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OpenCloudOS-Kernel
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cramfs: get rid of ->put_super() 

failure exits are simpler that way

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2013-12-10 16:35:14 -05:00
parent 842a859db2
commit 2309fb8ef4
1 changed files with 12 additions and 16 deletions
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28
fs/cramfs/inode.c
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@ -219,10 +219,11 @@ static void *cramfs_read(struct super_block *sb, unsigned int offset, unsigned i
return read_buffers[buffer] + offset;
}
static void cramfs_put_super(struct super_block *sb)
static void cramfs_kill_sb(struct super_block *sb)
{
kfree(sb->s_fs_info);
sb->s_fs_info = NULL;
struct cramfs_sb_info *sbi = sb->s_fs_info;
kill_block_super(sb);
kfree(sbi);
}
static int cramfs_remount(struct super_block *sb, int *flags, char *data)
@ -261,7 +262,7 @@ static int cramfs_fill_super(struct super_block *sb, void *data, int silent)
if (super.magic == CRAMFS_MAGIC_WEND) {
if (!silent)
printk(KERN_ERR "cramfs: wrong endianness\n");
goto out;
return -EINVAL;
}
/* check at 512 byte offset */
@ -273,20 +274,20 @@ static int cramfs_fill_super(struct super_block *sb, void *data, int silent)
printk(KERN_ERR "cramfs: wrong endianness\n");
else if (!silent)
printk(KERN_ERR "cramfs: wrong magic\n");
goto out;
return -EINVAL;
}
}
/* get feature flags first */
if (super.flags & ~CRAMFS_SUPPORTED_FLAGS) {
printk(KERN_ERR "cramfs: unsupported filesystem features\n");
goto out;
return -EINVAL;
}
/* Check that the root inode is in a sane state */
if (!S_ISDIR(super.root.mode)) {
printk(KERN_ERR "cramfs: root is not a directory\n");
goto out;
return -EINVAL;
}
/* correct strange, hard-coded permissions of mkcramfs */
super.root.mode |= (S_IRUSR | S_IXUSR | S_IRGRP | S_IXGRP | S_IROTH | S_IXOTH);
@ -310,22 +311,18 @@ static int cramfs_fill_super(struct super_block *sb, void *data, int silent)
(root_offset != 512 + sizeof(struct cramfs_super))))
{
printk(KERN_ERR "cramfs: bad root offset %lu\n", root_offset);
goto out;
return -EINVAL;
}
/* Set it all up.. */
sb->s_op = &cramfs_ops;
root = get_cramfs_inode(sb, &super.root, 0);
if (IS_ERR(root))
goto out;
return PTR_ERR(root);
sb->s_root = d_make_root(root);
if (!sb->s_root)
goto out;
return -ENOMEM;
return 0;
out:
kfree(sbi);
sb->s_fs_info = NULL;
return -EINVAL;
}
static int cramfs_statfs(struct dentry *dentry, struct kstatfs *buf)
@ -550,7 +547,6 @@ static const struct inode_operations cramfs_dir_inode_operations = {
};
static const struct super_operations cramfs_ops = {
.put_super = cramfs_put_super,
.remount_fs = cramfs_remount,
.statfs = cramfs_statfs,
};
@ -565,7 +561,7 @@ static struct file_system_type cramfs_fs_type = {
.owner = THIS_MODULE,
.name = "cramfs",
.mount = cramfs_mount,
.kill_sb = kill_block_super,
.kill_sb = cramfs_kill_sb,
.fs_flags = FS_REQUIRES_DEV,
};
MODULE_ALIAS_FS("cramfs");