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authorChristoph Lameter <clameter@sgi.com>2006-09-25 23:31:40 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2006-09-26 08:48:50 -0700
commit9b819d204cf602eab1a53a9ec4b8d2ca51e02a1d (patch)
tree9442bf01a00a93a8ae54462fb4878588e1b2a6bf /mm/page_alloc.c
parent056c62418cc639bf2fe962c6a6ee56054b838bc7 (diff)
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[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 <clameter@sgi.com> Cc: Andy Whitcroft <apw@shadowen.org> Cc: Mel Gorman <mel@csn.ul.ie> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'mm/page_alloc.c')
-rw-r--r--mm/page_alloc.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 208a6b0..ea498788 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;