diff options
| author |   Christoph Lameter <clameter@sgi.com> | 2006-06-25 05:46:49 -0700 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@g5.osdl.org> | 2006-06-25 10:00:55 -0700 |
| commit | e6a1530d692d6a60cdf15dfbcfea07f5324d7b9f (patch) | |
| tree | bb34a4d745eb7f7e8d3de40b171fac17822ee8ac /mm/rmap.c | |
| parent | [PATCH] page migration: Support a vma migration function (diff) | |
| download | linux-dev-e6a1530d692d6a60cdf15dfbcfea07f5324d7b9f.tar.xz linux-dev-e6a1530d692d6a60cdf15dfbcfea07f5324d7b9f.zip | |
[PATCH] Allow migration of mlocked pages
Hugh clarified the role of VM_LOCKED. So we can now implement page
migration for mlocked pages.
Allow the migration of mlocked pages. This means that try_to_unmap must
unmap mlocked pages in the migration case.
Signed-off-by: Christoph Lameter <clameter@sgi.com>
Acked-by: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'mm/rmap.c')
| -rw-r--r-- | mm/rmap.c | 9 |
1 files changed, 4 insertions, 5 deletions
diff --git a/mm/rmap.c b/mm/rmap.c index 882a85826bb2..e76909e880ca 100644 --- a/mm/rmap.c +++ b/mm/rmap.c @@ -562,9 +562,8 @@ static int try_to_unmap_one(struct page *page, struct vm_area_struct *vma, * If it's recently referenced (perhaps page_referenced * skipped over this mm) then we should reactivate it. */ - if ((vma->vm_flags & VM_LOCKED) || - (ptep_clear_flush_young(vma, address, pte) - && !migration)) { + if (!migration && ((vma->vm_flags & VM_LOCKED) || + (ptep_clear_flush_young(vma, address, pte)))) { ret = SWAP_FAIL; goto out_unmap; } @@ -771,7 +770,7 @@ static int try_to_unmap_file(struct page *page, int migration) list_for_each_entry(vma, &mapping->i_mmap_nonlinear, shared.vm_set.list) { - if (vma->vm_flags & VM_LOCKED) + if ((vma->vm_flags & VM_LOCKED) && !migration) continue; cursor = (unsigned long) vma->vm_private_data; if (cursor > max_nl_cursor) @@ -805,7 +804,7 @@ static int try_to_unmap_file(struct page *page, int migration) do { list_for_each_entry(vma, &mapping->i_mmap_nonlinear, shared.vm_set.list) { - if (vma->vm_flags & VM_LOCKED) + if ((vma->vm_flags & VM_LOCKED) && !migration) continue; cursor = (unsigned long) vma->vm_private_data; while ( cursor < max_nl_cursor && |