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-rw-r--r--fs/btrfs/dev-replace.c14
-rw-r--r--fs/btrfs/ioctl.c18
-rw-r--r--fs/btrfs/volumes.c107
-rw-r--r--fs/btrfs/volumes.h6
-rw-r--r--fs/cramfs/inode.c2
-rw-r--r--fs/erofs/data.c4
-rw-r--r--fs/erofs/internal.h2
-rw-r--r--fs/erofs/super.c20
-rw-r--r--fs/ext4/ext4.h2
-rw-r--r--fs/ext4/fsmap.c9
-rw-r--r--fs/ext4/super.c52
-rw-r--r--fs/f2fs/f2fs.h1
-rw-r--r--fs/f2fs/super.c13
-rw-r--r--fs/jfs/jfs_logmgr.c33
-rw-r--r--fs/jfs/jfs_logmgr.h2
-rw-r--r--fs/jfs/jfs_mount.c3
-rw-r--r--fs/nfs/blocklayout/blocklayout.h2
-rw-r--r--fs/nfs/blocklayout/dev.c76
-rw-r--r--fs/ocfs2/cluster/heartbeat.c81
-rw-r--r--fs/reiserfs/journal.c56
-rw-r--r--fs/reiserfs/procfs.c2
-rw-r--r--fs/reiserfs/reiserfs.h11
-rw-r--r--fs/romfs/super.c2
-rw-r--r--fs/super.c66
-rw-r--r--fs/xfs/xfs_buf.c22
-rw-r--r--fs/xfs/xfs_buf.h3
-rw-r--r--fs/xfs/xfs_super.c42
27 files changed, 345 insertions, 306 deletions
diff --git a/fs/btrfs/dev-replace.c b/fs/btrfs/dev-replace.c
index fff22ed55c42..6b5b6cec13c4 100644
--- a/fs/btrfs/dev-replace.c
+++ b/fs/btrfs/dev-replace.c
@@ -247,6 +247,7 @@ static int btrfs_init_dev_replace_tgtdev(struct btrfs_fs_info *fs_info,
{
struct btrfs_fs_devices *fs_devices = fs_info->fs_devices;
struct btrfs_device *device;
+ struct bdev_handle *bdev_handle;
struct block_device *bdev;
u64 devid = BTRFS_DEV_REPLACE_DEVID;
int ret = 0;
@@ -257,12 +258,13 @@ static int btrfs_init_dev_replace_tgtdev(struct btrfs_fs_info *fs_info,
return -EINVAL;
}
- bdev = blkdev_get_by_path(device_path, BLK_OPEN_WRITE,
- fs_info->bdev_holder, NULL);
- if (IS_ERR(bdev)) {
+ bdev_handle = bdev_open_by_path(device_path, BLK_OPEN_WRITE,
+ fs_info->bdev_holder, NULL);
+ if (IS_ERR(bdev_handle)) {
btrfs_err(fs_info, "target device %s is invalid!", device_path);
- return PTR_ERR(bdev);
+ return PTR_ERR(bdev_handle);
}
+ bdev = bdev_handle->bdev;
if (!btrfs_check_device_zone_type(fs_info, bdev)) {
btrfs_err(fs_info,
@@ -313,9 +315,9 @@ static int btrfs_init_dev_replace_tgtdev(struct btrfs_fs_info *fs_info,
device->commit_bytes_used = device->bytes_used;
device->fs_info = fs_info;
device->bdev = bdev;
+ device->bdev_handle = bdev_handle;
set_bit(BTRFS_DEV_STATE_IN_FS_METADATA, &device->dev_state);
set_bit(BTRFS_DEV_STATE_REPLACE_TGT, &device->dev_state);
- device->holder = fs_info->bdev_holder;
device->dev_stats_valid = 1;
set_blocksize(device->bdev, BTRFS_BDEV_BLOCKSIZE);
device->fs_devices = fs_devices;
@@ -334,7 +336,7 @@ static int btrfs_init_dev_replace_tgtdev(struct btrfs_fs_info *fs_info,
return 0;
error:
- blkdev_put(bdev, fs_info->bdev_holder);
+ bdev_release(bdev_handle);
return ret;
}
diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c
index 8e7d03bc1b56..108edf8ffedf 100644
--- a/fs/btrfs/ioctl.c
+++ b/fs/btrfs/ioctl.c
@@ -2676,8 +2676,7 @@ static long btrfs_ioctl_rm_dev_v2(struct file *file, void __user *arg)
struct inode *inode = file_inode(file);
struct btrfs_fs_info *fs_info = btrfs_sb(inode->i_sb);
struct btrfs_ioctl_vol_args_v2 *vol_args;
- struct block_device *bdev = NULL;
- void *holder;
+ struct bdev_handle *bdev_handle = NULL;
int ret;
bool cancel = false;
@@ -2714,7 +2713,7 @@ static long btrfs_ioctl_rm_dev_v2(struct file *file, void __user *arg)
goto err_drop;
/* Exclusive operation is now claimed */
- ret = btrfs_rm_device(fs_info, &args, &bdev, &holder);
+ ret = btrfs_rm_device(fs_info, &args, &bdev_handle);
btrfs_exclop_finish(fs_info);
@@ -2728,8 +2727,8 @@ static long btrfs_ioctl_rm_dev_v2(struct file *file, void __user *arg)
}
err_drop:
mnt_drop_write_file(file);
- if (bdev)
- blkdev_put(bdev, holder);
+ if (bdev_handle)
+ bdev_release(bdev_handle);
out:
btrfs_put_dev_args_from_path(&args);
kfree(vol_args);
@@ -2742,8 +2741,7 @@ static long btrfs_ioctl_rm_dev(struct file *file, void __user *arg)
struct inode *inode = file_inode(file);
struct btrfs_fs_info *fs_info = btrfs_sb(inode->i_sb);
struct btrfs_ioctl_vol_args *vol_args;
- struct block_device *bdev = NULL;
- void *holder;
+ struct bdev_handle *bdev_handle = NULL;
int ret;
bool cancel = false;
@@ -2770,15 +2768,15 @@ static long btrfs_ioctl_rm_dev(struct file *file, void __user *arg)
ret = exclop_start_or_cancel_reloc(fs_info, BTRFS_EXCLOP_DEV_REMOVE,
cancel);
if (ret == 0) {
- ret = btrfs_rm_device(fs_info, &args, &bdev, &holder);
+ ret = btrfs_rm_device(fs_info, &args, &bdev_handle);
if (!ret)
btrfs_info(fs_info, "disk deleted %s", vol_args->name);
btrfs_exclop_finish(fs_info);
}
mnt_drop_write_file(file);
- if (bdev)
- blkdev_put(bdev, holder);
+ if (bdev_handle)
+ bdev_release(bdev_handle);
out:
btrfs_put_dev_args_from_path(&args);
kfree(vol_args);
diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index b9ef6f54635c..1f38affa4d9c 100644
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -511,37 +511,39 @@ static struct btrfs_fs_devices *find_fsid_with_metadata_uuid(
static int
btrfs_get_bdev_and_sb(const char *device_path, blk_mode_t flags, void *holder,
- int flush, struct block_device **bdev,
+ int flush, struct bdev_handle **bdev_handle,
struct btrfs_super_block **disk_super)
{
+ struct block_device *bdev;
int ret;
- *bdev = blkdev_get_by_path(device_path, flags, holder, NULL);
+ *bdev_handle = bdev_open_by_path(device_path, flags, holder, NULL);
- if (IS_ERR(*bdev)) {
- ret = PTR_ERR(*bdev);
+ if (IS_ERR(*bdev_handle)) {
+ ret = PTR_ERR(*bdev_handle);
goto error;
}
+ bdev = (*bdev_handle)->bdev;
if (flush)
- sync_blockdev(*bdev);
- ret = set_blocksize(*bdev, BTRFS_BDEV_BLOCKSIZE);
+ sync_blockdev(bdev);
+ ret = set_blocksize(bdev, BTRFS_BDEV_BLOCKSIZE);
if (ret) {
- blkdev_put(*bdev, holder);
+ bdev_release(*bdev_handle);
goto error;
}
- invalidate_bdev(*bdev);
- *disk_super = btrfs_read_dev_super(*bdev);
+ invalidate_bdev(bdev);
+ *disk_super = btrfs_read_dev_super(bdev);
if (IS_ERR(*disk_super)) {
ret = PTR_ERR(*disk_super);
- blkdev_put(*bdev, holder);
+ bdev_release(*bdev_handle);
goto error;
}
return 0;
error:
- *bdev = NULL;
+ *bdev_handle = NULL;
return ret;
}
@@ -613,7 +615,7 @@ static int btrfs_open_one_device(struct btrfs_fs_devices *fs_devices,
struct btrfs_device *device, blk_mode_t flags,
void *holder)
{
- struct block_device *bdev;
+ struct bdev_handle *bdev_handle;
struct btrfs_super_block *disk_super;
u64 devid;
int ret;
@@ -624,7 +626,7 @@ static int btrfs_open_one_device(struct btrfs_fs_devices *fs_devices,
return -EINVAL;
ret = btrfs_get_bdev_and_sb(device->name->str, flags, holder, 1,
- &bdev, &disk_super);
+ &bdev_handle, &disk_super);
if (ret)
return ret;
@@ -648,21 +650,21 @@ static int btrfs_open_one_device(struct btrfs_fs_devices *fs_devices,
clear_bit(BTRFS_DEV_STATE_WRITEABLE, &device->dev_state);
fs_devices->seeding = true;
} else {
- if (bdev_read_only(bdev))
+ if (bdev_read_only(bdev_handle->bdev))
clear_bit(BTRFS_DEV_STATE_WRITEABLE, &device->dev_state);
else
set_bit(BTRFS_DEV_STATE_WRITEABLE, &device->dev_state);
}
- if (!bdev_nonrot(bdev))
+ if (!bdev_nonrot(bdev_handle->bdev))
fs_devices->rotating = true;
- if (bdev_max_discard_sectors(bdev))
+ if (bdev_max_discard_sectors(bdev_handle->bdev))
fs_devices->discardable = true;
- device->bdev = bdev;
+ device->bdev_handle = bdev_handle;
+ device->bdev = bdev_handle->bdev;
clear_bit(BTRFS_DEV_STATE_IN_FS_METADATA, &device->dev_state);
- device->holder = holder;
fs_devices->open_devices++;
if (test_bit(BTRFS_DEV_STATE_WRITEABLE, &device->dev_state) &&
@@ -676,7 +678,7 @@ static int btrfs_open_one_device(struct btrfs_fs_devices *fs_devices,
error_free_page:
btrfs_release_disk_super(disk_super);
- blkdev_put(bdev, holder);
+ bdev_release(bdev_handle);
return -EINVAL;
}
@@ -1068,9 +1070,10 @@ static void __btrfs_free_extra_devids(struct btrfs_fs_devices *fs_devices,
if (device->devid == BTRFS_DEV_REPLACE_DEVID)
continue;
- if (device->bdev) {
- blkdev_put(device->bdev, device->holder);
+ if (device->bdev_handle) {
+ bdev_release(device->bdev_handle);
device->bdev = NULL;
+ device->bdev_handle = NULL;
fs_devices->open_devices--;
}
if (test_bit(BTRFS_DEV_STATE_WRITEABLE, &device->dev_state)) {
@@ -1115,7 +1118,7 @@ static void btrfs_close_bdev(struct btrfs_device *device)
invalidate_bdev(device->bdev);
}
- blkdev_put(device->bdev, device->holder);
+ bdev_release(device->bdev_handle);
}
static void btrfs_close_one_device(struct btrfs_device *device)
@@ -1363,7 +1366,7 @@ struct btrfs_device *btrfs_scan_one_device(const char *path, blk_mode_t flags)
struct btrfs_super_block *disk_super;
bool new_device_added = false;
struct btrfs_device *device = NULL;
- struct block_device *bdev;
+ struct bdev_handle *bdev_handle;
u64 bytenr, bytenr_orig;
int ret;
@@ -1386,18 +1389,19 @@ struct btrfs_device *btrfs_scan_one_device(const char *path, blk_mode_t flags)
* values temporarily, as the device paths of the fsid are the only
* required information for assembling the volume.
