Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-11-27 06:31:52 +00:00
Code Issues Packages Projects Releases Wiki Activity

btrfs: don't do repair validation for checksum errors

Browse Source 
The purpose of the validation step is to distinguish between good and
bad sectors in a failed multi-sector read. If a multi-sector read
succeeded but some of those sectors had checksum errors, we don't need
to validate anything; we know the sectors with bad checksums need to be
repaired.

Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Omar Sandoval <osandov@fb.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Omar Sandoval 2020-04-16 14:46:15 -07:00 committed by David Sterba
parent c7333972b9
commit f337bd7478
1 changed files with 8 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
fs/btrfs/extent_io.c
View File

@ -2640,6 +2640,14 @@ static bool btrfs_io_needs_validation(struct inode *inode, struct bio *bio)
u64 len = 0;
int i;
/*
* If bi_status is BLK_STS_OK, then this was a checksum error, not an
* I/O error. In this case, we already know exactly which sector was
* bad, so we don't need to validate.
*/
if (bio->bi_status == BLK_STS_OK)
return false;
/*
* We need to validate each sector individually if the failed I/O was
* for multiple sectors.