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| author | Zhai Zhaoxuan <kxuanobj@gmail.com> | 2018-01-08 12:21:27 -0800 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2018-01-08 13:29:00 -0700 |
| commit | b40503ea4f5c134b16ef405cab6c08f9343a0d06 (patch) | |
| tree | 47101fd3dd2ccb93b13cf7389c00389f24e4a6b7 /drivers/md | |
| parent | ce439bf78b4850cadb1e67f0d4a48178d489c75d (diff) | |
| download | linux-b40503ea4f5c134b16ef405cab6c08f9343a0d06.tar.bz2 | |
bcache: fix unmatched generic_end_io_acct() & generic_start_io_acct()
The function cached_dev_make_request() and flash_dev_make_request() call
generic_start_io_acct() with (struct bcache_device)->disk when they start a
closure. Then the function bio_complete() calls generic_end_io_acct() with
(struct search)->orig_bio->bi_disk when the closure has done.
Since the `bi_disk` is not the bcache device, the generic_end_io_acct() is
called with a wrong device queue.
It causes the "inflight" (in struct hd_struct) counter keep increasing
without decreasing.
This patch fix the problem by calling generic_end_io_acct() with
(struct bcache_device)->disk.
Signed-off-by: Zhai Zhaoxuan <kxuanobj@gmail.com>
Reviewed-by: Michael Lyle <mlyle@lyle.org>
Reviewed-by: Coly Li <colyli@suse.de>
Reviewed-by: Tang Junhui <tang.junhui@zte.com.cn>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'drivers/md')
| -rw-r--r-- | drivers/md/bcache/request.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/md/bcache/request.c b/drivers/md/bcache/request.c index ddd941056f3c..1a46b41dac70 100644 --- a/drivers/md/bcache/request.c +++ b/drivers/md/bcache/request.c @@ -633,8 +633,8 @@ static void request_endio(struct bio *bio) static void bio_complete(struct search *s) { if (s->orig_bio) { - struct request_queue *q = s->orig_bio->bi_disk->queue; - generic_end_io_acct(q, bio_data_dir(s->orig_bio), + generic_end_io_acct(s->d->disk->queue, + bio_data_dir(s->orig_bio), &s->d->disk->part0, s->start_time); trace_bcache_request_end(s->d, s->orig_bio); |