sysfs: move s_active functions to fs/sysfs/dir.c

These functions are about to receive more complexity and doesn't
really need to be inlined in the first place.  Move them from
fs/sysfs/sysfs.h to fs/sysfs/dir.c.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 6 insertions, 88 deletions

diff --git a/fs/sysfs/sysfs.h b/fs/sysfs/sysfs.h
index 627bf3940dfa..f8779eaa53ff 100644
--- a/fs/sysfs/sysfs.h
+++ b/fs/sysfs/sysfs.h
@@ -56,6 +56,12 @@ enum sysfs_s_active_class
 extern struct vfsmount * sysfs_mount;
 extern struct kmem_cache *sysfs_dir_cachep;
 
+extern struct sysfs_dirent *sysfs_get_active(struct sysfs_dirent *sd);
+extern void sysfs_put_active(struct sysfs_dirent *sd);
+extern struct sysfs_dirent *sysfs_get_active_two(struct sysfs_dirent *sd);
+extern void sysfs_put_active_two(struct sysfs_dirent *sd);
+extern void sysfs_deactivate(struct sysfs_dirent *sd);
+
 extern void sysfs_delete_inode(struct inode *inode);
 extern void sysfs_init_inode(struct sysfs_dirent *sd, struct inode *inode);
 extern struct inode * sysfs_get_inode(struct sysfs_dirent *sd);
@@ -104,94 +110,6 @@ static inline void sysfs_put(struct sysfs_dirent * sd)
 		release_sysfs_dirent(sd);
 }
 
-/**
- *	sysfs_get_active - get an active reference to sysfs_dirent
- *	@sd: sysfs_dirent to get an active reference to
- *
- *	Get an active reference of @sd.  This function is noop if @sd
- *	is NULL.
- *
- *	RETURNS:
- *	Pointer to @sd on success, NULL on failure.
- */
-static inline struct sysfs_dirent *sysfs_get_active(struct sysfs_dirent *sd)
-{
-	if (sd) {
-		if (unlikely(!down_read_trylock(&sd->s_active)))
-			sd = NULL;
-	}
-	return sd;
-}
-
-/**
- *	sysfs_put_active - put an active reference to sysfs_dirent
- *	@sd: sysfs_dirent to put an active reference to
- *
- *	Put an active reference to @sd.  This function is noop if @sd
- *	is NULL.
- */
-static inline void sysfs_put_active(struct sysfs_dirent *sd)
-{
-	if (sd)
-		up_read(&sd->s_active);
-}
-
-/**
- *	sysfs_get_active_two - get active references to sysfs_dirent and parent
- *	@sd: sysfs_dirent of interest
- *
- *	Get active reference to @sd and its parent.  Parent's active
- *	reference is grabbed first.  This function is noop if @sd is
- *	NULL.
- *
- *	RETURNS:
- *	Pointer to @sd on success, NULL on failure.
- */
-static inline struct sysfs_dirent *sysfs_get_active_two(struct sysfs_dirent *sd)
-{
-	if (sd) {
-		if (sd->s_parent && unlikely(!sysfs_get_active(sd->s_parent)))
-			return NULL;
-		if (unlikely(!sysfs_get_active(sd))) {
-			sysfs_put_active(sd->s_parent);
-			return NULL;
-		}
-	}
-	return sd;
-}
-
-/**
- *	sysfs_put_active_two - put active references to sysfs_dirent and parent
- *	@sd: sysfs_dirent of interest
- *
- *	Put active references to @sd and its parent.  This function is
- *	noop if @sd is NULL.
- */
-static inline void sysfs_put_active_two(struct sysfs_dirent *sd)
-{
-	if (sd) {
-		sysfs_put_active(sd);
-		sysfs_put_active(sd->s_parent);
-	}
-}
-
-/**
- *	sysfs_deactivate - deactivate sysfs_dirent
- *	@sd: sysfs_dirent to deactivate
- *
- *	Deny new active references and drain existing ones.  s_active
- *	will be unlocked when the sysfs_dirent is released.
- */
-static inline void sysfs_deactivate(struct sysfs_dirent *sd)
-{
-	down_write_nested(&sd->s_active, SYSFS_S_ACTIVE_DEACTIVATE);
-
-	/* s_active will be unlocked by the thread doing the final put
-	 * on @sd.  Lie to lockdep.
-	 */
-	rwsem_release(&sd->s_active.dep_map, 1, _RET_IP_);
-}
-
 static inline int sysfs_is_shadowed_inode(struct inode *inode)
 {
 	return S_ISDIR(inode->i_mode) && inode->i_op->follow_link;