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bcache: add cond_resched() in __bch_cache_cmp() 

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>
alistair/sunxi64-5.4-dsi
Shile Zhang 2019-09-03 21:25:43 +08:00 committed by Jens Axboe
parent fa99165cc8
commit d55a4ae9e1
1 changed files with 1 additions and 0 deletions
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drivers/md/bcache/sysfs.c
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@ -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);
}