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convert cgroup and cpuset

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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2010-07-26 13:23:11 +04:00
parent ceefda6931
commit f7e835710a
2 changed files with 11 additions and 13 deletions
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11
kernel/cgroup.c
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@ -1460,9 +1460,9 @@ static int cgroup_get_rootdir(struct super_block *sb)
return 0;
}
static int cgroup_get_sb(struct file_system_type *fs_type,
static struct dentry *cgroup_mount(struct file_system_type *fs_type,
int flags, const char *unused_dev_name,
void *data, struct vfsmount *mnt)
void *data)
{
struct cgroup_sb_opts opts;
struct cgroupfs_root *root;
@ -1596,10 +1596,9 @@ static int cgroup_get_sb(struct file_system_type *fs_type,
drop_parsed_module_refcounts(opts.subsys_bits);
}
simple_set_mnt(mnt, sb);
kfree(opts.release_agent);
kfree(opts.name);
return 0;
return dget(sb->s_root);
drop_new_super:
deactivate_locked_super(sb);
@ -1608,7 +1607,7 @@ static int cgroup_get_sb(struct file_system_type *fs_type,
out_err:
kfree(opts.release_agent);
kfree(opts.name);
return ret;
return ERR_PTR(ret);
}
static void cgroup_kill_sb(struct super_block *sb) {
@ -1658,7 +1657,7 @@ static void cgroup_kill_sb(struct super_block *sb) {
static struct file_system_type cgroup_fs_type = {
.name = "cgroup",
.get_sb = cgroup_get_sb,
.mount = cgroup_mount,
.kill_sb = cgroup_kill_sb,
};

13
kernel/cpuset.c
View file

@ -231,18 +231,17 @@ static DEFINE_SPINLOCK(cpuset_buffer_lock);
* users. If someone tries to mount the "cpuset" filesystem, we
* silently switch it to mount "cgroup" instead
*/
static int cpuset_get_sb(struct file_system_type *fs_type,
int flags, const char *unused_dev_name,
void *data, struct vfsmount *mnt)
static struct dentry *cpuset_mount(struct file_system_type *fs_type,
int flags, const char *unused_dev_name, void *data)
{
struct file_system_type *cgroup_fs = get_fs_type("cgroup");
int ret = -ENODEV;
struct dentry *ret = ERR_PTR(-ENODEV);
if (cgroup_fs) {
char mountopts[] =
"cpuset,noprefix,"
"release_agent=/sbin/cpuset_release_agent";
ret = cgroup_fs->get_sb(cgroup_fs, flags,
unused_dev_name, mountopts, mnt);
ret = cgroup_fs->mount(cgroup_fs, flags,
unused_dev_name, mountopts);
put_filesystem(cgroup_fs);
}
return ret;
@ -250,7 +249,7 @@ static int cpuset_get_sb(struct file_system_type *fs_type,
static struct file_system_type cpuset_fs_type = {
.name = "cpuset",
.get_sb = cpuset_get_sb,
.mount = cpuset_mount,
};
/*