[PATCH 5/8] btrfs: Increment device corruption error in case of checksum error

Nikolay Borisov
2020-07-02T12:41:53Z

Now that btrfs_io_bio have access to btrfs_device we can safely
increment the device corruption counter on error. There is one notable
exception - repair bios for raid. Since those don't go through the
normal submit_stripe_bio callpath but through raid56_parity_recover thus
repair bios won't have their device set.

Link: https://lore.kernel.org/linux-btrfs/4857863.FCrPRfMyHP@liv/
Signed-off-by: Nikolay Borisov <nborisov@suse.com>
---
fs/btrfs/inode.c | 3 +++
1 file changed, 3 insertions(+)

diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index e7600b0fd9b5..c6824d0ce59d 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -2822,6 +2822,9 @@ static int check_data_csum(struct inode *inode, struct btrfs_io_bio *io_bio,
zeroit:
btrfs_print_data_csum_error(BTRFS_I(inode), start, csum, csum_expected,
io_bio->mirror_num);
+ if (io_bio->dev)
+ btrfs_dev_stat_inc_and_print(io_bio->dev,
+ BTRFS_DEV_STAT_CORRUPTION_ERRS);
memset(kaddr + pgoff, 1, len);
flush_dcache_page(page);
kunmap_atomic(kaddr);
--
2.17.1