[PATCH trivial] include : linux: hugetlb: Clean up code

[chengang]

From: Chen Gang <gang.chen.5i5j@xxxxxxxxx>

Macro HUGETLBFS_SB is clearer enough, so one statement is clearer than
3 lines statements.

Remove redundant return statements for non-return functions, which can
save lines, at least.

Signed-off-by: Chen Gang <gang.chen.5i5j@xxxxxxxxx>
---
 include/linux/hugetlb.h        | 4 +---
 include/linux/hugetlb_cgroup.h | 4 ----
 2 files changed, 1 insertion(+), 7 deletions(-)

diff --git a/include/linux/hugetlb.h b/include/linux/hugetlb.h
index 0f735ea..c26d463 100644
--- a/include/linux/hugetlb.h
+++ b/include/linux/hugetlb.h
@@ -353,9 +353,7 @@ extern unsigned int default_hstate_idx;
 
 static inline struct hstate *hstate_inode(struct inode *i)
 {
-	struct hugetlbfs_sb_info *hsb;
-	hsb = HUGETLBFS_SB(i->i_sb);
-	return hsb->hstate;
+	return HUGETLBFS_SB(i->i_sb)->hstate;
 }
 
 static inline struct hstate *hstate_file(struct file *f)
diff --git a/include/linux/hugetlb_cgroup.h b/include/linux/hugetlb_cgroup.h
index 24154c2..063962f 100644
--- a/include/linux/hugetlb_cgroup.h
+++ b/include/linux/hugetlb_cgroup.h
@@ -93,20 +93,17 @@ hugetlb_cgroup_commit_charge(int idx, unsigned long nr_pages,
 			     struct hugetlb_cgroup *h_cg,
 			     struct page *page)
 {
-	return;
 }
 
 static inline void
 hugetlb_cgroup_uncharge_page(int idx, unsigned long nr_pages, struct page *page)
 {
-	return;
 }
 
 static inline void
 hugetlb_cgroup_uncharge_cgroup(int idx, unsigned long nr_pages,
 			       struct hugetlb_cgroup *h_cg)
 {
-	return;
 }
 
 static inline void hugetlb_cgroup_file_init(void)
@@ -116,7 +113,6 @@ static inline void hugetlb_cgroup_file_init(void)
 static inline void hugetlb_cgroup_migrate(struct page *oldhpage,
 					  struct page *newhpage)
 {
-	return;
 }
 
 #endif  /* CONFIG_MEM_RES_CTLR_HUGETLB */
-- 
1.9.3