 71a60cc01451..0d7d635d8bfb 100644 --- a/fs/btrfs/volumes.c +++ b/fs/btrfs/volumes.c @@ -6023,7 +6023,7 @@ static void btrfs_end_bio(struct bio *bio) else btrfs_dev_stat_inc(dev, BTRFS_DEV_STAT_READ_ERRS); - if ((bio->bi_opf & WRITE_FLUSH) == WRITE_FLUSH) + if (bio->bi_opf & REQ_PREFLUSH) btrfs_dev_stat_inc(dev, BTRFS_DEV_STAT_FLUSH_ERRS); btrfs_dev_stat_print_on_error(dev); @@ -6100,7 +6100,7 @@ static noinline void btrfs_schedule_bio(struct btrfs_root *root, bio->bi_next = NULL; spin_lock(&device->io_lock); - if (bio->bi_opf & REQ_SYNC) + if (op_is_sync(bio->bi_opf)) pending_bios = &device->pending_sync_bios; else pending_bios = &device->pending_bios; diff --git a/fs/btrfs/volumes.h b/fs/btrfs/volumes.h index 09ed29c67848..f137ffe6654c 100644 --- a/fs/btrfs/volumes.h +++ b/fs/btrfs/volumes.h @@ -62,7 +62,7 @@ struct btrfs_device { int running_pending; /* regular prio bios */ struct btrfs_pending_bios pending_bios; - /* WRITE_SYNC bios */ + /* sync bios */ struct btrfs_pending_bios pending_sync_bios; struct block_device *bdev; diff --git a/fs/buffer.c b/fs/buffer.c index b205a629001d..a3bfd57c2697 100644 --- a/fs/buffer.c +++ b/fs/buffer.c @@ -753,7 +753,7 @@ static int fsync_buffers_list(spinlock_t *lock, struct list_head *list) * still in flight on potentially older * contents. */ - write_dirty_buffer(bh, WRITE_SYNC); + write_dirty_buffer(bh, REQ_SYNC); /* * Kick off IO for the previous mapping. Note @@ -1684,7 +1684,7 @@ static struct buffer_head *create_page_buffers(struct page *page, struct inode * * prevents this contention from occurring. * * If block_write_full_page() is called with wbc->sync_mode == - * WB_SYNC_ALL, the writes are posted using WRITE_SYNC; this + * WB_SYNC_ALL, the writes are posted using REQ_SYNC; this * causes the writes to be flagged as synchronous writes. */ int __block_write_full_page(struct inode *inode, struct page *page, @@ -1697,7 +1697,7 @@ int __block_write_full_page(struct inode *inode, struct page *page, struct buffer_head *bh, *head; unsigned int blocksize, bbits; int nr_underway = 0; - int write_flags = (wbc->sync_mode == WB_SYNC_ALL ? WRITE_SYNC : 0); + int write_flags = wbc_to_write_flags(wbc); head = create_page_buffers(page, inode, (1 << BH_Dirty)|(1 << BH_Uptodate)); @@ -3118,7 +3118,7 @@ EXPORT_SYMBOL(submit_bh); /** * ll_rw_block: low-level access to block devices (DEPRECATED) * @op: whether to %READ or %WRITE - * @op_flags: rq_flag_bits + * @op_flags: req_flag_bits * @nr: number of &struct buffer_heads in the array * @bhs: array of pointers to &struct buffer_head * @@ -3210,7 +3210,7 @@ EXPORT_SYMBOL(__sync_dirty_buffer); int sync_dirty_buffer(struct buffer_head *bh) { - return __sync_dirty_buffer(bh, WRITE_SYNC); + return __sync_dirty_buffer(bh, REQ_SYNC); } EXPORT_SYMBOL(sync_dirty_buffer); @@ -3403,7 +3403,7 @@ void free_buffer_head(struct buffer_head *bh) } EXPORT_SYMBOL(free_buffer_head); -static void buffer_exit_cpu(int cpu) +static int buffer_exit_cpu_dead(unsigned int cpu) { int i; struct bh_lru *b = &per_cpu(bh_lrus, cpu); @@ -3414,14 +3414,7 @@ static void buffer_exit_cpu(int cpu) } this_cpu_add(bh_accounting.nr, per_cpu(bh_accounting, cpu).nr); per_cpu(bh_accounting, cpu).nr = 0; -} - -static int buffer_cpu_notify(struct notifier_block *self, - unsigned long action, void *hcpu) -{ - if (action == CPU_DEAD || action == CPU_DEAD_FROZEN) - buffer_exit_cpu((unsigned long)hcpu); - return NOTIFY_OK; + return 0; } /** @@ -3471,6 +3464,7 @@ EXPORT_SYMBOL(bh_submit_read); void __init buffer_init(void) { unsigned long nrpages; + int ret; bh_cachep = kmem_cache_create("buffer_head", sizeof(struct buffer_head), 0, @@ -3483,5 +3477,7 @@ void __init buffer_init(void) */ nrpages = (nr_free_buffer_pages() * 10) / 100; max_buffer_heads = nrpages * (PAGE_SIZE / sizeof(struct buffer_head)); - hotcpu_notifier(buffer_cpu_notify, 0); + ret = cpuhp_setup_state_nocalls(CPUHP_FS_BUFF_DEAD, "fs/buffer:dead", + NULL, buffer_exit_cpu_dead); + WARN_ON(ret < 0); } diff --git a/fs/ceph/dir.c b/fs/ceph/dir.c index 78180d151730..a594c7879cc2 100644 --- a/fs/ceph/dir.c +++ b/fs/ceph/dir.c @@ -1261,26 +1261,30 @@ static int ceph_d_revalidate(struct dentry *dentry, unsigned int flags) return -ECHILD; op = ceph_snap(dir) == CEPH_SNAPDIR ? - CEPH_MDS_OP_LOOKUPSNAP : CEPH_MDS_OP_LOOKUP; + CEPH_MDS_OP_LOOKUPSNAP : CEPH_MDS_OP_GETATTR; req = ceph_mdsc_create_request(mdsc, op, USE_ANY_MDS); if (!IS_ERR(req)) { req->r_dentry = dget(dentry); - req->r_num_caps = 2; + req->r_num_caps = op == CEPH_MDS_OP_GETATTR ? 1 : 2; mask = CEPH_STAT_CAP_INODE | CEPH_CAP_AUTH_SHARED; if (ceph_security_xattr_wanted(dir)) mask |= CEPH_CAP_XATTR_SHARED; req->r_args.getattr.mask = mask; - req->r_locked_dir = dir; err = ceph_mdsc_do_request(mdsc, NULL, req); - if (err == 0 || err == -ENOENT) { - if (dentry == req->r_dentry) { - valid = !d_unhashed(dentry); - } else { - d_invalidate(req->r_dentry); - err = -EAGAIN; - } + switch (err) { + case 0: + if (d_really_is_positive(dentry) && + d_inode(dentry) == req->r_target_inode) + valid = 1; + break; + case -ENOENT: + if (d_really_is_negative(dentry)) + valid = 1; + /* Fallthrough */ + default: + break; } ceph_mdsc_put_request(req); dout("d_revalidate %p lookup result=%d\n", diff --git a/fs/cifs/cifsencrypt.c b/fs/cifs/cifsencrypt.c index 8347c90cf483..5eb04129f938 100644 --- a/fs/cifs/cifsencrypt.c +++ b/fs/cifs/cifsencrypt.c @@ -808,7 +808,11 @@ calc_seckey(struct cifs_ses *ses) struct crypto_skcipher *tfm_arc4; struct scatterlist sgin, sgout; struct skcipher_request *req; - unsigned char sec_key[CIFS_SESS_KEY_SIZE]; /* a nonce */ + unsigned char *sec_key; + + sec_key = kmalloc(CIFS_SESS_KEY_SIZE, GFP_KERNEL); + if (sec_key == NULL) + return -ENOMEM; get_random_bytes(sec_key, CIFS_SESS_KEY_SIZE); @@ -816,7 +820,7 @@ calc_seckey(struct cifs_ses *ses) if (IS_ERR(tfm_arc4)) { rc = PTR_ERR(tfm_arc4); cifs_dbg(VFS, "could not allocate crypto API arc4\n"); - return rc; + goto out; } rc = crypto_skcipher_setkey(tfm_arc4, ses->auth_key.response, @@ -854,7 +858,8 @@ calc_seckey(struct cifs_ses *ses) out_free_cipher: crypto_free_skcipher(tfm_arc4); - +out: + kfree(sec_key); return rc; } diff --git a/fs/cifs/cifssmb.c b/fs/cifs/cifssmb.c index 3f3185febc58..e3fed9249a04 100644 --- a/fs/cifs/cifssmb.c +++ b/fs/cifs/cifssmb.c @@ -3427,6 +3427,7 @@ static __u16 ACL_to_cifs_posix(char *parm_data, const char *pACL, __u16 rc = 0; struct cifs_posix_acl *cifs_acl = (struct cifs_posix_acl *)parm_data; struct posix_acl_xattr_header *local_acl = (void *)pACL; + struct posix_acl_xattr_entry *ace = (void *)(local_acl + 1); int count; int i; @@ -3453,8 +3454,7 @@ static __u16 ACL_to_cifs_posix(char *parm_data, const char *pACL, return 0; } for (i = 0; i < count; i++) { - rc = convert_ace_to_cifs_ace(&cifs_acl->ace_array[i], - (struct posix_acl_xattr_entry *)(local_acl + 1)); + rc = convert_ace_to_cifs_ace(&cifs_acl->ace_array[i], &ace[i]); if (rc != 0) { /* ACE not converted */ break; diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c index aab5227979e2..f7563c88c917 100644 --- a/fs/cifs/connect.c +++ b/fs/cifs/connect.c @@ -41,6 +41,7 @@ #include <keys/user-type.h> #include <net/ipv6.h> #include <linux/parser.h> +#include <linux/bvec.h> #include "cifspdu.h" #include "cifsglob.h" @@ -412,6 +413,9 @@ cifs_reconnect(struct TCP_Server_Info *server) } } while (server->tcpStatus == CifsNeedReconnect); + if (server->tcpStatus == CifsNeedNegotiate) + mod_delayed_work(cifsiod_wq, &server->echo, 0); + return rc; } @@ -421,17 +425,25 @@ cifs_echo_request(struct work_struct *work) int rc; struct TCP_Server_Info *server = container_of(work, struct TCP_Server_Info, echo.work); - unsigned long echo_interval = server->echo_interval; + unsigned long echo_interval; + + /* + * If we need to renegotiate, set echo interval to zero to + * immediately call echo service where we can renegotiate. + */ + if (server->tcpStatus == CifsNeedNegotiate) + echo_interval = 0; + else + echo_interval = server->echo_interval; /* - * We cannot send an echo if it is disabled or until the - * NEGOTIATE_PROTOCOL request is done, which is indicated by - * server->ops->need_neg() == true. Also, no need to ping if - * we got a response recently. + * We cannot send an echo if it is disabled. + * Also, no need to ping if we got a response recently. */ if (server->tcpStatus == CifsNeedReconnect || - server->tcpStatus == CifsExiting || server->tcpStatus == CifsNew || + server->tcpStatus == CifsExiting || + server->tcpStatus == CifsNew || (server->ops->can_echo && !server->ops->can_echo(server)) || time_before(jiffies, server->lstrp + echo_interval - HZ)) goto requeue_echo; @@ -442,7 +454,7 @@ cifs_echo_request(struct work_struct *work) server->hostname); requeue_echo: - queue_delayed_work(cifsiod_wq, &server->echo, echo_interval); + queue_delayed_work(cifsiod_wq, &server->echo, server->echo_interval); } static bool diff --git a/fs/cifs/transport.c b/fs/cifs/transport.c index 206a597b2293..5f02edc819af 100644 --- a/fs/cifs/transport.c +++ b/fs/cifs/transport.c @@ -28,6 +28,7 @@ #include <linux/delay.h> #include <linux/freezer.h> #include <linux/tcp.h> +#include <linux/bvec.h> #include <linux/highmem.h> #include <asm/uaccess.h> #include <asm/processor.h> @@ -342,7 +342,7 @@ static inline void *lock_slot(struct address_space *mapping, void **slot) radix_tree_deref_slot_protected(slot, &mapping->tree_lock); entry |= RADIX_DAX_ENTRY_LOCK; - radix_tree_replace_slot(slot, (void *)entry); + radix_tree_replace_slot(&mapping->page_tree, slot, (void *)entry); return (void *)entry; } @@ -356,7 +356,7 @@ static inline void *unlock_slot(struct address_space *mapping, void **slot) radix_tree_deref_slot_protected(slot, &mapping->tree_lock); entry &= ~(unsigned long)RADIX_DAX_ENTRY_LOCK; - radix_tree_replace_slot(slot, (void *)entry); + radix_tree_replace_slot(&mapping->page_tree, slot, (void *)entry); return (void *)entry; } @@ -643,12 +643,14 @@ static void *dax_insert_mapping_entry(struct address_space *mapping, } mapping->nrexceptional++; } else { + struct radix_tree_node *node; void **slot; void *ret; - ret = __radix_tree_lookup(page_tree, index, NULL, &slot); + ret = __radix_tree_lookup(page_tree, index, &node, &slot); WARN_ON_ONCE(ret != entry); - radix_tree_replace_slot(slot, new_entry); + __radix_tree_replace(page_tree, node, slot, + new_entry, NULL, NULL); } if (vmf->flags & FAULT_FLAG_WRITE) radix_tree_tag_set(page_tree, index, PAGECACHE_TAG_DIRTY); diff --git a/fs/direct-io.c b/fs/direct-io.c index fb9aa16a7727..835e23a4ee4b 100644 --- a/fs/direct-io.c +++ b/fs/direct-io.c @@ -457,7 +457,7 @@ static struct bio *dio_await_one(struct dio *dio) dio->waiter = current; spin_unlock_irqrestore(&dio->bio_lock, flags); if (!