diff options
Diffstat (limited to 'fs/configfs/mount.c')
| -rw-r--r-- | fs/configfs/mount.c | 56 |
1 files changed, 30 insertions, 26 deletions
diff --git a/fs/configfs/mount.c b/fs/configfs/mount.c index cfd91320e869..4929f3431189 100644 --- a/fs/configfs/mount.c +++ b/fs/configfs/mount.c @@ -1,23 +1,7 @@ -/* -*- mode: c; c-basic-offset: 8; -*- - * vim: noexpandtab sw=8 ts=8 sts=0: - * +// SPDX-License-Identifier: GPL-2.0-or-later +/* * mount.c - operations for initializing and mounting configfs. * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public - * License as published by the Free Software Foundation; either - * version 2 of the License, or (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public - * License along with this program; if not, write to the - * Free Software Foundation, Inc., 59 Temple Place - Suite 330, - * Boston, MA 021110-1307, USA. - * * Based on sysfs: * sysfs is Copyright (C) 2001, 2002, 2003 Patrick Mochel * @@ -27,6 +11,7 @@ #include <linux/fs.h> #include <linux/module.h> #include <linux/mount.h> +#include <linux/fs_context.h> #include <linux/pagemap.h> #include <linux/init.h> #include <linux/slab.h> @@ -41,9 +26,18 @@ static struct vfsmount *configfs_mount = NULL; struct kmem_cache *configfs_dir_cachep; static int configfs_mnt_count = 0; + +static void configfs_free_inode(struct inode *inode) +{ + if (S_ISLNK(inode->i_mode)) + kfree(inode->i_link); + free_inode_nonrcu(inode); +} + static const struct super_operations configfs_ops = { .statfs = simple_statfs, - .drop_inode = generic_delete_inode, + .drop_inode = inode_just_drop, + .free_inode = configfs_free_inode, }; static struct config_group configfs_root_group = { @@ -66,7 +60,7 @@ static struct configfs_dirent configfs_root = { .s_iattr = NULL, }; -static int configfs_fill_super(struct super_block *sb, void *data, int silent) +static int configfs_fill_super(struct super_block *sb, struct fs_context *fc) { struct inode *inode; struct dentry *root; @@ -98,21 +92,31 @@ static int configfs_fill_super(struct super_block *sb, void *data, int silent) configfs_root_group.cg_item.ci_dentry = root; root->d_fsdata = &configfs_root; sb->s_root = root; - sb->s_d_op = &configfs_dentry_ops; /* the rest get that */ + set_default_d_op(sb, &configfs_dentry_ops); /* the rest get that */ + sb->s_d_flags |= DCACHE_DONTCACHE; return 0; } -static struct dentry *configfs_do_mount(struct file_system_type *fs_type, - int flags, const char *dev_name, void *data) +static int configfs_get_tree(struct fs_context *fc) { - return mount_single(fs_type, flags, data, configfs_fill_super); + return get_tree_single(fc, configfs_fill_super); +} + +static const struct fs_context_operations configfs_context_ops = { + .get_tree = configfs_get_tree, +}; + +static int configfs_init_fs_context(struct fs_context *fc) +{ + fc->ops = &configfs_context_ops; + return 0; } static struct file_system_type configfs_fs_type = { .owner = THIS_MODULE, .name = "configfs", - .mount = configfs_do_mount, - .kill_sb = kill_litter_super, + .init_fs_context = configfs_init_fs_context, + .kill_sb = kill_anon_super, }; MODULE_ALIAS_FS("configfs"); |