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authorAl Viro <viro@zeniv.linux.org.uk>2010-12-21 13:29:29 -0500
committerAl Viro <viro@zeniv.linux.org.uk>2011-01-12 20:02:47 -0500
commit0df6a63f8735a7c8a877878bc215d4312e41ef81 (patch)
tree93eb15c4408d86e16a6a96409670d16cf223e106
parentaf53d29ac13a97304d44343dc3b26154ca595268 (diff)
downloadlinux-0df6a63f8735a7c8a877878bc215d4312e41ef81.tar.bz2
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>
-rw-r--r--kernel/cgroup.c30
1 files changed, 7 insertions, 23 deletions
diff --git a/kernel/cgroup.c b/kernel/cgroup.c
index 51cddc11cd85..5c5f4cc2e99a 100644
--- a/kernel/cgroup.c
+++ b/kernel/cgroup.c
@@ -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)
{