[PATCH] Fix compilation warning for fs/ocfs2/xattr.c

[PATCH] Fix compilation warning for fs/ocfs2/xattr.c

[Subrata Modak]

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Hi,

gcc 4.4.1 generates the following build warning on i386:

CC [M]  fs/ocfs2/xattr.o
fs/ocfs2/xattr.c: In function ‘ocfs2_xattr_block_get’:
fs/ocfs2/xattr.c:1055: warning: ‘block_off’ may be used uninitialized in this function

The following fix is based on a similar approach by David Howells
few days back: http://lkml.org/lkml/2009/7/9/109,

Signed-off-by: Subrata Modak<subrata@linux.vnet.ibm.com>,
---

--- a/fs/ocfs2/xattr.c	2009-06-17 17:47:21.000000000 +0530
+++ b/fs/ocfs2/xattr.c	2009-07-14 01:02:22.000000000 +0530
@@ -1052,7 +1052,8 @@ static int ocfs2_xattr_block_get(struct 
 	struct ocfs2_xattr_block *xb;
 	struct ocfs2_xattr_value_root *xv;
 	size_t size;
-	int ret = -ENODATA, name_offset, name_len, block_off, i;
+	int ret = -ENODATA, name_offset, name_len, i;
+	int uninitialized_var(block_off);
 
 	xs->bucket = ocfs2_xattr_bucket_new(inode);
 	if (!xs->bucket) {

---
Regards--
Subrata

Re: [PATCH] Fix compilation warning for fs/ocfs2/xattr.c

[Joel Becker]

On Tue, Jul 14, 2009 at 01:19:31AM +0530, Subrata Modak wrote:
> gcc 4.4.1 generates the following build warning on i386:
> 
> CC [M]  fs/ocfs2/xattr.o
> fs/ocfs2/xattr.c: In function ‘ocfs2_xattr_block_get’:
> fs/ocfs2/xattr.c:1055: warning: ‘block_off’ may be used uninitialized in this function
> 
> The following fix is based on a similar approach by David Howells
> few days back: http://lkml.org/lkml/2009/7/9/109,
> 
> Signed-off-by: Subrata Modak<subrata@linux.vnet.ibm.com>,

	This is now in the fixes branch of ocfs2.git.

Joel

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Joel Becker
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