autofs4: make freeing sbi rcu-delayed

[~andy/linux] / fs / autofs4 / autofs_i.h

diff --git a/fs/autofs4/autofs_i.h b/fs/autofs4/autofs_i.h
index 3f1128b37e462cd3ef65560137e2194fe816990e..4218e26df916245818272785203358b5cd8a130f 100644 (file)
--- a/fs/autofs4/autofs_i.h
+++ b/fs/autofs4/autofs_i.h
@@ -122,6 +122,7 @@ struct autofs_sb_info {
        spinlock_t lookup_lock;
        struct list_head active_list;
        struct list_head expiring_list;
+       struct rcu_head rcu;
 };
 
 static inline struct autofs_sb_info *autofs4_sbi(struct super_block *sb)
@@ -271,7 +272,7 @@ void autofs4_clean_ino(struct autofs_info *);
 
 static inline int autofs_prepare_pipe(struct file *pipe)
 {
-       if (!pipe->f_op || !pipe->f_op->write)
+       if (!pipe->f_op->write)
                return -EINVAL;
        if (!S_ISFIFO(file_inode(pipe)->i_mode))
                return -EINVAL;