*/
- bdev = blkdev_get_by_path(path, flags, NULL, NULL);
- if (IS_ERR(bdev))
- return ERR_CAST(bdev);
+ bdev_handle = bdev_open_by_path(path, flags, NULL, NULL);
+ if (IS_ERR(bdev_handle))
+ return ERR_CAST(bdev_handle);
bytenr_orig = btrfs_sb_offset(0);
- ret = btrfs_sb_log_location_bdev(bdev, 0, READ, &bytenr);
+ ret = btrfs_sb_log_location_bdev(bdev_handle->bdev, 0, READ, &bytenr);
if (ret) {
device = ERR_PTR(ret);
goto error_bdev_put;
}
- disk_super = btrfs_read_disk_super(bdev, bytenr, bytenr_orig);
+ disk_super = btrfs_read_disk_super(bdev_handle->bdev, bytenr,
+ bytenr_orig);
if (IS_ERR(disk_super)) {
device = ERR_CAST(disk_super);
goto error_bdev_put;
@@ -1410,7 +1414,7 @@ struct btrfs_device *btrfs_scan_one_device(const char *path, blk_mode_t flags)
btrfs_release_disk_super(disk_super);
error_bdev_put:
- blkdev_put(bdev, NULL);
+ bdev_release(bdev_handle);
return device;
}
@@ -2087,7 +2091,7 @@ void btrfs_scratch_superblocks(struct btrfs_fs_info *fs_info,
int btrfs_rm_device(struct btrfs_fs_info *fs_info,
struct btrfs_dev_lookup_args *args,
- struct block_device **bdev, void **holder)
+ struct bdev_handle **bdev_handle)
{
struct btrfs_trans_handle *trans;
struct btrfs_device *device;
@@ -2196,7 +2200,7 @@ int btrfs_rm_device(struct btrfs_fs_info *fs_info,
btrfs_assign_next_active_device(device, NULL);
- if (device->bdev) {
+ if (device->bdev_handle) {
cur_devices->open_devices--;
/* remove sysfs entry */
btrfs_sysfs_remove_device(device);
@@ -2212,9 +2216,9 @@ int btrfs_rm_device(struct btrfs_fs_info *fs_info,
* free the device.
*
* We cannot call btrfs_close_bdev() here because we're holding the sb
- * write lock, and blkdev_put() will pull in the ->open_mutex on the
- * block device and it's dependencies. Instead just flush the device
- * and let the caller do the final blkdev_put.
+ * write lock, and bdev_release() will pull in the ->open_mutex on
+ * the block device and it's dependencies. Instead just flush the
+ * device and let the caller do the final bdev_release.
*/
if (test_bit(BTRFS_DEV_STATE_WRITEABLE, &device->dev_state)) {
btrfs_scratch_superblocks(fs_info, device->bdev,
@@ -2225,8 +2229,7 @@ int btrfs_rm_device(struct btrfs_fs_info *fs_info,
}
}
- *bdev = device->bdev;
- *holder = device->holder;
+ *bdev_handle = device->bdev_handle;
synchronize_rcu();
btrfs_free_device(device);
@@ -2363,7 +2366,7 @@ int btrfs_get_dev_args_from_path(struct btrfs_fs_info *fs_info,
const char *path)
{
struct btrfs_super_block *disk_super;
- struct block_device *bdev;
+ struct bdev_handle *bdev_handle;
int ret;
if (!path || !path[0])
@@ -2381,7 +2384,7 @@ int btrfs_get_dev_args_from_path(struct btrfs_fs_info *fs_info,
}
ret = btrfs_get_bdev_and_sb(path, BLK_OPEN_READ, NULL, 0,
- &bdev, &disk_super);
+ &bdev_handle, &disk_super);
if (ret) {
btrfs_put_dev_args_from_path(args);
return ret;
@@ -2394,7 +2397,7 @@ int btrfs_get_dev_args_from_path(struct btrfs_fs_info *fs_info,
else
memcpy(args->fsid, disk_super->fsid, BTRFS_FSID_SIZE);
btrfs_release_disk_super(disk_super);
- blkdev_put(bdev, NULL);
+ bdev_release(bdev_handle);
return 0;
}
@@ -2614,7 +2617,7 @@ int btrfs_init_new_device(struct btrfs_fs_info *fs_info, const char *device_path
struct btrfs_root *root = fs_info->dev_root;
struct btrfs_trans_handle *trans;
struct btrfs_device *device;
- struct block_device *bdev;
+ struct bdev_handle *bdev_handle;
struct super_block *sb = fs_info->sb;
struct btrfs_fs_devices *fs_devices = fs_info->fs_devices;
struct btrfs_fs_devices *seed_devices = NULL;
@@ -2627,12 +2630,12 @@ int btrfs_init_new_device(struct btrfs_fs_info *fs_info, const char *device_path
if (sb_rdonly(sb) && !fs_devices->seeding)
return -EROFS;
- bdev = blkdev_get_by_path(device_path, BLK_OPEN_WRITE,
- fs_info->bdev_holder, NULL);
- if (IS_ERR(bdev))
- return PTR_ERR(bdev);
+ bdev_handle = bdev_open_by_path(device_path, BLK_OPEN_WRITE,
+ fs_info->bdev_holder, NULL);
+ if (IS_ERR(bdev_handle))
+ return PTR_ERR(bdev_handle);
- if (!btrfs_check_device_zone_type(fs_info, bdev)) {
+ if (!btrfs_check_device_zone_type(fs_info, bdev_handle->bdev)) {
ret = -EINVAL;
goto error;
}
@@ -2644,11 +2647,11 @@ int btrfs_init_new_device(struct btrfs_fs_info *fs_info, const char *device_path
locked = true;
}
- sync_blockdev(bdev);
+ sync_blockdev(bdev_handle->bdev);
rcu_read_lock();
list_for_each_entry_rcu(device, &fs_devices->devices, dev_list) {
- if (device->bdev == bdev) {
+ if (device->bdev == bdev_handle->bdev) {
ret = -EEXIST;
rcu_read_unlock();
goto error;
@@ -2664,7 +2667,8 @@ int btrfs_init_new_device(struct btrfs_fs_info *fs_info, const char *device_path
}
device->fs_info = fs_info;
- device->bdev = bdev;
+ device->bdev_handle = bdev_handle;
+ device->bdev = bdev_handle->bdev;
ret = lookup_bdev(device_path, &device->devt);
if (ret)
goto error_free_device;
@@ -2685,12 +2689,11 @@ int btrfs_init_new_device(struct btrfs_fs_info *fs_info, const char *device_path
device->io_align = fs_info->sectorsize;
device->sector_size = fs_info->sectorsize;
device->total_bytes =
- round_down(bdev_nr_bytes(bdev), fs_info->sectorsize);
+ round_down(bdev_nr_bytes(device->bdev), fs_info->sectorsize);
device->disk_total_bytes = device->total_bytes;
device->commit_total_bytes = device->total_bytes;
set_bit(BTRFS_DEV_STATE_IN_FS_METADATA, &device->dev_state);
clear_bit(BTRFS_DEV_STATE_REPLACE_TGT, &device->dev_state);
- device->holder = fs_info->bdev_holder;
device->dev_stats_valid = 1;
set_blocksize(device->bdev, BTRFS_BDEV_BLOCKSIZE);
@@ -2726,7 +2729,7 @@ int btrfs_init_new_device(struct btrfs_fs_info *fs_info, const char *device_path
atomic64_add(device->total_bytes, &fs_info->free_chunk_space);
- if (!bdev_nonrot(bdev))
+ if (!bdev_nonrot(device->bdev))
fs_devices->rotating = true;
orig_super_total_bytes = btrfs_super_total_bytes(fs_info->super_copy);
@@ -2848,7 +2851,7 @@ error_free_zone:
error_free_device:
btrfs_free_device(device);
error:
- blkdev_put(bdev, fs_info->bdev_holder);
+ bdev_release(bdev_handle);
if (locked) {
mutex_unlock(&uuid_mutex);
up_write(&sb->s_umount);
diff --git a/fs/btrfs/volumes.h b/fs/btrfs/volumes.h
index 2128a032c3b7..1702cb7cac00 100644
--- a/fs/btrfs/volumes.h
+++ b/fs/btrfs/volumes.h
@@ -90,13 +90,11 @@ struct btrfs_device {
u64 generation;
+ struct bdev_handle *bdev_handle;
struct block_device *bdev;
struct btrfs_zoned_device_info *zone_info;
- /* block device holder for blkdev_get/put */
- void *holder;
-
/*
* Device's major-minor number. Must be set even if the device is not
* opened (bdev == NULL), unless the device is missing.
