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bcache: add cond_resched() in __bch_cache_cmp()
author
Shile Zhang
<shile.zhang@linux.alibaba.com>
Tue, 3 Sep 2019 13:25:43 +0000
(21:25 +0800)
committer
Jens Axboe
<axboe@kernel.dk>
Tue, 3 Sep 2019 14:08:28 +0000
(08:08 -0600)
Read /sys/fs/bcache/<uuid>/cacheN/priority_stats can take very long
time with huge cache after long run.
Signed-off-by: Shile Zhang <shile.zhang@linux.alibaba.com>
Tested-by: Heitor Alves de Siqueira <halves@canonical.com>
Signed-off-by: Coly Li <colyli@suse.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
drivers/md/bcache/sysfs.c
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diff --git
a/drivers/md/bcache/sysfs.c
b/drivers/md/bcache/sysfs.c
index
9f08267
..
6b29e34
100644
(file)
--- a/
drivers/md/bcache/sysfs.c
+++ b/
drivers/md/bcache/sysfs.c
@@
-960,6
+960,7
@@
KTYPE(bch_cache_set_internal);
static int __bch_cache_cmp(const void *l, const void *r)
{
+ cond_resched();
return *((uint16_t *)r) - *((uint16_t *)l);
}