diff options
| author | Coly Li <colyli@suse.de> | 2018-03-18 17:36:24 -0700 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2018-03-18 20:15:20 -0600 |
| commit | 27a40ab9269e79b55672312b324f8f29d94463d4 (patch) | |
| tree | 82fd33e12b58e2ac79f5146984be7e02cd62f62a /drivers/md/bcache/writeback.c | |
| parent | df2b94313ae5b4f60d49e01d4dff5acb4c2757cf (diff) | |
bcache: add backing_request_endio() for bi_end_io
In order to catch I/O error of backing device, a separate bi_end_io
call back is required. Then a per backing device counter can record I/O
errors number and retire the backing device if the counter reaches a
per backing device I/O error limit.
This patch adds backing_request_endio() to bcache backing device I/O code
path, this is a preparation for further complicated backing device failure
handling. So far there is no real code logic change, I make this change a
separate patch to make sure it is stable and reliable for further work.
Changelog:
v2: Fix code comments typo, remove a redundant bch_writeback_add() line
added in v4 patch set.
v1: indeed this is new added in this patch set.
[mlyle: truncated commit subject]
Signed-off-by: Coly Li <colyli@suse.de>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Reviewed-by: Michael Lyle <mlyle@lyle.org>
Cc: Junhui Tang <tang.junhui@zte.com.cn>
Cc: Michael Lyle <mlyle@lyle.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'drivers/md/bcache/writeback.c')
| -rw-r--r-- | drivers/md/bcache/writeback.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/md/bcache/writeback.c b/drivers/md/bcache/writeback.c index 70092ada68e6..4a9547cdcdc5 100644 --- a/drivers/md/bcache/writeback.c +++ b/drivers/md/bcache/writeback.c @@ -289,6 +289,7 @@ static void write_dirty(struct closure *cl) bio_set_dev(&io->bio, io->dc->bdev); io->bio.bi_end_io = dirty_endio; + /* I/O request sent to backing device */ closure_bio_submit(io->dc->disk.c, &io->bio, cl); } |