linux-kernel - [PATCH 4.9 36/51] ceph: fix bogus endianness change in ceph_ioctl_set

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Message-Id: <20171019134843.640520626@linuxfoundation.org>
Date:   Thu, 19 Oct 2017 15:48:57 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Jeff Layton <jlayton@...hat.com>,
        Sage Weil <sage@...hat.com>, Ilya Dryomov <idryomov@...il.com>,
        Sasha Levin <alexander.levin@...izon.com>
Subject: [PATCH 4.9 36/51] ceph: fix bogus endianness change in ceph_ioctl_set_layout

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

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

From: Jeff Layton <jlayton@...hat.com>


[ Upstream commit 24c149ad6914d349d8b64749f20f3f8ea5031fe0 ]

sparse says:

    fs/ceph/ioctl.c:100:28: warning: cast to restricted __le64

preferred_osd is a __s64 so we don't need to do any conversion. Also,
just remove the cast in ceph_ioctl_get_layout as it's not needed.

Signed-off-by: Jeff Layton <jlayton@...hat.com>
Reviewed-by: Sage Weil <sage@...hat.com>
Signed-off-by: Ilya Dryomov <idryomov@...il.com>
Signed-off-by: Sasha Levin <alexander.levin@...izon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 fs/ceph/ioctl.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/fs/ceph/ioctl.c
+++ b/fs/ceph/ioctl.c
@@ -25,7 +25,7 @@ static long ceph_ioctl_get_layout(struct
 		l.stripe_count = ci->i_layout.stripe_count;
 		l.object_size = ci->i_layout.object_size;
 		l.data_pool = ci->i_layout.pool_id;
-		l.preferred_osd = (s32)-1;
+		l.preferred_osd = -1;
 		if (copy_to_user(arg, &l, sizeof(l)))
 			return -EFAULT;
 	}
@@ -97,7 +97,7 @@ static long ceph_ioctl_set_layout(struct
 		nl.data_pool = ci->i_layout.pool_id;
 
 	/* this is obsolete, and always -1 */
-	nl.preferred_osd = le64_to_cpu(-1);
+	nl.preferred_osd = -1;
 
 	err = __validate_layout(mdsc, &nl);
 	if (err)