path: root/mm
diff options
authorNick Piggin <nickpiggin@yahoo.com.au>2005-09-03 15:54:46 -0700
committerLinus Torvalds <torvalds@evo.osdl.org>2005-09-05 00:05:43 -0700
commitc3dce2d89c269d5373a120d4a22fc2426ec992b0 (patch)
treed4a52e35751484935a15f3b95e84bd28d6662b18 /mm
parent6e21c8f145f5052c1c2fb4a4b41bee01c848159b (diff)
[PATCH] mm: comment rmap
Just be clear that VM_RESERVED pages here are a bug, and the test is not there because they are expected. Signed-off-by: Nick Piggin <npiggin@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'mm')
1 files changed, 2 insertions, 0 deletions
diff --git a/mm/rmap.c b/mm/rmap.c
index 28c6cf96d3c..f5a6966b7eb 100644
--- a/mm/rmap.c
+++ b/mm/rmap.c
@@ -527,6 +527,8 @@ static int try_to_unmap_one(struct page *page, struct vm_area_struct *vma)
* If the page is mlock()d, we cannot swap it out.
* If it's recently referenced (perhaps page_referenced
* skipped over this mm) then we should reactivate it.
+ *
+ * Pages belonging to VM_RESERVED regions should not happen here.
if ((vma->vm_flags & (VM_LOCKED|VM_RESERVED)) ||
ptep_clear_flush_young(vma, address, pte)) {