linux-kernel - [PATCH 3/7] nilfs2: use bgl_lock

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Date:	Thu, 12 Mar 2015 23:38:10 +0900
From:	Ryusuke Konishi <konishi.ryusuke@....ntt.co.jp>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	linux-kernel@...r.kernel.org, linux-nilfs@...r.kernel.org,
	Ryusuke Konishi <konishi.ryusuke@....ntt.co.jp>
Subject: [PATCH 3/7] 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@....ntt.co.jp>
---
 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 ab172e8..a294ea3 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 */
-- 
1.8.3.1

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