affs: use zero_user_page

Use zero_user_page() instead of open-coding it.

Signed-off-by: Nate Diller <nate.diller@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 1 insertions, 5 deletions

diff --git a/fs/affs/file.c b/fs/affs/file.c
index 4aa8079e71be..c8796906f584 100644
--- a/fs/affs/file.c
+++ b/fs/affs/file.c
@@ -628,11 +628,7 @@ static int affs_prepare_write_ofs(struct file *file, struct page *page, unsigned
                         return err;
         }
         if (to < PAGE_CACHE_SIZE) {
-                char *kaddr = kmap_atomic(page, KM_USER0);
-
-                memset(kaddr + to, 0, PAGE_CACHE_SIZE - to);
-                flush_dcache_page(page);
-                kunmap_atomic(kaddr, KM_USER0);
+                zero_user_page(page, to, PAGE_CACHE_SIZE - to, KM_USER0);
                 if (size > offset + to) {
                         if (size < offset + PAGE_CACHE_SIZE)
                                 tmp = size & ~PAGE_CACHE_MASK;