linux-ext4 - [PATCH 09/50] fs: hold an i_obj_count reference while on the sb inode list

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Message-ID: <000670325134458514c4600218ddce0243060378.1755806649.git.josef@toxicpanda.com>
Date: Thu, 21 Aug 2025 16:18:20 -0400
From: Josef Bacik <josef@...icpanda.com>
To: linux-fsdevel@...r.kernel.org,
	linux-btrfs@...r.kernel.org,
	kernel-team@...com,
	linux-ext4@...r.kernel.org,
	linux-xfs@...r.kernel.org,
	brauner@...nel.org,
	viro@...IV.linux.org.uk
Subject: [PATCH 09/50] fs: hold an i_obj_count reference while on the sb inode list

We are holding this inode on a sb list, make sure we're holding an
i_obj_count reference while it exists on the list.

Signed-off-by: Josef Bacik <josef@...icpanda.com>
---
 fs/inode.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/fs/inode.c b/fs/inode.c
index 7e506050a0bc..12e2e01aae0c 100644
--- a/fs/inode.c
+++ b/fs/inode.c
@@ -630,6 +630,7 @@ void inode_sb_list_add(struct inode *inode)
 {
 	struct super_block *sb = inode->i_sb;
 
+	iobj_get(inode);
 	spin_lock(&sb->s_inode_list_lock);
 	list_add(&inode->i_sb_list, &sb->s_inodes);
 	spin_unlock(&sb->s_inode_list_lock);
@@ -644,6 +645,7 @@ static inline void inode_sb_list_del(struct inode *inode)
 		spin_lock(&sb->s_inode_list_lock);
 		list_del_init(&inode->i_sb_list);
 		spin_unlock(&sb->s_inode_list_lock);
+		iobj_put(inode);
 	}
 }
 
-- 
2.49.0