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Subject[-mm][PATCH 3/10] fix munlock page table walk - now requires 'mm'

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From: Lee Schermerhorn <lee.schermerhorn@hp.com>

Against 2.6.26-rc5-mm3.

Initialize the 'mm' member of the mm_walk structure, else the
page table walk doesn't occur, and mlocked pages will not be
munlocked. This is visible in the vmstats:

noreclaim_pgs_munlocked - should equal noreclaim_pgs_mlocked
less (nr_mlock + noreclaim_pgs_cleared), but is always zero
[munlock_vma_page() never called]

noreclaim_pgs_mlockfreed - should be zero [for debug only],
but == noreclaim_pgs_mlocked - (nr_mlock + noreclaim_pgs_cleared)


Signed-off-by: Lee Schermerhorn <lee.schermerhorn@hp.com>
Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>

mm/mlock.c | 1 +
1 file changed, 1 insertion(+)
Index: b/mm/mlock.c
===================================================================
--- a/mm/mlock.c
+++ b/mm/mlock.c
@@ -301,6 +301,7 @@ static void __munlock_vma_pages_range(st
.pmd_entry = __munlock_pmd_handler,
.pte_entry = __munlock_pte_handler,
.private = &mpw,
+ .mm = mm,
};

VM_BUG_ON(start & ~PAGE_MASK || end & ~PAGE_MASK);



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