[PATCH v3 05/21] shrink_dentry_list(): no need to check that dentry refcount is marked dead

[Al Viro]

... we won't see DCACHE_MAY_FREE on anything that is *not* dead
and checking d_flags is just as cheap as checking refcount.

Reviewed-by: Christian Brauner <brauner@xxxxxxxxxx>
Signed-off-by: Al Viro <viro@xxxxxxxxxxxxxxxxxx>
---
 fs/dcache.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/fs/dcache.c b/fs/dcache.c
index bb862a304e1b..c1025921f8d3 100644
--- a/fs/dcache.c
+++ b/fs/dcache.c
@@ -1191,11 +1191,10 @@ void shrink_dentry_list(struct list_head *list)
 		spin_lock(&dentry->d_lock);
 		rcu_read_lock();
 		if (!shrink_lock_dentry(dentry)) {
-			bool can_free = false;
+			bool can_free;
 			rcu_read_unlock();
 			d_shrink_del(dentry);
-			if (dentry->d_lockref.count < 0)
-				can_free = dentry->d_flags & DCACHE_MAY_FREE;
+			can_free = dentry->d_flags & DCACHE_MAY_FREE;
 			spin_unlock(&dentry->d_lock);
 			if (can_free)
 				dentry_free(dentry);
-- 
2.39.2