linux-kernel - Re: [PATCH 1/1] drivers/staging: Fixed sparse error "directive in argument list"

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Date:	Sat, 11 Oct 2014 23:02:54 +0100
From:	Filipe Gonçalves <filipe@...inghighway.com>
To:	"Drokin, Oleg" <oleg.drokin@...el.com>
Cc:	Greg KH <gregkh@...uxfoundation.org>,
	"Dilger, Andreas" <andreas.dilger@...el.com>,
	devel <devel@...verdev.osuosl.org>,
	"<linux-kernel@...r.kernel.org>" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 1/1] drivers/staging: Fixed sparse error "directive in
 argument list"

Hi,

Oops.. sorry for the mess then. I am still trying to get to know the
codebase. I submitted a new patch where I removed the check.

Thanks for your patience :)

Best,
Filipe

On Sat, Oct 11, 2014 at 10:49 PM, Drokin, Oleg <oleg.drokin@...el.com> wrote:
>
> Hello!
>
>    No, it's not the way to test the kernel version, it's the way to test internal
>    lustre version.
>    Either way maintaining compatibility with Lustre 1.8 and 2.0 servers should not
>    be important anymore, so it's fine to drop this check indeed.
>
> Bye,
>     Oleg
> On Oct 11, 2014, at 5:06 PM, Filipe Gonçalves wrote:
>
>> Ah .. right! I didn't know what OBD_OCD_VERSION() was. Now I see it's
>> a way to test kernel version. I am going to submit a new patch
>> shortly.
>>
>> Thanks,
>> Filipe
>>
>> On Sat, Oct 11, 2014 at 9:15 PM, Greg KH <gregkh@...uxfoundation.org> wrote:
>>>
>>> On Sat, Oct 11, 2014 at 08:13:42PM +0100, Filipe Gonçalves wrote:
>>>> This patch fixes a sparse warning on layout.c (ptlrpc) that was caused by having preprocessor directives in the arguments to a macro.
>>>>
>>>> Signed-off-by: Filipe Gonçalves <filipe@...inghighway.com>
>>>> ---
>>>> drivers/staging/lustre/lustre/ptlrpc/layout.c | 7 +++++--
>>>> 1 file changed, 5 insertions(+), 2 deletions(-)
>>>>
>>>> diff --git a/drivers/staging/lustre/lustre/ptlrpc/layout.c b/drivers/staging/lustre/lustre/ptlrpc/layout.c
>>>> index 5b83371..211df78 100644
>>>> --- a/drivers/staging/lustre/lustre/ptlrpc/layout.c
>>>> +++ b/drivers/staging/lustre/lustre/ptlrpc/layout.c
>>>> @@ -978,10 +978,11 @@ struct req_msg_field RMF_CONN =
>>>> EXPORT_SYMBOL(RMF_CONN);
>>>>
>>>> struct req_msg_field RMF_CONNECT_DATA =
>>>> +#if LUSTRE_VERSION_CODE > OBD_OCD_VERSION(2, 7, 50, 0)
>>>>      DEFINE_MSGF("cdata",
>>>>                  RMF_F_NO_SIZE_CHECK /* we allow extra space for interop */,
>>>> -#if LUSTRE_VERSION_CODE > OBD_OCD_VERSION(2, 7, 50, 0)
>>>>                  sizeof(struct obd_connect_data),
>>>> +                 lustre_swab_connect, NULL);
>>>
>>> Ick ick ick.
>>>
>>> Yeah, sparse might complain about this, but how about just properly
>>> deleting the #ifdef entirely, and not perpetuate it even more?
>>>
>>> It shouldn't be needed anymore now that the code is in the kernel tree.
>>>
>>> greg k-h
>
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