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Subject[PATCH] bcache: add cond_resched() in __bch_cache_cmp()
Date
From: Shile Zhang <shile.zhang@linux.alibaba.com>

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>
---
drivers/md/bcache/sysfs.c | 1 +
1 file changed, 1 insertion(+)

diff --git a/drivers/md/bcache/sysfs.c b/drivers/md/bcache/sysfs.c
index 557a8a3..028fea1 100644
--- a/drivers/md/bcache/sysfs.c
+++ b/drivers/md/bcache/sysfs.c
@@ -897,6 +897,7 @@ static void bch_cache_set_internal_release(struct kobject *k)

static int __bch_cache_cmp(const void *l, const void *r)
{
+ cond_resched();
return *((uint16_t *)r) - *((uint16_t *)l);
}

--
1.8.3.1
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