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[PATCH] mm: fix oom roll-back of __vmalloc_area_node

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__vunmap must not rely on area->nr_pages when picking the release methode
for area->pages.  It may be too small when __vmalloc_area_node failed early
due to lacking memory.  Instead, use a flag in vmstruct to differentiate.

Signed-off-by: Jan Kiszka <jan.kiszka@web.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Jan Kiszka 2006-07-14 00:23:56 -07:00 • committed by Linus Torvalds
parent e322fedf0c
commit 8757d5fa6b
2 changed files with 5 additions and 3 deletions
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include/linux/vmalloc.h
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@ -11,6 +11,7 @@ struct vm_area_struct;
#define VM_ALLOC 0x00000002 /* vmalloc() */
#define VM_MAP 0x00000004 /* vmap()ed pages */
#define VM_USERMAP 0x00000008 /* suitable for remap_vmalloc_range */
#define VM_VPAGES 0x00000010 /* buffer for pages was vmalloc'ed */
/* bits [20..32] reserved for arch specific ioremap internals */
/*