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| author | Al Viro <viro@zeniv.linux.org.uk> | 2012-03-17 21:53:29 +0100 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2012-03-21 02:29:48 +0100 |
| commit | 2a152ad3a58508b06b9e0482e68117a79bbb27ce (patch) | |
| tree | fd80467e9b4cbeb163eb58239e9400c22946ef84 | |
| parent | configfs: configfs_create_dir() has parent dentry in dentry->d_parent (diff) | |
| download | linux-2a152ad3a58508b06b9e0482e68117a79bbb27ce.tar.xz linux-2a152ad3a58508b06b9e0482e68117a79bbb27ce.zip | |
make configfs_pin_fs() return root dentry on success
... and make configfs_mnt static
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| -rw-r--r-- | fs/configfs/configfs_internal.h | 3 | ||||
| -rw-r--r-- | fs/configfs/dir.c | 14 | ||||
| -rw-r--r-- | fs/configfs/mount.c | 7 |
3 files changed, 11 insertions, 13 deletions
diff --git a/fs/configfs/configfs_internal.h b/fs/configfs/configfs_internal.h index 37121c2be110..b5f0a3b91f18 100644 --- a/fs/configfs/configfs_internal.h +++ b/fs/configfs/configfs_internal.h @@ -58,7 +58,6 @@ struct configfs_dirent { extern struct mutex configfs_symlink_mutex; extern spinlock_t configfs_dirent_lock; -extern struct vfsmount * configfs_mount; extern struct kmem_cache *configfs_dir_cachep; extern int configfs_is_root(struct config_item *item); @@ -80,7 +79,7 @@ extern const unsigned char * configfs_get_name(struct configfs_dirent *sd); extern void configfs_drop_dentry(struct configfs_dirent *sd, struct dentry *parent); extern int configfs_setattr(struct dentry *dentry, struct iattr *iattr); -extern int configfs_pin_fs(void); +extern struct dentry *configfs_pin_fs(void); extern void configfs_release_fs(void); extern struct rw_semaphore configfs_rename_sem; diff --git a/fs/configfs/dir.c b/fs/configfs/dir.c index 6c560e77965c..7e6c52d8a207 100644 --- a/fs/configfs/dir.c +++ b/fs/configfs/dir.c @@ -1075,16 +1075,15 @@ int configfs_depend_item(struct configfs_subsystem *subsys, * Pin the configfs filesystem. This means we can safely access * the root of the configfs filesystem. */ - ret = configfs_pin_fs(); - if (ret) - return ret; + root = configfs_pin_fs(); + if (IS_ERR(root)) + return PTR_ERR(root); /* * Next, lock the root directory. We're going to check that the * subsystem is really registered, and so we need to lock out * configfs_[un]register_subsystem(). */ - root = configfs_mount->mnt_root; mutex_lock(&root->d_inode->i_mutex); root_sd = root->d_fsdata; @@ -1673,14 +1672,13 @@ int configfs_register_subsystem(struct configfs_subsystem *subsys) struct dentry *root; struct configfs_dirent *sd; - err = configfs_pin_fs(); - if (err) - return err; + root = configfs_pin_fs(); + if (IS_ERR(root)) + return PTR_ERR(root); if (!group->cg_item.ci_name) group->cg_item.ci_name = group->cg_item.ci_namebuf; - root = configfs_mount->mnt_root; sd = root->d_fsdata; link_group(to_config_group(sd->s_element), group); diff --git a/fs/configfs/mount.c b/fs/configfs/mount.c index cc829fc85d77..aee0a7ebbd8e 100644 --- a/fs/configfs/mount.c +++ b/fs/configfs/mount.c @@ -37,7 +37,7 @@ /* Random magic number */ #define CONFIGFS_MAGIC 0x62656570 -struct vfsmount * configfs_mount = NULL; +static struct vfsmount *configfs_mount = NULL; struct kmem_cache *configfs_dir_cachep; static int configfs_mnt_count = 0; @@ -115,10 +115,11 @@ static struct file_system_type configfs_fs_type = { .kill_sb = kill_litter_super, }; -int configfs_pin_fs(void) +struct dentry *configfs_pin_fs(void) { - return simple_pin_fs(&configfs_fs_type, &configfs_mount, + int err = simple_pin_fs(&configfs_fs_type, &configfs_mount, &configfs_mnt_count); + return err ? ERR_PTR(err) : configfs_mount->mnt_root; } void configfs_release_fs(void) |