From 0c35bbadc59f5ed105c34471143eceb4c0dd9c95 Mon Sep 17 00:00:00 2001 From: Martin Hicks Date: Tue, 21 Jun 2005 17:14:42 -0700 Subject: [PATCH] VM: add __GFP_NORECLAIM When using the early zone reclaim, it was noticed that allocating new pages that should be spread across the whole system caused eviction of local pages. This adds a new GFP flag to prevent early reclaim from happening during certain allocation attempts. The example that is implemented here is for page cache pages. We want page cache pages to be spread across the whole system, and we don't want page cache pages to evict other pages to get local memory. Signed-off-by: Martin Hicks Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- mm/page_alloc.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'mm/page_alloc.c') diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 3c0f69ded6b5..a9da20bc2ed0 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -729,6 +729,8 @@ should_reclaim_zone(struct zone *z, unsigned int gfp_mask) { if (!z->reclaim_pages) return 0; + if (gfp_mask & __GFP_NORECLAIM) + return 0; return 1; } -- cgit v1.2.2