linux-kernel - Re: [PATCH v2] ceph: Fix file open flags on ppc64

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Date:   Fri, 28 Apr 2017 11:14:56 +0200
From:   Alexander Graf <agraf@...e.de>
To:     "Yan, Zheng" <zyan@...hat.com>
Cc:     ceph-devel <ceph-devel@...r.kernel.org>,
        Sage Weil <sage@...hat.com>, Ilya Dryomov <idryomov@...il.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Jan.Fajerski@...e.com, Jeff Layton <jlayton@...hat.com>
Subject: Re: [PATCH v2] ceph: Fix file open flags on ppc64



On 28.04.17 09:57, Yan, Zheng wrote:
>
>> On 28 Apr 2017, at 00:34, Alexander Graf <agraf@...e.de> wrote:
>>
>> The file open flags (O_foo) are platform specific and should never go
>> out to an interface that is not local to the system.
>>
>> Unfortunately these flags have leaked out onto the wire in the cephfs
>> implementation. That lead to bogus flags getting transmitted on ppc64.
>>
>> This patch converts the kernel view of flags to the ceph view of file
>> open flags.
>>
>> Fixes: 124e68e74 ("ceph: file operations")
>> Signed-off-by: Alexander Graf <agraf@...e.de>
>>
>> —
>
> I removed the "unused open flags” dout and applied the patch. Thank you for tracking down and fixing the bug.

I actually put that in on purpose, in case anyone in 2 years tries to 
find out why a particular flag doesn't get populated :).


Alex