linux-kernel - [PATCH 27/49] ext4: Check for the correct error return from

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Date:	Mon, 21 Jan 2008 22:02:06 -0500
From:	"Theodore Ts'o" <tytso@....EDU>
To:	linux-kernel@...r.kernel.org
Cc:	"Aneesh Kumar K.V" <aneesh.kumar@...ux.vnet.ibm.com>
Subject: [PATCH 27/49] ext4: Check for the correct error return from

From: Aneesh Kumar K.V <aneesh.kumar@...ux.vnet.ibm.com>

ext4_ext_get_blocks returns negative values on error. We should
check for  <= 0

Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@...ux.vnet.ibm.com>
---
 fs/ext4/extents.c |   10 +++++-----
 1 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c
index 754c0d3..8593e59 100644
--- a/fs/ext4/extents.c
+++ b/fs/ext4/extents.c
@@ -2462,12 +2462,12 @@ retry:
 		ret = ext4_ext_get_blocks(handle, inode, block,
 					  max_blocks, &map_bh,
 					  EXT4_CREATE_UNINITIALIZED_EXT, 0);
-		WARN_ON(!ret);
-		if (!ret) {
+		WARN_ON(ret <= 0);
+		if (ret <= 0) {
 			ext4_error(inode->i_sb, "ext4_fallocate",
-				   "ext4_ext_get_blocks returned 0! inode#%lu"
-				   ", block=%u, max_blocks=%lu",
-				   inode->i_ino, block, max_blocks);
+				    "ext4_ext_get_blocks returned error: "
+				    "inode#%lu, block=%u, max_blocks=%lu",
+				    inode->i_ino, block, max_blocks);
 			ret = -EIO;
 			ext4_mark_inode_dirty(handle, inode);
 			ret2 = ext4_journal_stop(handle);
-- 
1.5.4.rc3.31.g1271-dirty

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