linux-kernel - [087/264] pnfsblock: fix size of upcall message

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Message-Id: <20111109213150.851158920@clark.kroah.org>
Date:	Wed, 09 Nov 2011 13:32:14 -0800
From:	Greg KH <gregkh@...e.de>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:	torvalds@...ux-foundation.org, akpm@...ux-foundation.org,
	alan@...rguk.ukuu.org.uk, Jim Rees <rees@...ch.edu>,
	Benny Halevy <bhalevy@...ian.com>,
	Trond Myklebust <Trond.Myklebust@...app.com>
Subject: [087/264] pnfsblock: fix size of upcall message

3.1-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Jim Rees <rees@...ch.edu>

commit fdc17abbc4b6094b34ee8ff5d91eaba8637594a2 upstream.

Make the status field explicitly 32 bits.  "...it's unlikely that the kernel
and userspace would differ on the size of an int here, but it might be a
good idea to go ahead and make that explicitly 32 bits in case we end up
dealing with more exotic arches at some point in the future."

Suggested-by: Jeff Layton <jlayton@...hat.com>
Signed-off-by: Jim Rees <rees@...ch.edu>
Signed-off-by: Benny Halevy <bhalevy@...ian.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@...app.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...e.de>

---
 fs/nfs/blocklayout/blocklayout.h |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/fs/nfs/blocklayout/blocklayout.h
+++ b/fs/nfs/blocklayout/blocklayout.h
@@ -150,7 +150,7 @@ BLK_LSEG2EXT(struct pnfs_layout_segment
 }
 
 struct bl_dev_msg {
-	int status;
+	int32_t status;
 	uint32_t major, minor;
 };
 


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