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| author | Hugh Dickins <hugh@veritas.com> | 2005-09-03 15:54:43 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@evo.osdl.org> | 2005-09-05 00:05:42 -0700 |
| commit | 839b9685e80592809d6dfdd865986cd1b5ddc2fb (patch) | |
| tree | 9c46cc93d8467035419028e6e47f25a547e6ad9a /mm/rmap.c | |
| parent | 3279ffd97f1b3962e40d3c5f09495ef8320b180b (diff) | |
| download | kernel_samsung_espresso10-839b9685e80592809d6dfdd865986cd1b5ddc2fb.zip kernel_samsung_espresso10-839b9685e80592809d6dfdd865986cd1b5ddc2fb.tar.gz kernel_samsung_espresso10-839b9685e80592809d6dfdd865986cd1b5ddc2fb.tar.bz2 | |
[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>
Diffstat (limited to 'mm/rmap.c')
| -rw-r--r-- | mm/rmap.c | 7 |
1 files changed, 1 insertions, 6 deletions
@@ -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; |