summaryrefslogtreecommitdiffstats
path: root/fs/super.c
diff options
context:
space:
mode:
Diffstat (limited to 'fs/super.c')
-rw-r--r--fs/super.c24
1 files changed, 21 insertions, 3 deletions
diff --git a/fs/super.c b/fs/super.c
index 47e554c12e7..3e7458c2bb7 100644
--- a/fs/super.c
+++ b/fs/super.c
@@ -221,6 +221,24 @@ static int grab_super(struct super_block *s) __releases(sb_lock)
}
/*
+ * Superblock locking. We really ought to get rid of these two.
+ */
+void lock_super(struct super_block * sb)
+{
+ get_fs_excl();
+ mutex_lock(&sb->s_lock);
+}
+
+void unlock_super(struct super_block * sb)
+{
+ put_fs_excl();
+ mutex_unlock(&sb->s_lock);
+}
+
+EXPORT_SYMBOL(lock_super);
+EXPORT_SYMBOL(unlock_super);
+
+/*
* Write out and wait upon all dirty data associated with this
* superblock. Filesystem data as well as the underlying block
* device. Takes the superblock lock. Requires a second blkdev
@@ -552,7 +570,7 @@ static void mark_files_ro(struct super_block *sb)
file_list_lock();
list_for_each_entry(f, &sb->s_files, f_u.fu_list) {
- if (S_ISREG(f->f_dentry->d_inode->i_mode) && file_count(f))
+ if (S_ISREG(f->f_path.dentry->d_inode->i_mode) && file_count(f))
f->f_mode &= ~FMODE_WRITE;
}
file_list_unlock();
@@ -735,9 +753,9 @@ int get_sb_bdev(struct file_system_type *fs_type,
* will protect the lockfs code from trying to start a snapshot
* while we are mounting
*/
- mutex_lock(&bdev->bd_mount_mutex);
+ down(&bdev->bd_mount_sem);
s = sget(fs_type, test_bdev_super, set_bdev_super, bdev);
- mutex_unlock(&bdev->bd_mount_mutex);
+ up(&bdev->bd_mount_sem);
if (IS_ERR(s))
goto error_s;