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blk-iolatency: fix blkg leak in timer_fn

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At this point we have a ref on the blkg, we need to drop it if we don't
have a iolat.

Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Josef Bacik 2018-07-31 12:39:02 -04:00 committed by Jens Axboe
parent 4725549192
commit 52a1199ccd
1 changed files with 1 additions and 1 deletions
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2
block/blk-iolatency.c
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@ -627,7 +627,7 @@ static void blkiolatency_timer_fn(struct timer_list *t)
iolat = blkg_to_lat(blkg);
if (!iolat)
continue;
goto next;
lat_info = &iolat->child_lat;
cookie = atomic_read(&lat_info->scale_cookie);