@@ -629,7 +627,7 @@ struct btrfs_device *btrfs_alloc_device(struct btrfs_fs_info *fs_info,
void btrfs_put_dev_args_from_path(struct btrfs_dev_lookup_args *args);
int btrfs_rm_device(struct btrfs_fs_info *fs_info,
struct btrfs_dev_lookup_args *args,
- struct block_device **bdev, void **holder);
+ struct bdev_handle **bdev_handle);
void __exit btrfs_cleanup_fs_uuids(void);
int btrfs_num_copies(struct btrfs_fs_info *fs_info, u64 logical, u64 len);
int btrfs_grow_device(struct btrfs_trans_handle *trans,
diff --git a/fs/cramfs/inode.c b/fs/cramfs/inode.c
index 5ee7d7bbb361..2fbf97077ce9 100644
--- a/fs/cramfs/inode.c
+++ b/fs/cramfs/inode.c
@@ -495,7 +495,7 @@ static void cramfs_kill_sb(struct super_block *sb)
sb->s_mtd = NULL;
} else if (IS_ENABLED(CONFIG_CRAMFS_BLOCKDEV) && sb->s_bdev) {
sync_blockdev(sb->s_bdev);
- blkdev_put(sb->s_bdev, sb);
+ bdev_release(sb->s_bdev_handle);
}
kfree(sbi);
}
diff --git a/fs/erofs/data.c b/fs/erofs/data.c
index 0c2c99c58b5e..f6a0a1748521 100644
--- a/fs/erofs/data.c
+++ b/fs/erofs/data.c
@@ -222,7 +222,7 @@ int erofs_map_dev(struct super_block *sb, struct erofs_map_dev *map)
up_read(&devs->rwsem);
return 0;
}
- map->m_bdev = dif->bdev;
+ map->m_bdev = dif->bdev_handle->bdev;
map->m_daxdev = dif->dax_dev;
map->m_dax_part_off = dif->dax_part_off;
map->m_fscache = dif->fscache;
@@ -240,7 +240,7 @@ int erofs_map_dev(struct super_block *sb, struct erofs_map_dev *map)
if (map->m_pa >= startoff &&
map->m_pa < startoff + length) {
map->m_pa -= startoff;
- map->m_bdev = dif->bdev;
+ map->m_bdev = dif->bdev_handle->bdev;
map->m_daxdev = dif->dax_dev;
map->m_dax_part_off = dif->dax_part_off;
map->m_fscache = dif->fscache;
diff --git a/fs/erofs/internal.h b/fs/erofs/internal.h
index 4ff88d0dd980..cf04e21bfda2 100644
--- a/fs/erofs/internal.h
+++ b/fs/erofs/internal.h
@@ -47,7 +47,7 @@ typedef u32 erofs_blk_t;
struct erofs_device_info {
char *path;
struct erofs_fscache *fscache;
- struct block_device *bdev;
+ struct bdev_handle *bdev_handle;
struct dax_device *dax_dev;
u64 dax_part_off;
diff --git a/fs/erofs/super.c b/fs/erofs/super.c
index 3700af9ee173..6fd04781fec5 100644
--- a/fs/erofs/super.c
+++ b/fs/erofs/super.c
@@ -227,7 +227,7 @@ static int erofs_init_device(struct erofs_buf *buf, struct super_block *sb,
struct erofs_sb_info *sbi = EROFS_SB(sb);
struct erofs_fscache *fscache;
struct erofs_deviceslot *dis;
- struct block_device *bdev;
+ struct bdev_handle *bdev_handle;
void *ptr;
ptr = erofs_read_metabuf(buf, sb, erofs_blknr(sb, *pos), EROFS_KMAP);
@@ -251,13 +251,13 @@ static int erofs_init_device(struct erofs_buf *buf, struct super_block *sb,
return PTR_ERR(fscache);
dif->fscache = fscache;
} else if (!sbi->devs->flatdev) {
- bdev = blkdev_get_by_path(dif->path, BLK_OPEN_READ, sb->s_type,
- NULL);
- if (IS_ERR(bdev))
- return PTR_ERR(bdev);
- dif->bdev = bdev;
- dif->dax_dev = fs_dax_get_by_bdev(bdev, &dif->dax_part_off,
- NULL, NULL);
+ bdev_handle = bdev_open_by_path(dif->path, BLK_OPEN_READ,
+ sb->s_type, NULL);
+ if (IS_ERR(bdev_handle))
+ return PTR_ERR(bdev_handle);
+ dif->bdev_handle = bdev_handle;
+ dif->dax_dev = fs_dax_get_by_bdev(bdev_handle->bdev,
+ &dif->dax_part_off, NULL, NULL);
}
dif->blocks = le32_to_cpu(dis->blocks);
@@ -806,8 +806,8 @@ static int erofs_release_device_info(int id, void *ptr, void *data)
struct erofs_device_info *dif = ptr;
fs_put_dax(dif->dax_dev, NULL);
- if (dif->bdev)
- blkdev_put(dif->bdev, &erofs_fs_type);
+ if (dif->bdev_handle)
+ bdev_release(dif->bdev_handle);
erofs_fscache_unregister_cookie(dif->fscache);
dif->fscache = NULL;
kfree(dif->path);
diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h
index 9418359b1d9d..2b3218b49bca 100644
--- a/fs/ext4/ext4.h
+++ b/fs/ext4/ext4.h
@@ -1537,7 +1537,7 @@ struct ext4_sb_info {
unsigned long s_commit_interval;
u32 s_max_batch_time;
u32 s_min_batch_time;
- struct block_device *s_journal_bdev;
+ struct bdev_handle *s_journal_bdev_handle;
#ifdef CONFIG_QUOTA
/* Names of quota files with journalled quota */
char __rcu *s_qf_names[EXT4_MAXQUOTAS];
diff --git a/fs/ext4/fsmap.c b/fs/ext4/fsmap.c
index cdf9bfe10137..11e6f33677a2 100644
--- a/fs/ext4/fsmap.c
+++ b/fs/ext4/fsmap.c
@@ -576,8 +576,9 @@ static bool ext4_getfsmap_is_valid_device(struct super_block *sb,
if (fm->fmr_device == 0 || fm->fmr_device == UINT_MAX ||
fm->fmr_device == new_encode_dev(sb->s_bdev->bd_dev))
return true;
- if (EXT4_SB(sb)->s_journal_bdev &&
- fm->fmr_device == new_encode_dev(EXT4_SB(sb)->s_journal_bdev->bd_dev))
+ if (EXT4_SB(sb)->s_journal_bdev_handle &&
+ fm->fmr_device ==
+ new_encode_dev(EXT4_SB(sb)->s_journal_bdev_handle->bdev->bd_dev))
return true;
return false;
}
@@ -647,9 +648,9 @@ int ext4_getfsmap(struct super_block *sb, struct ext4_fsmap_head *head,
memset(handlers, 0, sizeof(handlers));
handlers[0].gfd_dev = new_encode_dev(sb->s_bdev->bd_dev);
handlers[0].gfd_fn = ext4_getfsmap_datadev;
- if (EXT4_SB(sb)->s_journal_bdev) {
+ if (EXT4_SB(sb)->s_journal_bdev_handle) {
handlers[1].gfd_dev = new_encode_dev(
- EXT4_SB(sb)->s_journal_bdev->bd_dev);
+ EXT4_SB(sb)->s_journal_bdev_handle->bdev->bd_dev);
handlers[1].gfd_fn = ext4_getfsmap_logdev;
}
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index dbebd8b3127e..d43f8324242a 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -1351,14 +1351,14 @@ static void ext4_put_super(struct super_block *sb)
sync_blockdev(sb->s_bdev);
invalidate_bdev(sb->s_bdev);
- if (sbi->s_journal_bdev) {
+ if (sbi->s_journal_bdev_handle) {
/*
* Invalidate the journal device's buffers. We don't want them
* floating about in memory - the physical journal device may
* hotswapped, and it breaks the `ro-after' testing code.
*/
- sync_blockdev(sbi->s_journal_bdev);
- invalidate_bdev(sbi->s_journal_bdev);
+ sync_blockdev(sbi->s_journal_bdev_handle->bdev);
+ invalidate_bdev(sbi->s_journal_bdev_handle->bdev);
}
ext4_xattr_destroy_cache(sbi->s_ea_inode_cache);
@@ -4233,7 +4233,7 @@ int ext4_calculate_overhead(struct super_block *sb)
* Add the internal journal blocks whether the journal has been
* loaded or not
*/
- if (sbi->s_journal && !sbi->s_journal_bdev)
+ if (sbi->s_journal && !sbi->s_journal_bdev_handle)
overhead += EXT4_NUM_B2C(sbi, sbi->s_journal->j_total_len);
else if (ext4_has_feature_journal(sb) && !sbi->s_journal && j_inum) {
/* j_inum for internal journal is non-zero */
@@ -5670,9 +5670,9 @@ failed_mount:
#endif
fscrypt_free_dummy_policy(&sbi->s_dummy_enc_policy);
brelse(sbi->s_sbh);
- if (sbi->s_journal_bdev) {
- invalidate_bdev(sbi->s_journal_bdev);
- blkdev_put(sbi->s_journal_bdev, sb);
+ if (sbi->s_journal_bdev_handle) {
+ invalidate_bdev(sbi->s_journal_bdev_handle->bdev);
+ bdev_release(sbi->s_journal_bdev_handle);
}
out_fail:
invalidate_bdev(sb->s_bdev);
@@ -5842,12 +5842,13 @@ static journal_t *ext4_open_inode_journal(struct super_block *sb,
return journal;
}
-static struct block_device *ext4_get_journal_blkdev(struct super_block *sb,
+static struct bdev_handle *ext4_get_journal_blkdev(struct super_block *sb,
dev_t j_dev, ext4_fsblk_t *j_start,
ext4_fsblk_t *j_len)
{
struct buffer_head *bh;
struct block_device *bdev;
+ struct bdev_handle *bdev_handle;
int hblock, blocksize;
ext4_fsblk_t sb_block;
unsigned long offset;
@@ -5856,16 +5857,17 @@ static struct block_device *ext4_get_journal_blkdev(struct super_block *sb,
/* see get_tree_bdev why this is needed and safe */
up_write(&sb->s_umount);
- bdev = blkdev_get_by_dev(j_dev, BLK_OPEN_READ | BLK_OPEN_WRITE, sb,
- &fs_holder_ops);
+ bdev_handle = bdev_open_by_dev(j_dev, BLK_OPEN_READ | BLK_OPEN_WRITE,
