linux-kernel - Re: [PATCH 5/5][NFS] Cleanup explicit check for mandatory locks

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Date:	Tue, 18 Sep 2007 10:20:08 +0400
From:	Pavel Emelyanov <xemul@...nvz.org>
To:	Trond Myklebust <trond.myklebust@....uio.no>
CC:	Andrew Morton <akpm@...l.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	devel@...nvz.org
Subject: Re: [PATCH 5/5][NFS] Cleanup explicit check for mandatory locks

Trond Myklebust wrote:
> On Mon, 2007-09-17 at 11:57 +0400, Pavel Emelyanov wrote:
>> The __mandatory_lock(inode) macro makes the same check, but
>> makes the code more readable.
> 
> Could we please avoid using underscores in macros. Also, why are we
> breaking the usual convention of capitalising macro names?

Sorry, I've forgot to change all the log - this is not a macro, 
but a static inline function. The underscores are here, because 
the mandatory_lock() one already exists and additionally checks 
for "if (IS_MANDLOCK(inode))"

Thanks,
Pavel

> Cheers
>   Trond
> 
>> Signed-off-by: Pavel Emelyanov <xemul@...nvz.org>
>> Cc: Trond Myklebust <trond.myklebust@....uio.no>
>>
>> ---
>>
>>  fs/nfs/file.c |    3 +--
>>  1 files changed, 1 insertion(+), 2 deletions(-)
>>
>> diff --git a/fs/nfs/file.c b/fs/nfs/file.c
>> index 73ddd2e..7a07be1 100644
>> --- a/fs/nfs/file.c
>> +++ b/fs/nfs/file.c
>> @@ -605,8 +605,7 @@ static int nfs_lock(struct file *filp, i
>>  	nfs_inc_stats(inode, NFSIOS_VFSLOCK);
>>  
>>  	/* No mandatory locks over NFS */
>> -	if ((inode->i_mode & (S_ISGID | S_IXGRP)) == S_ISGID &&
>> -	    fl->fl_type != F_UNLCK)
>> +	if (__mandatory_lock(inode) && fl->fl_type != F_UNLCK)
>>  		return -ENOLCK;
>>  
>>  	if (IS_GETLK(cmd))
>>
> 
> 

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