autofs4: reorganize expire pending wait function calls

[linux-2.6-omap-h63xx.git] / fs / autofs4 / expire.c

diff --git a/fs/autofs4/expire.c b/fs/autofs4/expire.c
index 705b9f057fb3b2ca35ad3e57ab57e5579fa067aa..cdabb796ff018aa65eb20c4d6ec034613ab8e1c8 100644 (file)
--- a/fs/autofs4/expire.c
+++ b/fs/autofs4/expire.c
@@ -402,6 +402,35 @@ found:
        return expired;
 }
 
+int autofs4_expire_wait(struct dentry *dentry)
+{
+       struct autofs_sb_info *sbi = autofs4_sbi(dentry->d_sb);
+       struct autofs_info *ino = autofs4_dentry_ino(dentry);
+       int status;
+
+       /* Block on any pending expire */
+       spin_lock(&sbi->fs_lock);
+       if (ino->flags & AUTOFS_INF_EXPIRING) {
+               spin_unlock(&sbi->fs_lock);
+
+               DPRINTK("waiting for expire %p name=%.*s",
+                        dentry, dentry->d_name.len, dentry->d_name.name);
+
+               status = autofs4_wait(sbi, dentry, NFY_NONE);
+               wait_for_completion(&ino->expire_complete);
+
+               DPRINTK("expire done status=%d", status);
+
+               if (d_unhashed(dentry))
+                       return -EAGAIN;
+
+               return status;
+       }
+       spin_unlock(&sbi->fs_lock);
+
+       return 0;
+}
+
 /* Perform an expiry operation */
 int autofs4_expire_run(struct super_block *sb,
                      struct vfsmount *mnt,