diff options
| author | Alex Elder <aelder@sgi.com> | 2010-08-02 10:24:57 -0500 |
|---|---|---|
| committer | Alex Elder <aelder@sgi.com> | 2010-08-02 10:24:57 -0500 |
| commit | 6b0a2996a0c023d84bc27ec7528a6e54cb5ea264 (patch) | |
| tree | 9fa9a85d5d871b3cb3c28daf57d8ef8f05becd66 /mm/memory.c | |
| parent | 209fb87a259ead17e966627b7f053d16a96898da (diff) | |
| parent | 9fe6206f400646a2322096b56c59891d530e8d51 (diff) | |
Merge branch 'v2.6.35'
Diffstat (limited to 'mm/memory.c')
| -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 119b7ccdf39..bde42c6d363 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) |