+ sb, &fs_holder_ops);
down_write(&sb->s_umount);
- if (IS_ERR(bdev)) {
+ if (IS_ERR(bdev_handle)) {
ext4_msg(sb, KERN_ERR,
"failed to open journal device unknown-block(%u,%u) %ld",
- MAJOR(j_dev), MINOR(j_dev), PTR_ERR(bdev));
- return ERR_CAST(bdev);
+ MAJOR(j_dev), MINOR(j_dev), PTR_ERR(bdev_handle));
+ return bdev_handle;
}
+ bdev = bdev_handle->bdev;
blocksize = sb->s_blocksize;
hblock = bdev_logical_block_size(bdev);
if (blocksize < hblock) {
@@ -5912,12 +5914,12 @@ static struct block_device *ext4_get_journal_blkdev(struct super_block *sb,
*j_start = sb_block + 1;
*j_len = ext4_blocks_count(es);
brelse(bh);
- return bdev;
+ return bdev_handle;
out_bh:
brelse(bh);
out_bdev:
- blkdev_put(bdev, sb);
+ bdev_release(bdev_handle);
return ERR_PTR(errno);
}
@@ -5927,14 +5929,14 @@ static journal_t *ext4_open_dev_journal(struct super_block *sb,
journal_t *journal;
ext4_fsblk_t j_start;
ext4_fsblk_t j_len;
- struct block_device *journal_bdev;
+ struct bdev_handle *bdev_handle;
int errno = 0;
- journal_bdev = ext4_get_journal_blkdev(sb, j_dev, &j_start, &j_len);
- if (IS_ERR(journal_bdev))
- return ERR_CAST(journal_bdev);
+ bdev_handle = ext4_get_journal_blkdev(sb, j_dev, &j_start, &j_len);
+ if (IS_ERR(bdev_handle))
+ return ERR_CAST(bdev_handle);
- journal = jbd2_journal_init_dev(journal_bdev, sb->s_bdev, j_start,
+ journal = jbd2_journal_init_dev(bdev_handle->bdev, sb->s_bdev, j_start,
j_len, sb->s_blocksize);
if (IS_ERR(journal)) {
ext4_msg(sb, KERN_ERR, "failed to create device journal");
@@ -5949,14 +5951,14 @@ static journal_t *ext4_open_dev_journal(struct super_block *sb,
goto out_journal;
}
journal->j_private = sb;
- EXT4_SB(sb)->s_journal_bdev = journal_bdev;
+ EXT4_SB(sb)->s_journal_bdev_handle = bdev_handle;
ext4_init_journal_params(sb, journal);
return journal;
out_journal:
jbd2_journal_destroy(journal);
out_bdev:
- blkdev_put(journal_bdev, sb);
+ bdev_release(bdev_handle);
return ERR_PTR(errno);
}
@@ -7300,12 +7302,12 @@ static inline int ext3_feature_set_ok(struct super_block *sb)
static void ext4_kill_sb(struct super_block *sb)
{
struct ext4_sb_info *sbi = EXT4_SB(sb);
- struct block_device *journal_bdev = sbi ? sbi->s_journal_bdev : NULL;
+ struct bdev_handle *handle = sbi ? sbi->s_journal_bdev_handle : NULL;
kill_block_super(sb);
- if (journal_bdev)
- blkdev_put(journal_bdev, sb);
+ if (handle)
+ bdev_release(handle);
}
static struct file_system_type ext4_fs_type = {
diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index 6d688e42d89c..3878288122ee 100644
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -1234,6 +1234,7 @@ struct f2fs_bio_info {
#define FDEV(i) (sbi->devs[i])
#define RDEV(i) (raw_super->devs[i])
struct f2fs_dev_info {
+ struct bdev_handle *bdev_handle;
struct block_device *bdev;
char path[MAX_PATH_LEN];
unsigned int total_segments;
diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
index a8c8232852bb..027c3ee03985 100644
--- a/fs/f2fs/super.c
+++ b/fs/f2fs/super.c
@@ -1562,7 +1562,7 @@ static void destroy_device_list(struct f2fs_sb_info *sbi)
for (i = 0; i < sbi->s_ndevs; i++) {
if (i > 0)
- blkdev_put(FDEV(i).bdev, sbi->sb);
+ bdev_release(FDEV(i).bdev_handle);
#ifdef CONFIG_BLK_DEV_ZONED
kvfree(FDEV(i).blkz_seq);
#endif
@@ -4198,7 +4198,7 @@ static int f2fs_scan_devices(struct f2fs_sb_info *sbi)
for (i = 0; i < max_devices; i++) {
if (i == 0)
- FDEV(0).bdev = sbi->sb->s_bdev;
+ FDEV(0).bdev_handle = sbi->sb->s_bdev_handle;
else if (!RDEV(i).path[0])
break;
@@ -4218,13 +4218,14 @@ static int f2fs_scan_devices(struct f2fs_sb_info *sbi)
FDEV(i).end_blk = FDEV(i).start_blk +
(FDEV(i).total_segments <<
sbi->log_blocks_per_seg) - 1;
- FDEV(i).bdev = blkdev_get_by_path(FDEV(i).path,
- mode, sbi->sb, NULL);
+ FDEV(i).bdev_handle = bdev_open_by_path(
+ FDEV(i).path, mode, sbi->sb, NULL);
}
}
- if (IS_ERR(FDEV(i).bdev))
- return PTR_ERR(FDEV(i).bdev);
+ if (IS_ERR(FDEV(i).bdev_handle))
+ return PTR_ERR(FDEV(i).bdev_handle);
+ FDEV(i).bdev = FDEV(i).bdev_handle->bdev;
/* to release errored devices */
sbi->s_ndevs = i + 1;
diff --git a/fs/jfs/jfs_logmgr.c b/fs/jfs/jfs_logmgr.c
index e855b8fde76c..cb6d1fda66a7 100644
--- a/fs/jfs/jfs_logmgr.c
+++ b/fs/jfs/jfs_logmgr.c
@@ -1058,7 +1058,7 @@ void jfs_syncpt(struct jfs_log *log, int hard_sync)
int lmLogOpen(struct super_block *sb)
{
int rc;
- struct block_device *bdev;
+ struct bdev_handle *bdev_handle;
struct jfs_log *log;
struct jfs_sb_info *sbi = JFS_SBI(sb);
@@ -1070,7 +1070,7 @@ int lmLogOpen(struct super_block *sb)
mutex_lock(&jfs_log_mutex);
list_for_each_entry(log, &jfs_external_logs, journal_list) {
- if (log->bdev->bd_dev == sbi->logdev) {
+ if (log->bdev_handle->bdev->bd_dev == sbi->logdev) {
if (!uuid_equal(&log->uuid, &sbi->loguuid)) {
jfs_warn("wrong uuid on JFS journal");
mutex_unlock(&jfs_log_mutex);
@@ -1100,14 +1100,14 @@ int lmLogOpen(struct super_block *sb)
* file systems to log may have n-to-1 relationship;
*/
- bdev = blkdev_get_by_dev(sbi->logdev, BLK_OPEN_READ | BLK_OPEN_WRITE,
- log, NULL);
- if (IS_ERR(bdev)) {
- rc = PTR_ERR(bdev);
+ bdev_handle = bdev_open_by_dev(sbi->logdev,
+ BLK_OPEN_READ | BLK_OPEN_WRITE, log, NULL);
+ if (IS_ERR(bdev_handle)) {
+ rc = PTR_ERR(bdev_handle);
goto free;
}
- log->bdev = bdev;
+ log->bdev_handle = bdev_handle;
uuid_copy(&log->uuid, &sbi->loguuid);
/*
@@ -1141,7 +1141,7 @@ journal_found:
lbmLogShutdown(log);
close: /* close external log device */
- blkdev_put(bdev, log);
+ bdev_release(bdev_handle);
free: /* free log descriptor */
mutex_unlock(&jfs_log_mutex);
@@ -1162,7 +1162,7 @@ static int open_inline_log(struct super_block *sb)
init_waitqueue_head(&log->syncwait);
set_bit(log_INLINELOG, &log->flag);
- log->bdev = sb->s_bdev;
+ log->bdev_handle = sb->s_bdev_handle;
log->base = addressPXD(&JFS_SBI(sb)->logpxd);
log->size = lengthPXD(&JFS_SBI(sb)->logpxd) >>
(L2LOGPSIZE - sb->s_blocksize_bits);
@@ -1436,7 +1436,7 @@ int lmLogClose(struct super_block *sb)
{
struct jfs_sb_info *sbi = JFS_SBI(sb);
struct jfs_log *log = sbi->log;
- struct block_device *bdev;
+ struct bdev_handle *bdev_handle;
int rc = 0;
jfs_info("lmLogClose: log:0x%p", log);
@@ -1482,10 +1482,10 @@ int lmLogClose(struct super_block *sb)
* external log as separate logical volume
*/
list_del(&log->journal_list);
- bdev = log->bdev;
+ bdev_handle = log->bdev_handle;
rc = lmLogShutdown(log);
- blkdev_put(bdev, log);
+ bdev_release(bdev_handle);
kfree(log);
@@ -1972,7 +1972,7 @@ static int lbmRead(struct jfs_log * log, int pn, struct lbuf ** bpp)
bp->l_flag |= lbmREAD;
- bio = bio_alloc(log->bdev, 1, REQ_OP_READ, GFP_NOFS);
+ bio = bio_alloc(log->bdev_handle->bdev, 1, REQ_OP_READ, GFP_NOFS);
bio->bi_iter.bi_sector = bp->l_blkno << (log->l2bsize - 9);
__bio_add_page(bio, bp->l_page, LOGPSIZE, bp->l_offset);
BUG_ON(bio->bi_iter.bi_size != LOGPSIZE);
@@ -2110,10 +2110,15 @@ static void lbmStartIO(struct lbuf * bp)
{
struct bio *bio;
struct jfs_log *log = bp->l_log;
+ struct block_device *bdev = NULL;
jfs_info("lbmStartIO");
- bio = bio_alloc(log->bdev, 1, REQ_OP_WRITE | REQ_SYNC, GFP_NOFS);
+ if (!log->no_integrity)
+ bdev = log->bdev_handle->bdev;
+
+ bio = bio_alloc(bdev, 1, REQ_OP_WRITE | REQ_SYNC,
+ GFP_NOFS);
bio->bi_iter.bi_sector = bp->l_blkno << (log->l2bsize - 9);
__bio_add_page(bio, bp->l_page, LOGPSIZE, bp->l_offset);
BUG_ON(bio->bi_iter.bi_size != LOGPSIZE);
diff --git a/fs/jfs/jfs_logmgr.h b/fs/jfs/jfs_logmgr.h
index 805877ce5020..84aa2d253907 100644
--- a/fs/jfs/jfs_logmgr.h
+++ b/fs/jfs/jfs_logmgr.h
@@ -356,7 +356,7 @@ struct jfs_log {
* before writing syncpt.
