From 9b819d204cf602eab1a53a9ec4b8d2ca51e02a1d Mon Sep 17 00:00:00 2001 From: Christoph Lameter Date: Mon, 25 Sep 2006 23:31:40 -0700 Subject: [PATCH] Add __GFP_THISNODE to avoid fallback to other nodes and ignore cpuset/memory policy restrictions Add a new gfp flag __GFP_THISNODE to avoid fallback to other nodes. This flag is essential if a kernel component requires memory to be located on a certain node. It will be needed for alloc_pages_node() to force allocation on the indicated node and for alloc_pages() to force allocation on the current node. Signed-off-by: Christoph Lameter Cc: Andy Whitcroft Cc: Mel Gorman Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- mm/page_alloc.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'mm/page_alloc.c') diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 208a6b03aa7..ea498788af5 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -893,6 +893,9 @@ get_page_from_freelist(gfp_t gfp_mask, unsigned int order, * See also cpuset_zone_allowed() comment in kernel/cpuset.c. */ do { + if (unlikely((gfp_mask & __GFP_THISNODE) && + (*z)->zone_pgdat != zonelist->zones[0]->zone_pgdat)) + break; if ((alloc_flags & ALLOC_CPUSET) && !cpuset_zone_allowed(*z, gfp_mask)) continue; -- cgit v1.2.3