Re: [PATCH 01/12] mm: fix a comment in sys_swapon

[Andrew Morton]

On Tue, 14 Jan 2020 17:12:14 +0100 Christoph Hellwig <hch@xxxxxx> 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@xxxxxxx
removes this comment altogether.  Please check that this is OK?