linux-kernel - Re: [PATCH 03/10] mm: convert i_mmap

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Message-ID: <20141024224537.GA21108@node.dhcp.inet.fi>
Date:	Sat, 25 Oct 2014 01:45:37 +0300
From:	"Kirill A. Shutemov" <kirill@...temov.name>
To:	Davidlohr Bueso <dave@...olabs.net>
Cc:	akpm@...ux-foundation.org, hughd@...gle.com, riel@...hat.com,
	mgorman@...e.de, peterz@...radead.org, mingo@...nel.org,
	linux-kernel@...r.kernel.org, dbueso@...e.de, linux-mm@...ck.org
Subject: Re: [PATCH 03/10] mm: convert i_mmap_mutex to rwsem

On Fri, Oct 24, 2014 at 03:06:13PM -0700, Davidlohr Bueso wrote:
> diff --git a/mm/fremap.c b/mm/fremap.c
> index 72b8fa3..11ef7ec 100644
> --- a/mm/fremap.c
> +++ b/mm/fremap.c
> @@ -238,13 +238,13 @@ get_write_lock:
>  			}
>  			goto out_freed;
>  		}
> -		mutex_lock(&mapping->i_mmap_mutex);
> +		i_mmap_lock_write(mapping);
>  		flush_dcache_mmap_lock(mapping);
>  		vma->vm_flags |= VM_NONLINEAR;
>  		vma_interval_tree_remove(vma, &mapping->i_mmap);
>  		vma_nonlinear_insert(vma, &mapping->i_mmap_nonlinear);
>  		flush_dcache_mmap_unlock(mapping);
> -		mutex_unlock(&mapping->i_mmap_mutex);
> +		i_mmap_unlock_write(mapping);
>  	}
>  
>  	if (vma->vm_flags & VM_LOCKED) {

This should go to previous patch.

-- 
 Kirill A. Shutemov
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