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-rw-r--r--fs/libfs.c11
1 files changed, 4 insertions, 7 deletions
diff --git a/fs/libfs.c b/fs/libfs.c
index 6e68b700958..5523bde9638 100644
--- a/fs/libfs.c
+++ b/fs/libfs.c
@@ -341,13 +341,10 @@ int simple_prepare_write(struct file *file, struct page *page,
unsigned from, unsigned to)
{
if (!PageUptodate(page)) {
- if (to - from != PAGE_CACHE_SIZE) {
- void *kaddr = kmap_atomic(page, KM_USER0);
- memset(kaddr, 0, from);
- memset(kaddr + to, 0, PAGE_CACHE_SIZE - to);
- flush_dcache_page(page);
- kunmap_atomic(kaddr, KM_USER0);
- }
+ if (to - from != PAGE_CACHE_SIZE)
+ zero_user_segments(page,
+ 0, from,
+ to, PAGE_CACHE_SIZE);
}
return 0;
}