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| author | Sebastian Andrzej Siewior <bigeasy@linutronix.de> | 2018-08-17 15:46:08 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2018-08-17 16:20:29 -0700 |
| commit | 6ca342d020e8b8315d430d3a7d7c65daadfb4d8b (patch) | |
| tree | c51936e10cd1aa01bbcfa8eb3995146e7cb43bed | |
| parent | ae1e16da14b2bca94272c9f23c930be48994b2bb (diff) | |
| download | linux-6ca342d020e8b8315d430d3a7d7c65daadfb4d8b.tar.gz linux-6ca342d020e8b8315d430d3a7d7c65daadfb4d8b.tar.bz2 linux-6ca342d020e8b8315d430d3a7d7c65daadfb4d8b.zip | |
mm: workingset: make shadow_lru_isolate() use locking suffix
shadow_lru_isolate() disables interrupts and acquires a lock. It could
use spin_lock_irq() instead. It also uses local_irq_enable() while it
could use spin_unlock_irq()/xa_unlock_irq().
Use proper suffix for lock/unlock in order to enable/disable interrupts
during release/acquire of a lock.
Link: http://lkml.kernel.org/r/20180622151221.28167-3-bigeasy@linutronix.de
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Vladimir Davydov <vdavydov.dev@gmail.com>
Cc: Kirill Tkhai <ktkhai@virtuozzo.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | mm/workingset.c | 8 |
1 files changed, 3 insertions, 5 deletions
diff --git a/mm/workingset.c b/mm/workingset.c index ed8151180899..529480c21f93 100644 --- a/mm/workingset.c +++ b/mm/workingset.c @@ -431,7 +431,7 @@ static enum lru_status shadow_lru_isolate(struct list_head *item, /* Coming from the list, invert the lock order */ if (!xa_trylock(&mapping->i_pages)) { - spin_unlock(lru_lock); + spin_unlock_irq(lru_lock); ret = LRU_RETRY; goto out; } @@ -469,13 +469,11 @@ static enum lru_status shadow_lru_isolate(struct list_head *item, workingset_lookup_update(mapping)); out_invalid: - xa_unlock(&mapping->i_pages); + xa_unlock_irq(&mapping->i_pages); ret = LRU_REMOVED_RETRY; out: - local_irq_enable(); cond_resched(); - local_irq_disable(); - spin_lock(lru_lock); + spin_lock_irq(lru_lock); return ret; } |