linux-kernel - [PATCH 4.17 047/336] ceph: fix alignment of rasize

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Message-Id: <20180801165030.879827910@linuxfoundation.org>
Date:   Wed,  1 Aug 2018 18:46:22 +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, Chengguang Xu <cgxu519@....com>,
        "Yan, Zheng" <zyan@...hat.com>, Ilya Dryomov <idryomov@...il.com>,
        Sasha Levin <alexander.levin@...rosoft.com>
Subject: [PATCH 4.17 047/336] ceph: fix alignment of rasize

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

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

From: Chengguang Xu <cgxu519@....com>

[ Upstream commit c36ed50de2ad1649ce0369a4a6fc2cc11b20dfb7 ]

On currently logic:
when I specify rasize=0~1 then it will be 4096.
when I specify rasize=2~4097 then it will be 8192.

Make it the same as rsize & wsize.

Signed-off-by: Chengguang Xu <cgxu519@....com>
Reviewed-by: "Yan, Zheng" <zyan@...hat.com>
Signed-off-by: Ilya Dryomov <idryomov@...il.com>
Signed-off-by: Sasha Levin <alexander.levin@...rosoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 fs/ceph/super.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/fs/ceph/super.c
+++ b/fs/ceph/super.c
@@ -268,7 +268,7 @@ static int parse_fsopt_token(char *c, vo
 	case Opt_rasize:
 		if (intval < 0)
 			return -EINVAL;
-		fsopt->rasize = ALIGN(intval + PAGE_SIZE - 1, PAGE_SIZE);
+		fsopt->rasize = ALIGN(intval, PAGE_SIZE);
 		break;
 	case Opt_caps_wanted_delay_min:
 		if (intval < 1)