convert cgroup and cpuset

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

diff --git a/kernel/cgroup.c b/kernel/cgroup.c
index 5cf3669..66a416b 100644 (file)
--- a/kernel/cgroup.c
+++ b/kernel/cgroup.c
@@ -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,
 };
 

diff --git a/kernel/cpuset.c b/kernel/cpuset.c
index 51b143e..4349935 100644 (file)
--- a/kernel/cpuset.c
+++ b/kernel/cpuset.c
@@ -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,
 };
 
 /*