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| author |   Shile Zhang <shile.zhang@linux.alibaba.com> | 2019-09-03 21:25:43 +0800 |
|---|---|---|
| committer |   Jens Axboe <axboe@kernel.dk> | 2019-09-03 08:08:28 -0600 |
| commit | d55a4ae9e1af5fb1657e38284ef46c56e668efdb (patch) | |
| tree | 3f1029185405a8724b71997a7b1b4f4356b7e8d5 /drivers/md/bcache | |
| parent | Documentation:kernel-per-CPU-kthreads.txt: Remove reference to elevator= (diff) | |
| download | linux-dev-d55a4ae9e1af5fb1657e38284ef46c56e668efdb.tar.xz linux-dev-d55a4ae9e1af5fb1657e38284ef46c56e668efdb.zip | |
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>
Diffstat (limited to 'drivers/md/bcache')
| -rw-r--r-- | drivers/md/bcache/sysfs.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/md/bcache/sysfs.c b/drivers/md/bcache/sysfs.c index 9f0826712845..6b29e34acf7a 100644 --- 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); } |