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| author | Libin <huawei.libin@huawei.com> | 2013-07-03 15:01:26 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-07-03 16:07:26 -0700 |
| commit | ef9f515a4c38c759c56c7d1e760cc243b6d516f4 (patch) | |
| tree | ea35e5d7f3202af53f990e8f5dc87ddfaac7e32c /fs/ncpfs | |
| parent | d6e932177090463e5c709e9e61bbd705a33a1609 (diff) | |
| download | linux-ef9f515a4c38c759c56c7d1e760cc243b6d516f4.tar.gz linux-ef9f515a4c38c759c56c7d1e760cc243b6d516f4.tar.bz2 linux-ef9f515a4c38c759c56c7d1e760cc243b6d516f4.zip | |
ncpfs: use vma_pages() to replace (vm_end - vm_start) >> PAGE_SHIFT
(*->vm_end - *->vm_start) >> PAGE_SHIFT operation is implemented
as a inline funcion vma_pages() in linux/mm.h, so using it.
Signed-off-by: Libin <huawei.libin@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/ncpfs')
| -rw-r--r-- | fs/ncpfs/mmap.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/ncpfs/mmap.c b/fs/ncpfs/mmap.c index ee24df5af1f9..3c5dd55d284c 100644 --- a/fs/ncpfs/mmap.c +++ b/fs/ncpfs/mmap.c @@ -117,7 +117,7 @@ int ncp_mmap(struct file *file, struct vm_area_struct *vma) return -EINVAL; /* we do not support files bigger than 4GB... We eventually supports just 4GB... */ - if (((vma->vm_end - vma->vm_start) >> PAGE_SHIFT) + vma->vm_pgoff + if (vma_pages(vma) + vma->vm_pgoff > (1U << (32 - PAGE_SHIFT))) return -EFBIG; |