aboutsummaryrefslogtreecommitdiff
path: root/fs
diff options
context:
space:
mode:
Diffstat (limited to 'fs')
-rw-r--r--fs/aio.c42
-rw-r--r--fs/bio-integrity.c5
-rw-r--r--fs/bio.c6
-rw-r--r--fs/btrfs/ctree.h9
-rw-r--r--fs/btrfs/extent-tree.c45
-rw-r--r--fs/btrfs/volumes.c8
-rw-r--r--fs/buffer.c23
-rw-r--r--fs/ecryptfs/crypto.c2
-rw-r--r--fs/ecryptfs/ecryptfs_kernel.h3
-rw-r--r--fs/ecryptfs/keystore.c3
-rw-r--r--fs/ecryptfs/main.c5
-rw-r--r--fs/ext4/extents.c6
-rw-r--r--fs/ext4/ialloc.c4
-rw-r--r--fs/ext4/mballoc.c13
-rw-r--r--fs/lockd/clntlock.c51
-rw-r--r--fs/nfs/client.c73
-rw-r--r--fs/nfs/dir.c8
-rw-r--r--fs/nfs/nfs3acl.c27
-rw-r--r--fs/nfs/nfs3xdr.c34
-rw-r--r--fs/nfs/nfs4namespace.c15
-rw-r--r--fs/nfsd/nfs4xdr.c1
-rw-r--r--fs/ocfs2/alloc.c3
-rw-r--r--fs/ocfs2/aops.c7
-rw-r--r--fs/ocfs2/namei.c3
-rw-r--r--fs/ocfs2/ocfs2_fs.h6
-rw-r--r--fs/ocfs2/xattr.c30
-rw-r--r--fs/proc/base.c16
-rw-r--r--fs/ramfs/file-nommu.c4
28 files changed, 348 insertions, 104 deletions
diff --git a/fs/aio.c b/fs/aio.c
index 8fa77e233944..76da12537956 100644
--- a/fs/aio.c
+++ b/fs/aio.c
@@ -443,7 +443,7 @@ static struct kiocb *__aio_get_req(struct kioctx *ctx)
req->private = NULL;
req->ki_iovec = NULL;
INIT_LIST_HEAD(&req->ki_run_list);
- req->ki_eventfd = ERR_PTR(-EINVAL);
+ req->ki_eventfd = NULL;
/* Check if the completion queue has enough free space to
* accept an event from this io.
@@ -485,8 +485,6 @@ static inline void really_put_req(struct kioctx *ctx, struct kiocb *req)
{
assert_spin_locked(&ctx->ctx_lock);
- if (!IS_ERR(req->ki_eventfd))
- fput(req->ki_eventfd);
if (req->ki_dtor)
req->ki_dtor(req);
if (req->ki_iovec != &req->ki_inline_vec)
@@ -508,8 +506,11 @@ static void aio_fput_routine(struct work_struct *data)
list_del(&req->ki_list);
spin_unlock_irq(&fput_lock);
- /* Complete the fput */
- __fput(req->ki_filp);
+ /* Complete the fput(s) */
+ if (req->ki_filp != NULL)
+ __fput(req->ki_filp);
+ if (req->ki_eventfd != NULL)
+ __fput(req->ki_eventfd);
/* Link the iocb into the context's free list */
spin_lock_irq(&ctx->ctx_lock);
@@ -527,12 +528,14 @@ static void aio_fput_routine(struct work_struct *data)
*/
static int __aio_put_req(struct kioctx *ctx, struct kiocb *req)
{
+ int schedule_putreq = 0;
+
dprintk(KERN_DEBUG "aio_put(%p): f_count=%ld\n",
req, atomic_long_read(&req->ki_filp->f_count));
assert_spin_locked(&ctx->ctx_lock);
- req->ki_users --;
+ req->ki_users--;
BUG_ON(req->ki_users < 0);
if (likely(req->ki_users))
return 0;
@@ -540,10 +543,23 @@ static int __aio_put_req(struct kioctx *ctx, struct kiocb *req)
req->ki_cancel = NULL;
req->ki_retry = NULL;
- /* Must be done under the lock to serialise against cancellation.
- * Call this aio_fput as it duplicates fput via the fput_work.
+ /*
+ * Try to optimize the aio and eventfd file* puts, by avoiding to
+ * schedule work in case it is not __fput() time. In normal cases,
+ * we would not be holding the last reference to the file*, so
+ * this function will be executed w/out any aio kthread wakeup.
*/
- if (unlikely(atomic_long_dec_and_test(&req->ki_filp->f_count))) {
+ if (unlikely(atomic_long_dec_and_test(&req->ki_filp->f_count)))
+ schedule_putreq++;
+ else
+ req->ki_filp = NULL;
+ if (req->ki_eventfd != NULL) {
+ if (unlikely(atomic_long_dec_and_test(&req->ki_eventfd->f_count)))
+ schedule_putreq++;
+ else
+ req->ki_eventfd = NULL;
+ }
+ if (unlikely(schedule_putreq)) {
get_ioctx(ctx);
spin_lock(&fput_lock);
list_add(&req->ki_list, &fput_head);
@@ -571,7 +587,7 @@ int aio_put_req(struct kiocb *req)
static struct kioctx *lookup_ioctx(unsigned long ctx_id)
{
struct mm_struct *mm = current->mm;
- struct kioctx *ctx = NULL;
+ struct kioctx *ctx, *ret = NULL;
struct hlist_node *n;
rcu_read_lock();
@@ -579,12 +595,13 @@ static struct kioctx *lookup_ioctx(unsigned long ctx_id)
hlist_for_each_entry_rcu(ctx, n, &mm->ioctx_list, list) {
if (ctx->user_id == ctx_id && !ctx->dead) {
get_ioctx(ctx);
+ ret = ctx;
break;
}
}
rcu_read_unlock();
- return ctx;
+ return ret;
}
/*
@@ -1009,7 +1026,7 @@ int aio_complete(struct kiocb *iocb, long res, long res2)
* eventfd. The eventfd_signal() function is safe to be called
* from IRQ context.
