diff options
Diffstat (limited to 'fs/super.c')
| -rw-r--r-- | fs/super.c | 24 |
1 files changed, 21 insertions, 3 deletions
diff --git a/fs/super.c b/fs/super.c index 47e554c12e76..3e7458c2bb76 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; |