linux-ext4 - [PATCH] ext3: Use DIV_ROUND_UP() on group desc block counting

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Date:	Mon, 11 Oct 2010 19:38:39 +0900
From:	Namhyung Kim <namhyung@...il.com>
To:	Jan Kara <jack@...e.cz>, Andrew Morton <akpm@...ux-foundation.org>,
	Andreas Dilger <adilger.kernel@...ger.ca>
Cc:	linux-ext4@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] ext3: Use DIV_ROUND_UP() on group desc block counting

Signed-off-by: Namhyung Kim <namhyung@...il.com>
---
 fs/ext3/super.c |    3 +--
 1 files changed, 1 insertions(+), 2 deletions(-)

diff --git a/fs/ext3/super.c b/fs/ext3/super.c
index 75bbf77..3fce402 100644
--- a/fs/ext3/super.c
+++ b/fs/ext3/super.c
@@ -1864,8 +1864,7 @@ static int ext3_fill_super (struct super_block *sb, void *data, int silent)
 	sbi->s_groups_count = ((le32_to_cpu(es->s_blocks_count) -
 			       le32_to_cpu(es->s_first_data_block) - 1)
 				       / EXT3_BLOCKS_PER_GROUP(sb)) + 1;
-	db_count = (sbi->s_groups_count + EXT3_DESC_PER_BLOCK(sb) - 1) /
-		   EXT3_DESC_PER_BLOCK(sb);
+	db_count = DIV_ROUND_UP(sbi->s_groups_count, EXT3_DESC_PER_BLOCK(sb));
 	sbi->s_group_desc = kmalloc(db_count * sizeof (struct buffer_head *),
 				    GFP_KERNEL);
 	if (sbi->s_group_desc == NULL) {
-- 
1.7.0.4

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