*/
- if (!IS_ERR(iocb->ki_eventfd))
+ if (iocb->ki_eventfd != NULL)
eventfd_signal(iocb->ki_eventfd, 1);
put_rq:
@@ -1608,6 +1625,7 @@ static int io_submit_one(struct kioctx *ctx, struct iocb __user *user_iocb,
req->ki_eventfd = eventfd_fget((int) iocb->aio_resfd);
if (IS_ERR(req->ki_eventfd)) {
ret = PTR_ERR(req->ki_eventfd);
+ req->ki_eventfd = NULL;
goto out_put_req;
}
}
diff --git a/fs/bio-integrity.c b/fs/bio-integrity.c
index 549b0144da11..fe2b1aa2464e 100644
--- a/fs/bio-integrity.c
+++ b/fs/bio-integrity.c
@@ -685,19 +685,20 @@ EXPORT_SYMBOL(bio_integrity_split);
* bio_integrity_clone - Callback for cloning bios with integrity metadata
* @bio: New bio
* @bio_src: Original bio
+ * @gfp_mask: Memory allocation mask
* @bs: bio_set to allocate bip from
*
* Description: Called to allocate a bip when cloning a bio
*/
int bio_integrity_clone(struct bio *bio, struct bio *bio_src,
- struct bio_set *bs)
+ gfp_t gfp_mask, struct bio_set *bs)
{
struct bio_integrity_payload *bip_src = bio_src->bi_integrity;
struct bio_integrity_payload *bip;
BUG_ON(bip_src == NULL);
- bip = bio_integrity_alloc_bioset(bio, GFP_NOIO, bip_src->bip_vcnt, bs);
+ bip = bio_integrity_alloc_bioset(bio, gfp_mask, bip_src->bip_vcnt, bs);
if (bip == NULL)
return -EIO;
diff --git a/fs/bio.c b/fs/bio.c
index 124b95c4d582..d4f06327c810 100644
--- a/fs/bio.c
+++ b/fs/bio.c
@@ -463,10 +463,12 @@ struct bio *bio_clone(struct bio *bio, gfp_t gfp_mask)
if (bio_integrity(bio)) {
int ret;
- ret = bio_integrity_clone(b, bio, fs_bio_set);
+ ret = bio_integrity_clone(b, bio, gfp_mask, fs_bio_set);
- if (ret < 0)
+ if (ret < 0) {
+ bio_put(b);
return NULL;
+ }
}
return b;
diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h
index 82491ba8fa40..5e1d4e30e9d8 100644
--- a/fs/btrfs/ctree.h
+++ b/fs/btrfs/ctree.h
@@ -784,7 +784,14 @@ struct btrfs_fs_info {
struct list_head dirty_cowonly_roots;
struct btrfs_fs_devices *fs_devices;
+
+ /*
+ * the space_info list is almost entirely read only. It only changes
+ * when we add a new raid type to the FS, and that happens
+ * very rarely. RCU is used to protect it.
+ */
struct list_head space_info;
+
spinlock_t delalloc_lock;
spinlock_t new_trans_lock;
u64 delalloc_bytes;
@@ -1797,6 +1804,8 @@ int btrfs_cleanup_reloc_trees(struct btrfs_root *root);
int btrfs_reloc_clone_csums(struct inode *inode, u64 file_pos, u64 len);
u64 btrfs_reduce_alloc_profile(struct btrfs_root *root, u64 flags);
void btrfs_set_inode_space_info(struct btrfs_root *root, struct inode *ionde);
+void btrfs_clear_space_info_full(struct btrfs_fs_info *info);
+
int btrfs_check_metadata_free_space(struct btrfs_root *root);
int btrfs_check_data_free_space(struct btrfs_root *root, struct inode *inode,
u64 bytes);
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index 9abf81f71c46..fefe83ad2059 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -20,6 +20,7 @@
#include <linux/writeback.h>
#include <linux/blkdev.h>
#include <linux/sort.h>
+#include <linux/rcupdate.h>
#include "compat.h"
#include "hash.h"
#include "crc32c.h"
@@ -330,13 +331,33 @@ static struct btrfs_space_info *__find_space_info(struct btrfs_fs_info *info,
{
struct list_head *head = &info->space_info;
struct btrfs_space_info *found;
- list_for_each_entry(found, head, list) {
- if (found->flags == flags)
+
+ rcu_read_lock();
+ list_for_each_entry_rcu(found, head, list) {
+ if (found->flags == flags) {
+ rcu_read_unlock();
return found;
+ }
}
+ rcu_read_unlock();
return NULL;
}
+/*
+ * after adding space to the filesystem, we need to clear the full flags
+ * on all the space infos.
+ */
+void btrfs_clear_space_info_full(struct btrfs_fs_info *info)
+{
+ struct list_head *head = &info->space_info;
+ struct btrfs_space_info *found;
+
+ rcu_read_lock();
+ list_for_each_entry_rcu(found, head, list)
+ found->full = 0;
+ rcu_read_unlock();
+}
+
static u64 div_factor(u64 num, int factor)
{
if (factor == 10)
@@ -1903,7 +1924,6 @@ static int update_space_info(struct btrfs_fs_info *info, u64 flags,
if (!found)
return -ENOMEM;
- list_add(&found->list, &info->space_info);
INIT_LIST_HEAD(&found->block_groups);
init_rwsem(&found->groups_sem);
spin_lock_init(&found->lock);
@@ -1917,6 +1937,7 @@ static int update_space_info(struct btrfs_fs_info *info, u64 flags,
found->full = 0;
found->force_alloc = 0;
*space_info = found;
+ list_add_rcu(&found->list, &info->space_info);
return 0;
}
@@ -6320,6 +6341,7 @@ out:
int btrfs_free_block_groups(struct btrfs_fs_info *info)
{
struct btrfs_block_group_cache *block_group;
+ struct btrfs_space_info *space_info;
struct rb_node *n;
spin_lock(&info->block_group_cache_lock);
@@ -6341,6 +6363,23 @@ int btrfs_free_block_groups(struct btrfs_fs_info *info)
spin_lock(&info->block_group_cache_lock);
}
spin_unlock(&info->block_group_cache_lock);
+
+ /* now that all the block groups are freed, go through and
+ * free all the space_info structs. This is only called during
+ * the final stages of unmount, and so we know nobody is
+ * using them. We call synchronize_rcu() once before we start,
+ * just to be on the safe side.
