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| author | Ingo Molnar <mingo@elte.hu> | 2010-08-02 08:29:56 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2010-08-02 08:31:54 +0200 |
| commit | 3772b734720e1a3f2dc1d95cfdfaa5332f4ccf01 (patch) | |
| tree | a1a8cc85948c086aa12a1d8014151a7ca7c04ea8 /mm | |
| parent | Merge branch 'perf/core' of git://git.kernel.org/pub/scm/linux/kernel/git/fre... (diff) | |
| parent | Linux 2.6.35 (diff) | |
| download | linux-3772b734720e1a3f2dc1d95cfdfaa5332f4ccf01.tar.xz linux-3772b734720e1a3f2dc1d95cfdfaa5332f4ccf01.zip | |
Merge commit 'v2.6.35' into perf/core
Conflicts:
tools/perf/Makefile
tools/perf/util/hist.c
Merge reason: Resolve the conflicts and update to latest upstream.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/memory.c | 16 |
1 files changed, 13 insertions, 3 deletions
diff --git a/mm/memory.c b/mm/memory.c index 119b7ccdf39b..bde42c6d3633 100644 --- a/mm/memory.c +++ b/mm/memory.c @@ -1394,10 +1394,20 @@ int __get_user_pages(struct task_struct *tsk, struct mm_struct *mm, return i ? : -EFAULT; } if (pages) { - struct page *page = vm_normal_page(gate_vma, start, *pte); + struct page *page; + + page = vm_normal_page(gate_vma, start, *pte); + if (!page) { + if (!(gup_flags & FOLL_DUMP) && + is_zero_pfn(pte_pfn(*pte))) + page = pte_page(*pte); + else { + pte_unmap(pte); + return i ? : -EFAULT; + } + } pages[i] = page; - if (page) - get_page(page); + get_page(page); } pte_unmap(pte); if (vmas) |