BackPup/Linux
1
0 Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-10-07 05:31:08 -04:00
Code Issues Packages Projects Releases Wiki Activity

oom: invoke oom killer for __GFP_NOFAIL

Browse Source 
The oom killer must be invoked regardless of the order if the allocation
is __GFP_NOFAIL, otherwise it will loop forever when reclaim fails to free
some memory.

Cc: Nick Piggin <[email protected]>
Acked-by: Rik van Riel <[email protected]>
Acked-by: Mel Gorman <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Christoph Lameter <[email protected]>
Cc: Dave Hansen <[email protected]>
Signed-off-by: David Rientjes <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
David Rientjes authored and Linus Torvalds committed 2009-06-16 19:47:43 -07:00
1 parent 4d8b9135c3
commit 82553a937f
1 file changed
+7 -5
Download Patch File Download Diff File Expand all files Collapse all files
mm/page_alloc.c
+7 -5
View File
@@ -1561,7 +1561,7 @@ __alloc_pages_may_oom(gfp_t gfp_mask, unsigned int order,
goto out;
/* The OOM killer will not help higher order allocs */
if (order > PAGE_ALLOC_COSTLY_ORDER)
if (order > PAGE_ALLOC_COSTLY_ORDER && !(gfp_mask & __GFP_NOFAIL))
goto out;
/* Exhausted what can be done so it's blamo time */
@@ -1781,11 +1781,13 @@ rebalance:
goto got_pg;
/*
* The OOM killer does not trigger for high-order allocations
* but if no progress is being made, there are no other
* options and retrying is unlikely to help
* The OOM killer does not trigger for high-order
* ~__GFP_NOFAIL allocations so if no progress is being
* made, there are no other options and retrying is
* unlikely to help.
*/
if (order > PAGE_ALLOC_COSTLY_ORDER)
if (order > PAGE_ALLOC_COSTLY_ORDER &&
!(gfp_mask & __GFP_NOFAIL))
goto nopage;
goto restart;