+ */
+ synchronize_rcu();
+
+ while(!list_empty(&info->space_info)) {
+ space_info = list_entry(info->space_info.next,
+ struct btrfs_space_info,
+ list);
+
+ list_del(&space_info->list);
+ kfree(space_info);
+ }
return 0;
}
diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index 1316139bf9e8..dd06e18e5aac 100644
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -1374,6 +1374,12 @@ int btrfs_init_new_device(struct btrfs_root *root, char *device_path)
ret = btrfs_add_device(trans, root, device);
}
+ /*
+ * we've got more storage, clear any full flags on the space
+ * infos
+ */
+ btrfs_clear_space_info_full(root->fs_info);
+
unlock_chunks(root);
btrfs_commit_transaction(trans, root);
@@ -1459,6 +1465,8 @@ static int __btrfs_grow_device(struct btrfs_trans_handle *trans,
device->fs_devices->total_rw_bytes += diff;
device->total_bytes = new_size;
+ btrfs_clear_space_info_full(device->dev_root->fs_info);
+
return btrfs_update_device(trans, device);
}
diff --git a/fs/buffer.c b/fs/buffer.c
index 9f697419ed8e..891e1c78e4f1 100644
--- a/fs/buffer.c
+++ b/fs/buffer.c
@@ -760,15 +760,9 @@ EXPORT_SYMBOL(mark_buffer_dirty_inode);
* If warn is true, then emit a warning if the page is not uptodate and has
* not been truncated.
*/
-static int __set_page_dirty(struct page *page,
+static void __set_page_dirty(struct page *page,
struct address_space *mapping, int warn)
{
- if (unlikely(!mapping))
- return !TestSetPageDirty(page);
-
- if (TestSetPageDirty(page))
- return 0;
-
spin_lock_irq(&mapping->tree_lock);
if (page->mapping) { /* Race with truncate? */
WARN_ON_ONCE(warn && !PageUptodate(page));
@@ -785,8 +779,6 @@ static int __set_page_dirty(struct page *page,
}
spin_unlock_irq(&mapping->tree_lock);
__mark_inode_dirty(mapping->host, I_DIRTY_PAGES);
-
- return 1;
}
/*
@@ -816,6 +808,7 @@ static int __set_page_dirty(struct page *page,
*/
int __set_page_dirty_buffers(struct page *page)
{
+ int newly_dirty;
struct address_space *mapping = page_mapping(page);
if (unlikely(!mapping))
@@ -831,9 +824,12 @@ int __set_page_dirty_buffers(struct page *page)
bh = bh->b_this_page;
} while (bh != head);
}
+ newly_dirty = !TestSetPageDirty(page);
spin_unlock(&mapping->private_lock);
- return __set_page_dirty(page, mapping, 1);
+ if (newly_dirty)
+ __set_page_dirty(page, mapping, 1);
+ return newly_dirty;
}
EXPORT_SYMBOL(__set_page_dirty_buffers);
@@ -1262,8 +1258,11 @@ void mark_buffer_dirty(struct buffer_head *bh)
return;
}
- if (!test_set_buffer_dirty(bh))
- __set_page_dirty(bh->b_page, page_mapping(bh->b_page), 0);
+ if (!test_set_buffer_dirty(bh)) {
+ struct page *page = bh->b_page;
+ if (!TestSetPageDirty(page))
+ __set_page_dirty(page, page_mapping(page), 0);
+ }
}
/*
diff --git a/fs/ecryptfs/crypto.c b/fs/ecryptfs/crypto.c
index f6caeb1d1106..bdca1f4b3a3e 100644
--- a/fs/ecryptfs/crypto.c
+++ b/fs/ecryptfs/crypto.c
@@ -946,6 +946,8 @@ static int ecryptfs_copy_mount_wide_sigs_to_inode_sigs(
list_for_each_entry(global_auth_tok,
&mount_crypt_stat->global_auth_tok_list,
mount_crypt_stat_list) {
+ if (global_auth_tok->flags & ECRYPTFS_AUTH_TOK_FNEK)
+ continue;
rc = ecryptfs_add_keysig(crypt_stat, global_auth_tok->sig);
if (rc) {
printk(KERN_ERR "Error adding keysig; rc = [%d]\n", rc);
diff --git a/fs/ecryptfs/ecryptfs_kernel.h b/fs/ecryptfs/ecryptfs_kernel.h
index c11fc95714ab..eb2267eca1fe 100644
--- a/fs/ecryptfs/ecryptfs_kernel.h
+++ b/fs/ecryptfs/ecryptfs_kernel.h
@@ -328,6 +328,7 @@ struct ecryptfs_dentry_info {
*/
struct ecryptfs_global_auth_tok {
#define ECRYPTFS_AUTH_TOK_INVALID 0x00000001
+#define ECRYPTFS_AUTH_TOK_FNEK 0x00000002
u32 flags;
struct list_head mount_crypt_stat_list;
struct key *global_auth_tok_key;
@@ -696,7 +697,7 @@ ecryptfs_write_header_metadata(char *virt,
int ecryptfs_add_keysig(struct ecryptfs_crypt_stat *crypt_stat, char *sig);
int
ecryptfs_add_global_auth_tok(struct ecryptfs_mount_crypt_stat *mount_crypt_stat,
- char *sig);
+ char *sig, u32 global_auth_tok_flags);
int ecryptfs_get_global_auth_tok_for_sig(
struct ecryptfs_global_auth_tok **global_auth_tok,
struct ecryptfs_mount_crypt_stat *mount_crypt_stat, char *sig);
diff --git a/fs/ecryptfs/keystore.c b/fs/ecryptfs/keystore.c
index ff539420cc6f..e4a6223c3145 100644
--- a/fs/ecryptfs/keystore.c
+++ b/fs/ecryptfs/keystore.c
@@ -2375,7 +2375,7 @@ struct kmem_cache *ecryptfs_global_auth_tok_cache;
int
ecryptfs_add_global_auth_tok(struct ecryptfs_mount_crypt_stat *mount_crypt_stat,
- char *sig)
+ char *sig, u32 global_auth_tok_flags)
{
struct ecryptfs_global_auth_tok *new_auth_tok;
int rc = 0;
@@ -2389,6 +2389,7 @@ ecryptfs_add_global_auth_tok(struct ecryptfs_mount_crypt_stat *mount_crypt_stat,
goto out;
}
memcpy(new_auth_tok->sig, sig, ECRYPTFS_SIG_SIZE_HEX);
+ new_auth_tok->flags = global_auth_tok_flags;
new_auth_tok->sig[ECRYPTFS_SIG_SIZE_HEX] = '\0';
mutex_lock(&mount_crypt_stat->global_auth_tok_list_mutex);
list_add(&new_auth_tok->mount_crypt_stat_list,
diff --git a/fs/ecryptfs/main.c b/fs/ecryptfs/main.c
