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authorHugh Dickins <hugh@veritas.com>2005-09-03 15:54:43 -0700
committerLinus Torvalds <torvalds@evo.osdl.org>2005-09-05 00:05:42 -0700
commit839b9685e80592809d6dfdd865986cd1b5ddc2fb (patch)
tree9c46cc93d8467035419028e6e47f25a547e6ad9a
parent3279ffd97f1b3962e40d3c5f09495ef8320b180b (diff)
downloadlinux-sh-839b9685e80592809d6dfdd865986cd1b5ddc2fb.tar.gz
[PATCH] rmap: don't test rss
Remove the three get_mm_counter(mm, rss) tests from rmap.c: there was a time when testing rss was important to avoid a particular race between dup_mmap and the anonmm rmap; but now it's just a rather silly pseudo- optimization, made even more obscure by the get_mm_counter macro. Signed-off-by: Hugh Dickins <hugh@veritas.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
-rw-r--r--mm/rmap.c7
1 files changed, 1 insertions, 6 deletions
diff --git a/mm/rmap.c b/mm/rmap.c
index facb8cdca665..28c6cf96d3c4 100644
--- a/mm/rmap.c
+++ b/mm/rmap.c
@@ -289,8 +289,6 @@ static int page_referenced_one(struct page *page,
pte_t *pte;
int referenced = 0;
- if (!get_mm_counter(mm, rss))
- goto out;
address = vma_address(page, vma);
if (address == -EFAULT)
goto out;
@@ -517,8 +515,6 @@ static int try_to_unmap_one(struct page *page, struct vm_area_struct *vma)
pte_t pteval;
int ret = SWAP_AGAIN;
- if (!get_mm_counter(mm, rss))
- goto out;
address = vma_address(page, vma);
if (address == -EFAULT)
goto out;
@@ -766,8 +762,7 @@ static int try_to_unmap_file(struct page *page)
if (vma->vm_flags & (VM_LOCKED|VM_RESERVED))
continue;
cursor = (unsigned long) vma->vm_private_data;
- while (get_mm_counter(vma->vm_mm, rss) &&
- cursor < max_nl_cursor &&
+ while ( cursor < max_nl_cursor &&
cursor < vma->vm_end - vma->vm_start) {
try_to_unmap_cluster(cursor, &mapcount, vma);
cursor += CLUSTER_SIZE;