linux-kernel - Re: [PATCH 01/12] mm: fix a comment in sys

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Date:   Mon, 10 Feb 2020 15:29:42 -0800
From:   Andrew Morton <akpm@...ux-foundation.org>
To:     Christoph Hellwig <hch@....de>
Cc:     linux-xfs@...r.kernel.org, linux-fsdevel@...r.kernel.org,
        Waiman Long <longman@...hat.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, Will Deacon <will@...nel.org>,
        linux-ext4@...r.kernel.org, cluster-devel@...hat.com,
        linux-kernel@...r.kernel.org, linux-mm@...ck.org,
        Naohiro Aota <naohiro.aota@....com>
Subject: Re: [PATCH 01/12] mm: fix a comment in sys_swapon

On Tue, 14 Jan 2020 17:12:14 +0100 Christoph Hellwig <hch@....de> wrote:

> claim_swapfile now always takes i_rwsem.
> 
> ...
>
> --- a/mm/swapfile.c
> +++ b/mm/swapfile.c
> @@ -3157,7 +3157,7 @@ SYSCALL_DEFINE2(swapon, const char __user *, specialfile, int, swap_flags)
>  	mapping = swap_file->f_mapping;
>  	inode = mapping->host;
>  
> -	/* If S_ISREG(inode->i_mode) will do inode_lock(inode); */
> +	/* will take i_rwsem; */
>  	error = claim_swapfile(p, inode);
>  	if (unlikely(error))
>  		goto bad_swap;

http://lkml.kernel.org/r/20200206090132.154869-1-naohiro.aota@wdc.com
removes this comment altogether.  Please check that this is OK?