index 789cf2e1be1e..aed56c25539b 100644
--- a/fs/ecryptfs/main.c
+++ b/fs/ecryptfs/main.c
@@ -319,7 +319,7 @@ static int ecryptfs_parse_options(struct super_block *sb, char *options)
case ecryptfs_opt_ecryptfs_sig:
sig_src = args[0].from;
rc = ecryptfs_add_global_auth_tok(mount_crypt_stat,
- sig_src);
+ sig_src, 0);
if (rc) {
printk(KERN_ERR "Error attempting to register "
"global sig; rc = [%d]\n", rc);
@@ -370,7 +370,8 @@ static int ecryptfs_parse_options(struct super_block *sb, char *options)
ECRYPTFS_SIG_SIZE_HEX] = '\0';
rc = ecryptfs_add_global_auth_tok(
mount_crypt_stat,
- mount_crypt_stat->global_default_fnek_sig);
+ mount_crypt_stat->global_default_fnek_sig,
+ ECRYPTFS_AUTH_TOK_FNEK);
if (rc) {
printk(KERN_ERR "Error attempting to register "
"global fnek sig [%s]; rc = [%d]\n",
diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c
index e2eab196875f..e0aa4fe4f596 100644
--- a/fs/ext4/extents.c
+++ b/fs/ext4/extents.c
@@ -1122,7 +1122,8 @@ ext4_ext_search_right(struct inode *inode, struct ext4_ext_path *path,
struct ext4_extent_idx *ix;
struct ext4_extent *ex;
ext4_fsblk_t block;
- int depth, ee_len;
+ int depth; /* Note, NOT eh_depth; depth from top of tree */
+ int ee_len;
BUG_ON(path == NULL);
depth = path->p_depth;
@@ -1179,7 +1180,8 @@ got_index:
if (bh == NULL)
return -EIO;
eh = ext_block_hdr(bh);
- if (ext4_ext_check_header(inode, eh, depth)) {
+ /* subtract from p_depth to get proper eh_depth */
+ if (ext4_ext_check_header(inode, eh, path->p_depth - depth)) {
put_bh(bh);
return -EIO;
}
diff --git a/fs/ext4/ialloc.c b/fs/ext4/ialloc.c
index 627f8c3337a3..2d2b3585ee91 100644
--- a/fs/ext4/ialloc.c
+++ b/fs/ext4/ialloc.c
@@ -698,6 +698,7 @@ struct inode *ext4_new_inode(handle_t *handle, struct inode *dir, int mode)
struct inode *ret;
ext4_group_t i;
int free = 0;
+ static int once = 1;
ext4_group_t flex_group;
/* Cannot create files in a deleted directory */
@@ -719,7 +720,8 @@ struct inode *ext4_new_inode(handle_t *handle, struct inode *dir, int mode)
ret2 = find_group_flex(sb, dir, &group);
if (ret2 == -1) {
ret2 = find_group_other(sb, dir, &group);
- if (ret2 == 0 && printk_ratelimit())
+ if (ret2 == 0 && once)
+ once = 0;
printk(KERN_NOTICE "ext4: find_group_flex "
"failed, fallback succeeded dir %lu\n",
dir->i_ino);
diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c
index 4415beeb0b62..9f61e62f435f 100644
--- a/fs/ext4/mballoc.c
+++ b/fs/ext4/mballoc.c
@@ -1447,7 +1447,7 @@ static void ext4_mb_measure_extent(struct ext4_allocation_context *ac,
struct ext4_free_extent *gex = &ac->ac_g_ex;
BUG_ON(ex->fe_len <= 0);
- BUG_ON(ex->fe_len >= EXT4_BLOCKS_PER_GROUP(ac->ac_sb));
+ BUG_ON(ex->fe_len > EXT4_BLOCKS_PER_GROUP(ac->ac_sb));
BUG_ON(ex->fe_start >= EXT4_BLOCKS_PER_GROUP(ac->ac_sb));
BUG_ON(ac->ac_status != AC_STATUS_CONTINUE);
@@ -3292,7 +3292,7 @@ ext4_mb_normalize_request(struct ext4_allocation_context *ac,
}
BUG_ON(start + size <= ac->ac_o_ex.fe_logical &&
start > ac->ac_o_ex.fe_logical);
- BUG_ON(size <= 0 || size >= EXT4_BLOCKS_PER_GROUP(ac->ac_sb));
+ BUG_ON(size <= 0 || size > EXT4_BLOCKS_PER_GROUP(ac->ac_sb));
/* now prepare goal request */
@@ -3589,6 +3589,7 @@ static void ext4_mb_put_pa(struct ext4_allocation_context *ac,
struct super_block *sb, struct ext4_prealloc_space *pa)
{
ext4_group_t grp;
+ ext4_fsblk_t grp_blk;
if (!atomic_dec_and_test(&pa->pa_count) || pa->pa_free != 0)
return;
@@ -3603,8 +3604,12 @@ static void ext4_mb_put_pa(struct ext4_allocation_context *ac,
pa->pa_deleted = 1;
spin_unlock(&pa->pa_lock);
- /* -1 is to protect from crossing allocation group */
- ext4_get_group_no_and_offset(sb, pa->pa_pstart - 1, &grp, NULL);
+ grp_blk = pa->pa_pstart;
+ /* If linear, pa_pstart may be in the next group when pa is used up */
+ if (pa->pa_linear)
+ grp_blk--;
+
+ ext4_get_group_no_and_offset(sb, grp_blk, &grp, NULL);
/*
* possible race:
diff --git a/fs/lockd/clntlock.c b/fs/lockd/clntlock.c
index 1f3b0fc0d351..aedc47a264c1 100644
--- a/fs/lockd/clntlock.c
+++ b/fs/lockd/clntlock.c
@@ -139,6 +139,55 @@ int nlmclnt_block(struct nlm_wait *block, struct nlm_rqst *req, long timeout)
return 0;
}
+#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
+static const struct in6_addr *nlmclnt_map_v4addr(const struct sockaddr *sap,
+ struct in6_addr *addr_mapped)
+{
+ const struct sockaddr_in *sin = (const struct sockaddr_in *)sap;
+
+ switch (sap->sa_family) {
+ case AF_INET6:
+ return &((const struct sockaddr_in6 *)sap)->sin6_addr;
+ case AF_INET:
+ ipv6_addr_set_v4mapped(sin->sin_addr.s_addr, addr_mapped);
+ return addr_mapped;
+ }
+
+ return NULL;
+}
+
+/*
+ * If lockd is using a PF_INET6 listener, all incoming requests appear
+ * to come from AF_INET6 remotes. The address of AF_INET remotes are
+ * mapped to AF_INET6 automatically by the network layer. In case the
+ * user passed an AF_INET server address at mount time, ensure both
+ * addresses are AF_INET6 before comparing them.
