linux-ext4 - [PATCH 8/8] ext4: use ext4_data_block_valid() in ext4_free

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Message-Id: <1258942710-31930-9-git-send-email-tytso@mit.edu>
Date:	Sun, 22 Nov 2009 21:18:30 -0500
From:	Theodore Ts'o <tytso@....edu>
To:	Ext4 Developers List <linux-ext4@...r.kernel.org>
Cc:	Theodore Ts'o <tytso@....edu>
Subject: [PATCH 8/8] ext4: use ext4_data_block_valid() in ext4_free_blocks()

The block validity framework does a more comprehensive set of checks,
and it saves object code space to use the ext4_data_block_valid() than
the limited open-coded version that had been in ext4_free_blocks().

Signed-off-by: "Theodore Ts'o" <tytso@....edu>
---
 fs/ext4/mballoc.c |    4 +---
 1 files changed, 1 insertions(+), 3 deletions(-)

diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c
index 78de5d3..ab2dad1 100644
--- a/fs/ext4/mballoc.c
+++ b/fs/ext4/mballoc.c
@@ -4463,9 +4463,7 @@ void ext4_free_blocks(handle_t *handle, struct inode *inode,
 
 	sbi = EXT4_SB(sb);
 	es = EXT4_SB(sb)->s_es;
-	if (block < le32_to_cpu(es->s_first_data_block) ||
-	    block + count < block ||
-	    block + count > ext4_blocks_count(es)) {
+	if (!ext4_data_block_valid(sbi, block, count)) {
 		ext4_error(sb, __func__,
 			    "Freeing blocks not in datazone - "
 			    "block = %llu, count = %lu", block, count);
-- 
1.6.5.216.g5288a.dirty

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