Title: [8569] branches/2009R1/mm/page_alloc.c: Fix bug[#5968] Do drop_pagecache() after try_to_free_pages() for NOMMU.
- Revision
- 8569
- Author
- sonicz
- Date
- 2010-03-29 07:10:16 -0400 (Mon, 29 Mar 2010)
Log Message
Fix bug[#5968] Do drop_pagecache() after try_to_free_pages() for NOMMU.
Doing drop_pagecache earlier sometimes leads to try_to_free_pages()
retturn 0 endlessly with __GFP_FS not set in gfp_mask.
Modified Paths
Diff
Modified: branches/2009R1/mm/page_alloc.c (8568 => 8569)
--- branches/2009R1/mm/page_alloc.c 2010-03-29 11:09:38 UTC (rev 8568)
+++ branches/2009R1/mm/page_alloc.c 2010-03-29 11:10:16 UTC (rev 8569)
@@ -1543,10 +1543,6 @@
if (page)
goto got_pg;
-#ifndef CONFIG_MMU
- drop_pagecache();
-#endif
-
/* This allocation should allow future memory freeing. */
rebalance:
@@ -1585,6 +1581,10 @@
did_some_progress = try_to_free_pages(zonelist, order, gfp_mask);
+#ifndef CONFIG_MMU
+ drop_pagecache();
+#endif
+
p->reclaim_state = NULL;
p->flags &= ~PF_MEMALLOC;
@@ -1646,9 +1646,6 @@
pages_reclaimed += did_some_progress;
do_retry = 0;
if (!(gfp_mask & __GFP_NORETRY)) {
-#ifndef CONFIG_MMU
- drop_pagecache();
-#endif
if (order <= PAGE_ALLOC_COSTLY_ORDER) {
do_retry = 1;
} else {
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