+ */
+static int nlmclnt_cmp_addr(const struct nlm_host *host,
+ const struct sockaddr *sap)
+{
+ const struct in6_addr *addr1;
+ const struct in6_addr *addr2;
+ struct in6_addr addr1_mapped;
+ struct in6_addr addr2_mapped;
+
+ addr1 = nlmclnt_map_v4addr(nlm_addr(host), &addr1_mapped);
+ if (likely(addr1 != NULL)) {
+ addr2 = nlmclnt_map_v4addr(sap, &addr2_mapped);
+ if (likely(addr2 != NULL))
+ return ipv6_addr_equal(addr1, addr2);
+ }
+
+ return 0;
+}
+#else /* !(CONFIG_IPV6 || CONFIG_IPV6_MODULE) */
+static int nlmclnt_cmp_addr(const struct nlm_host *host,
+ const struct sockaddr *sap)
+{
+ return nlm_cmp_addr(nlm_addr(host), sap);
+}
+#endif /* !(CONFIG_IPV6 || CONFIG_IPV6_MODULE) */
+
/*
* The server lockd has called us back to tell us the lock was granted
*/
@@ -166,7 +215,7 @@ __be32 nlmclnt_grant(const struct sockaddr *addr, const struct nlm_lock *lock)
*/
if (fl_blocked->fl_u.nfs_fl.owner->pid != lock->svid)
continue;
- if (!nlm_cmp_addr(nlm_addr(block->b_host), addr))
+ if (!nlmclnt_cmp_addr(block->b_host, addr))
continue;
if (nfs_compare_fh(NFS_FH(fl_blocked->fl_file->f_path.dentry->d_inode) ,fh) != 0)
continue;
diff --git a/fs/nfs/client.c b/fs/nfs/client.c
index 9b728f3565a1..574158ae2398 100644
--- a/fs/nfs/client.c
+++ b/fs/nfs/client.c
@@ -255,6 +255,32 @@ static int nfs_sockaddr_match_ipaddr(const struct sockaddr *sa1,
}
return 0;
}
+
+/*
+ * Test if two ip6 socket addresses refer to the same socket by
+ * comparing relevant fields. The padding bytes specifically, are not
+ * compared. sin6_flowinfo is not compared because it only affects QoS
+ * and sin6_scope_id is only compared if the address is "link local"
+ * because "link local" addresses need only be unique to a specific
+ * link. Conversely, ordinary unicast addresses might have different
+ * sin6_scope_id.
+ *
+ * The caller should ensure both socket addresses are AF_INET6.
+ */
+static int nfs_sockaddr_cmp_ip6(const struct sockaddr *sa1,
+ const struct sockaddr *sa2)
+{
+ const struct sockaddr_in6 *saddr1 = (const struct sockaddr_in6 *)sa1;
+ const struct sockaddr_in6 *saddr2 = (const struct sockaddr_in6 *)sa2;
+
+ if (!ipv6_addr_equal(&saddr1->sin6_addr,
+ &saddr1->sin6_addr))
+ return 0;
+ if (ipv6_addr_scope(&saddr1->sin6_addr) == IPV6_ADDR_SCOPE_LINKLOCAL &&
+ saddr1->sin6_scope_id != saddr2->sin6_scope_id)
+ return 0;
+ return saddr1->sin6_port == saddr2->sin6_port;
+}
#else
static int nfs_sockaddr_match_ipaddr4(const struct sockaddr_in *sa1,
const struct sockaddr_in *sa2)
@@ -270,9 +296,52 @@ static int nfs_sockaddr_match_ipaddr(const struct sockaddr *sa1,
return nfs_sockaddr_match_ipaddr4((const struct sockaddr_in *)sa1,
(const struct sockaddr_in *)sa2);
}
+
+static int nfs_sockaddr_cmp_ip6(const struct sockaddr * sa1,
+ const struct sockaddr * sa2)
+{
+ return 0;
+}
#endif
/*
+ * Test if two ip4 socket addresses refer to the same socket, by
+ * comparing relevant fields. The padding bytes specifically, are
+ * not compared.
+ *
+ * The caller should ensure both socket addresses are AF_INET.
+ */
+static int nfs_sockaddr_cmp_ip4(const struct sockaddr *sa1,
+ const struct sockaddr *sa2)
+{
+ const struct sockaddr_in *saddr1 = (const struct sockaddr_in *)sa1;
+ const struct sockaddr_in *saddr2 = (const struct sockaddr_in *)sa2;
+
+ if (saddr1->sin_addr.s_addr != saddr2->sin_addr.s_addr)
+ return 0;
+ return saddr1->sin_port == saddr2->sin_port;
+}
+
+/*
+ * Test if two socket addresses represent the same actual socket,
+ * by comparing (only) relevant fields.
