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| author | Christoph Lameter <clameter@engr.sgi.com> | 2007-03-05 00:30:33 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-03-05 07:57:51 -0800 |
| commit | 0dc952dc3e6d96d554a19fa7bee3f3b1d55e3cff (patch) | |
| tree | 1dcf2ff93784716143b7acef816888a71a9504c2 /mm/mempolicy.c | |
| parent | 1f2b69f9bdce8461341e5fb864568a2ee90079c8 (diff) | |
| download | lwn-0dc952dc3e6d96d554a19fa7bee3f3b1d55e3cff.tar.gz lwn-0dc952dc3e6d96d554a19fa7bee3f3b1d55e3cff.zip | |
[PATCH] Page migration: Fix vma flag checking
Currently we do not check for vma flags if sys_move_pages is called to move
individual pages. If sys_migrate_pages is called to move pages then we
check for vm_flags that indicate a non migratable vma but that still
includes VM_LOCKED and we can migrate mlocked pages.
Extract the vma_migratable check from mm/mempolicy.c, fix it and put it
into migrate.h so that is can be used from both locations.
Problem was spotted by Lee Schermerhorn
Signed-off-by: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Lee Schermerhorn <lee.schermerhorn@hp.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/mempolicy.c')
| -rw-r--r-- | mm/mempolicy.c | 9 |
1 files changed, 0 insertions, 9 deletions
diff --git a/mm/mempolicy.c b/mm/mempolicy.c index cf2a5381030a..d76e8eb342d0 100644 --- a/mm/mempolicy.c +++ b/mm/mempolicy.c @@ -321,15 +321,6 @@ static inline int check_pgd_range(struct vm_area_struct *vma, return 0; } -/* Check if a vma is migratable */ -static inline int vma_migratable(struct vm_area_struct *vma) -{ - if (vma->vm_flags & ( - VM_LOCKED|VM_IO|VM_HUGETLB|VM_PFNMAP|VM_RESERVED)) - return 0; - return 1; -} - /* * Check if all pages in a range are on a set of nodes. * If pagelist != NULL then isolate pages from the LRU and |