orangefs: Use RCU for destroy_inode

freeing of inodes must be RCU-delayed on all filesystems

Cc: stable@vger.kernel.org
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

diff --git a/fs/orangefs/super.c b/fs/orangefs/super.c
index c48859f..67c2435 100644 (file)
--- a/fs/orangefs/super.c
+++ b/fs/orangefs/super.c
@@ -115,6 +115,13 @@ static struct inode *orangefs_alloc_inode(struct super_block *sb)
        return &orangefs_inode->vfs_inode;
 }
 
+static void orangefs_i_callback(struct rcu_head *head)
+{
+       struct inode *inode = container_of(head, struct inode, i_rcu);
+       struct orangefs_inode_s *orangefs_inode = ORANGEFS_I(inode);
+       kmem_cache_free(orangefs_inode_cache, orangefs_inode);
+}
+
 static void orangefs_destroy_inode(struct inode *inode)
 {
        struct orangefs_inode_s *orangefs_inode = ORANGEFS_I(inode);
@@ -123,7 +130,7 @@ static void orangefs_destroy_inode(struct inode *inode)
                        "%s: deallocated %p destroying inode %pU\n",
                        __func__, orangefs_inode, get_khandle_from_ino(inode));
 
-       kmem_cache_free(orangefs_inode_cache, orangefs_inode);
+       call_rcu(&inode->i_rcu, orangefs_i_callback);
 }
 
 /*