+ */
+static int nfs_sockaddr_cmp(const struct sockaddr *sa1,
+ const struct sockaddr *sa2)
+{
+ if (sa1->sa_family != sa2->sa_family)
+ return 0;
+
+ switch (sa1->sa_family) {
+ case AF_INET:
+ return nfs_sockaddr_cmp_ip4(sa1, sa2);
+ case AF_INET6:
+ return nfs_sockaddr_cmp_ip6(sa1, sa2);
+ }
+ return 0;
+}
+
+/*
* Find a client by IP address and protocol version
* - returns NULL if no such client
*/
@@ -344,8 +413,10 @@ struct nfs_client *nfs_find_client_next(struct nfs_client *clp)
static struct nfs_client *nfs_match_client(const struct nfs_client_initdata *data)
{
struct nfs_client *clp;
+ const struct sockaddr *sap = data->addr;
list_for_each_entry(clp, &nfs_client_list, cl_share_link) {
+ const struct sockaddr *clap = (struct sockaddr *)&clp->cl_addr;
/* Don't match clients that failed to initialise properly */
if (clp->cl_cons_state < 0)
continue;
@@ -358,7 +429,7 @@ static struct nfs_client *nfs_match_client(const struct nfs_client_initdata *dat
continue;
/* Match the full socket address */
- if (memcmp(&clp->cl_addr, data->addr, sizeof(clp->cl_addr)) != 0)
+ if (!nfs_sockaddr_cmp(sap, clap))
continue;
atomic_inc(&clp->cl_count);
diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c
index e35c8199f82f..672368f865ca 100644
--- a/fs/nfs/dir.c
+++ b/fs/nfs/dir.c
@@ -1892,8 +1892,14 @@ static int nfs_do_access(struct inode *inode, struct rpc_cred *cred, int mask)
cache.cred = cred;
cache.jiffies = jiffies;
status = NFS_PROTO(inode)->access(inode, &cache);
- if (status != 0)
+ if (status != 0) {
+ if (status == -ESTALE) {
+ nfs_zap_caches(inode);
+ if (!S_ISDIR(inode->i_mode))
+ set_bit(NFS_INO_STALE, &NFS_I(inode)->flags);
+ }
return status;
+ }
nfs_access_add_cache(inode, &cache);
out:
if ((mask & ~cache.mask & (MAY_READ | MAY_WRITE | MAY_EXEC)) == 0)
diff --git a/fs/nfs/nfs3acl.c b/fs/nfs/nfs3acl.c
index cef62557c87d..6bbf0e6daad2 100644
--- a/fs/nfs/nfs3acl.c
+++ b/fs/nfs/nfs3acl.c
@@ -292,7 +292,7 @@ static int nfs3_proc_setacls(struct inode *inode, struct posix_acl *acl,
{
struct nfs_server *server = NFS_SERVER(inode);
struct nfs_fattr fattr;
- struct page *pages[NFSACL_MAXPAGES] = { };
+ struct page *pages[NFSACL_MAXPAGES];
struct nfs3_setaclargs args = {
.inode = inode,
.mask = NFS_ACL,
@@ -303,7 +303,7 @@ static int nfs3_proc_setacls(struct inode *inode, struct posix_acl *acl,
.rpc_argp = &args,
.rpc_resp = &fattr,
};
- int status, count;
+ int status;
status = -EOPNOTSUPP;
if (!nfs_server_capable(inode, NFS_CAP_ACLS))
@@ -319,6 +319,20 @@ static int nfs3_proc_setacls(struct inode *inode, struct posix_acl *acl,
if (S_ISDIR(inode->i_mode)) {
args.mask |= NFS_DFACL;
args.acl_default = dfacl;
+ args.len = nfsacl_size(acl, dfacl);
+ } else
+ args.len = nfsacl_size(acl, NULL);
+
+ if (args.len > NFS_ACL_INLINE_BUFSIZE) {
+ unsigned int npages = 1 + ((args.len - 1) >> PAGE_SHIFT);
+
+ status = -ENOMEM;
+ do {
+ args.pages[args.npages] = alloc_page(GFP_KERNEL);
+ if (args.pages[args.npages] == NULL)
+ goto out_freepages;
+ args.npages++;
+ } while (args.npages < npages);
}
dprintk("NFS call setacl\n");
@@ -329,10 +343,6 @@ static int nfs3_proc_setacls(struct inode *inode, struct posix_acl *acl,
nfs_zap_acl_cache(inode);
dprintk("NFS reply setacl: %d\n", status);
- /* pages may have been allocated at the xdr layer. */
- for (count = 0; count < NFSACL_MAXPAGES && args.pages[count]; count++)
- __free_page(args.pages[count]);
-
switch (status) {
case 0:
status = nfs_refresh_inode(inode, &fattr);
@@ -346,6 +356,11 @@ static int nfs3_proc_setacls(struct inode *inode, struct posix_acl *acl,
case -ENOTSUPP:
status = -EOPNOTSUPP;
}
+out_freepages:
+ while (args.npages != 0) {
+ args.npages--;
+ __free_page(args.pages[args.npages]);
+ }
out:
return status;
}
diff --git a/fs/nfs/nfs3xdr.c b/fs/nfs/nfs3xdr.c
index 11cdddec1432..6cdeacffde46 100644
--- a/fs/nfs/nfs3xdr.c
+++ b/fs/nfs/nfs3xdr.c
@@ -82,8 +82,10 @@
#define NFS3_commitres_sz (1+NFS3_wcc_data_sz+2)
#define ACL3_getaclargs_sz (NFS3_fh_sz+1)
-#define ACL3_setaclargs_sz (NFS3_fh_sz+1+2*(2+5*3))
-#define ACL3_getaclres_sz (1+NFS3_post_op_attr_sz+1+2*(2+5*3))
+#define ACL3_setaclargs_sz (NFS3_fh_sz+1+ \
+ XDR_QUADLEN(NFS_ACL_INLINE_BUFSIZE))
+#define ACL3_getaclres_sz (1+NFS3_post_op_attr_sz+1+ \
+ XDR_QUADLEN(NFS_ACL_INLINE_BUFSIZE))
#define ACL3_setaclres_sz (1+NFS3_post_op_attr_sz)
/*
@@ -703,28 +705,18 @@ nfs3_xdr_setaclargs(struct rpc_rqst *req, __be32 *p,
struct nfs3_setaclargs *args)
{
struct xdr_buf *buf = &req->rq_snd_buf;
- unsigned int base, len_in_head, len = nfsacl_size(
- (args->mask & NFS_ACL) ? args->acl_access : NULL,
- (args->mask & NFS_DFACL) ? args->acl_default : NULL);
- int count, err;
+ unsigned int base;
+ int err;
p = xdr_encode_fhandle(p, NFS_FH(args->inode));
*p++ = htonl(args->mask);
- base = (char *)p - (char *)buf->head->iov_base;
- /* put as much of the acls into head as possible. */
- len_in_head = min_t(unsigned int, buf->head->iov_len - base, len);
- len -= len_in_head;
- req->rq_slen = xdr_adjust_iovec(req->rq_svec, p + (len_in_head >> 2));
-
- for (count = 0; (count << PAGE_SHIFT) < len; count++) {
- args->pages[count] = alloc_page(GFP_KERNEL);
- if (!args->pages[count]) {
- while (count)
- __free_page(args->pages[--count]);
- return -ENOMEM;
- }
- }
- xdr_encode_pages(buf, args->pages, 0, len);
+ req->rq_slen = xdr_adjust_iovec(req->rq_svec, p);
+ base = req->rq_slen;
+
+ if (args->npages != 0)
+ xdr_encode_pages(buf, args->pages, 0, args->len);
+ else
+ req->rq_slen += args->len;
err = nfsacl_encode(buf, base, args->inode,
(args->mask & NFS_ACL) ?
diff --git a/fs/nfs/nfs4namespace.c b/fs/nfs/nfs4namespace.c
index 30befc39b3c6..2a2a0a7143ad 100644
--- a/fs/nfs/nfs4namespace.c
+++ b/fs/nfs/nfs4namespace.c
@@ -21,7 +21,9 @@
#define NFSDBG_FACILITY NFSDBG_VFS
/*
- * Check if fs_root is valid
+ * Convert the NFSv4 pathname components into a standard posix path.