*/
struct list_head journal_list; /* Global list */
- struct block_device *bdev; /* 4: log lv pointer */
+ struct bdev_handle *bdev_handle; /* 4: log lv pointer */
int serial; /* 4: log mount serial number */
s64 base; /* @8: log extent address (inline log ) */
diff --git a/fs/jfs/jfs_mount.c b/fs/jfs/jfs_mount.c
index b83aae56a1f2..415eb65a36ff 100644
--- a/fs/jfs/jfs_mount.c
+++ b/fs/jfs/jfs_mount.c
@@ -430,7 +430,8 @@ int updateSuper(struct super_block *sb, uint state)
if (state == FM_MOUNT) {
/* record log's dev_t and mount serial number */
- j_sb->s_logdev = cpu_to_le32(new_encode_dev(sbi->log->bdev->bd_dev));
+ j_sb->s_logdev = cpu_to_le32(
+ new_encode_dev(sbi->log->bdev_handle->bdev->bd_dev));
j_sb->s_logserial = cpu_to_le32(sbi->log->serial);
} else if (state == FM_CLEAN) {
/*
diff --git a/fs/nfs/blocklayout/blocklayout.h b/fs/nfs/blocklayout/blocklayout.h
index 716bc75e9ed2..b4294a8aa2d4 100644
--- a/fs/nfs/blocklayout/blocklayout.h
+++ b/fs/nfs/blocklayout/blocklayout.h
@@ -108,7 +108,7 @@ struct pnfs_block_dev {
struct pnfs_block_dev *children;
u64 chunk_size;
- struct block_device *bdev;
+ struct bdev_handle *bdev_handle;
u64 disk_offset;
u64 pr_key;
diff --git a/fs/nfs/blocklayout/dev.c b/fs/nfs/blocklayout/dev.c
index 65cbb5607a5f..f318a05a80e1 100644
--- a/fs/nfs/blocklayout/dev.c
+++ b/fs/nfs/blocklayout/dev.c
@@ -25,17 +25,17 @@ bl_free_device(struct pnfs_block_dev *dev)
} else {
if (dev->pr_registered) {
const struct pr_ops *ops =
- dev->bdev->bd_disk->fops->pr_ops;
+ dev->bdev_handle->bdev->bd_disk->fops->pr_ops;
int error;
- error = ops->pr_register(dev->bdev, dev->pr_key, 0,
- false);
+ error = ops->pr_register(dev->bdev_handle->bdev,
+ dev->pr_key, 0, false);
if (error)
pr_err("failed to unregister PR key.\n");
}
- if (dev->bdev)
- blkdev_put(dev->bdev, NULL);
+ if (dev->bdev_handle)
+ bdev_release(dev->bdev_handle);
}
}
@@ -169,7 +169,7 @@ static bool bl_map_simple(struct pnfs_block_dev *dev, u64 offset,
map->start = dev->start;
map->len = dev->len;
map->disk_offset = dev->disk_offset;
- map->bdev = dev->bdev;
+ map->bdev = dev->bdev_handle->bdev;
return true;
}
@@ -236,28 +236,26 @@ bl_parse_simple(struct nfs_server *server, struct pnfs_block_dev *d,
struct pnfs_block_volume *volumes, int idx, gfp_t gfp_mask)
{
struct pnfs_block_volume *v = &volumes[idx];
- struct block_device *bdev;
+ struct bdev_handle *bdev_handle;
dev_t dev;
dev = bl_resolve_deviceid(server, v, gfp_mask);
if (!dev)
return -EIO;
- bdev = blkdev_get_by_dev(dev, BLK_OPEN_READ | BLK_OPEN_WRITE, NULL,
- NULL);
- if (IS_ERR(bdev)) {
+ bdev_handle = bdev_open_by_dev(dev, BLK_OPEN_READ | BLK_OPEN_WRITE,
+ NULL, NULL);
+ if (IS_ERR(bdev_handle)) {
printk(KERN_WARNING "pNFS: failed to open device %d:%d (%ld)\n",
- MAJOR(dev), MINOR(dev), PTR_ERR(bdev));
- return PTR_ERR(bdev);
+ MAJOR(dev), MINOR(dev), PTR_ERR(bdev_handle));
+ return PTR_ERR(bdev_handle);
}
- d->bdev = bdev;
-
-
- d->len = bdev_nr_bytes(d->bdev);
+ d->bdev_handle = bdev_handle;
+ d->len = bdev_nr_bytes(bdev_handle->bdev);
d->map = bl_map_simple;
printk(KERN_INFO "pNFS: using block device %s\n",
- d->bdev->bd_disk->disk_name);
+ bdev_handle->bdev->bd_disk->disk_name);
return 0;
}
@@ -302,10 +300,10 @@ bl_validate_designator(struct pnfs_block_volume *v)
}
}
-static struct block_device *
+static struct bdev_handle *
bl_open_path(struct pnfs_block_volume *v, const char *prefix)
{
- struct block_device *bdev;
+ struct bdev_handle *bdev_handle;
const char *devname;
devname = kasprintf(GFP_KERNEL, "/dev/disk/by-id/%s%*phN",
@@ -313,15 +311,15 @@ bl_open_path(struct pnfs_block_volume *v, const char *prefix)
if (!devname)
return ERR_PTR(-ENOMEM);
- bdev = blkdev_get_by_path(devname, BLK_OPEN_READ | BLK_OPEN_WRITE, NULL,
- NULL);
- if (IS_ERR(bdev)) {
+ bdev_handle = bdev_open_by_path(devname, BLK_OPEN_READ | BLK_OPEN_WRITE,
+ NULL, NULL);
+ if (IS_ERR(bdev_handle)) {
pr_warn("pNFS: failed to open device %s (%ld)\n",
- devname, PTR_ERR(bdev));
+ devname, PTR_ERR(bdev_handle));
}
kfree(devname);
- return bdev;
+ return bdev_handle;
}
static int
@@ -329,7 +327,7 @@ bl_parse_scsi(struct nfs_server *server, struct pnfs_block_dev *d,
struct pnfs_block_volume *volumes, int idx, gfp_t gfp_mask)
{
struct pnfs_block_volume *v = &volumes[idx];
- struct block_device *bdev;
+ struct bdev_handle *bdev_handle;
const struct pr_ops *ops;
int error;
@@ -342,32 +340,32 @@ bl_parse_scsi(struct nfs_server *server, struct pnfs_block_dev *d,
* On other distributions like Debian, the default SCSI by-id path will
* point to the dm-multipath device if one exists.
*/
- bdev = bl_open_path(v, "dm-uuid-mpath-0x");
- if (IS_ERR(bdev))
- bdev = bl_open_path(v, "wwn-0x");
- if (IS_ERR(bdev))
- return PTR_ERR(bdev);
- d->bdev = bdev;
-
- d->len = bdev_nr_bytes(d->bdev);
+ bdev_handle = bl_open_path(v, "dm-uuid-mpath-0x");
+ if (IS_ERR(bdev_handle))
+ bdev_handle = bl_open_path(v, "wwn-0x");
+ if (IS_ERR(bdev_handle))
+ return PTR_ERR(bdev_handle);
+ d->bdev_handle = bdev_handle;
+
+ d->len = bdev_nr_bytes(d->bdev_handle->bdev);
d->map = bl_map_simple;
d->pr_key = v->scsi.pr_key;
pr_info("pNFS: using block device %s (reservation key 0x%llx)\n",
- d->bdev->bd_disk->disk_name, d->pr_key);
+ d->bdev_handle->bdev->bd_disk->disk_name, d->pr_key);
- ops = d->bdev->bd_disk->fops->pr_ops;
+ ops = d->bdev_handle->bdev->bd_disk->fops->pr_ops;
if (!ops) {
pr_err("pNFS: block device %s does not support reservations.",
- d->bdev->bd_disk->disk_name);
+ d->bdev_handle->bdev->bd_disk->disk_name);
error = -EINVAL;
goto out_blkdev_put;
}
- error = ops->pr_register(d->bdev, 0, d->pr_key, true);
+ error = ops->pr_register(d->bdev_handle->bdev, 0, d->pr_key, true);
if (error) {
pr_err("pNFS: failed to register key for block device %s.",
- d->bdev->bd_disk->disk_name);
+ d->bdev_handle->bdev->bd_disk->disk_name);
goto out_blkdev_put;
}
@@ -375,7 +373,7 @@ bl_parse_scsi(struct nfs_server *server, struct pnfs_block_dev *d,
return 0;
out_blkdev_put:
- blkdev_put(d->bdev, NULL);
+ bdev_release(d->bdev_handle);
return error;
}
diff --git a/fs/ocfs2/cluster/heartbeat.c b/fs/ocfs2/cluster/heartbeat.c
index 21472e3ed182..4d7efefa98c5 100644
--- a/fs/ocfs2/cluster/heartbeat.c
+++ b/fs/ocfs2/cluster/heartbeat.c
@@ -213,7 +213,7 @@ struct o2hb_region {
unsigned int hr_num_pages;
struct page **hr_slot_data;
- struct block_device *hr_bdev;
+ struct bdev_handle *hr_bdev_handle;
struct o2hb_disk_slot *hr_slots;
/* live node map of this region */
@@ -261,6 +261,11 @@ struct o2hb_region {
int hr_last_hb_status;
};
+static inline struct block_device *reg_bdev(struct o2hb_region *reg)
+{
+ return reg->hr_bdev_handle ? reg->hr_bdev_handle->bdev : NULL;
+}
+
struct o2hb_bio_wait_ctxt {
atomic_t wc_num_reqs;
struct completion wc_io_complete;
@@ -286,7 +291,7 @@ static void o2hb_write_timeout(struct work_struct *work)
hr_write_timeout_work.work);
mlog(ML_ERROR, "Heartbeat write timeout to device %pg after %u "
- "milliseconds\n", reg->hr_bdev,
+ "milliseconds\n", reg_bdev(reg),
jiffies_to_msecs(jiffies - reg->hr_last_timeout_start));
if (o2hb_global_heartbeat_active()) {
@@ -383,7 +388,7 @@ static void o2hb_nego_timeout(struct work_struct *work)
if (!test_bit(master_node, reg->hr_nego_node_bitmap)) {
printk(KERN_NOTICE "o2hb: node %d hb write hung for %ds on region %s (%pg).\n",
o2nm_this_node(), O2HB_NEGO_TIMEOUT_MS/1000,
- config_item_name(&reg->hr_item), reg->hr_bdev);
+ config_item_name(&reg->hr_item), reg_bdev(reg));
set_bit(master_node, reg->hr_nego_node_bitmap);
}
if (!bitmap_equal(reg->hr_nego_node_bitmap, live_node_bitmap,
@@ -398,7 +403,8 @@ static void o2hb_nego_timeout(struct work_struct *work)