(dio->iocb->ki_flags & IOCB_HIPRI) || - !blk_poll(bdev_get_queue(dio->bio_bdev), dio->bio_cookie)) + !blk_mq_poll(bdev_get_queue(dio->bio_bdev), dio->bio_cookie)) io_schedule(); /* wake up sets us TASK_RUNNING */ spin_lock_irqsave(&dio->bio_lock, flags); @@ -1209,7 +1209,7 @@ do_blockdev_direct_IO(struct kiocb *iocb, struct inode *inode, dio->inode = inode; if (iov_iter_rw(iter) == WRITE) { dio->op = REQ_OP_WRITE; - dio->op_flags = WRITE_ODIRECT; + dio->op_flags = REQ_SYNC | REQ_IDLE; } else { dio->op = REQ_OP_READ; } diff --git a/fs/dlm/netlink.c b/fs/dlm/netlink.c index 1e6e227134d7..0643ae44f342 100644 --- a/fs/dlm/netlink.c +++ b/fs/dlm/netlink.c @@ -16,11 +16,7 @@ static uint32_t dlm_nl_seqnum; static uint32_t listener_nlportid; -static struct genl_family family = { - .id = GENL_ID_GENERATE, - .name = DLM_GENL_NAME, - .version = DLM_GENL_VERSION, -}; +static struct genl_family family; static int prepare_data(u8 cmd, struct sk_buff **skbp, size_t size) { @@ -76,9 +72,17 @@ static struct genl_ops dlm_nl_ops[] = { }, }; +static struct genl_family family __ro_after_init = { + .name = DLM_GENL_NAME, + .version = DLM_GENL_VERSION, + .ops = dlm_nl_ops, + .n_ops = ARRAY_SIZE(dlm_nl_ops), + .module = THIS_MODULE, +}; + int __init dlm_netlink_init(void) { - return genl_register_family_with_ops(&family, dlm_nl_ops); + return genl_register_family(&family); } void dlm_netlink_exit(void) diff --git a/fs/exec.c b/fs/exec.c index 4e497b9ee71e..923c57d96899 100644 --- a/fs/exec.c +++ b/fs/exec.c @@ -1169,8 +1169,10 @@ no_thread_group: /* we have changed execution domain */ tsk->exit_signal = SIGCHLD; +#ifdef CONFIG_POSIX_TIMERS exit_itimers(sig); flush_itimer_signals(); +#endif if (atomic_read(&oldsighand->count) != 1) { struct sighand_struct *newsighand; diff --git a/fs/ext4/mmp.c b/fs/ext4/mmp.c index d89754ef1aab..eb9835638680 100644 --- a/fs/ext4/mmp.c +++ b/fs/ext4/mmp.c @@ -35,7 +35,7 @@ static void ext4_mmp_csum_set(struct super_block *sb, struct mmp_struct *mmp) } /* - * Write the MMP block using WRITE_SYNC to try to get the block on-disk + * Write the MMP block using REQ_SYNC to try to get the block on-disk * faster. */ static int write_mmp_block(struct super_block *sb, struct buffer_head *bh) @@ -52,7 +52,7 @@ static int write_mmp_block(struct super_block *sb, struct buffer_head *bh) lock_buffer(bh); bh->b_end_io = end_buffer_write_sync; get_bh(bh); - submit_bh(REQ_OP_WRITE, WRITE_SYNC | REQ_META | REQ_PRIO, bh); + submit_bh(REQ_OP_WRITE, REQ_SYNC | REQ_META | REQ_PRIO, bh); wait_on_buffer(bh); sb_end_write(sb); if (unlikely(!buffer_uptodate(bh))) @@ -88,7 +88,7 @@ static int read_mmp_block(struct super_block *sb, struct buffer_head **bh, get_bh(*bh); lock_buffer(*bh); (*bh)->b_end_io = end_buffer_read_sync; - submit_bh(REQ_OP_READ, READ_SYNC | REQ_META | REQ_PRIO, *bh); + submit_bh(REQ_OP_READ, REQ_META | REQ_PRIO, *bh); wait_on_buffer(*bh); if (!buffer_uptodate(*bh)) { ret = -EIO; diff --git a/fs/ext4/page-io.c b/fs/ext4/page-io.c index 0094923e5ebf..e0b3b54cdef3 100644 --- a/fs/ext4/page-io.c +++ b/fs/ext4/page-io.c @@ -340,7 +340,7 @@ void ext4_io_submit(struct ext4_io_submit *io) if (bio) { int io_op_flags = io->io_wbc->sync_mode == WB_SYNC_ALL ? - WRITE_SYNC : 0; + REQ_SYNC : 0; bio_set_op_attrs(io->io_bio, REQ_OP_WRITE, io_op_flags); submit_bio(io->io_bio); } diff --git a/fs/ext4/super.c b/fs/ext4/super.c index 52b0530c5d65..caa4147cda47 100644 --- a/fs/ext4/super.c +++ b/fs/ext4/super.c @@ -4569,7 +4569,7 @@ static int ext4_commit_super(struct super_block *sb, int sync) unlock_buffer(sbh); if (sync) { error = __sync_dirty_buffer(sbh, - test_opt(sb, BARRIER) ? WRITE_FUA : WRITE_SYNC); + test_opt(sb, BARRIER) ? REQ_FUA : REQ_SYNC); if (error) return error; diff --git a/fs/f2fs/checkpoint.c b/fs/f2fs/checkpoint.c index 7e9b504bd8b2..d935c06a84f0 100644 --- a/fs/f2fs/checkpoint.c +++ b/fs/f2fs/checkpoint.c @@ -65,7 +65,7 @@ static struct page *__get_meta_page(struct f2fs_sb_info *sbi, pgoff_t index, .sbi = sbi, .type = META, .op = REQ_OP_READ, - .op_flags = READ_SYNC | REQ_META | REQ_PRIO, + .op_flags = REQ_META | REQ_PRIO, .old_blkaddr = index, .new_blkaddr = index, .encrypted_page = NULL, @@ -160,7 +160,7 @@ int ra_meta_pages(struct f2fs_sb_info *sbi, block_t start, int nrpages, .sbi = sbi, .type = META, .op = REQ_OP_READ, - .op_flags = sync ? (READ_SYNC | REQ_META | REQ_PRIO) : REQ_RAHEAD, + .op_flags = sync ? (REQ_META | REQ_PRIO) : REQ_RAHEAD, .encrypted_page = NULL, }; struct blk_plug plug; diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c index 9ae194fd2fdb..9e5561fa4cb6 100644 --- a/fs/f2fs/data.c +++ b/fs/f2fs/data.c @@ -198,11 +198,9 @@ static void __f2fs_submit_merged_bio(struct f2fs_sb_info *sbi, if (type >= META_FLUSH) { io->fio.type = META_FLUSH; io->fio.op = REQ_OP_WRITE; - if (test_opt(sbi, NOBARRIER)) - io->fio.op_flags = WRITE_FLUSH | REQ_META | REQ_PRIO; - else - io->fio.op_flags = WRITE_FLUSH_FUA | REQ_META | - REQ_PRIO; + io->fio.op_flags = REQ_PREFLUSH | REQ_META | REQ_PRIO; + if (!test_opt(sbi, NOBARRIER)) + io->fio.op_flags |= REQ_FUA; } __submit_merged_bio(io); out: @@ -483,7 +481,7 @@ struct page *find_data_page(struct inode *inode, pgoff_t index) return page; f2fs_put_page(page, 0); - page = get_read_data_page(inode, index, READ_SYNC, false); + page = get_read_data_page(inode, index, 0, false); if (IS_ERR(page)) return page; @@ -509,7 +507,7 @@ struct page *get_lock_data_page(struct inode *inode, pgoff_t index, struct address_space *mapping = inode->i_mapping; struct page *page; repeat: - page = get_read_data_page(inode, index, READ_SYNC, for_write); + page = get_read_data_page(inode, index, 0, for_write); if (IS_ERR(page)) return page; @@ -1251,7 +1249,7 @@ static int f2fs_write_data_page(struct page *page, .sbi = sbi, .type = DATA, .op = REQ_OP_WRITE, - .op_flags = (wbc->sync_mode == WB_SYNC_ALL) ? WRITE_SYNC : 0, + .op_flags = wbc_to_write_flags(wbc), .page = page, .encrypted_page = NULL, }; @@ -1663,7 +1661,7 @@ repeat: err = PTR_ERR(bio); goto fail; } - bio_set_op_attrs(bio, REQ_OP_READ, READ_SYNC); + bio->bi_opf = REQ_OP_READ; if (bio_add_page(bio, page, PAGE_SIZE, 0) < PAGE_SIZE) { bio_put(bio); err = -EFAULT; diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h index 9e8de18a168a..2cf4f7f09e32 100644 --- a/fs/f2fs/f2fs.h +++ b/fs/f2fs/f2fs.h @@ -688,7 +688,7 @@ struct f2fs_io_info { struct f2fs_sb_info *sbi; /* f2fs_sb_info pointer */ enum page_type type; /* contains DATA/NODE/META/META_FLUSH */ int op; /* contains REQ_OP_ */ - int op_flags; /* rq_flag_bits */ + int op_flags; /* req_flag_bits */ block_t new_blkaddr; /* new block address to be written */ block_t old_blkaddr; /* old block address before Cow */ struct page *page; /* page to be written */ diff --git a/fs/f2fs/gc.c b/fs/f2fs/gc.c index 6f14ee923acd..fcca12b97a2a 100644 --- a/fs/f2fs/gc.c +++ b/fs/f2fs/gc.c @@ -550,7 +550,7 @@ static void move_encrypted_block(struct inode *inode, block_t bidx) .sbi = F2FS_I_SB(inode), .type = DATA, .op = REQ_OP_READ, - .op_flags = READ_SYNC, + .op_flags = 0, .encrypted_page = NULL, }; struct dnode_of_data dn; @@ -625,7 +625,7 @@ static void move_encrypted_block(struct inode *inode, block_t bidx) f2fs_wait_on_page_writeback(dn.node_page, NODE, true); fio.op = REQ_OP_WRITE; - fio.op_flags = WRITE_SYNC; + fio.op_flags = REQ_SYNC; fio.new_blkaddr = newaddr; f2fs_submit_page_mbio(&fio); @@ -663,7 +663,7 @@ static void move_data_page(struct inode *inode, block_t bidx, int gc_type) .sbi = F2FS_I_SB(inode), .type = DATA, .op = REQ_OP_WRITE, - .op_flags = WRITE_SYNC, + .op_flags = REQ_SYNC, .page = page, .encrypted_page = NULL, }; diff --git a/fs/f2fs/inline.c b/fs/f2fs/inline.c index 5f1a67f756af..2e7f54c191b4 100644 --- a/fs/f2fs/inline.c +++ b/fs/f2fs/inline.c @@ -111,7 +111,7 @@ int f2fs_convert_inline_page(struct dnode_of_data *dn, struct page *page) .sbi = F2FS_I_SB(dn->inode), .type = DATA, .op = REQ_OP_WRITE, - .op_flags = WRITE_SYNC | REQ_PRIO, + .op_flags = REQ_SYNC | REQ_PRIO, .page = page, .encrypted_page = NULL, }; diff --git a/fs/f2fs/node.c b/fs/f2fs/node.c index 01177ecdeab8..d1e29deb4598 100644 --- a/fs/f2fs/node.c +++ b/fs/f2fs/node.c @@ -1134,7 +1134,7 @@ repeat: if (!page) return ERR_PTR(-ENOMEM); - err = read_node_page(page, READ_SYNC); + err = read_node_page(page, 0); if (err < 0) { f2fs_put_page(page, 1); return ERR_PTR(err); @@ -1570,7 +1570,7 @@ static int f2fs_write_node_page(struct page *page, .sbi = sbi, .type = NODE, .op = REQ_OP_WRITE, - .op_flags = (wbc->sync_mode == WB_SYNC_ALL) ? WRITE_SYNC : 0, + .op_flags = wbc_to_write_flags(wbc), .page = page, .encrypted_page = NULL, }; diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c index fc886f008449..f1b4a1775ebe 100644 --- a/fs/f2fs/segment.c +++ b/fs/f2fs/segment.c @@ -259,7 +259,7 @@ static int __commit_inmem_pages(struct inode *inode, .sbi = sbi, .type = DATA, .op = REQ_OP_WRITE, - .op_flags = WRITE_SYNC | REQ_PRIO, + .op_flags = REQ_SYNC | REQ_PRIO, .encrypted_page = NULL, }; bool submit_bio = false; @@ -420,7 +420,7 @@ repeat: fcc->dispatch_list = llist_reverse_order(fcc->dispatch_list); bio->bi_bdev = sbi->sb->s_bdev; - bio_set_op_attrs(bio, REQ_OP_WRITE, WRITE_FLUSH); + bio->bi_opf = REQ_OP_WRITE | REQ_PREFLUSH; ret = submit_bio_wait(bio); llist_for_each_entry_safe(cmd, next, @@ -454,7 +454,7 @@ int f2fs_issue_flush(struct f2fs_sb_info *sbi) atomic_inc(&fcc->submit_flush); bio->bi_bdev = sbi->sb->s_bdev; - bio_set_op_attrs(bio, REQ_OP_WRITE, WRITE_FLUSH); + bio->bi_opf = REQ_OP_WRITE | REQ_PREFLUSH; ret = submit_bio_wait(bio); atomic_dec(&fcc->submit_flush); bio_put(bio); @@ -1515,7 +1515,7 @@ void write_meta_page(struct f2fs_sb_info *sbi, struct page *page) .sbi = sbi, .type = META, .op = REQ_OP_WRITE, - .op_flags = WRITE_SYNC | REQ_META | REQ_PRIO, + .op_flags = REQ_SYNC | REQ_META | REQ_PRIO, .old_blkaddr = page->index, .new_blkaddr = page->index, .page = page, diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c index 6132b4ce4e4c..2cac6bb86080 100644 --- a/fs/f2fs/super.c +++ b/fs/f2fs/super.c @@ -1238,7 +1238,7 @@ static int __f2fs_commit_super(struct buffer_head *bh, unlock_buffer(bh); /* it's rare case, we can do fua all the time */ - return __sync_dirty_buffer(bh, WRITE_FLUSH_FUA); + return __sync_dirty_buffer(bh, REQ_PREFLUSH | REQ_FUA); } static inline bool sanity_check_area_boundary(struct f2fs_sb_info *sbi, diff --git a/fs/fs-writeback.c b/fs/fs-writeback.c index 05713a5da083..ef600591d96f 100644 --- a/fs/fs-writeback.c +++ b/fs/fs-writeback.c @@ -1769,15 +1769,13 @@ static long wb_writeback(struct bdi_writeback *wb, * become available for writeback. Otherwise * we'll just busyloop. */ - if (!list_empty(&wb->b_more_io)) { - trace_writeback_wait(wb, work); - inode = wb_inode(wb->b_more_io.prev); - spin_lock(&inode->i_lock); - spin_unlock(&wb->list_lock); - /* This function drops i_lock... */ - inode_sleep_on_writeback(inode); - spin_lock(&wb->list_lock); - } + trace_writeback_wait(wb, work); + inode = wb_inode(wb->b_more_io.prev); + spin_lock(&inode->i_lock); + spin_unlock(&wb->list_lock); + /* This