linux-kernel - Re: [PATCH v5 04/10] mmap locking API: use coccinelle to convert mmap

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Date:   Mon, 18 May 2020 11:36:54 +0200
From:   Vlastimil Babka <vbabka@...e.cz>
To:     Michel Lespinasse <walken@...gle.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        linux-mm <linux-mm@...ck.org>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Laurent Dufour <ldufour@...ux.ibm.com>,
        Matthew Wilcox <willy@...radead.org>,
        Liam Howlett <Liam.Howlett@...cle.com>,
        Jerome Glisse <jglisse@...hat.com>,
        Davidlohr Bueso <dave@...olabs.net>,
        David Rientjes <rientjes@...gle.com>,
        Hugh Dickins <hughd@...gle.com>, Ying Han <yinghan@...gle.com>,
        Jason Gunthorpe <jgg@...pe.ca>,
        Daniel Jordan <daniel.m.jordan@...cle.com>
Subject: Re: [PATCH v5 04/10] mmap locking API: use coccinelle to convert
 mmap_sem rwsem call sites

On 4/22/20 2:14 AM, Michel Lespinasse wrote:
> This change converts the existing mmap_sem rwsem calls to use the new
> mmap locking API instead.
> 
> The change is generated using coccinelle with the following rule:
> 
> // spatch --sp-file mmap_lock_api.cocci --in-place --include-headers --dir .
> 
> @@
> expression mm;
> @@
> (
> -init_rwsem
> +mmap_init_lock
> |
> -down_write
> +mmap_write_lock
> |
> -down_write_killable
> +mmap_write_lock_killable
> |
> -down_write_trylock
> +mmap_write_trylock
> |
> -up_write
> +mmap_write_unlock
> |
> -downgrade_write
> +mmap_write_downgrade
> |
> -down_read
> +mmap_read_lock
> |
> -down_read_killable
> +mmap_read_lock_killable
> |
> -down_read_trylock
> +mmap_read_trylock
> |
> -up_read
> +mmap_read_unlock
> )
> -(&mm->mmap_sem)
> +(mm)
> 
> Signed-off-by: Michel Lespinasse <walken@...gle.com>
> Reviewed-by: Daniel Jordan <daniel.m.jordan@...cle.com>

Reviewed-by: Vlastimil Babka <vbabka@...e.cz>