}
printk(KERN_NOTICE "o2hb: all nodes hb write hung, maybe region %s (%pg) is down.\n",
- config_item_name(&reg->hr_item), reg->hr_bdev);
+ config_item_name(&reg->hr_item),
+ reg_bdev(reg));
/* approve negotiate timeout request. */
o2hb_arm_timeout(reg);
@@ -419,7 +425,7 @@ static void o2hb_nego_timeout(struct work_struct *work)
/* negotiate timeout with master node. */
printk(KERN_NOTICE "o2hb: node %d hb write hung for %ds on region %s (%pg), negotiate timeout with node %d.\n",
o2nm_this_node(), O2HB_NEGO_TIMEOUT_MS/1000, config_item_name(&reg->hr_item),
- reg->hr_bdev, master_node);
+ reg_bdev(reg), master_node);
ret = o2hb_send_nego_msg(reg->hr_key, O2HB_NEGO_TIMEOUT_MSG,
master_node);
if (ret)
@@ -436,7 +442,8 @@ static int o2hb_nego_timeout_handler(struct o2net_msg *msg, u32 len, void *data,
nego_msg = (struct o2hb_nego_msg *)msg->buf;
printk(KERN_NOTICE "o2hb: receive negotiate timeout message from node %d on region %s (%pg).\n",
- nego_msg->node_num, config_item_name(&reg->hr_item), reg->hr_bdev);
+ nego_msg->node_num, config_item_name(&reg->hr_item),
+ reg_bdev(reg));
if (nego_msg->node_num < O2NM_MAX_NODES)
set_bit(nego_msg->node_num, reg->hr_nego_node_bitmap);
else
@@ -451,7 +458,7 @@ static int o2hb_nego_approve_handler(struct o2net_msg *msg, u32 len, void *data,
struct o2hb_region *reg = data;
printk(KERN_NOTICE "o2hb: negotiate timeout approved by master node on region %s (%pg).\n",
- config_item_name(&reg->hr_item), reg->hr_bdev);
+ config_item_name(&reg->hr_item), reg_bdev(reg));
o2hb_arm_timeout(reg);
return 0;
}
@@ -515,7 +522,7 @@ static struct bio *o2hb_setup_one_bio(struct o2hb_region *reg,
* GFP_KERNEL that the local node can get fenced. It would be
* nicest if we could pre-allocate these bios and avoid this
* all together. */
- bio = bio_alloc(reg->hr_bdev, 16, opf, GFP_ATOMIC);
+ bio = bio_alloc(reg_bdev(reg), 16, opf, GFP_ATOMIC);
if (!bio) {
mlog(ML_ERROR, "Could not alloc slots BIO!\n");
bio = ERR_PTR(-ENOMEM);
@@ -687,7 +694,7 @@ static int o2hb_check_own_slot(struct o2hb_region *reg)
errstr = ERRSTR3;
mlog(ML_ERROR, "%s (%pg): expected(%u:0x%llx, 0x%llx), "
- "ondisk(%u:0x%llx, 0x%llx)\n", errstr, reg->hr_bdev,
+ "ondisk(%u:0x%llx, 0x%llx)\n", errstr, reg_bdev(reg),
slot->ds_node_num, (unsigned long long)slot->ds_last_generation,
(unsigned long long)slot->ds_last_time, hb_block->hb_node,
(unsigned long long)le64_to_cpu(hb_block->hb_generation),
@@ -861,7 +868,7 @@ static void o2hb_set_quorum_device(struct o2hb_region *reg)
goto unlock;
printk(KERN_NOTICE "o2hb: Region %s (%pg) is now a quorum device\n",
- config_item_name(&reg->hr_item), reg->hr_bdev);
+ config_item_name(&reg->hr_item), reg_bdev(reg));
set_bit(reg->hr_region_num, o2hb_quorum_region_bitmap);
@@ -920,7 +927,7 @@ static int o2hb_check_slot(struct o2hb_region *reg,
* consider it a transient miss but don't populate any
* other values as they may be junk. */
mlog(ML_ERROR, "Node %d has written a bad crc to %pg\n",
- slot->ds_node_num, reg->hr_bdev);
+ slot->ds_node_num, reg_bdev(reg));
o2hb_dump_slot(hb_block);
slot->ds_equal_samples++;
@@ -1003,8 +1010,8 @@ fire_callbacks:
"of %u ms, but our count is %u ms.\n"
"Please double check your configuration values "
"for 'O2CB_HEARTBEAT_THRESHOLD'\n",
- slot->ds_node_num, reg->hr_bdev, slot_dead_ms,
- dead_ms);
+ slot->ds_node_num, reg_bdev(reg),
+ slot_dead_ms, dead_ms);
}
goto out;
}
@@ -1143,7 +1150,7 @@ static int o2hb_do_disk_heartbeat(struct o2hb_region *reg)
* can't be sure that the new block ever made it to
* disk */
mlog(ML_ERROR, "Write error %d on device \"%pg\"\n",
- write_wc.wc_error, reg->hr_bdev);
+ write_wc.wc_error, reg_bdev(reg));
ret = write_wc.wc_error;
goto bail;
}
@@ -1169,7 +1176,7 @@ bail:
printk(KERN_NOTICE "o2hb: Unable to stabilize "
"heartbeat on region %s (%pg)\n",
config_item_name(&reg->hr_item),
- reg->hr_bdev);
+ reg_bdev(reg));
atomic_set(&reg->hr_steady_iterations, 0);
reg->hr_aborted_start = 1;
wake_up(&o2hb_steady_queue);
@@ -1489,7 +1496,7 @@ static void o2hb_region_release(struct config_item *item)
struct page *page;
struct o2hb_region *reg = to_o2hb_region(item);
- mlog(ML_HEARTBEAT, "hb region release (%pg)\n", reg->hr_bdev);
+ mlog(ML_HEARTBEAT, "hb region release (%pg)\n", reg_bdev(reg));
kfree(reg->hr_tmp_block);
@@ -1502,8 +1509,8 @@ static void o2hb_region_release(struct config_item *item)
kfree(reg->hr_slot_data);
}
- if (reg->hr_bdev)
- blkdev_put(reg->hr_bdev, NULL);
+ if (reg->hr_bdev_handle)
+ bdev_release(reg->hr_bdev_handle);
kfree(reg->hr_slots);
@@ -1562,7 +1569,7 @@ static ssize_t o2hb_region_block_bytes_store(struct config_item *item,
unsigned long block_bytes;
unsigned int block_bits;
- if (reg->hr_bdev)
+ if (reg->hr_bdev_handle)
return -EINVAL;
status = o2hb_read_block_input(reg, page, &block_bytes,
@@ -1591,7 +1598,7 @@ static ssize_t o2hb_region_start_block_store(struct config_item *item,
char *p = (char *)page;
ssize_t ret;
- if (reg->hr_bdev)
+ if (reg->hr_bdev_handle)
return -EINVAL;
ret = kstrtoull(p, 0, &tmp);
@@ -1616,7 +1623,7 @@ static ssize_t o2hb_region_blocks_store(struct config_item *item,
unsigned long tmp;
char *p = (char *)page;
- if (reg->hr_bdev)
+ if (reg->hr_bdev_handle)
return -EINVAL;
tmp = simple_strtoul(p, &p, 0);
@@ -1635,8 +1642,8 @@ static ssize_t o2hb_region_dev_show(struct config_item *item, char *page)
{
unsigned int ret = 0;
- if (to_o2hb_region(item)->hr_bdev)
- ret = sprintf(page, "%pg\n", to_o2hb_region(item)->hr_bdev);
+ if (to_o2hb_region(item)->hr_bdev_handle)
+ ret = sprintf(page, "%pg\n", reg_bdev(to_o2hb_region(item)));
return ret;
}
@@ -1745,7 +1752,10 @@ out:
return ret;
}
-/* this is acting as commit; we set up all of hr_bdev and hr_task or nothing */
+/*
+ * this is acting as commit; we set up all of hr_bdev_handle and hr_task or
+ * nothing
+ */
static ssize_t o2hb_region_dev_store(struct config_item *item,
const char *page,
size_t count)
@@ -1759,7 +1769,7 @@ static ssize_t o2hb_region_dev_store(struct config_item *item,
ssize_t ret = -EINVAL;
int live_threshold;
- if (reg->hr_bdev)
+ if (reg->hr_bdev_handle)
goto out;
/* We can't heartbeat without having had our node number
@@ -1785,16 +1795,15 @@ static ssize_t o2hb_region_dev_store(struct config_item *item,
if (!S_ISBLK(f.file->f_mapping->host->i_mode))
goto out2;
- reg->hr_bdev = blkdev_get_by_dev(f.file->f_mapping->host->i_rdev,
- BLK_OPEN_WRITE | BLK_OPEN_READ, NULL,
- NULL);
- if (IS_ERR(reg->hr_bdev)) {
- ret = PTR_ERR(reg->hr_bdev);
- reg->hr_bdev = NULL;
+ reg->hr_bdev_handle = bdev_open_by_dev(f.file->f_mapping->host->i_rdev,
+ BLK_OPEN_WRITE | BLK_OPEN_READ, NULL, NULL);
+ if (IS_ERR(reg->hr_bdev_handle)) {
+ ret = PTR_ERR(reg->hr_bdev_handle);
+ reg->hr_bdev_handle = NULL;
goto out2;
}
- sectsize = bdev_logical_block_size(reg->hr_bdev);
+ sectsize = bdev_logical_block_size(reg_bdev(reg));
if (sectsize != reg->hr_block_bytes) {
mlog(ML_ERROR,
"blocksize %u incorrect for device, expected %d",
@@ -1890,12 +1899,12 @@ static ssize_t o2hb_region_dev_store(struct config_item *item,
if (hb_task && o2hb_global_heartbeat_active())
printk(KERN_NOTICE "o2hb: Heartbeat started on region %s (%pg)\n",
- config_item_name(&reg->hr_item), reg->hr_bdev);
+ config_item_name(&reg->hr_item), reg_bdev(reg));
out3:
if (ret < 0) {
- blkdev_put(reg->hr_bdev, NULL);
- reg->hr_bdev = NULL;
+ bdev_release(reg->hr_bdev_handle);
+ reg->hr_bdev_handle = NULL;
}
out2:
fdput(f);
@@ -2085,7 +2094,7 @@ static void o2hb_heartbeat_group_drop_item(struct config_group *group,
printk(KERN_NOTICE "o2hb: Heartbeat %s on region %s (%pg)\n",
((atomic_read(&reg->hr_steady_iterations) == 0) ?
