diff options
Diffstat (limited to 'fs/sysfs/mount.c')
-rw-r--r-- | fs/sysfs/mount.c | 38 |
1 files changed, 15 insertions, 23 deletions
diff --git a/fs/sysfs/mount.c b/fs/sysfs/mount.c index 00ab9125d39..fbc7b65fe26 100644 --- a/fs/sysfs/mount.c +++ b/fs/sysfs/mount.c @@ -19,28 +19,18 @@ struct vfsmount *sysfs_mount; struct super_block * sysfs_sb = NULL; struct kmem_cache *sysfs_dir_cachep; -static void sysfs_clear_inode(struct inode *inode); - static const struct super_operations sysfs_ops = { .statfs = simple_statfs, .drop_inode = sysfs_delete_inode, - .clear_inode = sysfs_clear_inode, }; -static struct sysfs_dirent sysfs_root = { - .s_sibling = LIST_HEAD_INIT(sysfs_root.s_sibling), - .s_children = LIST_HEAD_INIT(sysfs_root.s_children), - .s_element = NULL, - .s_type = SYSFS_ROOT, - .s_iattr = NULL, +struct sysfs_dirent sysfs_root = { + .s_count = ATOMIC_INIT(1), + .s_flags = SYSFS_ROOT, + .s_mode = S_IFDIR | S_IRWXU | S_IRUGO | S_IXUGO, .s_ino = 1, }; -static void sysfs_clear_inode(struct inode *inode) -{ - kfree(inode->i_private); -} - static int sysfs_fill_super(struct super_block *sb, void *data, int silent) { struct inode *inode; @@ -53,24 +43,26 @@ static int sysfs_fill_super(struct super_block *sb, void *data, int silent) sb->s_time_gran = 1; sysfs_sb = sb; - inode = sysfs_new_inode(S_IFDIR | S_IRWXU | S_IRUGO | S_IXUGO, - &sysfs_root); - if (inode) { - inode->i_op = &sysfs_dir_inode_operations; - inode->i_fop = &sysfs_dir_operations; - /* directory inodes start off with i_nlink == 2 (for "." entry) */ - inc_nlink(inode); - } else { + /* get root inode, initialize and unlock it */ + inode = sysfs_get_inode(&sysfs_root); + if (!inode) { pr_debug("sysfs: could not get root inode\n"); return -ENOMEM; } + inode->i_op = &sysfs_dir_inode_operations; + inode->i_fop = &sysfs_dir_operations; + inc_nlink(inode); /* directory, account for "." */ + unlock_new_inode(inode); + + /* instantiate and link root dentry */ root = d_alloc_root(inode); if (!root) { pr_debug("%s: could not get root dentry!\n",__FUNCTION__); iput(inode); return -ENOMEM; } + sysfs_root.s_dentry = root; root->d_fsdata = &sysfs_root; sb->s_root = root; return 0; @@ -94,7 +86,7 @@ int __init sysfs_init(void) sysfs_dir_cachep = kmem_cache_create("sysfs_dir_cache", sizeof(struct sysfs_dirent), - 0, 0, NULL, NULL); + 0, 0, NULL); if (!sysfs_dir_cachep) goto out; |