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| author | Ingo Molnar <mingo@elte.hu> | 2010-10-07 09:43:38 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2010-10-07 09:43:45 +0200 |
| commit | 556ef63255f1a6f82910a637c4164dbf7d3d1af2 (patch) | |
| tree | ae209fe4959e0837bf4eb72abc6e02c8a82179a1 /mm/memory.c | |
| parent | d4f8f217b8a5d5bd02af979650418dca4caec472 (diff) | |
| parent | cb655d0f3d57c23db51b981648e452988c0223f9 (diff) | |
| download | kernel_samsung_smdk4412-556ef63255f1a6f82910a637c4164dbf7d3d1af2.zip kernel_samsung_smdk4412-556ef63255f1a6f82910a637c4164dbf7d3d1af2.tar.gz kernel_samsung_smdk4412-556ef63255f1a6f82910a637c4164dbf7d3d1af2.tar.bz2 | |
Merge commit 'v2.6.36-rc7' into core/rcu
Merge reason: Update from -rc3 to -rc7.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'mm/memory.c')
| -rw-r--r-- | mm/memory.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/mm/memory.c b/mm/memory.c index 71b161b..0e18b4d 100644 --- a/mm/memory.c +++ b/mm/memory.c @@ -2680,10 +2680,12 @@ static int do_swap_page(struct mm_struct *mm, struct vm_area_struct *vma, delayacct_clear_flag(DELAYACCT_PF_SWAPIN); /* - * Make sure try_to_free_swap didn't release the swapcache - * from under us. The page pin isn't enough to prevent that. + * Make sure try_to_free_swap or reuse_swap_page or swapoff did not + * release the swapcache from under us. The page pin, and pte_same + * test below, are not enough to exclude that. Even if it is still + * swapcache, we need to check that the page's swap has not changed. */ - if (unlikely(!PageSwapCache(page))) + if (unlikely(!PageSwapCache(page) || page_private(page) != entry.val)) goto out_page; if (ksm_might_need_to_copy(page, vma, address)) { |