[PATCH 7/8] ext2: cleanup ext2_sync_super a bit

[Artem Bityutskiy <dedekind1@gmail.com>]

From: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>

We have many 'EXT2_SB()' in 'ext2_sync_super()' and I am going to introduce a
new one. The code will be a bit nicer if I introduce an 'sbi' pointer instead.
So this patch is just a tiny preparational cleanup.

Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
---
 fs/ext2/super.c |   10 ++++++----
 1 files changed, 6 insertions(+), 4 deletions(-)

diff --git a/fs/ext2/super.c b/fs/ext2/super.c
index 95dc25f..4eee017 100644
--- a/fs/ext2/super.c
+++ b/fs/ext2/super.c
@@ -1160,6 +1160,8 @@ static void ext2_clear_super_error(struct super_block *sb)
 static void ext2_sync_super(struct super_block *sb, struct ext2_super_block *es,
 			    int wait)
 {
+	struct ext2_sb_info *sbi = EXT2_SB(sb);
+
 	sb->s_dirt = 0;
 	/*
 	 * Make sure we first mark the superblock as clean and then start
@@ -1168,15 +1170,15 @@ static void ext2_sync_super(struct super_block *sb, struct ext2_super_block *es,
 	smp_wmb();
 
 	ext2_clear_super_error(sb);
-	spin_lock(&EXT2_SB(sb)->s_lock);
+	spin_lock(&sbi->s_lock);
 	es->s_free_blocks_count = cpu_to_le32(ext2_count_free_blocks(sb));
 	es->s_free_inodes_count = cpu_to_le32(ext2_count_free_inodes(sb));
 	es->s_wtime = cpu_to_le32(get_seconds());
 	/* unlock before we do IO */
-	spin_unlock(&EXT2_SB(sb)->s_lock);
-	mark_buffer_dirty(EXT2_SB(sb)->s_sbh);
+	spin_unlock(&sbi->s_lock);
+	mark_buffer_dirty(sbi->s_sbh);
 	if (wait)
-		sync_dirty_buffer(EXT2_SB(sb)->s_sbh);
+		sync_dirty_buffer(sbi->s_sbh);
 }
 
 /*
-- 
1.7.7.6