linux-kernel - Re: [PATCH] ipc/mqueue: simplify reading msgqueue limit

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Date:	Tue, 15 Nov 2011 19:10:50 -0500
From:	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>
To:	dave@....org
CC:	akpm@...ux-foundation.org, jslaby@...e.cz,
	gaowanlong@...fujitsu.com, npiggin@...nel.dk,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] ipc/mqueue: simplify reading msgqueue limit

On 11/7/2011 5:15 PM, Davidlohr Bueso wrote:
> ping?
> 
> On Thu, 2011-11-03 at 15:31 -0300, Davidlohr Bueso wrote:
>> From: Davidlohr Bueso <dave@....org>
>>
>> Because the current task is being used to get the limit, we can simply use rlimit() instead of task_rlimit().
>>
>> Signed-off-by: Davidlohr Bueso <dave@....org>

Sorry for the delay.

	Acked-by: KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>



>> ---
>>  ipc/mqueue.c |    3 +--
>>  1 files changed, 1 insertions(+), 2 deletions(-)
>>
>> diff --git a/ipc/mqueue.c b/ipc/mqueue.c
>> index 2e0ecfc..c0e4fbb 100644
>> --- a/ipc/mqueue.c
>> +++ b/ipc/mqueue.c
>> @@ -127,7 +127,6 @@ static struct inode *mqueue_get_inode(struct super_block *sb,
>>  
>>  	if (S_ISREG(mode)) {
>>  		struct mqueue_inode_info *info;
>> -		struct task_struct *p = current;
>>  		unsigned long mq_bytes, mq_msg_tblsz;
>>  
>>  		inode->i_fop = &mqueue_file_operations;
>> @@ -158,7 +157,7 @@ static struct inode *mqueue_get_inode(struct super_block *sb,
>>  
>>  		spin_lock(&mq_lock);
>>  		if (u->mq_bytes + mq_bytes < u->mq_bytes ||
>> -		    u->mq_bytes + mq_bytes > task_rlimit(p, RLIMIT_MSGQUEUE)) {
>> +		    u->mq_bytes + mq_bytes > rlimit(RLIMIT_MSGQUEUE)) {
>>  			spin_unlock(&mq_lock);
>>  			/* mqueue_evict_inode() releases info->messages */
>>  			ret = -EMFILE;
> 
> 
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