linux-ext4 - [PATCH] ext4: Check for the correct error return from ext4_ext_get

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Message-Id: <1196677650-10479-1-git-send-email-aneesh.kumar@linux.vnet.ibm.com>
Date:	Mon,  3 Dec 2007 15:57:30 +0530
From:	"Aneesh Kumar K.V" <aneesh.kumar@...ux.vnet.ibm.com>
To:	akpm@...ux-foundation.org
Cc:	linux-ext4@...r.kernel.org,
	"Aneesh Kumar K.V" <aneesh.kumar@...ux.vnet.ibm.com>
Subject: [PATCH] ext4: Check for the correct error return from ext4_ext_get_blocks

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 |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c
index a2475d4..ce57245 100644
--- a/fs/ext4/extents.c
+++ b/fs/ext4/extents.c
@@ -2558,8 +2558,8 @@ 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=%llu, max_blocks=%llu",
-- 
1.5.3.6.985.g65c6a4-dirty

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