linux-kernel - Re: linux-next: manual merge of the kvm tree with Linus' tree

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Date:	Wed, 01 Jul 2009 10:32:22 +0300
From:	Avi Kivity <avi@...hat.com>
To:	Davide Libenzi <davidel@...ilserver.org>
CC:	Stephen Rothwell <sfr@...b.auug.org.au>,
	linux-next@...r.kernel.org,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Gregory Haskins <ghaskins@...ell.com>
Subject: Re: linux-next: manual merge of the kvm tree with Linus' tree

On 07/01/2009 10:10 AM, Davide Libenzi wrote:
> On Wed, 1 Jul 2009, Stephen Rothwell wrote:
>
>    
>> Hi Avi,
>>
>> Today's linux-next merge of the kvm tree got a conflict in fs/eventfd.c
>> between commit 133890103b9de08904f909995973e4b5c08a780e ("eventfd:
>> revised interface and cleanups") from Linus' tree and commit
>> 28ddf0aebbf546e56efd1951725d5457ce1ebf98 ("eventfd: Allow waiters to be
>> notified about the eventfd file* going away") from the kvm tree.
>>
>> Overlapping changes.  I fixed it up (see below), but don't know if this
>> is the correct fix.
>>
>> -- 
>> Cheers,
>> Stephen Rothwell                    sfr@...b.auug.org.au
>>
>> diff --cc fs/eventfd.c
>> index 31d12de,72f5f8d..0000000
>> --- a/fs/eventfd.c
>> +++ b/fs/eventfd.c
>> @@@ -105,8 -63,13 +105,13 @@@ static int eventfd_release(struct inod
>>    {
>>    	struct eventfd_ctx *ctx = file->private_data;
>>
>> - 	wake_up_poll(&ctx->wqh, POLLHUP);
>> + 	/*
>> + 	 * No need to hold the lock here, since we are on the file cleanup
>> + 	 * path and the ones still attached to the wait queue will be
>> + 	 * serialized by wake_up_locked_poll().
>> + 	 */
>> + 	wake_up_locked_poll(&ctx->wqh, POLLHUP);
>>   -	kfree(ctx);
>>   +	eventfd_ctx_put(ctx);
>>    	return 0;
>>    }
>>      
>
> That's fine.
> There are a couple of extra spaces before the last two -+ in that patch
> though ;)
>    

No, that's a git N-way diff format.  The first column shows the changes 
relative to mainline by kvm.git, and the second the changes to kvm.git 
made by mainline.

I've merged and will push soon, which will resolve the conflict, but I 
think the patch wake_up_locked_poll() is better off in mainline rather 
than kvm.git.

-- 
error compiling committee.c: too many arguments to function

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