From: lizhe.67@bytedance.com
To: hch@infradead.org
Cc: akpm@linux-foundation.org, boqun.feng@gmail.com,
linux-kernel@vger.kernel.org, linux-mm@kvack.org,
lizhe.67@bytedance.com, longman@redhat.com, mingo@redhat.com,
peterz@infradead.org, will@kernel.org
Subject: Re: [RFC 1/2] rwsem: introduce upgrade_read interface
Date: Wed, 16 Oct 2024 16:00:57 +0800 [thread overview]
Message-ID: <20241016080057.43997-1-lizhe.67@bytedance.com> (raw)
In-Reply-To: <Zw9s86K0Dv2FZvt2@infradead.org>
On Wed, 16 Oct 2024 00:36:19 -0700, hch@infradead.org wrote:
>> >> +extern int upgrade_read(struct rw_semaphore *sem);
>> >
>> >No need for the extern. Also please make any new advanced funtionality
>>
>> Sorry I don't understand why extern is not needed. If we remove it,
>> we will encounter the following compilation error:
>
>That sounds like you dropped the entire line above, and not just the
>"extern ".
OK I know what you mean. It is indeed OK to remove "extern", but all function
declarations in the rwsem.h have the "extern" prefix. I think it would be
better to keep it consistent.
Thanks!
next prev parent reply other threads:[~2024-10-16 8:01 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-10-16 4:35 [RFC 0/2] " lizhe.67
2024-10-16 4:35 ` [RFC 1/2] " lizhe.67
2024-10-16 4:56 ` Christoph Hellwig
2024-10-16 7:33 ` lizhe.67
2024-10-16 7:36 ` Christoph Hellwig
2024-10-16 8:00 ` lizhe.67 [this message]
2024-10-16 8:03 ` Christoph Hellwig
2024-10-16 8:13 ` lizhe.67
2024-10-16 11:51 ` Matthew Wilcox
2024-10-16 12:21 ` Christoph Hellwig
2024-10-16 11:49 ` Matthew Wilcox
2024-10-17 6:23 ` lizhe.67
2024-10-16 14:23 ` Waiman Long
2024-10-16 18:05 ` Matthew Wilcox
2024-10-16 18:39 ` Waiman Long
2024-10-17 6:46 ` lizhe.67
2024-10-17 15:05 ` Christoph Hellwig
2024-10-17 17:36 ` Waiman Long
2024-10-18 5:06 ` Christoph Hellwig
2024-10-16 4:36 ` [RFC 2/2] khugepaged: use upgrade_read() to optimize collapse_huge_page lizhe.67
2024-10-16 11:53 ` Matthew Wilcox
2024-10-17 6:18 ` lizhe.67
2024-10-17 13:20 ` Matthew Wilcox
2024-10-18 6:37 ` lizhe.67
2024-10-23 7:27 ` kernel test robot
2024-10-16 8:09 ` [RFC 0/2] rwsem: introduce upgrade_read interface Peter Zijlstra
2024-10-16 8:53 ` lizhe.67
2024-10-16 12:10 ` Peter Zijlstra
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