linux-kernel - Re: [PATCH] fs/eventpoll: error handling micro-cleanup

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Date:	Sun, 01 Oct 2006 12:08:03 -0400
From:	Jeff Garzik <jeff@...zik.org>
To:	Davide Libenzi <davidel@...ilserver.org>
CC:	Andrew Morton <akpm@...l.org>, LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] fs/eventpoll: error handling micro-cleanup

Davide Libenzi wrote:
> On Sun, 1 Oct 2006, Jeff Garzik wrote:
> 
>> While reviewing the 'may be used uninitialized' bogus gcc warnings,
>> I noticed that an error code assignment was only needed if an error had
>> actually occured.
> 
> But that saved one line of code, and there are countless occurences in the 
> kernel of such code pattern ;)

I'm not sure there are countless occurrences with PTR_ERR().  The line 
is incorrect (but harmless) if inode is a valid pointer...


> In any case, fine by me and not worth further discussion.

Thanks :)


>> --- a/fs/eventpoll.c
>> +++ b/fs/eventpoll.c
>> @@ -720,9 +720,10 @@ static int ep_getfd(int *efd, struct ino
>>  
>>  	/* Allocates an inode from the eventpoll file system */
>>  	inode = ep_eventpoll_inode();
>> -	error = PTR_ERR(inode);
>> -	if (IS_ERR(inode))
>> +	if (IS_ERR(inode)) {
>> +		error = PTR_ERR(inode);


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