"stopped" : "start aborted"), config_item_name(item),
- reg->hr_bdev);
+ reg_bdev(reg));
}
/*
diff --git a/fs/reiserfs/journal.c b/fs/reiserfs/journal.c
index 015bfe4e4524..171c912af50f 100644
--- a/fs/reiserfs/journal.c
+++ b/fs/reiserfs/journal.c
@@ -90,8 +90,7 @@ static int flush_commit_list(struct super_block *s,
static int can_dirty(struct reiserfs_journal_cnode *cn);
static int journal_join(struct reiserfs_transaction_handle *th,
struct super_block *sb);
-static void release_journal_dev(struct super_block *super,
- struct reiserfs_journal *journal);
+static void release_journal_dev(struct reiserfs_journal *journal);
static void dirty_one_transaction(struct super_block *s,
struct reiserfs_journal_list *jl);
static void flush_async_commits(struct work_struct *work);
@@ -1893,7 +1892,7 @@ static void free_journal_ram(struct super_block *sb)
* j_header_bh is on the journal dev, make sure
* not to release the journal dev until we brelse j_header_bh
*/
- release_journal_dev(sb, journal);
+ release_journal_dev(journal);
vfree(journal);
}
@@ -2387,7 +2386,7 @@ static int journal_read(struct super_block *sb)
cur_dblock = SB_ONDISK_JOURNAL_1st_BLOCK(sb);
reiserfs_info(sb, "checking transaction log (%pg)\n",
- journal->j_dev_bd);
+ journal->j_bdev_handle->bdev);
start = ktime_get_seconds();
/*
@@ -2448,7 +2447,7 @@ static int journal_read(struct super_block *sb)
* device and journal device to be the same
*/
d_bh =
- reiserfs_breada(journal->j_dev_bd, cur_dblock,
+ reiserfs_breada(journal->j_bdev_handle->bdev, cur_dblock,
sb->s_blocksize,
SB_ONDISK_JOURNAL_1st_BLOCK(sb) +
SB_ONDISK_JOURNAL_SIZE(sb));
@@ -2587,17 +2586,11 @@ static void journal_list_init(struct super_block *sb)
SB_JOURNAL(sb)->j_current_jl = alloc_journal_list(sb);
}
-static void release_journal_dev(struct super_block *super,
- struct reiserfs_journal *journal)
+static void release_journal_dev(struct reiserfs_journal *journal)
{
- if (journal->j_dev_bd != NULL) {
- void *holder = NULL;
-
- if (journal->j_dev_bd->bd_dev != super->s_dev)
- holder = journal;
-
- blkdev_put(journal->j_dev_bd, holder);
- journal->j_dev_bd = NULL;
+ if (journal->j_bdev_handle) {
+ bdev_release(journal->j_bdev_handle);
+ journal->j_bdev_handle = NULL;
}
}
@@ -2612,7 +2605,7 @@ static int journal_init_dev(struct super_block *super,
result = 0;
- journal->j_dev_bd = NULL;
+ journal->j_bdev_handle = NULL;
jdev = SB_ONDISK_JOURNAL_DEVICE(super) ?
new_decode_dev(SB_ONDISK_JOURNAL_DEVICE(super)) : super->s_dev;
@@ -2623,36 +2616,37 @@ static int journal_init_dev(struct super_block *super,
if ((!jdev_name || !jdev_name[0])) {
if (jdev == super->s_dev)
holder = NULL;
- journal->j_dev_bd = blkdev_get_by_dev(jdev, blkdev_mode, holder,
- NULL);
- if (IS_ERR(journal->j_dev_bd)) {
- result = PTR_ERR(journal->j_dev_bd);
- journal->j_dev_bd = NULL;
+ journal->j_bdev_handle = bdev_open_by_dev(jdev, blkdev_mode,
+ holder, NULL);
+ if (IS_ERR(journal->j_bdev_handle)) {
+ result = PTR_ERR(journal->j_bdev_handle);
+ journal->j_bdev_handle = NULL;
reiserfs_warning(super, "sh-458",
"cannot init journal device unknown-block(%u,%u): %i",
MAJOR(jdev), MINOR(jdev), result);
return result;
} else if (jdev != super->s_dev)
- set_blocksize(journal->j_dev_bd, super->s_blocksize);
+ set_blocksize(journal->j_bdev_handle->bdev,
+ super->s_blocksize);
return 0;
}
- journal->j_dev_bd = blkdev_get_by_path(jdev_name, blkdev_mode, holder,
- NULL);
- if (IS_ERR(journal->j_dev_bd)) {
- result = PTR_ERR(journal->j_dev_bd);
- journal->j_dev_bd = NULL;
+ journal->j_bdev_handle = bdev_open_by_path(jdev_name, blkdev_mode,
+ holder, NULL);
+ if (IS_ERR(journal->j_bdev_handle)) {
+ result = PTR_ERR(journal->j_bdev_handle);
+ journal->j_bdev_handle = NULL;
reiserfs_warning(super, "sh-457",
"journal_init_dev: Cannot open '%s': %i",
jdev_name, result);
return result;
}
- set_blocksize(journal->j_dev_bd, super->s_blocksize);
+ set_blocksize(journal->j_bdev_handle->bdev, super->s_blocksize);
reiserfs_info(super,
"journal_init_dev: journal device: %pg\n",
- journal->j_dev_bd);
+ journal->j_bdev_handle->bdev);
return 0;
}
@@ -2810,7 +2804,7 @@ int journal_init(struct super_block *sb, const char *j_dev_name,
"journal header magic %x (device %pg) does "
"not match to magic found in super block %x",
jh->jh_journal.jp_journal_magic,
- journal->j_dev_bd,
+ journal->j_bdev_handle->bdev,
sb_jp_journal_magic(rs));
brelse(bhjh);
goto free_and_return;
@@ -2834,7 +2828,7 @@ int journal_init(struct super_block *sb, const char *j_dev_name,
reiserfs_info(sb, "journal params: device %pg, size %u, "
"journal first block %u, max trans len %u, max batch %u, "
"max commit age %u, max trans age %u\n",
- journal->j_dev_bd,
+ journal->j_bdev_handle->bdev,
SB_ONDISK_JOURNAL_SIZE(sb),
SB_ONDISK_JOURNAL_1st_BLOCK(sb),
journal->j_trans_max,
diff --git a/fs/reiserfs/procfs.c b/fs/reiserfs/procfs.c
index 3dba8acf4e83..83cb9402e0f9 100644
--- a/fs/reiserfs/procfs.c
+++ b/fs/reiserfs/procfs.c
@@ -354,7 +354,7 @@ static int show_journal(struct seq_file *m, void *unused)
"prepare: \t%12lu\n"
"prepare_retry: \t%12lu\n",
DJP(jp_journal_1st_block),
- SB_JOURNAL(sb)->j_dev_bd,
+ SB_JOURNAL(sb)->j_bdev_handle->bdev,
DJP(jp_journal_dev),
DJP(jp_journal_size),
DJP(jp_journal_trans_max),
diff --git a/fs/reiserfs/reiserfs.h b/fs/reiserfs/reiserfs.h
index 7d12b8c5b2fa..8ad41271c256 100644
--- a/fs/reiserfs/reiserfs.h
+++ b/fs/reiserfs/reiserfs.h
@@ -299,7 +299,7 @@ struct reiserfs_journal {
/* oldest journal block. start here for traverse */
struct reiserfs_journal_cnode *j_first;
- struct block_device *j_dev_bd;
+ struct bdev_handle *j_bdev_handle;
/* first block on s_dev of reserved area journal */
int j_1st_reserved_block;
@@ -2809,9 +2809,12 @@ struct reiserfs_journal_header {
#define journal_hash(t,sb,block) ((t)[_jhashfn((sb),(block)) & JBH_HASH_MASK])
/* We need these to make journal.c code more readable */
-#define journal_find_get_block(s, block) __find_get_block(SB_JOURNAL(s)->j_dev_bd, block, s->s_blocksize)
-#define journal_getblk(s, block) __getblk(SB_JOURNAL(s)->j_dev_bd, block, s->s_blocksize)
-#define journal_bread(s, block) __bread(SB_JOURNAL(s)->j_dev_bd, block, s->s_blocksize)
+#define journal_find_get_block(s, block) __find_get_block(\
+ SB_JOURNAL(s)->j_bdev_handle->bdev, block, s->s_blocksize)
+#define journal_getblk(s, block) __getblk(SB_JOURNAL(s)->j_bdev_handle->bdev,\
+ block, s->s_blocksize)
+#define journal_bread(s, block) __bread(SB_JOURNAL(s)->j_bdev_handle->bdev,\
+ block, s->s_blocksize)
enum reiserfs_bh_state_bits {
BH_JDirty = BH_PrivateStart, /* buffer is in current transaction */
diff --git a/fs/romfs/super.c b/fs/romfs/super.c
index 5c35f6c76037..b1bdfbc211c3 100644
--- a/fs/romfs/super.c
+++ b/fs/romfs/super.c
@@ -593,7 +593,7 @@ static void romfs_kill_sb(struct super_block *sb)
#ifdef CONFIG_ROMFS_ON_BLOCK
if (sb->s_bdev) {
sync_blockdev(sb->s_bdev);
- blkdev_put(sb->s_bdev, sb);
+ bdev_release(sb->s_bdev_handle);
}
#endif
}
diff --git a/fs/super.c b/fs/super.c
index 2d762ce67f6e..c7b452e12e4c 100644
--- a/fs/super.c
+++ b/fs/super.c
@@ -1419,32 +1419,48 @@ EXPORT_SYMBOL(sget_dev);
#ifdef CONFIG_BLOCK
/*
- * Lock a super block that the callers holds a reference to.
+ * Lock the superblock that is holder of the bdev. Returns the superblock
+ * pointer if we successfully locked the superblock and it is alive. Otherwise
+ * we return NULL and just unlock bdev->bd_holder_lock.
*
- * The caller needs to ensure that the super_block isn't being freed while
- * calling this function, e.g. by holding a lock over the call to this function
- * and the place that clears the pointer to the superblock used by this function
- * before freeing the superblock.
+ * The function must be called with bdev->bd_holder_lock and releases it.
*/
-static bool super_lock_shared_active(struct super_block *sb)
+static struct super_block *bdev_super_lock_shared(struct block_device *bdev)
+ __releases(&bdev->bd_holder_lock)
{
- bool born = super_lock_shared(sb);
+ struct super_block *sb = bdev->bd_holder;
+ bool born;
+
+ lockdep_assert_held(&bdev->bd_holder_lock);
+ lockdep_assert_not_held(&sb->s_umount);
+ lockdep_assert_not_held(&bdev->bd_disk->open_mutex);
+
+ /* Make sure sb doesn't go away from under us */
+ spin_lock(&sb_lock);
+ sb->s_count++;
+ spin_unlock(&sb_lock);
+ mutex_unlock(&bdev->bd_holder_lock);
+ born = super_lock_shared(sb);
if (!born || !sb->s_root || !(sb->s_flags & SB_ACTIVE)) {
super_unlock_shared(sb);
- return false;
+ put_super(sb);
+ return NULL;
}
- return true;
+ /*
+ * The superblock is active and we hold s_umount, we can drop our
+ * temporary reference now.
