[PATCH] Prepare for __copy_from_user_inatomic to not zero missed bytes

[deliverable/linux.git] / mm / filemap.c

diff --git a/mm/filemap.c b/mm/filemap.c
index 807a463fd5ed69b1d39d5268dddf92464c81ed0f..1ed4be2a7654084743042058e6c9715aa80880b6 100644 (file)
--- a/mm/filemap.c
+++ b/mm/filemap.c
@@ -1892,7 +1892,7 @@ int remove_suid(struct dentry *dentry)
 EXPORT_SYMBOL(remove_suid);
 
 size_t
-__filemap_copy_from_user_iovec(char *vaddr, 
+__filemap_copy_from_user_iovec_inatomic(char *vaddr,
                        const struct iovec *iov, size_t base, size_t bytes)
 {
        size_t copied = 0, left = 0;
@@ -1908,12 +1908,8 @@ __filemap_copy_from_user_iovec(char *vaddr,
                vaddr += copy;
                iov++;
 
-               if (unlikely(left)) {
-                       /* zero the rest of the target like __copy_from_user */
-                       if (bytes)
-                               memset(vaddr, 0, bytes);
+               if (unlikely(left))
                        break;
-               }
        }
        return copied - left;
 }