fs: icache RCU free inodes

[firefly-linux-kernel-4.4.55.git] / fs / ext4 / super.c

diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index fb15c9c0be74d5c06ba421f04449d981a69337ed..cd37f9d5e447f7c3fbc578dbddc8c988d435e6be 100644 (file)
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -841,6 +841,13 @@ static int ext4_drop_inode(struct inode *inode)
        return drop;
 }
 
+static void ext4_i_callback(struct rcu_head *head)
+{
+       struct inode *inode = container_of(head, struct inode, i_rcu);
+       INIT_LIST_HEAD(&inode->i_dentry);
+       kmem_cache_free(ext4_inode_cachep, EXT4_I(inode));
+}
+
 static void ext4_destroy_inode(struct inode *inode)
 {
        ext4_ioend_wait(inode);
@@ -853,7 +860,7 @@ static void ext4_destroy_inode(struct inode *inode)
                                true);
                dump_stack();
        }
-       kmem_cache_free(ext4_inode_cachep, EXT4_I(inode));
+       call_rcu(&inode->i_rcu, ext4_i_callback);
 }
 
 static void init_once(void *foo)