From: Xiao Ni <xni@redhat.com>
To: Christoph Hellwig <hch@infradead.org>
Cc: songliubraving@fb.com, linux-raid@vger.kernel.org,
matthew.ruffell@canonical.com, colyli@suse.de,
guoqing.jiang@cloud.ionos.com, ncroxon@redhat.com
Subject: Re: [PATCH 1/5] md: add md_submit_discard_bio() for submitting discard bio
Date: Thu, 4 Feb 2021 15:37:35 +0800 [thread overview]
Message-ID: <52ed5df2-26c9-6959-17e8-90a28572804b@redhat.com> (raw)
In-Reply-To: <20210204071916.GA123308@infradead.org>
On 02/04/2021 03:19 PM, Christoph Hellwig wrote:
> On Thu, Feb 04, 2021 at 12:07:58PM +0800, Xiao Ni wrote:
>>>> +extern void md_submit_discard_bio(struct mddev *mddev, struct md_rdev *rdev,
>>>> + struct bio *bio, sector_t start, sector_t size);
>>> no need for the extern.
>>>
>> Hi Christoph
>>
>> It needs to export it here. If not, there is compile error.
>>
>> raid0.c:502:3: error: implicit declaration of function
>> ???md_submit_discard_bio??? [-Werror=implicit-function-declaration]
>> md_submit_discard_bio(mddev, rdev, bio,
> Yes, the prototype needs to be in the header. But the extern keyword
> is no needed for function declarations.
>
Thanks for pointing about this.
next prev parent reply other threads:[~2021-02-04 7:39 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-02-03 13:45 [PATCH 0/5] md/raid10: Improve handling raid10 discard request Xiao Ni
2021-02-03 13:45 ` [PATCH 1/5] md: add md_submit_discard_bio() for submitting discard bio Xiao Ni
2021-02-03 15:44 ` Christoph Hellwig
2021-02-04 1:51 ` Xiao Ni
2021-02-04 4:07 ` Xiao Ni
2021-02-04 7:19 ` Christoph Hellwig
2021-02-04 7:37 ` Xiao Ni [this message]
2021-02-03 13:45 ` [PATCH 2/5] md/raid10: extend r10bio devs to raid disks Xiao Ni
2021-02-03 15:44 ` Christoph Hellwig
2021-02-03 13:45 ` [PATCH 3/5] md/raid10: pull codes that wait for blocked dev into one function Xiao Ni
2021-02-03 15:46 ` Christoph Hellwig
2021-02-04 1:54 ` Xiao Ni
2021-02-03 13:45 ` [PATCH 4/5] md/raid10: improve raid10 discard request Xiao Ni
2021-02-03 15:50 ` Christoph Hellwig
2021-02-04 2:00 ` Xiao Ni
2021-02-03 13:45 ` [PATCH 5/5] md/raid10: improve discard request for far layout Xiao Ni
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