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mm: mlock_vma_pages_range() only return success or failure

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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 <[email protected]>
Cc: Nick Piggin <[email protected]>
Cc: Lee Schermerhorn <[email protected]>
Cc: Rik van Riel <[email protected]>
Cc: KAMEZAWA Hiroyuki <[email protected]>
Cc: Hugh Dickins <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
KOSAKI Motohiro 2010-03-05 13:41:43 -08:00 • committed by Linus Torvalds
commit 06f9d8c2b5
1 changed files with 2 additions and 2 deletions
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4
mm/mmap.c
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@ -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;