diff options
| author | Andrew Morton <akpm@linux-foundation.org> | 2009-01-06 14:40:13 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-01-06 15:59:08 -0800 |
| commit | b555749aac87d7c2637f153e44bd77c7fdf4c65b (patch) | |
| tree | b65a437fd70795eac749f5dcf327151d458ec742 /mm/vmscan.c | |
| parent | 1e9e63650d6cb88e6d6d2ca6cc3ee276c26de4a3 (diff) | |
| download | lwn-b555749aac87d7c2637f153e44bd77c7fdf4c65b.tar.gz lwn-b555749aac87d7c2637f153e44bd77c7fdf4c65b.zip | |
vmscan: shrink_active_list(): reduce lru_lock hold time
These three statements manipulate local variables and do not need the lock
coverage.
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
Cc: Rik van Riel <riel@redhat.com
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/vmscan.c')
| -rw-r--r-- | mm/vmscan.c | 14 |
1 files changed, 7 insertions, 7 deletions
diff --git a/mm/vmscan.c b/mm/vmscan.c index 466a36b3bada..5daf606e0a35 100644 --- a/mm/vmscan.c +++ b/mm/vmscan.c @@ -1237,6 +1237,13 @@ static void shrink_active_list(unsigned long nr_pages, struct zone *zone, list_add(&page->lru, &l_inactive); } + /* + * Move the pages to the [file or anon] inactive list. + */ + pagevec_init(&pvec, 1); + pgmoved = 0; + lru = LRU_BASE + file * LRU_FILE; + spin_lock_irq(&zone->lru_lock); /* * Count referenced pages from currently used mappings as @@ -1247,13 +1254,6 @@ static void shrink_active_list(unsigned long nr_pages, struct zone *zone, if (scan_global_lru(sc)) zone->recent_rotated[!!file] += pgmoved; - /* - * Move the pages to the [file or anon] inactive list. - */ - pagevec_init(&pvec, 1); - - pgmoved = 0; - lru = LRU_BASE + file * LRU_FILE; while (!list_empty(&l_inactive)) { page = lru_to_page(&l_inactive); prefetchw_prev_lru_page(page, &l_inactive, flags); |