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| author | David Sterba <dsterba@suse.com> | 2019-03-07 15:40:50 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-04-03 06:27:27 +0200 |
| commit | da2dea634c2223ce6a3492dd3aaa06aa43c1a6d1 (patch) | |
| tree | 28231728cbe41d00a0c26429559ea9f9bb0bbdb3 | |
| parent | 70c88bf99441e63087f64c614bd2ff1d81bcdcdf (diff) | |
| download | talos-obmc-linux-da2dea634c2223ce6a3492dd3aaa06aa43c1a6d1.tar.gz talos-obmc-linux-da2dea634c2223ce6a3492dd3aaa06aa43c1a6d1.zip | |
btrfs: don't report readahead errors and don't update statistics
commit 0cc068e6ee59c1fffbfa977d8bf868b7551d80ac upstream.
As readahead is an optimization, all errors are usually filtered out,
but still properly handled when the real read call is done. The commit
5e9d398240b2 ("btrfs: readpages() should submit IO as read-ahead") added
REQ_RAHEAD to readpages() because that's only used for readahead
(despite what one would expect from the callback name).
This causes a flood of messages and inflated read error stats, so skip
reporting in case it's readahead.
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=202403
Reported-by: LimeTech <tomm@lime-technology.com>
Fixes: 5e9d398240b2 ("btrfs: readpages() should submit IO as read-ahead")
CC: stable@vger.kernel.org # 4.19+
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | fs/btrfs/volumes.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c index 48523bcabae9..88a323a453d8 100644 --- a/fs/btrfs/volumes.c +++ b/fs/btrfs/volumes.c @@ -6413,7 +6413,7 @@ static void btrfs_end_bio(struct bio *bio) if (bio_op(bio) == REQ_OP_WRITE) btrfs_dev_stat_inc_and_print(dev, BTRFS_DEV_STAT_WRITE_ERRS); - else + 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) |
