Messages in this thread Patch in this message | | | From | KOSAKI Motohiro <> | Subject | [PATCH 3/7] vmscan: synchrounous lumpy reclaim use lock_page() instead trylock_page() | Date | Thu, 5 Aug 2010 15:13:39 +0900 (JST) |
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When synchrounous lumpy reclaim, there is no reason to give up to reclaim pages even if page is locked. We use lock_page() instead trylock_page() in this case.
Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> --- mm/vmscan.c | 4 +++- 1 files changed, 3 insertions(+), 1 deletions(-)
diff --git a/mm/vmscan.c b/mm/vmscan.c index 1cdc3db..833b6ad 100644 --- a/mm/vmscan.c +++ b/mm/vmscan.c @@ -665,7 +665,9 @@ static unsigned long shrink_page_list(struct list_head *page_list, page = lru_to_page(page_list); list_del(&page->lru); - if (!trylock_page(page)) + if (sync_writeback == PAGEOUT_IO_SYNC) + lock_page(page); + else if (!trylock_page(page)) goto keep; VM_BUG_ON(PageActive(page)); -- 1.6.5.2
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