+ *
+ * Note that the resulting string will be placed at the end of the buffer
*/
static inline char *nfs4_pathname_string(const struct nfs4_pathname *pathname,
char *buffer, ssize_t buflen)
@@ -99,21 +101,20 @@ static struct vfsmount *try_location(struct nfs_clone_mount *mountdata,
{
struct vfsmount *mnt = ERR_PTR(-ENOENT);
char *mnt_path;
- int page2len;
+ unsigned int maxbuflen;
unsigned int s;
mnt_path = nfs4_pathname_string(&location->rootpath, page2, PAGE_SIZE);
if (IS_ERR(mnt_path))
return mnt;
mountdata->mnt_path = mnt_path;
- page2 += strlen(mnt_path) + 1;
- page2len = PAGE_SIZE - strlen(mnt_path) - 1;
+ maxbuflen = mnt_path - 1 - page2;
for (s = 0; s < location->nservers; s++) {
const struct nfs4_string *buf = &location->servers[s];
struct sockaddr_storage addr;
- if (buf->len <= 0 || buf->len >= PAGE_SIZE)
+ if (buf->len <= 0 || buf->len >= maxbuflen)
continue;
mountdata->addr = (struct sockaddr *)&addr;
@@ -126,8 +127,8 @@ static struct vfsmount *try_location(struct nfs_clone_mount *mountdata,
continue;
nfs_set_port(mountdata->addr, NFS_PORT);
- strncpy(page2, buf->data, page2len);
- page2[page2len] = '\0';
+ memcpy(page2, buf->data, buf->len);
+ page2[buf->len] = '\0';
mountdata->hostname = page2;
snprintf(page, PAGE_SIZE, "%s:%s",
diff --git a/fs/nfsd/nfs4xdr.c b/fs/nfsd/nfs4xdr.c
index f65953be39c0..9250067943d8 100644
--- a/fs/nfsd/nfs4xdr.c
+++ b/fs/nfsd/nfs4xdr.c
@@ -2596,6 +2596,7 @@ static nfsd4_enc nfsd4_enc_ops[] = {
[OP_LOOKUPP] = (nfsd4_enc)nfsd4_encode_noop,
[OP_NVERIFY] = (nfsd4_enc)nfsd4_encode_noop,
[OP_OPEN] = (nfsd4_enc)nfsd4_encode_open,
+ [OP_OPENATTR] = (nfsd4_enc)nfsd4_encode_noop,
[OP_OPEN_CONFIRM] = (nfsd4_enc)nfsd4_encode_open_confirm,
[OP_OPEN_DOWNGRADE] = (nfsd4_enc)nfsd4_encode_open_downgrade,
[OP_PUTFH] = (nfsd4_enc)nfsd4_encode_noop,
diff --git a/fs/ocfs2/alloc.c b/fs/ocfs2/alloc.c
index 3a9e5deed74d..19e3a96aa02c 100644
--- a/fs/ocfs2/alloc.c
+++ b/fs/ocfs2/alloc.c
@@ -176,7 +176,8 @@ static int ocfs2_dinode_insert_check(struct inode *inode,
BUG_ON(OCFS2_I(inode)->ip_dyn_features & OCFS2_INLINE_DATA_FL);
mlog_bug_on_msg(!ocfs2_sparse_alloc(osb) &&
- (OCFS2_I(inode)->ip_clusters != rec->e_cpos),
+ (OCFS2_I(inode)->ip_clusters !=
+ le32_to_cpu(rec->e_cpos)),
"Device %s, asking for sparse allocation: inode %llu, "
"cpos %u, clusters %u\n",
osb->dev_str,
diff --git a/fs/ocfs2/aops.c b/fs/ocfs2/aops.c
index a067a6cffb01..8e1709a679b7 100644
--- a/fs/ocfs2/aops.c
+++ b/fs/ocfs2/aops.c
@@ -227,7 +227,7 @@ int ocfs2_read_inline_data(struct inode *inode, struct page *page,
size = i_size_read(inode);
if (size > PAGE_CACHE_SIZE ||
- size > ocfs2_max_inline_data(inode->i_sb)) {
+ size > ocfs2_max_inline_data_with_xattr(inode->i_sb, di)) {
ocfs2_error(inode->i_sb,
"Inode %llu has with inline data has bad size: %Lu",
(unsigned long long)OCFS2_I(inode)->ip_blkno,
@@ -1555,6 +1555,7 @@ static int ocfs2_try_to_write_inline_data(struct address_space *mapping,
int ret, written = 0;
loff_t end = pos + len;
struct ocfs2_inode_info *oi = OCFS2_I(inode);
+ struct ocfs2_dinode *di = NULL;
mlog(0, "Inode %llu, write of %u bytes at off %llu. features: 0x%x\n",
(unsigned long long)oi->ip_blkno, len, (unsigned long long)pos,
@@ -1587,7 +1588,9 @@ static int ocfs2_try_to_write_inline_data(struct address_space *mapping,
/*
* Check whether the write can fit.
*/
- if (mmap_page || end > ocfs2_max_inline_data(inode->i_sb))
+ di = (struct ocfs2_dinode *)wc->w_di_bh->b_data;
+ if (mmap_page ||
+ end > ocfs2_max_inline_data_with_xattr(inode->i_sb, di))
return 0;
do_inline_write:
diff --git a/fs/ocfs2/namei.c b/fs/ocfs2/namei.c
index 084aba86c3b2..4b11762f249e 100644
--- a/fs/ocfs2/namei.c
+++ b/fs/ocfs2/namei.c
@@ -532,7 +532,8 @@ static int ocfs2_mknod_locked(struct ocfs2_super *osb,
fe->i_dyn_features = cpu_to_le16(feat | OCFS2_INLINE_DATA_FL);
- fe->id2.i_data.id_count = cpu_to_le16(ocfs2_max_inline_data(osb->sb));
+ fe->id2.i_data.id_count = cpu_to_le16(
+ ocfs2_max_inline_data_with_xattr(osb->sb, fe));
} else {
fel = &fe->id2.i_list;
fel->l_tree_depth = 0;
diff --git a/fs/ocfs2/ocfs2_fs.h b/fs/ocfs2/ocfs2_fs.h
index c7ae45aaa36c..2332ef740f4f 100644
--- a/fs/ocfs2/ocfs2_fs.h
+++ b/fs/ocfs2/ocfs2_fs.h
@@ -1070,12 +1070,6 @@ static inline int ocfs2_fast_symlink_chars(struct super_block *sb)
offsetof(struct ocfs2_dinode, id2.i_symlink);
}
-static inline int ocfs2_max_inline_data(struct super_block *sb)
-{
- return sb->s_blocksize -
- offsetof(struct ocfs2_dinode, id2.i_data.id_data);
-}
-
static inline int ocfs2_max_inline_data_with_xattr(struct super_block *sb,
struct ocfs2_dinode *di)
{
diff --git a/fs/ocfs2/xattr.c b/fs/ocfs2/xattr.c
index 4ddd788add67..2563df89fc2a 100644
--- a/fs/ocfs2/xattr.c
+++ b/fs/ocfs2/xattr.c
@@ -547,8 +547,12 @@ int ocfs2_calc_xattr_init(struct inode *dir,
* when blocksize = 512, may reserve one more cluser for
* xattr bucket, otherwise reserve one metadata block
* for them is ok.
