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switch cgroup 

switching it to s_d_op allows to kill the cgroup_lookup() kludge.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2010-12-21 13:29:29 -05:00
parent af53d29ac1
commit 0df6a63f87
1 changed files with 7 additions and 23 deletions
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30
kernel/cgroup.c
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@ -763,8 +763,6 @@ EXPORT_SYMBOL_GPL(cgroup_unlock);
* -> cgroup_mkdir.
*/
static struct dentry *cgroup_lookup(struct inode *dir,
struct dentry *dentry, struct nameidata *nd);
static int cgroup_mkdir(struct inode *dir, struct dentry *dentry, int mode);
static int cgroup_rmdir(struct inode *unused_dir, struct dentry *dentry);
static int cgroup_populate_dir(struct cgroup *cgrp);
@ -1451,6 +1449,10 @@ static int cgroup_set_super(struct super_block *sb, void *data)
static int cgroup_get_rootdir(struct super_block *sb)
{
static const struct dentry_operations cgroup_dops = {
.d_iput = cgroup_diput,
};
struct inode *inode =
cgroup_new_inode(S_IFDIR | S_IRUGO | S_IXUGO | S_IWUSR, sb);
struct dentry *dentry;
@ -1468,6 +1470,8 @@ static int cgroup_get_rootdir(struct super_block *sb)
return -ENOMEM;
}
sb->s_root = dentry;
/* for everything else we want ->d_op set */
sb->s_d_op = &cgroup_dops;
return 0;
}
@ -2191,7 +2195,7 @@ static const struct file_operations cgroup_file_operations = {
};
static const struct inode_operations cgroup_dir_inode_operations = {
.lookup = cgroup_lookup,
.lookup = simple_lookup,
.mkdir = cgroup_mkdir,
.rmdir = cgroup_rmdir,
.rename = cgroup_rename,
@ -2207,26 +2211,6 @@ static inline struct cftype *__file_cft(struct file *file)
return __d_cft(file->f_dentry);
}
static int cgroup_delete_dentry(const struct dentry *dentry)
{
return 1;
}
static struct dentry *cgroup_lookup(struct inode *dir,
struct dentry *dentry, struct nameidata *nd)
{
static const struct dentry_operations cgroup_dentry_operations = {
.d_delete = cgroup_delete_dentry,
.d_iput = cgroup_diput,
};
if (dentry->d_name.len > NAME_MAX)
return ERR_PTR(-ENAMETOOLONG);
d_set_d_op(dentry, &cgroup_dentry_operations);
d_add(dentry, NULL);
return NULL;
}
static int cgroup_create_file(struct dentry *dentry, mode_t mode,
struct super_block *sb)
{