function drops i_lock... */ + inode_sleep_on_writeback(inode); + spin_lock(&wb->list_lock); } spin_unlock(&wb->list_lock); blk_finish_plug(&plug); diff --git a/fs/fuse/dir.c b/fs/fuse/dir.c index b3ebe512d64c..096f79997f75 100644 --- a/fs/fuse/dir.c +++ b/fs/fuse/dir.c @@ -1739,8 +1739,6 @@ static int fuse_setattr(struct dentry *entry, struct iattr *attr) * This should be done on write(), truncate() and chown(). */ if (!fc->handle_killpriv) { - int kill; - /* * ia_mode calculation may have used stale i_mode. * Refresh and recalculate. @@ -1750,12 +1748,11 @@ static int fuse_setattr(struct dentry *entry, struct iattr *attr) return ret; attr->ia_mode = inode->i_mode; - kill = should_remove_suid(entry); - if (kill & ATTR_KILL_SUID) { + if (inode->i_mode & S_ISUID) { attr->ia_valid |= ATTR_MODE; attr->ia_mode &= ~S_ISUID; } - if (kill & ATTR_KILL_SGID) { + if ((inode->i_mode & (S_ISGID | S_IXGRP)) == (S_ISGID | S_IXGRP)) { attr->ia_valid |= ATTR_MODE; attr->ia_mode &= ~S_ISGID; } diff --git a/fs/gfs2/dir.c b/fs/gfs2/dir.c index 3cdde5f5d399..79113219be5f 100644 --- a/fs/gfs2/dir.c +++ b/fs/gfs2/dir.c @@ -62,6 +62,7 @@ #include <linux/gfs2_ondisk.h> #include <linux/crc32.h> #include <linux/vmalloc.h> +#include <linux/bio.h> #include "gfs2.h" #include "incore.h" diff --git a/fs/gfs2/log.c b/fs/gfs2/log.c index e58ccef09c91..27c00a16def0 100644 --- a/fs/gfs2/log.c +++ b/fs/gfs2/log.c @@ -657,7 +657,7 @@ static void log_write_header(struct gfs2_sbd *sdp, u32 flags) struct gfs2_log_header *lh; unsigned int tail; u32 hash; - int op_flags = WRITE_FLUSH_FUA | REQ_META; + int op_flags = REQ_PREFLUSH | REQ_FUA | REQ_META; struct page *page = mempool_alloc(gfs2_page_pool, GFP_NOIO); enum gfs2_freeze_state state = atomic_read(&sdp->sd_freeze_state); lh = page_address(page); @@ -682,7 +682,7 @@ static void log_write_header(struct gfs2_sbd *sdp, u32 flags) if (test_bit(SDF_NOBARRIERS, &sdp->sd_flags)) { gfs2_ordered_wait(sdp); log_flush_wait(sdp); - op_flags = WRITE_SYNC | REQ_META | REQ_PRIO; + op_flags = REQ_SYNC | REQ_META | REQ_PRIO; } sdp->sd_log_idle = (tail == sdp->sd_log_flush_head); diff --git a/fs/gfs2/lops.c b/fs/gfs2/lops.c index 49d5a1b61b06..b1f9144b42c7 100644 --- a/fs/gfs2/lops.c +++ b/fs/gfs2/lops.c @@ -231,7 +231,7 @@ static void gfs2_end_log_write(struct bio *bio) * gfs2_log_flush_bio - Submit any pending log bio * @sdp: The superblock * @op: REQ_OP - * @op_flags: rq_flag_bits + * @op_flags: req_flag_bits * * Submit any pending part-built or full bio to the block device. If * there is no pending bio, then this is a no-op. diff --git a/fs/gfs2/meta_io.c b/fs/gfs2/meta_io.c index 373639a59782..49db8ef13fdf 100644 --- a/fs/gfs2/meta_io.c +++ b/fs/gfs2/meta_io.c @@ -37,8 +37,7 @@ static int gfs2_aspace_writepage(struct page *page, struct writeback_control *wb { struct buffer_head *bh, *head; int nr_underway = 0; - int write_flags = REQ_META | REQ_PRIO | - (wbc->sync_mode == WB_SYNC_ALL ? WRITE_SYNC : 0); + int write_flags = REQ_META | REQ_PRIO | wbc_to_write_flags(wbc); BUG_ON(!PageLocked(page)); BUG_ON(!page_has_buffers(page)); @@ -285,7 +284,7 @@ int gfs2_meta_read(struct gfs2_glock *gl, u64 blkno, int flags, } } - gfs2_submit_bhs(REQ_OP_READ, READ_SYNC | REQ_META | REQ_PRIO, bhs, num); + gfs2_submit_bhs(REQ_OP_READ, REQ_META | REQ_PRIO, bhs, num); if (!(flags & DIO_WAIT)) return 0; @@ -453,7 +452,7 @@ struct buffer_head *gfs2_meta_ra(struct gfs2_glock *gl, u64 dblock, u32 extlen) if (buffer_uptodate(first_bh)) goto out; if (!buffer_locked(first_bh)) - ll_rw_block(REQ_OP_READ, READ_SYNC | REQ_META, 1, &first_bh); + ll_rw_block(REQ_OP_READ, REQ_META, 1, &first_bh); dblock++; extlen--; diff --git a/fs/gfs2/ops_fstype.c b/fs/gfs2/ops_fstype.c index ff72ac6439c8..a34308df927f 100644 --- a/fs/gfs2/ops_fstype.c +++ b/fs/gfs2/ops_fstype.c @@ -246,7 +246,7 @@ static int gfs2_read_super(struct gfs2_sbd *sdp, sector_t sector, int silent) bio->bi_end_io = end_bio_io_page; bio->bi_private = page; - bio_set_op_attrs(bio, REQ_OP_READ, READ_SYNC | REQ_META); + bio_set_op_attrs(bio, REQ_OP_READ, REQ_META); submit_bio(bio); wait_on_page_locked(page); bio_put(bio); diff --git a/fs/hfsplus/super.c b/fs/hfsplus/super.c index 11854dd84572..67aedf4c2e7c 100644 --- a/fs/hfsplus/super.c +++ b/fs/hfsplus/super.c @@ -221,7 +221,7 @@ static int hfsplus_sync_fs(struct super_block *sb, int wait) error2 = hfsplus_submit_bio(sb, sbi->part_start + HFSPLUS_VOLHEAD_SECTOR, sbi->s_vhdr_buf, NULL, REQ_OP_WRITE, - WRITE_SYNC); + REQ_SYNC); if (!error) error = error2; if (!write_backup) @@ -230,7 +230,7 @@ static int hfsplus_sync_fs(struct super_block *sb, int wait) error2 = hfsplus_submit_bio(sb, sbi->part_start + sbi->sect_count - 2, sbi->s_backup_vhdr_buf, NULL, REQ_OP_WRITE, - WRITE_SYNC); + REQ_SYNC); if (!error) error2 = error; out: diff --git a/fs/isofs/compress.c b/fs/isofs/compress.c index 44af14b2e916..9bb2fe35799d 100644 --- a/fs/isofs/compress.c +++ b/fs/isofs/compress.c @@ -18,6 +18,7 @@ #include <linux/module.h> #include <linux/init.h> +#include <linux/bio.h> #include <linux/vmalloc.h> #include <linux/zlib.h> diff --git a/fs/isofs/rock.c b/fs/isofs/rock.c index 98b3eb7d8eaf..0ec137310320 100644 --- a/fs/isofs/rock.c +++ b/fs/isofs/rock.c @@ -377,9 +377,9 @@ repeat: { int p; for (p = 0; p < rr->u.ER.len_id; p++) - printk("%c", rr->u.ER.data[p]); + printk(KERN_CONT "%c", rr->u.ER.data[p]); } - printk("\n"); + printk(KERN_CONT "\n"); break; case SIG('P', 'X'): inode->i_mode = isonum_733(rr->u.PX.mode); diff --git a/fs/jbd2/checkpoint.c b/fs/jbd2/checkpoint.c index 684996c8a3a4..4055f51617ef 100644 --- a/fs/jbd2/checkpoint.c +++ b/fs/jbd2/checkpoint.c @@ -186,7 +186,7 @@ __flush_batch(journal_t *journal, int *batch_count) blk_start_plug(&plug); for (i = 0; i < *batch_count; i++) - write_dirty_buffer(journal->j_chkpt_bhs[i], WRITE_SYNC); + write_dirty_buffer(journal->j_chkpt_bhs[i], REQ_SYNC); blk_finish_plug(&plug); for (i = 0; i < *batch_count; i++) { diff --git a/fs/jbd2/commit.c b/fs/jbd2/commit.c index 31f8ca046639..8c514367ba5a 100644 --- a/fs/jbd2/commit.c +++ b/fs/jbd2/commit.c @@ -155,9 +155,10 @@ static int journal_submit_commit_record(journal_t *journal, if (journal->j_flags & JBD2_BARRIER && !jbd2_has_feature_async_commit(journal)) - ret = submit_bh(REQ_OP_WRITE, WRITE_SYNC | WRITE_FLUSH_FUA, bh); + ret = submit_bh(REQ_OP_WRITE, + REQ_SYNC | REQ_PREFLUSH | REQ_FUA, bh); else - ret = submit_bh(REQ_OP_WRITE, WRITE_SYNC, bh); + ret = submit_bh(REQ_OP_WRITE, REQ_SYNC, bh); *cbh = bh; return ret; @@ -402,7 +403,7 @@ void jbd2_journal_commit_transaction(journal_t *journal) jbd2_journal_update_sb_log_tail(journal, journal->j_tail_sequence, journal->j_tail, - WRITE_SYNC); + REQ_SYNC); mutex_unlock(&journal->j_checkpoint_mutex); } else { jbd_debug(3, "superblock not updated\n"); @@ -717,7 +718,7 @@ start_journal_io: clear_buffer_dirty(bh); set_buffer_uptodate(bh); bh->b_end_io = journal_end_buffer_io_sync; - submit_bh(REQ_OP_WRITE, WRITE_SYNC, bh); + submit_bh(REQ_OP_WRITE, REQ_SYNC, bh); } cond_resched(); stats.run.rs_blocks_logged += bufs; diff --git a/fs/jbd2/journal.c b/fs/jbd2/journal.c index 927da4956a89..8ed971eeab44 100644 --- a/fs/jbd2/journal.c +++ b/fs/jbd2/journal.c @@ -913,7 +913,7 @@ int __jbd2_update_log_tail(journal_t *journal, tid_t tid, unsigned long block) * space and if we lose sb update during power failure we'd replay * old transaction with possibly newly overwritten data. */ - ret = jbd2_journal_update_sb_log_tail(journal, tid, block, WRITE_FUA); + ret = jbd2_journal_update_sb_log_tail(journal, tid, block, REQ_FUA); if (ret) goto out; @@ -1306,7 +1306,7 @@ static int journal_reset(journal_t *journal) /* Lock here to make assertions happy... */ mutex_lock(&journal->j_checkpoint_mutex); /* - * Update log tail information. We use WRITE_FUA since new + * Update log tail information. We use REQ_FUA since new * transaction will start reusing journal space and so we * must make sure information about current log tail is on * disk before that. @@ -1314,7 +1314,7 @@ static int journal_reset(journal_t *journal) jbd2_journal_update_sb_log_tail(journal, journal->j_tail_sequence, journal->j_tail, - WRITE_FUA); + REQ_FUA); mutex_unlock(&journal->j_checkpoint_mutex); } return jbd2_journal_start_thread(journal); @@ -1454,7 +1454,7 @@ void jbd2_journal_update_sb_errno(journal_t *journal) sb->s_errno = cpu_to_be32(journal->j_errno); read_unlock(&journal->j_state_lock); - jbd2_write_superblock(journal, WRITE_FUA); + jbd2_write_superblock(journal, REQ_FUA); } EXPORT_SYMBOL(jbd2_journal_update_sb_errno); @@ -1720,7 +1720,8 @@ int jbd2_journal_destroy(journal_t *journal) ++journal->j_transaction_sequence; write_unlock(&journal->j_state_lock); - jbd2_mark_journal_empty(journal, WRITE_FLUSH_FUA); + jbd2_mark_journal_empty(journal, + REQ_PREFLUSH | REQ_FUA); mutex_unlock(&journal->j_checkpoint_mutex); } else err = -EIO; @@ -1979,7 +1980,7 @@ int jbd2_journal_flush(journal_t *journal) * the magic code for a fully-recovered superblock. Any future * commits of data to the journal will restore the current * s_start value. */ - jbd2_mark_journal_empty(journal, WRITE_FUA); + jbd2_mark_journal_empty(journal, REQ_FUA); mutex_unlock(&journal->j_checkpoint_mutex); write_lock(&journal->j_state_lock); J_ASSERT(!journal->j_running_transaction); @@ -2025,7 +2026,7 @@ int jbd2_journal_wipe(journal_t *journal, int write) if (write) { /* Lock to make assertions happy... */ mutex_lock(&journal->j_checkpoint_mutex); - jbd2_mark_journal_empty(journal, WRITE_FUA); + jbd2_mark_journal_empty(journal, REQ_FUA); mutex_unlock(&journal->j_checkpoint_mutex); } diff --git a/fs/jbd2/revoke.c b/fs/jbd2/revoke.c index 91171dc352cb..cfc38b552118 100644 --- a/fs/jbd2/revoke.c +++ b/fs/jbd2/revoke.c @@ -648,7 +648,7 @@ static void flush_descriptor(journal_t *journal, set_buffer_jwrite(descriptor); BUFFER_TRACE(descriptor, "write"); set_buffer_dirty(descriptor); - write_dirty_buffer(descriptor, WRITE_SYNC); + write_dirty_buffer(descriptor, REQ_SYNC); } #endif diff --git a/fs/jfs/jfs_logmgr.c b/fs/jfs/jfs_logmgr.c index a21ea8b3e5fa..bb1da1feafeb 100644 --- a/fs/jfs/jfs_logmgr.c +++ b/fs/jfs/jfs_logmgr.c @@ -2002,7 +2002,7 @@ static int lbmRead(struct jfs_log * log, int pn, struct lbuf ** bpp) bio->bi_end_io = lbmIODone; bio->bi_private = bp; - bio_set_op_attrs(bio, REQ_OP_READ, READ_SYNC); + bio->bi_opf = REQ_OP_READ; /*check if journaling to disk has been disabled*/ if (log->no_integrity) { bio->bi_iter.bi_size = 0; @@ -2146,7 +2146,7 @@ static void lbmStartIO(struct lbuf * bp) bio->bi_end_io = lbmIODone; bio->bi_private = bp; - bio_set_op_attrs(bio, REQ_OP_WRITE, WRITE_SYNC); + bio->bi_opf = REQ_OP_WRITE | REQ_SYNC; /* check if journaling to disk has been disabled */ if (log->no_integrity) { diff --git a/fs/lockd/netns.h b/fs/lockd/netns.h index 5426189406c1..fb8cac88251a 100644 --- a/fs/lockd/netns.h +++ b/fs/lockd/netns.h @@ -15,6 +15,6 @@ struct lockd_net { struct list_head nsm_handles; }; -extern int lockd_net_id; +extern unsigned int lockd_net_id; #endif diff --git a/fs/lockd/svc.c b/fs/lockd/svc.c index fc4084ef4736..1c13dd80744f 100644 --- a/fs/lockd/svc.c +++ b/fs/lockd/svc.c @@ -57,7 +57,7 @@ static struct task_struct *nlmsvc_task; static struct svc_rqst *nlmsvc_rqst; unsigned long nlmsvc_timeout; -int lockd_net_id; +unsigned int lockd_net_id; /* * These can be set at insmod time (useful for NFS as root filesystem), diff --git a/fs/logfs/dev_bdev.c b/fs/logfs/dev_bdev.c index a8329cc47dec..9bfa0151d7c9 100644 --- a/fs/logfs/dev_bdev.c +++ b/fs/logfs/dev_bdev.c @@ -19,16 +19,10 @@ static int sync_request(struct page *page, struct block_device *bdev, int op) struct bio bio; struct bio_vec bio_vec; - bio_init(&bio); - bio.bi_max_vecs = 1; - bio.bi_io_vec = &bio_vec; - bio_vec.bv_page = page; - bio_vec.bv_len = PAGE_SIZE; - bio_vec.bv_offset = 0; - bio.bi_vcnt = 1; + bio_init(&bio, &bio_vec, 1); bio.bi_bdev = bdev; + bio_add_page(&bio, page, PAGE_SIZE, 0); bio.bi_iter.bi_sector = page->index * (PAGE_SIZE >> 9); - bio.bi_iter.bi_size = PAGE_SIZE; bio_set_op_attrs(&bio, op, 0); return submit_bio_wait(&bio); @@ -77,56 +71,45 @@ static int __bdev_writeseg(struct super_block *sb, u64 ofs, pgoff_t index, { struct logfs_super *super = logfs_super(sb); struct address_space *mapping = super->s_mapping_inode->i_mapping; - struct bio *bio; + struct bio *bio = NULL; struct page *page; unsigned int max_pages; - int i; + int i, ret; max_pages = min_t(size_t, nr_pages, BIO_MAX_PAGES); - bio = bio_alloc(GFP_NOFS, max_pages); - BUG_ON(!bio); - for (i = 0; i < nr_pages; i++) { - if (i >= max_pages) { - /* Block layer cannot split bios :( */ - bio->bi_vcnt = i; - bio->bi_iter.bi_size = i * PAGE_SIZE; + if (!bio) { + bio = bio_alloc(GFP_NOFS, max_pages); + BUG_ON(!bio); + bio->bi_bdev = super->s_bdev; bio->bi_iter.bi_sector = ofs >> 9; bio->bi_private = sb; bio->bi_end_io = writeseg_end_io; bio_set_op_attrs(bio, REQ_OP_WRITE, 0); - atomic_inc(&super->s_pending_writes); - submit_bio(bio); - - ofs += i * PAGE_SIZE; - index += i; - nr_pages -= i; - i = 0; - - bio = bio_alloc(GFP_NOFS, max_pages); - BUG_ON(!bio); } page = find_lock_page(mapping, index + i); BUG_ON(!page); - bio->bi_io_vec[i].bv_page = page; - bio->bi_io_vec[i].bv_len = PAGE_SIZE; - bio->bi_io_vec[i].bv_offset = 0; + ret = bio_add_page(bio, page, PAGE_SIZE, 0); BUG_ON(PageWriteback(page)); set_page_writeback(page); unlock_page(page); + + if (!ret) { + /* Block layer cannot split bios :( */ + ofs += bio->bi_iter.bi_size; + atomic_inc(&super->s_pending_writes); + submit_bio(bio); + bio = NULL; + } + } + + if (bio) { + atomic_inc(&super->s_pending_writes); + submit_bio(bio); } - bio->bi_vcnt = nr_pages; - bio->bi_iter.bi_size = nr_pages * PAGE_SIZE; - bio->bi_bdev = super->s_bdev; - bio->bi_iter.bi_sector = ofs >> 9; - bio->bi_private = sb; - bio->bi_end_io = writeseg_end_io; - bio_set_op_attrs(bio, REQ_OP_WRITE, 0); - atomic_inc(&super->s_pending_writes); - submit_bio(bio); return 0; } @@ -160,7 +143,6 @@ static void erase_end_io(struct bio *bio) struct logfs_super *super = logfs_super(sb); BUG_ON(bio->bi_error); /* FIXME: Retry io or write elsewhere */ - BUG_ON(bio->bi_vcnt == 0); bio_put(bio); if (atomic_dec_and_test(&super->s_pending_writes)) wake_up(&wq); @@ -170,49 +152,35 @@ static int do_erase(struct super_block *sb, u64 ofs, pgoff_t index, size_t nr_pages) { struct logfs_super *super = logfs_super(sb); - struct bio *bio; + struct bio *bio = NULL; unsigned int max_pages; - int i; + int i, ret; max_pages = min_t(size_t, nr_pages, BIO_MAX_PAGES); - bio = bio_alloc(GFP_NOFS, max_pages); - BUG_ON(!bio); - for (i = 0; i < nr_pages; i++) { - if (i >= max_pages) { - /* Block layer cannot split bios :( */ - bio->bi_vcnt = i; - bio->bi_iter.bi_size = i * PAGE_SIZE; + if (!bio) { + bio = bio_alloc(GFP_NOFS, max_pages); + BUG_ON(!bio); + bio->bi_bdev = super->s_bdev; bio->bi_iter.bi_sector = ofs >> 9; bio->bi_private = sb; bio->bi_end_io = erase_end_io; bio_set_op_attrs(bio, REQ_OP_WRITE, 0); + } + ret = bio_add_page(bio, super->s_erase_page, PAGE_SIZE, 0); + if (!ret) { + /* Block layer cannot split bios :( */ + ofs += bio->bi_iter.bi_size; atomic_inc(&super->s_pending_writes); submit_bio(bio); - - ofs += i * PAGE_SIZE; - index += i; - nr_pages -= i; - i = 0; - - bio = bio_alloc(GFP_NOFS, max_pages); - BUG_ON(!bio); } - bio->bi_io_vec[i].bv_page = super->s_erase_page; - bio->bi_io_vec[i].bv_len = PAGE_SIZE; - bio->bi_io_vec[i].bv_offset = 0; } - bio->bi_vcnt = nr_pages; - bio->bi_iter.bi_size = nr_pages * PAGE_SIZE; - bio->bi_bdev = super->s_bdev; - bio->bi_iter.bi_sector = ofs >> 9; - bio->bi_private = sb; - bio->bi_end_io = erase_end_io; - bio_set_op_attrs(bio, REQ_OP_WRITE, 0); - atomic_inc(&super->s_pending_writes); - submit_bio(bio); + if (bio) { + atomic_inc(&super->s_pending_writes); + submit_bio(bio); + } return 0; } diff --git a/fs/mpage.c b/fs/mpage.c index d2413af0823a..98fc11aa7e0b 100644 --- a/fs/mpage.c +++ b/fs/mpage.c @@ -489,7 +489,7 @@ static int __mpage_writepage(struct page *page, struct writeback_control *wbc, struct buffer_head map_bh; loff_t i_size = i_size_read(inode); int ret = 0; - int op_flags = (wbc->sync_mode == WB_SYNC_ALL ? WRITE_SYNC : 0); + int op_flags = wbc_to_write_flags(wbc); if (page_has_buffers(page)) { struct buffer_head *head = page_buffers(page); @@ -705,7 +705,7 @@ mpage_writepages(struct address_space *mapping, ret = write_cache_pages(mapping, wbc, __mpage_writepage, &mpd); if (mpd.bio) { int op_flags = (wbc->sync_mode == WB_SYNC_ALL ? - WRITE_SYNC : 0); + REQ_SYNC : 0); mpage_bio_submit(REQ_OP_WRITE, op_flags, mpd.bio); } } @@ -726,7 +726,7 @@ int mpage_writepage(struct page *page, get_block_t get_block, int ret = __mpage_writepage(page, wbc, &mpd); if (mpd.bio) { int op_flags = (wbc->sync_mode == WB_SYNC_ALL ? - WRITE_SYNC : 0); + REQ_SYNC : 0); mpage_bio_submit(REQ_OP_WRITE, op_flags, mpd.bio); } return ret; diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c index bf4ec5ecc97e..ce42dd00e4ee 100644 --- a/fs/nfs/inode.c +++ b/fs/nfs/inode.c @@ -2015,7 +2015,7 @@ static void nfsiod_stop(void) destroy_workqueue(wq); } -int nfs_net_id; +unsigned int nfs_net_id; EXPORT_SYMBOL_GPL(nfs_net_id); static int nfs_net_init(struct net *net) diff --git a/fs/nfs/netns.h b/fs/nfs/netns.h index fbce0d885d4c..5fbd2bde91ba 100644 --- a/fs/nfs/netns.h +++ b/fs/nfs/netns.h @@ -35,6 +35,6 @@ struct nfs_net { #endif }; -extern int nfs_net_id; +extern unsigned int nfs_net_id; #endif diff --git a/fs/nfs_common/grace.c b/fs/nfs_common/grace.c index fd8c9a5bcac4..420d3a0ab258 100644 --- a/fs/nfs_common/grace.c +++ b/fs/nfs_common/grace.c @@ -9,7 +9,7 @@ #include <net/netns/generic.h> #include <linux/fs.h> -static int grace_net_id; +static unsigned int grace_net_id; static DEFINE_SPINLOCK(grace_lock); /** diff --git a/fs/nfsd/netns.h b/fs/nfsd/netns.h index ee36efd5aece..3714231a9d0f 100644 --- a/fs/nfsd/netns.h +++ b/fs/nfsd/netns.h @@ -124,5 +124,5 @@ struct nfsd_net { /* Simple check to find out if a given net was properly initialized */ #define nfsd_netns_ready(nn) ((nn)->sessionid_hashtbl) -extern int nfsd_net_id; +extern unsigned int nfsd_net_id; #endif /* __NFSD_NETNS_H__ */ diff --git a/fs/nfsd/nfsctl.c b/fs/nfsd/nfsctl.c index 36b2af931e06..2857e46d5cc5 100644 --- a/fs/nfsd/nfsctl.c +++ b/fs/nfsd/nfsctl.c @@ -1201,7 +1201,7 @@ static int create_proc_exports_entry(void) } #endif -int nfsd_net_id; +unsigned int nfsd_net_id; static __net_init int nfsd_init_net(struct net *net) { diff --git a/fs/nilfs2/super.c b/fs/nilfs2/super.c index c95d369e90aa..12eeae62a2b1 100644 --- a/fs/nilfs2/super.c +++ b/fs/nilfs2/super.c @@ -189,7 +189,7 @@ static int nilfs_sync_super(struct super_block *sb, int flag) set_buffer_dirty(nilfs->ns_sbh[0]); if (nilfs_test_opt(nilfs, BARRIER)) { err = __sync_dirty_buffer(nilfs->ns_sbh[0], - WRITE_SYNC | WRITE_FLUSH_FUA); + REQ_SYNC | REQ_PREFLUSH | REQ_FUA); } else { err = sync_dirty_buffer(nilfs->ns_sbh[0]); } diff --git a/fs/nsfs.c b/fs/nsfs.c index 8718af895eab..8c9fb29c6673 100644 --- a/fs/nsfs.c +++ b/fs/nsfs.c @@ -118,7 +118,7 @@ again: return ret; } -static int open_related_ns(struct ns_common *ns, +int open_related_ns(struct ns_common *ns, struct ns_common *(*get_ns)(struct ns_common *ns)) { struct path path = {}; diff --git a/fs/ntfs/aops.c b/fs/ntfs/aops.c index fe251f187ff8..d0cf6fee5c77 100644 --- a/fs/ntfs/aops.c +++ b/fs/ntfs/aops.c @@ -29,6 +29,7 @@ #include <linux/buffer_head.h> #include <linux/writeback.h> #include <linux/bit_spinlock.h> +#include <linux/bio.h> #include "aops.h" #include "attrib.h" diff --git a/fs/ntfs/logfile.c b/fs/ntfs/logfile.c index 761f12f7f3ef..353379ff6057 100644 --- a/fs/ntfs/logfile.c +++ b/fs/ntfs/logfile.c @@ -27,6 +27,7 @@ #include <linux/buffer_head.h> #include <linux/bitops.h> #include <linux/log2.h> +#include <linux/bio.h> #include "attrib.h" #include "aops.h" diff --git a/fs/ntfs/mft.c b/fs/ntfs/mft.c index d3c009626032..b6f402194f02 100644 --- a/fs/ntfs/mft.c +++ b/fs/ntfs/mft.c @@ -23,6 +23,7 @@ #include <linux/buffer_head.h> #include <linux/slab.h> #include <linux/swap.h> +#include <linux/bio.h> #include "attrib.h" #include "aops.h" diff --git a/fs/ocfs2/aops.c b/fs/ocfs2/aops.c index c5c5b9748ea3..9a88984f9f6f 100644 --- a/fs/ocfs2/aops.c +++ b/fs/ocfs2/aops.c @@ -1950,8 +1950,7 @@ static void ocfs2_write_end_inline(struct inode *inode, loff_t pos, } int ocfs2_write_end_nolock(struct address_space *mapping, - loff_t pos, unsigned len, unsigned copied, - struct page *page, void *fsdata) + loff_t pos, unsigned len, unsigned copied, void *fsdata) { int i, ret; unsigned from, to, start = pos & (PAGE_SIZE - 1); @@ -2064,7 +2063,7 @@ static int ocfs2_write_end(struct file *file, struct address_space *mapping, int ret; struct inode *inode = mapping->host; - ret = ocfs2_write_end_nolock(mapping, pos, len, copied, page, fsdata); + ret = ocfs2_write_end_nolock(mapping, pos, len, copied, fsdata); up_write(&OCFS2_I(inode)->ip_alloc_sem); ocfs2_inode_unlock(inode, 1); @@ -2241,7 +2240,7 @@ static int ocfs2_dio_get_block(struct inode *inode, sector_t iblock, dwc->dw_zero_count++; } - ret = ocfs2_write_end_nolock(inode->i_mapping, pos, len, len, NULL, wc); + ret = ocfs2_write_end_nolock(inode->i_mapping, pos, len, len, wc); BUG_ON(ret != len); ret = 0; unlock: diff --git a/fs/ocfs2/aops.h b/fs/ocfs2/aops.h index b1c9f28a57b1..8614ff069d99 100644 --- a/fs/ocfs2/aops.h +++ b/fs/ocfs2/aops.h @@ -44,8 +44,7 @@ int walk_page_buffers( handle_t *handle, struct buffer_head *bh)); int ocfs2_write_end_nolock(struct address_space *mapping, - loff_t pos, unsigned len, unsigned copied, - struct page *page, void *fsdata); + loff_t pos, unsigned len, unsigned copied, void *fsdata); typedef enum { OCFS2_WRITE_BUFFER = 0, diff --git a/fs/ocfs2/buffer_head_io.c b/fs/ocfs2/buffer_head_io.c index 8f040f88ade4..d9ebe11c8990 100644 --- a/fs/ocfs2/buffer_head_io.c +++ b/fs/ocfs2/buffer_head_io.c @@ -26,6 +26,7 @@ #include <linux/fs.h> #include <linux/types.h> #include <linux/highmem.h> +#include <linux/bio.h> #include <cluster/masklog.h> diff --git a/fs/ocfs2/cluster/heartbeat.c b/fs/ocfs2/cluster/heartbeat.c index 636abcbd4650..96a155ab5059 100644 --- a/fs/ocfs2/cluster/heartbeat.c +++ b/fs/ocfs2/cluster/heartbeat.c @@ -627,7 +627,7 @@ static int o2hb_issue_node_write(struct o2hb_region *reg, slot = o2nm_this_node(); bio = o2hb_setup_one_bio(reg, write_wc, &slot, slot+1, REQ_OP_WRITE, - WRITE_SYNC); + REQ_SYNC); if (IS_ERR(bio)) { status = PTR_ERR(bio); mlog_errno(status); @@ -741,7 +741,7 @@ static inline void o2hb_prepare_block(struct o2hb_region *reg, hb_block = (struct o2hb_disk_heartbeat_block *)slot->ds_raw_block; memset(hb_block, 0, reg->hr_block_bytes); /* TODO: time stuff */ - cputime = CURRENT_TIME.tv_sec; + cputime = ktime_get_real_seconds(); if (!cputime) cputime = 1; diff --git a/fs/ocfs2/dlm/dlmmaster.c b/fs/ocfs2/dlm/dlmmaster.c index 3f828a187049..a464c8088170 100644 --- a/fs/ocfs2/dlm/dlmmaster.c +++ b/fs/ocfs2/dlm/dlmmaster.c @@ -1609,8 +1609,6 @@ way_up_top: __dlm_insert_mle(dlm, mle); response = DLM_MASTER_RESP_NO; } else { - // mlog(0, "mle was found\n"); - set_maybe = 1; spin_lock(&tmpmle->spinlock); if (tmpmle->master == dlm->node_num) { mlog(ML_ERROR, "no lockres, but an mle with this node as master!