[PATCH] f2fs: find a living dentry when finding parent ino

[Jaegeuk Kim]

We need to check any dentry still alive to get parent inode number.

Suggested-by: Eric Biggers <ebiggers@xxxxxxxxxx>
Signed-off-by: Jaegeuk Kim <jaegeuk@xxxxxxxxxx>
---
 fs/f2fs/file.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c
index a0a4413d6083b..95139cb85faca 100644
--- a/fs/f2fs/file.c
+++ b/fs/f2fs/file.c
@@ -169,9 +169,8 @@ static int get_parent_ino(struct inode *inode, nid_t *pino)
 {
 	struct dentry *dentry;
 
-	inode = igrab(inode);
-	dentry = d_find_any_alias(inode);
-	iput(inode);
+	/* Need to check if valid dentry still exists. */
+	dentry = d_find_alias(inode);
 	if (!dentry)
 		return 0;
 
-- 
2.26.2.526.g744177e7f7-goog