Current btrfs_log_dev_io_error() increases the read error count even if the erroneous IO is a WRITE request. This is because it forget to use "else if", and all the error WRITE requests counts as READ error as there is (of course) no REQ_RAHEAD bit set.

Fixes: c3a62baf21ad ("btrfs: use chained bios when cloning") CC: stable@vger.kernel.org # 6.1 Signed-off-by: Naohiro Aota naohiro.aota@wdc.com --- fs/btrfs/bio.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/btrfs/bio.c b/fs/btrfs/bio.c index d8b90f95b157..726592868e9c 100644 --- a/fs/btrfs/bio.c +++ b/fs/btrfs/bio.c @@ -287,7 +287,7 @@ static void btrfs_log_dev_io_error(struct bio *bio, struct btrfs_device *dev)

if (btrfs_op(bio) == BTRFS_MAP_WRITE) btrfs_dev_stat_inc_and_print(dev, BTRFS_DEV_STAT_WRITE_ERRS); - if (!(bio->bi_opf & REQ_RAHEAD)) + else if (!(bio->bi_opf & REQ_RAHEAD)) btrfs_dev_stat_inc_and_print(dev, BTRFS_DEV_STAT_READ_ERRS); if (bio->bi_opf & REQ_PREFLUSH) btrfs_dev_stat_inc_and_print(dev, BTRFS_DEV_STAT_FLUSH_ERRS);