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bcache: fix misleading error message in bch_count_io_errors()

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Bcache only does recoverable I/O for read operations by calling
cached_dev_read_error(). For write opertions there is no I/O recovery for
failed requests.

But in bch_count_io_errors() no matter read or write I/Os, before errors
counter reaches io error limit, pr_err() always prints "IO error on %,
recoverying". For write requests this information is misleading, because
there is no I/O recovery at all.

This patch adds a parameter 'is_read' to bch_count_io_errors(), and only
prints "recovering" by pr_err() when the bio direction is READ.

Signed-off-by: Coly Li <colyli@suse.de>
Reviewed-by: Michael Lyle <mlyle@lyle.org>
Reviewed-by: Tang Junhui <tang.junhui@zte.com.cn>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Coly Li
2018-01-08 12:21:29 -08:00
committed by Jens Axboe
parent 2831231d4c
commit 5138ac6748
4 changed files with 16 additions and 7 deletions
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4
drivers/md/bcache/writeback.c
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@@ -244,8 +244,10 @@ static void read_dirty_endio(struct bio *bio)
struct keybuf_key *w = bio->bi_private;
struct dirty_io *io = w->private;
/* is_read = 1 */
bch_count_io_errors(PTR_CACHE(io->dc->disk.c, &w->key, 0),
bio->bi_status, "reading dirty data from cache");
bio->bi_status, 1,
"reading dirty data from cache");
dirty_endio(bio);
}