From 0de6d6b9a2ba21ae28b2420f6684021904833f68 Mon Sep 17 00:00:00 2001
From: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
Date: Thu, 16 Apr 2015 12:46:31 -0700
Subject: [PATCH] nilfs2: use bgl_lock_ptr()

Simplify nilfs_mdt_bgl_lock() by utilizing bgl_lock_ptr() helper in
<linux/blockgroup_lock.h>.

Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
 fs/nilfs2/mdt.h | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/fs/nilfs2/mdt.h b/fs/nilfs2/mdt.h
index ab172e8549c5..a294ea38e4c7 100644
--- a/fs/nilfs2/mdt.h
+++ b/fs/nilfs2/mdt.h
@@ -111,7 +111,10 @@ static inline __u64 nilfs_mdt_cno(struct inode *inode)
 	return ((struct the_nilfs *)inode->i_sb->s_fs_info)->ns_cno;
 }
 
-#define nilfs_mdt_bgl_lock(inode, bg) \
-	(&NILFS_MDT(inode)->mi_bgl->locks[(bg) & (NR_BG_LOCKS-1)].lock)
+static inline spinlock_t *
+nilfs_mdt_bgl_lock(struct inode *inode, unsigned int block_group)
+{
+	return bgl_lock_ptr(NILFS_MDT(inode)->mi_bgl, block_group);
+}
 
 #endif /* _NILFS_MDT_H */
-- 
2.20.1