FS-Cache: Add missing initialization of ret in cachefiles_write_page()

fs/cachefiles/rdwr.c: In function ‘cachefiles_write_page’:
fs/cachefiles/rdwr.c:882: warning: ‘ret’ may be used uninitialized in
this function

If the jump to label "error" is taken, "ret" will indeed be
uninitialized, and random stack data may be printed by the debug code.

Fixes: 102f4d900c9c8f5e ("FS-Cache: Handle a write to the page immediately beyond the EOF marker")
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

diff --git a/fs/cachefiles/rdwr.c b/fs/cachefiles/rdwr.c
index 7a6b02f727874352d80a9fd34fa0355dda8a5cb1..c0f3da3926a0c6d4b8cf95e2c24a2a1ebd9d6655 100644 (file)
--- a/fs/cachefiles/rdwr.c
+++ b/fs/cachefiles/rdwr.c
@@ -879,7 +879,7 @@ int cachefiles_write_page(struct fscache_storage *op, struct page *page)
        loff_t pos, eof;
        size_t len;
        void *data;
-       int ret;
+       int ret = -ENOBUFS;
 
        ASSERT(op != NULL);
        ASSERT(page != NULL);