This is a note to let you know that I've just added the patch titled
btrfs: fix unnecessary increment of read error stat on write error
to the 6.2-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
btrfs-fix-unnecessary-increment-of-read-error-stat-on-write-error.patch
and it can be found in the queue-6.2 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 98e8d36a26c2ed22f78316df7d4bf33e554b9f9f Mon Sep 17 00:00:00 2001
From: Naohiro Aota <naohiro.aota@xxxxxxx>
Date: Mon, 13 Feb 2023 14:10:38 +0900
Subject: btrfs: fix unnecessary increment of read error stat on write error
From: Naohiro Aota <naohiro.aota@xxxxxxx>
commit 98e8d36a26c2ed22f78316df7d4bf33e554b9f9f upstream.
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@xxxxxxxxxxxxxxx # 6.1+
Reviewed-by: Christoph Hellwig <hch@xxxxxx>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@xxxxxxx>
Signed-off-by: Naohiro Aota <naohiro.aota@xxxxxxx>
Reviewed-by: David Sterba <dsterba@xxxxxxxx>
Signed-off-by: David Sterba <dsterba@xxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
fs/btrfs/bio.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/fs/btrfs/bio.c
+++ b/fs/btrfs/bio.c
@@ -72,7 +72,7 @@ static void btrfs_log_dev_io_error(struc
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);
Patches currently in stable-queue which might be from naohiro.aota@xxxxxxx are
queue-6.2/btrfs-fix-unnecessary-increment-of-read-error-stat-on-write-error.patch