\n"); @@ -1625,8 +1623,7 @@ way_up_top: response = DLM_MASTER_RESP_NO; } else response = DLM_MASTER_RESP_MAYBE; - if (set_maybe) - set_bit(request->node_idx, tmpmle->maybe_map); + set_bit(request->node_idx, tmpmle->maybe_map); spin_unlock(&tmpmle->spinlock); } spin_unlock(&dlm->master_lock); @@ -1644,12 +1641,6 @@ send_response: * dlm_assert_master_worker() isn't called, we drop it here. */ if (dispatch_assert) { - if (response != DLM_MASTER_RESP_YES) - mlog(ML_ERROR, "invalid response %d\n", response); - if (!res) { - mlog(ML_ERROR, "bad lockres while trying to assert!\n"); - BUG(); - } mlog(0, "%u is the owner of %.*s, cleaning everyone else\n", dlm->node_num, res->lockname.len, res->lockname.name); spin_lock(&res->spinlock); diff --git a/fs/ocfs2/dlm/dlmrecovery.c b/fs/ocfs2/dlm/dlmrecovery.c index dd5cb8bcefd1..74407c6dd592 100644 --- a/fs/ocfs2/dlm/dlmrecovery.c +++ b/fs/ocfs2/dlm/dlmrecovery.c @@ -2966,8 +2966,6 @@ int dlm_finalize_reco_handler(struct o2net_msg *msg, u32 len, void *data, spin_unlock(&dlm->spinlock); dlm_kick_recovery_thread(dlm); break; - default: - BUG(); } mlog(0, "%s: recovery done, reco master was %u, dead now %u, master now %u\n", diff --git a/fs/ocfs2/inode.c b/fs/ocfs2/inode.c index c56a7679df93..382401d3e88f 100644 --- a/fs/ocfs2/inode.c +++ b/fs/ocfs2/inode.c @@ -703,7 +703,7 @@ static int ocfs2_remove_inode(struct inode *inode, goto bail_commit; } - di->i_dtime = cpu_to_le64(CURRENT_TIME.tv_sec); + di->i_dtime = cpu_to_le64(ktime_get_real_seconds()); di->i_flags &= cpu_to_le32(~(OCFS2_VALID_FL | OCFS2_ORPHANED_FL)); ocfs2_journal_dirty(handle, di_bh); diff --git a/fs/ocfs2/journal.c b/fs/ocfs2/journal.c index a244f14c6b87..d5e5fa7f0743 100644 --- a/fs/ocfs2/journal.c +++ b/fs/ocfs2/journal.c @@ -1947,7 +1947,7 @@ static void ocfs2_queue_orphan_scan(struct ocfs2_super *osb) */ seqno++; os->os_count++; - os->os_scantime = CURRENT_TIME; + os->os_scantime = ktime_get_seconds(); unlock: ocfs2_orphan_scan_unlock(osb, seqno); out: @@ -2004,7 +2004,7 @@ void ocfs2_orphan_scan_start(struct ocfs2_super *osb) struct ocfs2_orphan_scan *os; os = &osb->osb_orphan_scan; - os->os_scantime = CURRENT_TIME; + os->os_scantime = ktime_get_seconds(); if (ocfs2_is_hard_readonly(osb) || ocfs2_mount_local(osb)) atomic_set(&os->os_state, ORPHAN_SCAN_INACTIVE); else { diff --git a/fs/ocfs2/mmap.c b/fs/ocfs2/mmap.c index 71545ad4628c..429088786e93 100644 --- a/fs/ocfs2/mmap.c +++ b/fs/ocfs2/mmap.c @@ -120,8 +120,7 @@ static int __ocfs2_page_mkwrite(struct file *file, struct buffer_head *di_bh, ret = VM_FAULT_NOPAGE; goto out; } - ret = ocfs2_write_end_nolock(mapping, pos, len, len, locked_page, - fsdata); + ret = ocfs2_write_end_nolock(mapping, pos, len, len, fsdata); BUG_ON(ret != len); ret = VM_FAULT_LOCKED; out: diff --git a/fs/ocfs2/namei.c b/fs/ocfs2/namei.c index 8d887c75765c..3b0a10d9b36f 100644 --- a/fs/ocfs2/namei.c +++ b/fs/ocfs2/namei.c @@ -516,6 +516,7 @@ static int __ocfs2_mknod_locked(struct inode *dir, struct ocfs2_extent_list *fel; u16 feat; struct ocfs2_inode_info *oi = OCFS2_I(inode); + struct timespec64 ts; *new_fe_bh = NULL; @@ -564,10 +565,11 @@ static int __ocfs2_mknod_locked(struct inode *dir, fe->i_last_eb_blk = 0; strcpy(fe->i_signature, OCFS2_INODE_SIGNATURE); fe->i_flags |= cpu_to_le32(OCFS2_VALID_FL); + ktime_get_real_ts64(&ts); fe->i_atime = fe->i_ctime = fe->i_mtime = - cpu_to_le64(CURRENT_TIME.tv_sec); + cpu_to_le64(ts.tv_sec); fe->i_mtime_nsec = fe->i_ctime_nsec = fe->i_atime_nsec = - cpu_to_le32(CURRENT_TIME.tv_nsec); + cpu_to_le32(ts.tv_nsec); fe->i_dtime = 0; /* diff --git a/fs/ocfs2/ocfs2.h b/fs/ocfs2/ocfs2.h index e63af7ddfe68..7e5958b0be6b 100644 --- a/fs/ocfs2/ocfs2.h +++ b/fs/ocfs2/ocfs2.h @@ -224,7 +224,7 @@ struct ocfs2_orphan_scan { struct ocfs2_super *os_osb; struct ocfs2_lock_res os_lockres; /* lock to synchronize scans */ struct delayed_work os_orphan_scan_work; - struct timespec os_scantime; /* time this node ran the scan */ + time64_t os_scantime; /* time this node ran the scan */ u32 os_count; /* tracks node specific scans */ u32 os_seqno; /* tracks cluster wide scans */ atomic_t os_state; /* ACTIVE or INACTIVE */ diff --git a/fs/ocfs2/refcounttree.c b/fs/ocfs2/refcounttree.c index 19238512a324..738b4ea8e990 100644 --- a/fs/ocfs2/refcounttree.c +++ b/fs/ocfs2/refcounttree.c @@ -478,7 +478,6 @@ again: if (ret) { mlog_errno(ret); ocfs2_unlock_refcount_tree(osb, tree, rw); - ocfs2_refcount_tree_put(tree); goto out; } diff --git a/fs/ocfs2/super.c b/fs/ocfs2/super.c index f56fe39fab04..c894d945b084 100644 --- a/fs/ocfs2/super.c +++ b/fs/ocfs2/super.c @@ -337,7 +337,7 @@ static int ocfs2_osb_dump(struct ocfs2_super *osb, char *buf, int len) out += snprintf(buf + out, len - out, "Disabled\n"); else out += snprintf(buf + out, len - out, "%lu seconds ago\n", - (get_seconds() - os->os_scantime.tv_sec)); + (unsigned long)(ktime_get_seconds() - os->os_scantime)); out += snprintf(buf + out, len - out, "%10s => %3s %10s\n", "Slots", "Num", "RecoGen"); diff --git a/fs/orangefs/inode.c b/fs/orangefs/inode.c index ef3b4eb54cf2..551bc74ed2b8 100644 --- a/fs/orangefs/inode.c +++ b/fs/orangefs/inode.c @@ -8,6 +8,7 @@ * Linux VFS inode operations. */ +#include <linux/bvec.h> #include "protocol.h" #include "orangefs-kernel.h" #include "orangefs-bufmap.h" diff --git a/fs/overlayfs/super.c b/fs/overlayfs/super.c index edd46a0e951d..0e100856c7b8 100644 --- a/fs/overlayfs/super.c +++ b/fs/overlayfs/super.c @@ -328,11 +328,11 @@ static struct dentry *ovl_d_real(struct dentry *dentry, if (!real) goto bug; + /* Handle recursion */ + real = d_real(real, inode, open_flags); + if (!inode || inode == d_inode(real)) return real; - - /* Handle recursion */ - return d_real(real, inode, open_flags); bug: WARN(1, "ovl_d_real(%pd4, %s:%lu): real dentry not found\n", dentry, inode ? inode->i_sb->s_id : "NULL", inode ? inode->i_ino : 0); diff --git a/fs/proc/array.c b/fs/proc/array.c index 81818adb8e9e..51a4213afa2e 100644 --- a/fs/proc/array.c +++ b/fs/proc/array.c @@ -245,7 +245,7 @@ void render_sigset_t(struct seq_file *m, const char *header, if (sigismember(set, i+2)) x |= 2; if (sigismember(set, i+3)) x |= 4; if (sigismember(set, i+4)) x |= 8; - seq_printf(m, "%x", x); + seq_putc(m, hex_asc[x]); } while (i >= 4); seq_putc(m, '\n'); @@ -342,10 +342,11 @@ static inline void task_cap(struct seq_file *m, struct task_struct *p) static inline void task_seccomp(struct seq_file *m, struct task_struct *p) { + seq_put_decimal_ull(m, "NoNewPrivs:\t", task_no_new_privs(p)); #ifdef CONFIG_SECCOMP - seq_put_decimal_ull(m, "Seccomp:\t", p->seccomp.mode); - seq_putc(m, '\n'); + seq_put_decimal_ull(m, "\nSeccomp:\t", p->seccomp.mode); #endif + seq_putc(m, '\n'); } static inline void task_context_switch_counts(struct seq_file *m, diff --git a/fs/proc/base.c b/fs/proc/base.c index ca651ac00660..9b99df4893a4 100644 --- a/fs/proc/base.c +++ b/fs/proc/base.c @@ -104,9 +104,12 @@ * in /proc for a task before it execs a suid executable. */ +static u8 nlink_tid; +static u8 nlink_tgid; + struct pid_entry { const char *name; - int len; + unsigned int len; umode_t mode; const struct inode_operations *iop; const struct file_operations *fop; @@ -139,13 +142,13 @@ struct pid_entry { * Count the number of hardlinks for the pid_entry table, excluding the . * and .. links. */ -static unsigned int pid_entry_count_dirs(const struct pid_entry *entries, +static unsigned int __init pid_entry_nlink(const struct pid_entry *entries, unsigned int n) { unsigned int i; unsigned int count; - count = 0; + count = 2; for (i = 0; i < n; ++i) { if (S_ISDIR(entries[i].mode)) ++count; @@ -1967,7 +1970,7 @@ out: struct map_files_info { fmode_t mode; - unsigned long len; + unsigned int len; unsigned char name[4*sizeof(long)+2]; /* max: %lx-%lx\0 */ }; @@ -2412,14 +2415,14 @@ static struct dentry *proc_pident_lookup(struct inode *dir, * Yes, it does not scale. And it should not. Don't add * new entries into /proc/<tgid>/ without very good reasons. */ - last = &ents[nents - 1]; - for (p = ents; p <= last; p++) { + last = &ents[nents]; + for (p = ents; p < last; p++) { if (p->len != dentry->d_name.len) continue; if (!memcmp(dentry->d_name.name, p->name, p->len)) break; } - if (p > last) + if (p >= last) goto out; error = proc_pident_instantiate(dir, dentry, task, p); @@ -2444,7 +2447,7 @@ static int proc_pident_readdir(struct file *file, struct dir_context *ctx, if (ctx->pos >= nents + 2) goto out; - for (p = ents + (ctx->pos - 2); p <= ents + nents - 1; p++) { + for (p = ents + (ctx->pos - 2); p < ents + nents; p++) { if (!proc_fill_cache(file, ctx, p->name, p->len, proc_pident_instantiate, task, p)) break; @@ -3068,8 +3071,7 @@ static int proc_pid_instantiate(struct inode *dir, inode->i_fop = &proc_tgid_base_operations; inode->i_flags|=S_IMMUTABLE; - set_nlink(inode, 2 + pid_entry_count_dirs(tgid_base_stuff, - ARRAY_SIZE(tgid_base_stuff))); + set_nlink(inode, nlink_tgid); d_set_d_op(dentry, &pid_dentry_operations); @@ -3361,8 +3363,7 @@ static int proc_task_instantiate(struct inode *dir, inode->i_fop = &proc_tid_base_operations; inode->i_flags|=S_IMMUTABLE; - set_nlink(inode, 2 + pid_entry_count_dirs(tid_base_stuff, - ARRAY_SIZE(tid_base_stuff))); + set_nlink(inode, nlink_tid); d_set_d_op(dentry, &pid_dentry_operations); @@ -3552,3 +3553,9 @@ static const struct file_operations proc_task_operations = { .iterate_shared = proc_task_readdir, .llseek = generic_file_llseek, }; + +void __init set_proc_pid_nlink(void) +{ + nlink_tid = pid_entry_nlink(tid_base_stuff, ARRAY_SIZE(tid_base_stuff)); + nlink_tgid = pid_entry_nlink(tgid_base_stuff, ARRAY_SIZE(tgid_base_stuff)); +} diff --git a/fs/proc/inode.c b/fs/proc/inode.c index e69ebe648a34..783bc19644d1 100644 --- a/fs/proc/inode.c +++ b/fs/proc/inode.c @@ -138,6 +138,16 @@ static void unuse_pde(struct proc_dir_entry *pde) /* pde is locked */ static void close_pdeo(struct proc_dir_entry *pde, struct pde_opener *pdeo) { + /* + * close() (proc_reg_release()) can't delete an entry and proceed: + * ->release hook needs to be available at the right moment. + * + * rmmod (remove_proc_entry() et al) can't delete an entry and proceed: + * "struct file" needs to be available at the right moment. + * + * Therefore, first process to enter this function does ->release() and + * signals its completion to the other process which does nothing. + */ if (pdeo->closing) { /* somebody else is doing that, just wait */ DECLARE_COMPLETION_ONSTACK(c); @@ -147,12 +157,13 @@ static void close_pdeo(struct proc_dir_entry *pde, struct pde_opener *pdeo) spin_lock(&pde->pde_unload_lock); } else { struct file *file; - pdeo->closing = 1; + pdeo->closing = true; spin_unlock(&pde->pde_unload_lock); file = pdeo->file; pde->proc_fops->release(file_inode(file), file); spin_lock(&pde->pde_unload_lock); - list_del_init(&pdeo->lh); + /* After ->release. */ + list_del(&pdeo->lh); if (pdeo->c) complete(pdeo->c); kfree(pdeo); @@ -167,6 +178,8 @@ void proc_entry_rundown(struct proc_dir_entry *de) if (atomic_add_return(BIAS, &de->in_use) != BIAS) wait_for_completion(&c); + /* ->pde_openers list can't grow from now on. */ + spin_lock(&de->pde_unload_lock); while (!list_empty(&de->pde_openers)) { struct pde_opener *pdeo; @@ -312,16 +325,17 @@ static int proc_reg_open(struct inode *inode, struct file *file) struct pde_opener *pdeo; /* - * What for, you ask? Well, we can have open, rmmod, remove_proc_entry - * sequence. ->release won't be called because ->proc_fops will be - * cleared. Depending on complexity of ->release, consequences vary. + * Ensure that + * 1) PDE's ->release hook will be called no matter what + * either normally by close()/->release, or forcefully by + * rmmod/remove_proc_entry. + * + * 2) rmmod isn't blocked by opening file in /proc and sitting on + * the descriptor (including "rmmod foo </proc/foo" scenario). * - * We can't wait for mercy when close will be done for real, it's - * deadlockable: rmmod foo </proc/foo . So, we're going to do ->release - * by hand in remove_proc_entry(). For this, save opener's credentials - * for later. + * Save every "struct file" with custom ->release hook. */ - pdeo = kzalloc(sizeof(struct pde_opener), GFP_KERNEL); + pdeo = kmalloc(sizeof(struct pde_opener), GFP_KERNEL); if (!pdeo) return -ENOMEM; @@ -338,7 +352,8 @@ static int proc_reg_open(struct inode *inode, struct file *file) if (rv == 0 && release) { /* To know what to release. */ pdeo->file = file; - /* Strictly for "too late" ->release in proc_reg_release(). */ + pdeo->closing = false; + pdeo->c = NULL; spin_lock(&pde->pde_unload_lock); list_add(&pdeo->lh, &pde->pde_openers); spin_unlock(&pde->pde_unload_lock); diff --git a/fs/proc/internal.h b/fs/proc/internal.h index 5378441ec1b7..bbba5d22aada 100644 --- a/fs/proc/internal.h +++ b/fs/proc/internal.h @@ -203,7 +203,7 @@ struct proc_dir_entry *proc_create_mount_point(const char *name); struct pde_opener { struct file *file; struct list_head lh; - int closing; + bool closing; struct completion *c; }; extern const struct inode_operations proc_link_inode_operations; @@ -211,6 +211,7 @@ extern const struct inode_operations proc_link_inode_operations; extern const struct inode_operations proc_pid_link_inode_operations; extern void proc_init_inodecache(void); +void set_proc_pid_nlink(void); extern struct inode *proc_get_inode(struct super_block *, struct proc_dir_entry *); extern int proc_fill_super(struct super_block *, void *data, int flags); extern void proc_entry_rundown(struct proc_dir_entry *); diff --git a/fs/proc/root.c b/fs/proc/root.c index 8d3e484055a6..4bd0373576b5 100644 --- a/fs/proc/root.c +++ b/fs/proc/root.c @@ -122,6 +122,7 @@ void __init proc_root_init(void) int err; proc_init_inodecache(); + set_proc_pid_nlink(); err = register_filesystem(&proc_fs_type); if (err) return; diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c index 35b92d81692f..958f32545064 100644 --- a/fs/proc/task_mmu.c +++ b/fs/proc/task_mmu.c @@ -1588,6 +1588,7 @@ static int gather_pte_stats(pmd_t *pmd, unsigned long addr, } while (pte++, addr += PAGE_SIZE, addr != end); pte_unmap_unlock(orig_pte, ptl); + cond_resched(); return 0; } #ifdef CONFIG_HUGETLB_PAGE diff --git a/fs/pstore/Kconfig b/fs/pstore/Kconfig index be40813eff52..b42e5bd6d8ff 100644 --- a/fs/pstore/Kconfig +++ b/fs/pstore/Kconfig @@ -86,4 +86,4 @@ config PSTORE_RAM Note that for historical reasons, the module will be named "ramoops.ko". - For more information, see Documentation/ramoops.txt. + For more information, see Documentation/admin-guide/ramoops.rst. diff --git a/fs/pstore/ftrace.c b/fs/pstore/ftrace.c index d4887705bb61..899d0ba0bd6c 100644 --- a/fs/pstore/ftrace.c +++ b/fs/pstore/ftrace.c @@ -27,6 +27,9 @@ #include <asm/barrier.h> #include "internal.h" +/* This doesn't need to be atomic: speed is chosen over correctness here. */ +static u64 pstore_ftrace_stamp; + static void notrace pstore_ftrace_call(unsigned long ip, unsigned long parent_ip, struct ftrace_ops *op, @@ -42,6 +45,7 @@ static void notrace pstore_ftrace_call(unsigned long ip, rec.ip = ip; rec.parent_ip = parent_ip; + pstore_ftrace_write_timestamp(&rec, pstore_ftrace_stamp++); pstore_ftrace_encode_cpu(&rec, raw_smp_processor_id()); psinfo->write_buf(PSTORE_TYPE_FTRACE, 0, NULL, 0, (void *)&rec, 0, sizeof(rec), psinfo); @@ -71,10 +75,13 @@ static ssize_t pstore_ftrace_knob_write(struct file *f, const char __user *buf, if (!on ^ pstore_ftrace_enabled) goto out; - if (on) + if (on) { + ftrace_ops_set_global_filter(&pstore_ftrace_ops); ret = register_ftrace_function(&pstore_ftrace_ops); - else + } else { ret = unregister_ftrace_function(&pstore_ftrace_ops); + } + if (ret) { pr_err("%s: unable to %sregister ftrace ops: %zd\n", __func__, on ? "" : "un", ret); diff --git a/fs/pstore/inode.c b/fs/pstore/inode.c index 1781dc50762e..57c0646479f5 100644 --- a/fs/pstore/inode.c +++ b/fs/pstore/inode.c @@ -107,9 +107,11 @@ static int pstore_ftrace_seq_show(struct seq_file *s, void *v) struct pstore_ftrace_seq_data *data = v; struct pstore_ftrace_record *rec = (void *)(ps->data + data->off); - seq_printf(s, "%d %08lx %08lx %pf <- %pF\n", - pstore_ftrace_decode_cpu(rec), rec->ip, rec->parent_ip, - (void *)rec->ip, (void *)rec->parent_ip); + seq_printf(s, "CPU:%d ts:%llu %08lx %08lx %pf <- %pF\n", + pstore_ftrace_decode_cpu(rec), + pstore_ftrace_read_timestamp(rec), + rec->ip, rec->parent_ip, (void *)rec->ip, + (void *)rec->parent_ip); return 0; } @@ -197,11 +199,14 @@ static int pstore_unlink(struct inode *dir, struct dentry *dentry) if (err) return err; - if (p->psi->erase) + if (p->psi->erase) { + mutex_lock(&p->psi->read_mutex); p->psi->erase(p->type, p->id, p->count, d_inode(dentry)->i_ctime, p->psi); - else + mutex_unlock(&p->psi->read_mutex); + } else { return -EPERM; + } return simple_unlink(dir, dentry); } diff --git a/fs/pstore/internal.h b/fs/pstore/internal.h index e38a22b31282..da416e6591c9 100644 --- a/fs/pstore/internal.h +++ b/fs/pstore/internal.h @@ -5,40 +5,6 @@ #include <linux/time.h> #include <linux/pstore.h> -#if NR_CPUS <= 2 && defined(CONFIG_ARM_THUMB) -#define PSTORE_CPU_IN_IP 0x1 -#elif NR_CPUS <= 4 && defined(CONFIG_ARM) -#define PSTORE_CPU_IN_IP 0x3 -#endif - -struct pstore_ftrace_record { - unsigned long ip; - unsigned long parent_ip; -#ifndef PSTORE_CPU_IN_IP - unsigned int cpu; -#endif -}; - -static inline void -pstore_ftrace_encode_cpu(struct pstore_ftrace_record *rec, unsigned int cpu) -{ -#ifndef PSTORE_CPU_IN_IP - rec->cpu = cpu; -#else - rec->ip |= cpu; -#endif -} - -static inline unsigned int -pstore_ftrace_decode_cpu(struct pstore_ftrace_record *rec) -{ -#ifndef PSTORE_CPU_IN_IP - return rec->cpu; -#else - return rec->ip & PSTORE_CPU_IN_IP; -#endif -} - #ifdef CONFIG_PSTORE_FTRACE extern void pstore_register_ftrace(void); extern void pstore_unregister_ftrace(void); diff --git a/fs/pstore/platform.c b/fs/pstore/platform.c index 14984d902a99..729677e18e36 100644 --- a/fs/pstore/platform.c +++ b/fs/pstore/platform.c @@ -493,6 +493,7 @@ static void pstore_dump(struct kmsg_dumper *dumper, if (!is_locked) { pr_err("pstore dump routine blocked in %s path, may corrupt error record\n" , in_nmi() ? "NMI" : why); + return; } } else { spin_lock_irqsave(&psinfo->buf_lock, flags); @@ -584,8 +585,8 @@ static void pstore_console_write(struct console *con, const char *s, unsigned c) } else { spin_lock_irqsave(&psinfo->buf_lock, flags); } - memcpy(psinfo->buf, s, c); - psinfo->write(PSTORE_TYPE_CONSOLE, 0, &id, 0, 0, 0, c, psinfo); + psinfo->write_buf(PSTORE_TYPE_CONSOLE, 0, &id, 0, + s, 0, c, psinfo); spin_unlock_irqrestore(&psinfo->buf_lock, flags); s += c; c = e - s; diff --git a/fs/pstore/ram.c b/fs/pstore/ram.c index 6ad831b9d1b8..27c059e1760a 100644 --- a/fs/pstore/ram.c +++ b/fs/pstore/ram.c @@ -85,10 +85,10 @@ MODULE_PARM_DESC(ramoops_ecc, "bytes ECC)"); struct ramoops_context { - struct persistent_ram_zone **przs; - struct persistent_ram_zone *cprz; - struct persistent_ram_zone *fprz; - struct persistent_ram_zone *mprz; + struct persistent_ram_zone **dprzs; /* Oops dump zones */ + struct persistent_ram_zone *cprz; /* Console zone */ + struct persistent_ram_zone **fprzs; /* Ftrace zones */ + struct persistent_ram_zone *mprz; /* PMSG zone */ phys_addr_t phys_addr; unsigned long size; unsigned int memtype; @@ -97,12 +97,14 @@ struct ramoops_context { size_t ftrace_size; size_t pmsg_size; int dump_oops; + u32 flags; struct persistent_ram_ecc_info ecc_info; unsigned int max_dump_cnt; unsigned int dump_write_cnt; /* _read_cnt need clear on ramoops_pstore_open */ unsigned int dump_read_cnt; unsigned int console_read_cnt; + unsigned int max_ftrace_cnt; unsigned int ftrace_read_cnt; unsigned int pmsg_read_cnt; struct pstore_info pstore; @@ -180,16 +182,69 @@ static bool prz_ok(struct persistent_ram_zone *prz) persistent_ram_ecc_string(prz, NULL, 0)); } +static ssize_t ftrace_log_combine(struct persistent_ram_zone *dest, + struct persistent_ram_zone *src) +{ + size_t dest_size, src_size, total, dest_off, src_off; + size_t dest_idx = 0, src_idx = 0, merged_idx = 0; + void *merged_buf; + struct pstore_ftrace_record *drec, *srec, *mrec; + size_t record_size = sizeof(struct pstore_ftrace_record); + + dest_off = dest->old_log_size % record_size; + dest_size = dest->old_log_size - dest_off; + + src_off = src->old_log_size % record_size; + src_size = src->old_log_size - src_off; + + total = dest_size + src_size; + merged_buf = kmalloc(total, GFP_KERNEL); + if (!merged_buf) + return -ENOMEM; + + drec = (struct pstore_ftrace_record *)(dest->old_log + dest_off); + srec = (struct pstore_ftrace_record *)(src->old_log + src_off); + mrec = (struct pstore_ftrace_record *)(merged_buf); + + while (dest_size > 0 && src_size > 0) { + if (pstore_ftrace_read_timestamp(&drec[dest_idx]) < + pstore_ftrace_read_timestamp(&srec[src_idx])) { + mrec[merged_idx++] = drec[dest_idx++]; + dest_size -= record_size; + } else { + mrec[merged_idx++] = srec[src_idx++]; + src_size -= record_size; + } + } + + while (dest_size > 0) { + mrec[merged_idx++] = drec[dest_idx++]; + dest_size -= record_size; + } + + while (src_size > 0) { + mrec[merged_idx++] = srec[src_idx++]; + src_size -= record_size; + } + + kfree(dest->old_log); + dest->old_log = merged_buf; + dest->old_log_size = total; + + return 0; +} + static ssize_t ramoops_pstore_read(u64 *id, enum pstore_type_id *type, int *count, struct timespec *time, char **buf, bool *compressed, ssize_t *ecc_notice_size, struct pstore_info *psi) { - ssize_t size; + ssize_t size = 0; struct ramoops_context *cxt = psi->data; struct persistent_ram_zone *prz = NULL; int header_length = 0; + bool free_prz = false; /* Ramoops headers provide time stamps for PSTORE_TYPE_DMESG, but * PSTORE_TYPE_CONSOLE and PSTORE_TYPE_FTRACE don't currently have @@ -201,7 +256,7 @@ static ssize_t ramoops_pstore_read(u64 *id, enum pstore_type_id *type, /* Find the next valid persistent_ram_zone for DMESG */ while (cxt->dump_read_cnt < cxt->max_dump_cnt && !prz) { - prz = ramoops_get_next_prz(cxt->przs, &cxt->dump_read_cnt, + prz = ramoops_get_next_prz(cxt->dprzs, &cxt->dump_read_cnt, cxt->max_dump_cnt, id, type, PSTORE_TYPE_DMESG, 1); if (!prz_ok(prz)) @@ -219,14 +274,56 @@ static ssize_t ramoops_pstore_read(u64 *id, enum pstore_type_id *type, if (!prz_ok(prz)) prz = ramoops_get_next_prz(&cxt->cprz, &cxt->console_read_cnt, 1, id, type, PSTORE_TYPE_CONSOLE, 0); - if (!prz_ok(prz)) - prz = ramoops_get_next_prz(&cxt->fprz, &cxt->ftrace_read_cnt, - 1, id, type, PSTORE_TYPE_FTRACE, 0); + if (!prz_ok(prz)) prz = ramoops_get_next_prz(&cxt->mprz, &cxt->pmsg_read_cnt, 1, id, type, PSTORE_TYPE_PMSG, 0); - if (!prz_ok(prz)) - return 0; + + /* ftrace is last since it may want to dynamically allocate memory. */ + if (!prz_ok(prz)) { + if (!(cxt->flags & RAMOOPS_FLAG_FTRACE_PER_CPU)) { + prz = ramoops_get_next_prz(cxt->fprzs, + &cxt->ftrace_read_cnt, 1, id, type, + PSTORE_TYPE_FTRACE, 0); + } else { + /* + * Build a new dummy record which combines all the + * per-cpu records including metadata and ecc info. + */ + struct persistent_ram_zone *tmp_prz, *prz_next; + + tmp_prz = kzalloc(sizeof(struct persistent_ram_zone), + GFP_KERNEL); + if (!tmp_prz) + return -ENOMEM; + free_prz = true; + + while (cxt->ftrace_read_cnt < cxt->max_ftrace_cnt) { + prz_next = ramoops_get_next_prz(cxt->fprzs, + &cxt->ftrace_read_cnt, + cxt->max_ftrace_cnt, id, + type, PSTORE_TYPE_FTRACE, 0); + + if (!prz_ok(prz_next)) + continue; + + tmp_prz->ecc_info = prz_next->ecc_info; + tmp_prz->corrected_bytes += + prz_next->corrected_bytes; + tmp_prz->bad_blocks += prz_next->bad_blocks; + size = ftrace_log_combine(tmp_prz, prz_next); + if (size) + goto out; + } + *id = 0; + prz = tmp_prz; + } + } + + if (!prz_ok(prz)) { + size = 0; + goto out; + } size = persistent_ram_old_size(prz) - header_length; @@ -234,12 +331,21 @@ static ssize_t ramoops_pstore_read(u64 *id, enum pstore_type_id *type, *ecc_notice_size = persistent_ram_ecc_string(prz, NULL, 0); *buf = kmalloc(size + *ecc_notice_size + 1, GFP_KERNEL); - if (*buf == NULL) - return -ENOMEM; + if (*buf == NULL) { + size = -ENOMEM; + goto out; + } memcpy(*buf, (char *)persistent_ram_old(prz) + header_length, size); + persistent_ram_ecc_string(prz, *buf + size, *ecc_notice_size + 1); +out: + if (free_prz) { + kfree(prz->old_log); + kfree(prz); + } + return size; } @@ -283,15 +389,23 @@ static int notrace ramoops_pstore_write_buf(enum pstore_type_id type, persistent_ram_write(cxt->cprz, buf, size); return 0; } else if (type == PSTORE_TYPE_FTRACE) { - if (!cxt->fprz) + int zonenum; + + if (!cxt->fprzs) return -ENOMEM; - persistent_ram_write(cxt->fprz, buf, size); + /* + * Choose zone by if we're using per-cpu buffers. + */ + if (cxt->flags & RAMOOPS_FLAG_FTRACE_PER_CPU) + zonenum = smp_processor_id(); + else + zonenum = 0; + + persistent_ram_write(cxt->fprzs[zonenum], buf, size); return 0; } else if (type == PSTORE_TYPE_PMSG) { - if (!cxt->mprz) - return -ENOMEM; - persistent_ram_write(cxt->mprz, buf, size); - return 0; + pr_warn_ratelimited("PMSG shouldn't call %s\n", __func__); + return -EINVAL; } if (type != PSTORE_TYPE_DMESG) @@ -316,10 +430,10 @@ static int notrace ramoops_pstore_write_buf(enum pstore_type_id type, if (part != 1) return -ENOSPC; - if (!cxt->przs) + if (!cxt->dprzs) return -ENOSPC; - prz = cxt->przs[cxt->dump_write_cnt]; + prz = cxt->dprzs[cxt->dump_write_cnt]; hlen = ramoops_write_kmsg_hdr(prz, compressed); if (size + hlen > prz->buffer_size) @@ -359,13 +473,15 @@ static int ramoops_pstore_erase(enum pstore_type_id type, u64 id, int count, case PSTORE_TYPE_DMESG: if (id >= cxt->max_dump_cnt) return -EINVAL; - prz = cxt->przs[id]; + prz = cxt->dprzs[id]; break; case PSTORE_TYPE_CONSOLE: prz = cxt->cprz; break; case PSTORE_TYPE_FTRACE: - prz = cxt->fprz; + if (id >= cxt->max_ftrace_cnt) + return -EINVAL; + prz = cxt->fprzs[id]; break; case PSTORE_TYPE_PMSG: prz = cxt->mprz; @@ -396,68 +512,113 @@ static void ramoops_free_przs(struct ramoops_context *cxt) { int i; - if (!cxt->przs) - return; + /* Free dump PRZs */ + if (cxt->dprzs) { + for (i = 0; i < cxt->max_dump_cnt; i++) + persistent_ram_free(cxt->dprzs[i]); - for (i = 0; i < cxt->max_dump_cnt; i++) - persistent_ram_free(cxt->przs[i]); + kfree(cxt->dprzs); + cxt->max_dump_cnt = 0; + } - kfree(cxt->przs); - cxt->max_dump_cnt = 0; + /* Free ftrace PRZs */ + if (cxt->fprzs) { + for (i = 0; i < cxt->max_ftrace_cnt; i++) + persistent_ram_free(cxt->fprzs[i]); + kfree(cxt->fprzs); + cxt->max_ftrace_cnt = 0; + } } -static int ramoops_init_przs(struct device *dev, struct ramoops_context *cxt, - phys_addr_t *paddr, size_t dump_mem_sz) +static int ramoops_init_przs(const char *name, + struct device *dev, struct ramoops_context *cxt, + struct persistent_ram_zone ***przs, + phys_addr_t *paddr, size_t mem_sz, + ssize_t record_size, + unsigned int *cnt, u32 sig, u32 flags) { int err = -ENOMEM; int i; + size_t zone_sz; + struct persistent_ram_zone **prz_ar; - if (!cxt->record_size) + /* Allocate nothing for 0 mem_sz or 0 record_size. */ + if (mem_sz == 0 || record_size == 0) { + *cnt = 0; return 0; + } - if (*paddr + dump_mem_sz - cxt->phys_addr > cxt->size) { - dev_err(dev, "no room for dumps\n"); - return -ENOMEM; + /* + * If we have a negative record size, calculate it based on + * mem_sz / *cnt. If we have a positive record size, calculate + * cnt from mem_sz / record_size. + */ + if (record_size < 0) { + if (*cnt == 0) + return 0; + record_size = mem_sz / *cnt; + if (record_size == 0) { + dev_err(dev, "%s record size == 0 (%zu / %u)\n", + name, mem_sz, *cnt); + goto fail; + } + } else { + *cnt = mem_sz / record_size; + if (*cnt == 0) { + dev_err(dev, "%s record count == 0 (%zu / %zu)\n", + name, mem_sz, record_size); + goto fail; + } } - cxt->max_dump_cnt = dump_mem_sz / cxt->record_size; - if (!cxt->max_dump_cnt) - return -ENOMEM; + if (*paddr + mem_sz - cxt->phys_addr > cxt->size) { + dev_err(dev, "no room for %s mem region (0x%zx@0x%llx) in (0x%lx@0x%llx)\n", + name, + mem_sz, (unsigned long long)*paddr, + cxt->size, (unsigned long long)cxt->phys_addr); + goto fail; + } - cxt->przs = kzalloc(sizeof(*cxt->przs) * cxt->max_dump_cnt, - GFP_KERNEL); - if (!cxt->przs) { - dev_err(dev, "failed to initialize a prz array for dumps\n"); - goto fail_mem; + zone_sz = mem_sz / *cnt; + if (!zone_sz) { + dev_err(dev, "%s zone size == 0\n", name); + goto fail; } - for (i = 0; i < cxt->max_dump_cnt; i++) { - cxt->przs[i] = persistent_ram_new(*paddr, cxt->record_size, 0, + prz_ar = kcalloc(*cnt, sizeof(**przs), GFP_KERNEL); + if (!prz_ar) + goto fail; + + for (i = 0; i < *cnt; i++) { + prz_ar[i] = persistent_ram_new(*paddr, zone_sz, sig, &cxt->ecc_info, - cxt->memtype); - if (IS_ERR(cxt->przs[i])) { - err = PTR_ERR(cxt->przs[i]); - dev_err(dev, "failed to request mem region (0x%zx@0x%llx): %d\n", - cxt->record_size, (unsigned long long)*paddr, err); + cxt->memtype, flags); + if (IS_ERR(prz_ar[i])) { + err = PTR_ERR(prz_ar[i]); + dev_err(dev, "failed to request %s mem region (0x%zx@0x%llx): %d\n", + name, record_size, + (unsigned long long)*paddr, err); while (i > 0) { i--; - persistent_ram_free(cxt->przs[i]); + persistent_ram_free(prz_ar[i]); } - goto fail_prz; + kfree(prz_ar); + goto fail; } - *paddr += cxt->record_size; + *paddr += zone_sz; } + *przs = prz_ar; return 0; -fail_prz: - kfree(cxt->przs); -fail_mem: - cxt->max_dump_cnt = 0; + +fail: + *cnt = 0; return err; } -static int ramoops_init_prz(struct device *dev, struct ramoops_context *cxt, +static int ramoops_init_prz(const char *name, + struct device *dev, struct ramoops_context *cxt, struct persistent_ram_zone **prz, phys_addr_t *paddr, size_t sz, u32 sig) { @@ -465,18 +626,19 @@ static int ramoops_init_prz(struct device *dev, struct ramoops_context *cxt, return 0; if (*paddr + sz - cxt->phys_addr > cxt->size) { - dev_err(dev, "no room for mem region (0x%zx@0x%llx) in (0x%lx@0x%llx)\n", - sz, (unsigned long long)*paddr, + dev_err(dev, "no room for %s mem region (0x%zx@0x%llx) in (0x%lx@0x%llx)\n", + name, sz, (unsigned long long)*paddr, cxt->size, (unsigned long long)cxt->phys_addr); return -ENOMEM; } - *prz = persistent_ram_new(*paddr, sz, sig, &cxt->ecc_info, cxt->memtype); + *prz = persistent_ram_new(*paddr, sz, sig, &cxt->ecc_info, + cxt->memtype, 0); if (IS_ERR(*prz)) { int err = PTR_ERR(*prz); - dev_err(dev, "failed to request mem region (0x%zx@0x%llx): %d\n", - sz, (unsigned long long)*paddr, err); + dev_err(dev, "failed to request %s mem region (0x%zx@0x%llx): %d\n", + name, sz, (unsigned long long)*paddr, err); return err; } @@ -543,6 +705,7 @@ static int ramoops_parse_dt(struct platform_device *pdev, parse_size("ftrace-size", pdata->ftrace_size); parse_size("pmsg-size", pdata->pmsg_size); parse_size("ecc-size", pdata->ecc_info.ecc_size); + parse_size("flags", pdata->flags); #undef parse_size @@ -561,6 +724,7 @@ static int ramoops_probe(struct platform_device *pdev) if (dev_of_node(dev) && !pdata) { pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL); if (!pdata) { + pr_err("cannot allocate platform data buffer\n"); err = -ENOMEM; goto fail_out; } @@ -570,11 +734,20 @@ static int ramoops_probe(struct platform_device *pdev) goto fail_out; } - /* Only a single ramoops area allowed