linux-ext4 - [PATCH 33/50] fs: stop checking I_FREEING in d_find_alias

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Message-ID: <782ee9ead6eddc1f96a0ab91b97dea577d20779f.1755806649.git.josef@toxicpanda.com>
Date: Thu, 21 Aug 2025 16:18:44 -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 33/50] fs: stop checking I_FREEING in d_find_alias_rcu

Instead of checking for I_FREEING, check the refcount of the inode to
see if it is alive.

Signed-off-by: Josef Bacik <josef@...icpanda.com>
---
 fs/dcache.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/fs/dcache.c b/fs/dcache.c
index 60046ae23d51..fa72a7922517 100644
--- a/fs/dcache.c
+++ b/fs/dcache.c
@@ -1072,8 +1072,8 @@ struct dentry *d_find_alias_rcu(struct inode *inode)
 
 	spin_lock(&inode->i_lock);
 	// ->i_dentry and ->i_rcu are colocated, but the latter won't be
-	// used without having I_FREEING set, which means no aliases left
-	if (likely(!(inode->i_state & I_FREEING) && !hlist_empty(l))) {
+	// used without having an i_count reference, which means no aliases left
+	if (likely(refcount_read(&inode->i_count) && !hlist_empty(l))) {
 		if (S_ISDIR(inode->i_mode)) {
 			de = hlist_entry(l->first, struct dentry, d_u.d_alias);
 		} else {
-- 
2.49.0