diff options
| author |   Miao Xie <miaox@cn.fujitsu.com> | 2014-09-03 21:35:33 +0800 |
|---|---|---|
| committer |   Chris Mason <clm@fb.com> | 2014-09-17 13:38:33 -0700 |
| commit | 935e5cc935bcbf9b3d0dd59fed7dbc0f2ebca6bc (patch) | |
| tree | 2489d657687317839ab01cd1c617356851839726 /fs/btrfs/disk-io.c | |
| parent | Btrfs: fix unprotected assignment of the target device (diff) | |
| download | linux-dev-935e5cc935bcbf9b3d0dd59fed7dbc0f2ebca6bc.tar.xz linux-dev-935e5cc935bcbf9b3d0dd59fed7dbc0f2ebca6bc.zip | |
Btrfs: fix wrong disk size when writing super blocks
total_size will be changed when resizing a device, and disk_total_size
will be changed if resizing is successful. Meanwhile, the on-disk super
blocks of the previous transaction might not be updated. Considering
the consistency of the metadata in the previous transaction, We should
use the size in the previous transaction to check if the super block is
beyond the boundary of the device. Fix it.
Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>
Signed-off-by: Chris Mason <clm@fb.com>
Diffstat (limited to 'fs/btrfs/disk-io.c')
| -rw-r--r-- | fs/btrfs/disk-io.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c index dbd792754b27..0cd18b725554 100644 --- a/fs/btrfs/disk-io.c +++ b/fs/btrfs/disk-io.c @@ -3127,7 +3127,8 @@ static int write_dev_supers(struct btrfs_device *device, for (i = 0; i < max_mirrors; i++) { bytenr = btrfs_sb_offset(i); - if (bytenr + BTRFS_SUPER_INFO_SIZE >= device->total_bytes) + if (bytenr + BTRFS_SUPER_INFO_SIZE >= + device->commit_total_bytes) break; if (wait) { @@ -3444,7 +3445,7 @@ static int write_all_supers(struct btrfs_root *root, int max_mirrors) btrfs_set_stack_device_type(dev_item, dev->type); btrfs_set_stack_device_id(dev_item, dev->devid); btrfs_set_stack_device_total_bytes(dev_item, - dev->disk_total_bytes); + dev->commit_total_bytes); btrfs_set_stack_device_bytes_used(dev_item, dev->bytes_used); btrfs_set_stack_device_io_align(dev_item, dev->io_align); btrfs_set_stack_device_io_width(dev_item, dev->io_width); |