fedora core 6 1.2949 + vserver 2.2.0

[linux-2.6.git] / fs / autofs4 / inode.c

diff --git a/fs/autofs4/inode.c b/fs/autofs4/inode.c
index 5f6190d..e8f6c5a 100644 (file)
--- a/fs/autofs4/inode.c
+++ b/fs/autofs4/inode.c
@@ -19,6 +19,7 @@
 #include <linux/parser.h>
 #include <linux/bitops.h>
 #include <linux/smp_lock.h>
+#include <linux/magic.h>
 #include "autofs_i.h"
 #include <linux/module.h>
 
@@ -98,6 +99,9 @@ static void autofs4_force_release(struct autofs_sb_info *sbi)
        struct dentry *this_parent = sbi->sb->s_root;
        struct list_head *next;
 
+       if (!sbi->sb->s_root)
+               return;
+
        spin_lock(&dcache_lock);
 repeat:
        next = this_parent->d_subdirs.next;
@@ -145,6 +149,15 @@ void autofs4_kill_sb(struct super_block *sb)
 {
        struct autofs_sb_info *sbi = autofs4_sbi(sb);
 
+       /*
+        * In the event of a failure in get_sb_nodev the superblock
+        * info is not present so nothing else has been setup, so
+        * just call kill_anon_super when we are called from
+        * deactivate_super.
+        */
+       if (!sbi)
+               goto out_kill_sb;
+
        sb->s_fs_info = NULL;
 
        if ( !sbi->catatonic )
@@ -155,6 +168,7 @@ void autofs4_kill_sb(struct super_block *sb)
 
        kfree(sbi);
 
+out_kill_sb:
        DPRINTK("shutting down");
        kill_anon_super(sb);
 }
@@ -299,7 +313,7 @@ int autofs4_fill_super(struct super_block *s, void *data, int silent)
        struct autofs_sb_info *sbi;
        struct autofs_info *ino;
 
-       sbi = (struct autofs_sb_info *) kmalloc(sizeof(*sbi), GFP_KERNEL);
+       sbi = kmalloc(sizeof(*sbi), GFP_KERNEL);
        if ( !sbi )
                goto fail_unlock;
        DPRINTK("starting up, sbi = %p",sbi);
@@ -309,7 +323,8 @@ int autofs4_fill_super(struct super_block *s, void *data, int silent)
        s->s_fs_info = sbi;
        sbi->magic = AUTOFS_SBI_MAGIC;
        sbi->pipefd = -1;
-       sbi->catatonic = 0;
+       sbi->pipe = NULL;
+       sbi->catatonic = 1;
        sbi->exp_timeout = 0;
        sbi->oz_pgrp = process_group(current);
        sbi->sb = s;
@@ -387,6 +402,7 @@ int autofs4_fill_super(struct super_block *s, void *data, int silent)
                goto fail_fput;
        sbi->pipe = pipe;
        sbi->pipefd = pipefd;
+       sbi->catatonic = 0;
 
        /*
         * Success! Install the root dentry now to indicate completion.
@@ -411,6 +427,7 @@ fail_ino:
        kfree(ino);
 fail_free:
        kfree(sbi);
+       s->s_fs_info = NULL;
 fail_unlock:
        return -EINVAL;
 }