4.19-stable review patch.  If anyone has any objections, please let me know.

------------------

[ Upstream commit 29b00e609960ae0fcff382f4c7079dd0874a5311 ]

When we made the shmem_reserve_inode call in shmem_link conditional, we
forgot to update the declaration for ret so that it always has a known
value.  Dan Carpenter pointed out this deficiency in the original patch.

Fixes: 1062af920c07 ("tmpfs: fix link accounting when a tmpfile is linked in")
Reported-by: Dan Carpenter <[email protected]>
Signed-off-by: Darrick J. Wong <[email protected]>
Signed-off-by: Hugh Dickins <[email protected]>
Cc: Matej Kupljen <[email protected]>
Cc: Al Viro <[email protected]>
Cc: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
Signed-off-by: Sasha Levin <[email protected]>
---
 mm/shmem.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mm/shmem.c b/mm/shmem.c
index bf13966b009c..3c8742655756 100644
--- a/mm/shmem.c
+++ b/mm/shmem.c
@@ -2895,7 +2895,7 @@ static int shmem_create(struct inode *dir, struct dentry 
*dentry, umode_t mode,
 static int shmem_link(struct dentry *old_dentry, struct inode *dir, struct 
dentry *dentry)
 {
        struct inode *inode = d_inode(old_dentry);
-       int ret;
+       int ret = 0;
 
        /*
         * No ordinary (disk based) filesystem counts links as inodes;
-- 
2.19.1



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