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authorKOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>2010-03-05 13:41:43 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2010-03-06 11:26:24 -0800
commit06f9d8c2b50060543fb6e0af87ddb86e654dee6b (patch)
tree0e0f7687c58e0948334f238208529d65de165eea
parentc58267c32429ea6535428ca6b8a036892c1697f2 (diff)
downloadop-kernel-dev-06f9d8c2b50060543fb6e0af87ddb86e654dee6b.zip
op-kernel-dev-06f9d8c2b50060543fb6e0af87ddb86e654dee6b.tar.gz
mm: mlock_vma_pages_range() only return success or failure
Currently, mlock_vma_pages_range() only return len or 0. then current error handling of mmap_region() is meaningless complex. This patch makes simplify and makes consist with brk() code. Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Cc: Nick Piggin <npiggin@suse.de> Cc: Lee Schermerhorn <lee.schermerhorn@hp.com> Cc: Rik van Riel <riel@redhat.com> Cc: KAMEZAWA Hiroyuki <kamewzawa.hiroyu@jp.fujitsu.com> Cc: Hugh Dickins <hugh.dickins@tiscali.co.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-rw-r--r--mm/mmap.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/mm/mmap.c b/mm/mmap.c
index 7acd7b0..c646618 100644
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -1265,8 +1265,8 @@ out:
mm->total_vm += len >> PAGE_SHIFT;
vm_stat_account(mm, vm_flags, file, len >> PAGE_SHIFT);
if (vm_flags & VM_LOCKED) {
- long nr_pages = mlock_vma_pages_range(vma, addr, addr + len);
- mm->locked_vm += (len >> PAGE_SHIFT) - nr_pages;
+ if (!mlock_vma_pages_range(vma, addr, addr + len))
+ mm->locked_vm += (len >> PAGE_SHIFT);
} else if ((flags & MAP_POPULATE) && !(flags & MAP_NONBLOCK))
make_pages_present(addr, addr + len);
return addr;
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