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authorMiao Xie <miaox@cn.fujitsu.com>2014-09-03 21:35:33 +0800
committerChris Mason <clm@fb.com>2014-09-17 13:38:33 -0700
commit935e5cc935bcbf9b3d0dd59fed7dbc0f2ebca6bc (patch)
tree2489d657687317839ab01cd1c617356851839726 /fs/btrfs/check-integrity.c
parent1c43366d3b3f0fa6c6e81aaf3aa18e0550245dad (diff)
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/check-integrity.c')
-rw-r--r--fs/btrfs/check-integrity.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/btrfs/check-integrity.c b/fs/btrfs/check-integrity.c
index e0033c843ce7..cb7f3fe9c9f6 100644
--- a/fs/btrfs/check-integrity.c
+++ b/fs/btrfs/check-integrity.c
@@ -807,7 +807,7 @@ static int btrfsic_process_superblock_dev_mirror(
/* super block bytenr is always the unmapped device bytenr */
dev_bytenr = btrfs_sb_offset(superblock_mirror_num);
- if (dev_bytenr + BTRFS_SUPER_INFO_SIZE > device->total_bytes)
+ if (dev_bytenr + BTRFS_SUPER_INFO_SIZE > device->commit_total_bytes)
return -1;
bh = __bread(superblock_bdev, dev_bytenr / 4096,
BTRFS_SUPER_INFO_SIZE);