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

Signed-off-by: Ryusuke Konishi <konishi.ryus...@lab.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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