+ */
+ put_super(sb);
+ return sb;
}
static void fs_bdev_mark_dead(struct block_device *bdev, bool surprise)
{
- struct super_block *sb = bdev->bd_holder;
-
- /* bd_holder_lock ensures that the sb isn't freed */
- lockdep_assert_held(&bdev->bd_holder_lock);
+ struct super_block *sb;
- if (!super_lock_shared_active(sb))
+ sb = bdev_super_lock_shared(bdev);
+ if (!sb)
return;
if (!surprise)
@@ -1459,11 +1475,10 @@ static void fs_bdev_mark_dead(struct block_device *bdev, bool surprise)
static void fs_bdev_sync(struct block_device *bdev)
{
- struct super_block *sb = bdev->bd_holder;
-
- lockdep_assert_held(&bdev->bd_holder_lock);
+ struct super_block *sb;
- if (!super_lock_shared_active(sb))
+ sb = bdev_super_lock_shared(bdev);
+ if (!sb)
return;
sync_filesystem(sb);
super_unlock_shared(sb);
@@ -1479,14 +1494,16 @@ int setup_bdev_super(struct super_block *sb, int sb_flags,
struct fs_context *fc)
{
blk_mode_t mode = sb_open_mode(sb_flags);
+ struct bdev_handle *bdev_handle;
struct block_device *bdev;
- bdev = blkdev_get_by_dev(sb->s_dev, mode, sb, &fs_holder_ops);
- if (IS_ERR(bdev)) {
+ bdev_handle = bdev_open_by_dev(sb->s_dev, mode, sb, &fs_holder_ops);
+ if (IS_ERR(bdev_handle)) {
if (fc)
errorf(fc, "%s: Can't open blockdev", fc->source);
- return PTR_ERR(bdev);
+ return PTR_ERR(bdev_handle);
}
+ bdev = bdev_handle->bdev;
/*
* This really should be in blkdev_get_by_dev, but right now can't due
@@ -1494,7 +1511,7 @@ int setup_bdev_super(struct super_block *sb, int sb_flags,
* writable from userspace even for a read-only block device.
*/
if ((mode & BLK_OPEN_WRITE) && bdev_read_only(bdev)) {
- blkdev_put(bdev, sb);
+ bdev_release(bdev_handle);
return -EACCES;
}
@@ -1510,10 +1527,11 @@ int setup_bdev_super(struct super_block *sb, int sb_flags,
mutex_unlock(&bdev->bd_fsfreeze_mutex);
if (fc)
warnf(fc, "%pg: Can't mount, blockdev is frozen", bdev);
- blkdev_put(bdev, sb);
+ bdev_release(bdev_handle);
return -EBUSY;
}
spin_lock(&sb_lock);
+ sb->s_bdev_handle = bdev_handle;
sb->s_bdev = bdev;
sb->s_bdi = bdi_get(bdev->bd_disk->bdi);
if (bdev_stable_writes(bdev))
@@ -1646,7 +1664,7 @@ void kill_block_super(struct super_block *sb)
generic_shutdown_super(sb);
if (bdev) {
sync_blockdev(bdev);
- blkdev_put(bdev, sb);
+ bdev_release(sb->s_bdev_handle);
}
}
diff --git a/fs/xfs/xfs_buf.c b/fs/xfs/xfs_buf.c
index c1ece4a08ff4..003e157241da 100644
--- a/fs/xfs/xfs_buf.c
+++ b/fs/xfs/xfs_buf.c
@@ -1945,8 +1945,6 @@ void
xfs_free_buftarg(
struct xfs_buftarg *btp)
{
- struct block_device *bdev = btp->bt_bdev;
-
unregister_shrinker(&btp->bt_shrinker);
ASSERT(percpu_counter_sum(&btp->bt_io_count) == 0);
percpu_counter_destroy(&btp->bt_io_count);
@@ -1954,8 +1952,8 @@ xfs_free_buftarg(
fs_put_dax(btp->bt_daxdev, btp->bt_mount);
/* the main block device is closed by kill_block_super */
- if (bdev != btp->bt_mount->m_super->s_bdev)
- blkdev_put(bdev, btp->bt_mount->m_super);
+ if (btp->bt_bdev != btp->bt_mount->m_super->s_bdev)
+ bdev_release(btp->bt_bdev_handle);
kmem_free(btp);
}
@@ -1990,16 +1988,15 @@ xfs_setsize_buftarg(
*/
STATIC int
xfs_setsize_buftarg_early(
- xfs_buftarg_t *btp,
- struct block_device *bdev)
+ xfs_buftarg_t *btp)
{
- return xfs_setsize_buftarg(btp, bdev_logical_block_size(bdev));
+ return xfs_setsize_buftarg(btp, bdev_logical_block_size(btp->bt_bdev));
}
struct xfs_buftarg *
xfs_alloc_buftarg(
struct xfs_mount *mp,
- struct block_device *bdev)
+ struct bdev_handle *bdev_handle)
{
xfs_buftarg_t *btp;
const struct dax_holder_operations *ops = NULL;
@@ -2010,9 +2007,10 @@ xfs_alloc_buftarg(
btp = kmem_zalloc(sizeof(*btp), KM_NOFS);
btp->bt_mount = mp;
- btp->bt_dev = bdev->bd_dev;
- btp->bt_bdev = bdev;
- btp->bt_daxdev = fs_dax_get_by_bdev(bdev, &btp->bt_dax_part_off,
+ btp->bt_bdev_handle = bdev_handle;
+ btp->bt_dev = bdev_handle->bdev->bd_dev;
+ btp->bt_bdev = bdev_handle->bdev;
+ btp->bt_daxdev = fs_dax_get_by_bdev(btp->bt_bdev, &btp->bt_dax_part_off,
mp, ops);
/*
@@ -2022,7 +2020,7 @@ xfs_alloc_buftarg(
ratelimit_state_init(&btp->bt_ioerror_rl, 30 * HZ,
DEFAULT_RATELIMIT_BURST);
- if (xfs_setsize_buftarg_early(btp, bdev))
+ if (xfs_setsize_buftarg_early(btp))
goto error_free;
if (list_lru_init(&btp->bt_lru))
diff --git a/fs/xfs/xfs_buf.h b/fs/xfs/xfs_buf.h
index df8f47953bb4..ada9d310b7d3 100644
--- a/fs/xfs/xfs_buf.h
+++ b/fs/xfs/xfs_buf.h
@@ -98,6 +98,7 @@ typedef unsigned int xfs_buf_flags_t;
*/
typedef struct xfs_buftarg {
dev_t bt_dev;
+ struct bdev_handle *bt_bdev_handle;
struct block_device *bt_bdev;
struct dax_device *bt_daxdev;
u64 bt_dax_part_off;
@@ -364,7 +365,7 @@ xfs_buf_update_cksum(struct xfs_buf *bp, unsigned long cksum_offset)
* Handling of buftargs.
*/
struct xfs_buftarg *xfs_alloc_buftarg(struct xfs_mount *mp,
- struct block_device *bdev);
+ struct bdev_handle *bdev_handle);
extern void xfs_free_buftarg(struct xfs_buftarg *);
extern void xfs_buftarg_wait(struct xfs_buftarg *);
extern void xfs_buftarg_drain(struct xfs_buftarg *);
diff --git a/fs/xfs/xfs_super.c b/fs/xfs/xfs_super.c
index 819a3568b28f..f0ae07828153 100644
--- a/fs/xfs/xfs_super.c
+++ b/fs/xfs/xfs_super.c
@@ -361,14 +361,15 @@ STATIC int
xfs_blkdev_get(
xfs_mount_t *mp,
const char *name,
- struct block_device **bdevp)
+ struct bdev_handle **handlep)
{
int error = 0;
- *bdevp = blkdev_get_by_path(name, BLK_OPEN_READ | BLK_OPEN_WRITE,
- mp->m_super, &fs_holder_ops);
- if (IS_ERR(*bdevp)) {
- error = PTR_ERR(*bdevp);
+ *handlep = bdev_open_by_path(name, BLK_OPEN_READ | BLK_OPEN_WRITE,
+ mp->m_super, &fs_holder_ops);
+ if (IS_ERR(*handlep)) {
+ error = PTR_ERR(*handlep);
+ *handlep = NULL;
xfs_warn(mp, "Invalid device [%s], error=%d", name, error);
}
@@ -433,7 +434,7 @@ xfs_open_devices(
{
struct super_block *sb = mp->m_super;
struct block_device *ddev = sb->s_bdev;
- struct block_device *logdev = NULL, *rtdev = NULL;
+ struct bdev_handle *logdev_handle = NULL, *rtdev_handle = NULL;
int error;
/*
@@ -446,17 +447,19 @@ xfs_open_devices(
* Open real time and log devices - order is important.
*/
if (mp->m_logname) {
- error = xfs_blkdev_get(mp, mp->m_logname, &logdev);
+ error = xfs_blkdev_get(mp, mp->m_logname, &logdev_handle);
if (error)
goto out_relock;
}
if (mp->m_rtname) {
- error = xfs_blkdev_get(mp, mp->m_rtname, &rtdev);
+ error = xfs_blkdev_get(mp, mp->m_rtname, &rtdev_handle);
if (error)
goto out_close_logdev;
- if (rtdev == ddev || rtdev == logdev) {
+ if (rtdev_handle->bdev == ddev ||
+ (logdev_handle &&
+ rtdev_handle->bdev == logdev_handle->bdev)) {
xfs_warn(mp,
"Cannot mount filesystem with identical rtdev and ddev/logdev.");
error = -EINVAL;
@@ -468,22 +471,25 @@ xfs_open_devices(
* Setup xfs_mount buffer target pointers
*/
error = -ENOMEM;
- mp->m_ddev_targp = xfs_alloc_buftarg(mp, ddev);
+ mp->m_ddev_targp = xfs_alloc_buftarg(mp, sb->s_bdev_handle);
if (!mp->m_ddev_targp)
goto out_close_rtdev;
- if (rtdev) {
- mp->m_rtdev_targp = xfs_alloc_buftarg(mp, rtdev);
+ if (rtdev_handle) {
+ mp->m_rtdev_targp = xfs_alloc_buftarg(mp, rtdev_handle);
if (!mp->m_rtdev_targp)
goto out_free_ddev_targ;
}
- if (logdev && logdev != ddev) {
- mp->m_logdev_targp = xfs_alloc_buftarg(mp, logdev);
+ if (logdev_handle && logdev_handle->bdev != ddev) {
+ mp->m_logdev_targp = xfs_alloc_buftarg(mp, logdev_handle);
if (!mp->m_logdev_targp)
goto out_free_rtdev_targ;
} else {
mp->m_logdev_targp = mp->m_ddev_targp;
+ /* Handle won't be used, drop it */
+ if (logdev_handle)
+ bdev_release(logdev_handle);
}
error = 0;
@@ -497,11 +503,11 @@ out_relock:
out_free_ddev_targ:
xfs_free_buftarg(mp->m_ddev_targp);
out_close_rtdev:
- if (rtdev)
- blkdev_put(rtdev, sb);
+ if (rtdev_handle)
+ bdev_release(rtdev_handle);
out_close_logdev:
- if (logdev && logdev != ddev)
- blkdev_put(logdev, sb);
+ if (logdev_handle)
+ bdev_release(logdev_handle);
goto out_relock;
}
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