+ * If this is a new directory with inline data,
+ * we choose to reserve the entire inline area for
+ * directory contents and force an external xattr block.
*/
if (dir->i_sb->s_blocksize == OCFS2_MIN_BLOCKSIZE ||
+ (S_ISDIR(mode) && ocfs2_supports_inline_data(osb)) ||
(s_size + a_size) > OCFS2_XATTR_FREE_IN_IBODY) {
ret = ocfs2_reserve_new_metadata_blocks(osb, 1, xattr_ac);
if (ret) {
@@ -4791,19 +4795,33 @@ static int ocfs2_xattr_bucket_set_value_outside(struct inode *inode,
char *val,
int value_len)
{
- int offset;
+ int ret, offset, block_off;
struct ocfs2_xattr_value_root *xv;
struct ocfs2_xattr_entry *xe = xs->here;
+ struct ocfs2_xattr_header *xh = bucket_xh(xs->bucket);
+ void *base;
BUG_ON(!xs->base || !xe || ocfs2_xattr_is_local(xe));
- offset = le16_to_cpu(xe->xe_name_offset) +
- OCFS2_XATTR_SIZE(xe->xe_name_len);
+ ret = ocfs2_xattr_bucket_get_name_value(inode, xh,
+ xe - xh->xh_entries,
+ &block_off,
+ &offset);
+ if (ret) {
+ mlog_errno(ret);
+ goto out;
+ }
- xv = (struct ocfs2_xattr_value_root *)(xs->base + offset);
+ base = bucket_block(xs->bucket, block_off);
+ xv = (struct ocfs2_xattr_value_root *)(base + offset +
+ OCFS2_XATTR_SIZE(xe->xe_name_len));
- return __ocfs2_xattr_set_value_outside(inode, handle,
- xv, val, value_len);
+ ret = __ocfs2_xattr_set_value_outside(inode, handle,
+ xv, val, value_len);
+ if (ret)
+ mlog_errno(ret);
+out:
+ return ret;
}
static int ocfs2_rm_xattr_cluster(struct inode *inode,
diff --git a/fs/proc/base.c b/fs/proc/base.c
index 0c9de19a1633..beaa0ce3b82e 100644
--- a/fs/proc/base.c
+++ b/fs/proc/base.c
@@ -3066,7 +3066,6 @@ static int proc_task_readdir(struct file * filp, void * dirent, filldir_t filldi
int retval = -ENOENT;
ino_t ino;
int tid;
- unsigned long pos = filp->f_pos; /* avoiding "long long" filp->f_pos */
struct pid_namespace *ns;
task = get_proc_task(inode);
@@ -3083,18 +3082,18 @@ static int proc_task_readdir(struct file * filp, void * dirent, filldir_t filldi
goto out_no_task;
retval = 0;
- switch (pos) {
+ switch ((unsigned long)filp->f_pos) {
case 0:
ino = inode->i_ino;
- if (filldir(dirent, ".", 1, pos, ino, DT_DIR) < 0)
+ if (filldir(dirent, ".", 1, filp->f_pos, ino, DT_DIR) < 0)
goto out;
- pos++;
+ filp->f_pos++;
/* fall through */
case 1:
ino = parent_ino(dentry);
- if (filldir(dirent, "..", 2, pos, ino, DT_DIR) < 0)
+ if (filldir(dirent, "..", 2, filp->f_pos, ino, DT_DIR) < 0)
goto out;
- pos++;
+ filp->f_pos++;
/* fall through */
}
@@ -3104,9 +3103,9 @@ static int proc_task_readdir(struct file * filp, void * dirent, filldir_t filldi
ns = filp->f_dentry->d_sb->s_fs_info;
tid = (int)filp->f_version;
filp->f_version = 0;
- for (task = first_tid(leader, tid, pos - 2, ns);
+ for (task = first_tid(leader, tid, filp->f_pos - 2, ns);
task;
- task = next_tid(task), pos++) {
+ task = next_tid(task), filp->f_pos++) {
tid = task_pid_nr_ns(task, ns);
if (proc_task_fill_cache(filp, dirent, filldir, task, tid) < 0) {
/* returning this tgid failed, save it as the first
@@ -3117,7 +3116,6 @@ static int proc_task_readdir(struct file * filp, void * dirent, filldir_t filldi
}
}
out:
- filp->f_pos = pos;
put_task_struct(leader);
out_no_task:
return retval;
diff --git a/fs/ramfs/file-nommu.c b/fs/ramfs/file-nommu.c
index b9b567a28376..5d7c7ececa64 100644
--- a/fs/ramfs/file-nommu.c
+++ b/fs/ramfs/file-nommu.c
@@ -114,6 +114,9 @@ int ramfs_nommu_expand_for_mapping(struct inode *inode, size_t newsize)
if (!pagevec_add(&lru_pvec, page))
__pagevec_lru_add_file(&lru_pvec);
+ /* prevent the page from being discarded on memory pressure */
+ SetPageDirty(page);
+
unlock_page(page);
}
@@ -126,6 +129,7 @@ int ramfs_nommu_expand_for_mapping(struct inode *inode, size_t newsize)
return -EFBIG;
add_error:
+ pagevec_lru_add_file(&lru_pvec);
page_cache_release(pages + loop);
for (loop++; loop < npages; loop++)
__free_page(pages + loop);
Powered by cgit, Gruvboxed by Blaster4385.