Commit d55a4ae9 authored Sep 03, 2019 by Shile Zhang Committed by Jens Axboe Sep 03, 2019

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>

parent fa99165c

drivers/md/bcache/sysfs.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -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);
		}

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