at a time, so fail extra + /* + * Only a single ramoops area allowed at a time, so fail extra * probes. */ - if (cxt->max_dump_cnt) + if (cxt->max_dump_cnt) { + pr_err("already initialized\n"); goto fail_out; + } + + /* Make sure we didn't get bogus platform data pointer. */ + if (!pdata) { + pr_err("NULL platform data\n"); + goto fail_out; + } if (!pdata->mem_size || (!pdata->record_size && !pdata->console_size && !pdata->ftrace_size && !pdata->pmsg_size)) { @@ -600,27 +773,37 @@ static int ramoops_probe(struct platform_device *pdev) cxt->ftrace_size = pdata->ftrace_size; cxt->pmsg_size = pdata->pmsg_size; cxt->dump_oops = pdata->dump_oops; + cxt->flags = pdata->flags; cxt->ecc_info = pdata->ecc_info; paddr = cxt->phys_addr; dump_mem_sz = cxt->size - cxt->console_size - cxt->ftrace_size - cxt->pmsg_size; - err = ramoops_init_przs(dev, cxt, &paddr, dump_mem_sz); + err = ramoops_init_przs("dump", dev, cxt, &cxt->dprzs, &paddr, + dump_mem_sz, cxt->record_size, + &cxt->max_dump_cnt, 0, 0); if (err) goto fail_out; - err = ramoops_init_prz(dev, cxt, &cxt->cprz, &paddr, + err = ramoops_init_prz("console", dev, cxt, &cxt->cprz, &paddr, cxt->console_size, 0); if (err) goto fail_init_cprz; - err = ramoops_init_prz(dev, cxt, &cxt->fprz, &paddr, cxt->ftrace_size, - LINUX_VERSION_CODE); + cxt->max_ftrace_cnt = (cxt->flags & RAMOOPS_FLAG_FTRACE_PER_CPU) + ? nr_cpu_ids + : 1; + err = ramoops_init_przs("ftrace", dev, cxt, &cxt->fprzs, &paddr, + cxt->ftrace_size, -1, + &cxt->max_ftrace_cnt, LINUX_VERSION_CODE, + (cxt->flags & RAMOOPS_FLAG_FTRACE_PER_CPU) + ? PRZ_FLAG_NO_LOCK : 0); if (err) goto fail_init_fprz; - err = ramoops_init_prz(dev, cxt, &cxt->mprz, &paddr, cxt->pmsg_size, 0); + err = ramoops_init_prz("pmsg", dev, cxt, &cxt->mprz, &paddr, + cxt->pmsg_size, 0); if (err) goto fail_init_mprz; @@ -680,7 +863,6 @@ fail_clear: cxt->pstore.bufsize = 0; persistent_ram_free(cxt->mprz); fail_init_mprz: - persistent_ram_free(cxt->fprz); fail_init_fprz: persistent_ram_free(cxt->cprz); fail_init_cprz: @@ -699,7 +881,6 @@ static int ramoops_remove(struct platform_device *pdev) cxt->pstore.bufsize = 0; persistent_ram_free(cxt->mprz); - persistent_ram_free(cxt->fprz); persistent_ram_free(cxt->cprz); ramoops_free_przs(cxt); @@ -741,6 +922,8 @@ static void ramoops_register_dummy(void) dummy_data->ftrace_size = ramoops_ftrace_size; dummy_data->pmsg_size = ramoops_pmsg_size; dummy_data->dump_oops = dump_oops; + dummy_data->flags = RAMOOPS_FLAG_FTRACE_PER_CPU; + /* * For backwards compatibility ramoops.ecc=1 means 16 bytes ECC * (using 1 byte for ECC isn't much of use anyway). diff --git a/fs/pstore/ram_core.c b/fs/pstore/ram_core.c index 3975deec02f8..a857338b7dab 100644 --- a/fs/pstore/ram_core.c +++ b/fs/pstore/ram_core.c @@ -48,16 +48,15 @@ static inline size_t buffer_start(struct persistent_ram_zone *prz) return atomic_read(&prz->buffer->start); } -static DEFINE_RAW_SPINLOCK(buffer_lock); - /* increase and wrap the start pointer, returning the old value */ static size_t buffer_start_add(struct persistent_ram_zone *prz, size_t a) { int old; int new; - unsigned long flags; + unsigned long flags = 0; - raw_spin_lock_irqsave(&buffer_lock, flags); + if (!(prz->flags & PRZ_FLAG_NO_LOCK)) + raw_spin_lock_irqsave(&prz->buffer_lock, flags); old = atomic_read(&prz->buffer->start); new = old + a; @@ -65,7 +64,8 @@ static size_t buffer_start_add(struct persistent_ram_zone *prz, size_t a) new -= prz->buffer_size; atomic_set(&prz->buffer->start, new); - raw_spin_unlock_irqrestore(&buffer_lock, flags); + if (!(prz->flags & PRZ_FLAG_NO_LOCK)) + raw_spin_unlock_irqrestore(&prz->buffer_lock, flags); return old; } @@ -75,9 +75,10 @@ static void buffer_size_add(struct persistent_ram_zone *prz, size_t a) { size_t old; size_t new; - unsigned long flags; + unsigned long flags = 0; - raw_spin_lock_irqsave(&buffer_lock, flags); + if (!(prz->flags & PRZ_FLAG_NO_LOCK)) + raw_spin_lock_irqsave(&prz->buffer_lock, flags); old = atomic_read(&prz->buffer->size); if (old == prz->buffer_size) @@ -89,7 +90,8 @@ static void buffer_size_add(struct persistent_ram_zone *prz, size_t a) atomic_set(&prz->buffer->size, new); exit: - raw_spin_unlock_irqrestore(&buffer_lock, flags); + if (!(prz->flags & PRZ_FLAG_NO_LOCK)) + raw_spin_unlock_irqrestore(&prz->buffer_lock, flags); } static void notrace persistent_ram_encode_rs8(struct persistent_ram_zone *prz, @@ -465,7 +467,8 @@ static int persistent_ram_buffer_map(phys_addr_t start, phys_addr_t size, } static int persistent_ram_post_init(struct persistent_ram_zone *prz, u32 sig, - struct persistent_ram_ecc_info *ecc_info) + struct persistent_ram_ecc_info *ecc_info, + unsigned long flags) { int ret; @@ -493,6 +496,8 @@ static int persistent_ram_post_init(struct persistent_ram_zone *prz, u32 sig, prz->buffer->sig = sig; persistent_ram_zap(prz); + prz->buffer_lock = __RAW_SPIN_LOCK_UNLOCKED(buffer_lock); + prz->flags = flags; return 0; } @@ -517,7 +522,7 @@ void persistent_ram_free(struct persistent_ram_zone *prz) struct persistent_ram_zone *persistent_ram_new(phys_addr_t start, size_t size, u32 sig, struct persistent_ram_ecc_info *ecc_info, - unsigned int memtype) + unsigned int memtype, u32 flags) { struct persistent_ram_zone *prz; int ret = -ENOMEM; @@ -532,7 +537,7 @@ struct persistent_ram_zone *persistent_ram_new(phys_addr_t start, size_t size, if (ret) goto err; - ret = persistent_ram_post_init(prz, sig, ecc_info); + ret = persistent_ram_post_init(prz, sig, ecc_info, flags); if (ret) goto err; diff --git a/fs/quota/netlink.c b/fs/quota/netlink.c index 8b252673d454..e99b1a72d9a7 100644 --- a/fs/quota/netlink.c +++ b/fs/quota/netlink.c @@ -12,14 +12,8 @@ static const struct genl_multicast_group quota_mcgrps[] = { }; /* Netlink family structure for quota */ -static struct genl_family quota_genl_family = { - /* - * Needed due to multicast group ID abuse - old code assumed - * the family ID was also a valid multicast group ID (which - * isn't true) and userspace might thus rely on it. Assign a - * static ID for this group to make dealing with that easier. - */ - .id = GENL_ID_VFS_DQUOT, +static struct genl_family quota_genl_family __ro_after_init = { + .module = THIS_MODULE, .hdrsize = 0, .name = "VFS_DQUOT", .version = 1, diff --git a/fs/reiserfs/inode.c b/fs/reiserfs/inode.c index 58b2dedb2a3a..cfeae9b0a2b7 100644 --- a/fs/reiserfs/inode.c +++ b/fs/reiserfs/inode.c @@ -19,6 +19,7 @@ #include <linux/quotaops.h> #include <linux/swap.h> #include <linux/uio.h> +#include <linux/bio.h> int reiserfs_commit_write(struct file *f, struct page *page, unsigned from, unsigned to); diff --git a/fs/reiserfs/journal.c b/fs/reiserfs/journal.c index bc2dde2423c2..aa40c242f1db 100644 --- a/fs/reiserfs/journal.c +++ b/fs/reiserfs/journal.c @@ -1111,7 +1111,8 @@ static int flush_commit_list(struct super_block *s, mark_buffer_dirty(jl->j_commit_bh) ; depth = reiserfs_write_unlock_nested(s); if (reiserfs_barrier_flush(s)) - __sync_dirty_buffer(jl->j_commit_bh, WRITE_FLUSH_FUA); + __sync_dirty_buffer(jl->j_commit_bh, + REQ_PREFLUSH | REQ_FUA); else sync_dirty_buffer(jl->j_commit_bh); reiserfs_write_lock_nested(s, depth); @@ -1269,7 +1270,8 @@ static int _update_journal_header_block(struct super_block *sb, depth = reiserfs_write_unlock_nested(sb); if (reiserfs_barrier_flush(sb)) - __sync_dirty_buffer(journal->j_header_bh, WRITE_FLUSH_FUA); + __sync_dirty_buffer(journal->j_header_bh, + REQ_PREFLUSH | REQ_FUA); else sync_dirty_buffer(journal->j_header_bh); diff --git a/fs/reiserfs/stree.c b/fs/reiserfs/stree.c index a97e352d05d3..0037aea97d39 100644 --- a/fs/reiserfs/stree.c +++ b/fs/reiserfs/stree.c @@ -11,6 +11,7 @@ #include <linux/time.h> #include <linux/string.h> #include <linux/pagemap.h> +#include <linux/bio.h> #include "reiserfs.h" #include <linux/buffer_head.h> #include <linux/quotaops.h> diff --git a/fs/splice.c b/fs/splice.c index 5a7750bd2eea..8ed7c9d8c0fb 100644 --- a/fs/splice.c +++ b/fs/splice.c @@ -17,6 +17,7 @@ * Copyright (C) 2006 Ingo Molnar <mingo@elte.hu> * */ +#include <linux/bvec.h> #include <linux/fs.h> #include <linux/file.h> #include <linux/pagemap.h> diff --git a/fs/squashfs/block.c b/fs/squashfs/block.c index ce62a380314f..2751476e6b6e 100644 --- a/fs/squashfs/block.c +++ b/fs/squashfs/block.c @@ -31,6 +31,7 @@ #include <linux/slab.h> #include <linux/string.h> #include <linux/buffer_head.h> +#include <linux/bio.h> #include "squashfs_fs.h" #include "squashfs_fs_sb.h" diff --git a/fs/udf/dir.c b/fs/udf/dir.c index aaec13c95253..2d0e028067eb 100644 --- a/fs/udf/dir.c +++ b/fs/udf/dir.c @@ -30,6 +30,7 @@ #include <linux/errno.h> #include <linux/mm.h> #include <linux/slab.h> +#include <linux/bio.h> #include "udf_i.h" #include "udf_sb.h" diff --git a/fs/udf/directory.c b/fs/udf/directory.c index 988d5352bdb8..7aa48bd7cbaf 100644 --- a/fs/udf/directory.c +++ b/fs/udf/directory.c @@ -16,6 +16,7 @@ #include <linux/fs.h> #include <linux/string.h> +#include <linux/bio.h> struct fileIdentDesc *udf_fileident_read(struct inode *dir, loff_t *nf_pos, struct udf_fileident_bh *fibh, diff --git a/fs/udf/inode.c b/fs/udf/inode.c index aad46401ede5..0f3db71753aa 100644 --- a/fs/udf/inode.c +++ b/fs/udf/inode.c @@ -38,6 +38,7 @@ #include <linux/crc-itu-t.h> #include <linux/mpage.h> #include <linux/uio.h> +#include <linux/bio.h> #include "udf_i.h" #include "udf_sb.h" diff --git a/fs/ufs/balloc.c b/fs/ufs/balloc.c index 67e085d591d8..b035af54f538 100644 --- a/fs/ufs/balloc.c +++ b/fs/ufs/balloc.c @@ -15,6 +15,7 @@ #include <linux/buffer_head.h> #include <linux/capability.h> #include <linux/bitops.h> +#include <linux/bio.h> #include <asm/byteorder.h> #include "ufs_fs.h" diff --git a/fs/xfs/xfs_aops.c b/fs/xfs/xfs_aops.c index 3e57a56cf829..6be5204a06d3 100644 --- a/fs/xfs/xfs_aops.c +++ b/fs/xfs/xfs_aops.c @@ -495,8 +495,8 @@ xfs_submit_ioend( ioend->io_bio->bi_private = ioend; ioend->io_bio->bi_end_io = xfs_end_bio; - bio_set_op_attrs(ioend->io_bio, REQ_OP_WRITE, - (wbc->sync_mode == WB_SYNC_ALL) ? WRITE_SYNC : 0); + ioend->io_bio->bi_opf = REQ_OP_WRITE | wbc_to_write_flags(wbc); + /* * If we are failing the IO now, just mark the ioend with an * error and finish it. This will run IO completion immediately @@ -567,8 +567,7 @@ xfs_chain_bio( bio_chain(ioend->io_bio, new); bio_get(ioend->io_bio); /* for xfs_destroy_ioend */ - bio_set_op_attrs(ioend->io_bio, REQ_OP_WRITE, - (wbc->sync_mode == WB_SYNC_ALL) ? WRITE_SYNC : 0); + ioend->io_bio->bi_opf = REQ_OP_WRITE | wbc_to_write_flags(wbc); submit_bio(ioend->io_bio); ioend->io_bio = new; } diff --git a/fs/xfs/xfs_buf.c b/fs/xfs/xfs_buf.c index b5b9bffe3520..33c435f3316c 100644 --- a/fs/xfs/xfs_buf.c +++ b/fs/xfs/xfs_buf.c @@ -1304,7 +1304,7 @@ _xfs_buf_ioapply( if (bp->b_flags & XBF_WRITE) { op = REQ_OP_WRITE; if (bp->b_flags & XBF_SYNCIO) - op_flags = WRITE_SYNC; + op_flags = REQ_SYNC; if (bp->b_flags & XBF_FUA) op_flags |= REQ_FUA; if (bp->b_flags & XBF_FLUSH) |