linux-kernel - [PATCH] f2fs: get parent inode when recovering pino

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Date:   Tue,  5 May 2020 08:31:39 -0700
From:   Jaegeuk Kim <jaegeuk@...nel.org>
To:     linux-kernel@...r.kernel.org,
        linux-f2fs-devel@...ts.sourceforge.net, kernel-team@...roid.com
Cc:     Jaegeuk Kim <jaegeuk@...nel.org>
Subject: [PATCH] f2fs: get parent inode when recovering pino

We had to grab the inode before retrieving i_ino.

Signed-off-by: Jaegeuk Kim <jaegeuk@...nel.org>
---
 fs/f2fs/file.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c
index a0a4413d6083b..9d4c3e3503567 100644
--- a/fs/f2fs/file.c
+++ b/fs/f2fs/file.c
@@ -168,6 +168,7 @@ static const struct vm_operations_struct f2fs_file_vm_ops = {
 static int get_parent_ino(struct inode *inode, nid_t *pino)
 {
 	struct dentry *dentry;
+	struct inode *parent;
 
 	inode = igrab(inode);
 	dentry = d_find_any_alias(inode);
@@ -175,8 +176,13 @@ static int get_parent_ino(struct inode *inode, nid_t *pino)
 	if (!dentry)
 		return 0;
 
-	*pino = parent_ino(dentry);
+	parent = igrab(d_inode(dentry->d_parent));
 	dput(dentry);
+	if (!parent)
+		return 0;
+
+	*pino = parent->i_ino;
+	iput(parent);
 	return 1;
 }
 
-- 
2.26.2.526.g744177e7f7-goog