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;