diff options
| author |   Nate Diller <nate.diller@gmail.com> | 2007-05-16 22:11:17 -0700 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-05-17 05:23:05 -0700 |
| commit | c9f2875b7968453a852e1de5d3504fd2241e8989 (patch) | |
| tree | 0312f11b57164afd57bc0dfbd0e652ded1542cef /fs/ecryptfs | |
| parent | make sysctl/kernel/core_pattern and fs/exec.c agree on maximum core filename size (diff) | |
| download | linux-dev-c9f2875b7968453a852e1de5d3504fd2241e8989.tar.xz linux-dev-c9f2875b7968453a852e1de5d3504fd2241e8989.zip | |
ecryptfs: use zero_user_page
Use zero_user_page() instead of open-coding it.
Signed-off-by: Nate Diller <nate.diller@gmail.com>
Cc: Michael Halcrow <mhalcrow@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/ecryptfs')
| -rw-r--r-- | fs/ecryptfs/mmap.c | 14 |
1 files changed, 3 insertions, 11 deletions
diff --git a/fs/ecryptfs/mmap.c b/fs/ecryptfs/mmap.c index 0770c4b66f53..88ea6697908f 100644 --- a/fs/ecryptfs/mmap.c +++ b/fs/ecryptfs/mmap.c @@ -364,18 +364,14 @@ static int fill_zeros_to_end_of_page(struct page *page, unsigned int to) { struct inode *inode = page->mapping->host; int end_byte_in_page; - char *page_virt; if ((i_size_read(inode) / PAGE_CACHE_SIZE) != page->index) goto out; end_byte_in_page = i_size_read(inode) % PAGE_CACHE_SIZE; if (to > end_byte_in_page) end_byte_in_page = to; - page_virt = kmap_atomic(page, KM_USER0); - memset((page_virt + end_byte_in_page), 0, - (PAGE_CACHE_SIZE - end_byte_in_page)); - kunmap_atomic(page_virt, KM_USER0); - flush_dcache_page(page); + zero_user_page(page, end_byte_in_page, + PAGE_CACHE_SIZE - end_byte_in_page, KM_USER0); out: return 0; } @@ -740,7 +736,6 @@ int write_zeros(struct file *file, pgoff_t index, int start, int num_zeros) { int rc = 0; struct page *tmp_page; - char *tmp_page_virt; tmp_page = ecryptfs_get1page(file, index); if (IS_ERR(tmp_page)) { @@ -757,10 +752,7 @@ int write_zeros(struct file *file, pgoff_t index, int start, int num_zeros) page_cache_release(tmp_page); goto out; } - tmp_page_virt = kmap_atomic(tmp_page, KM_USER0); - memset(((char *)tmp_page_virt + start), 0, num_zeros); - kunmap_atomic(tmp_page_virt, KM_USER0); - flush_dcache_page(tmp_page); + zero_user_page(tmp_page, start, num_zeros, KM_USER0); rc = ecryptfs_commit_write(file, tmp_page, start, start + num_zeros); if (rc < 0) { ecryptfs_printk(KERN_ERR, "Error attempting to write zero's " |