linux-kernel - Re: [PATCH v5 08/10] mmap locking API: add MMAP_LOCK

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Message-ID: <20200519125656.GB189720@google.com>
Date:   Tue, 19 May 2020 05:56:56 -0700
From:   Michel Lespinasse <walken@...gle.com>
To:     Vlastimil Babka <vbabka@...e.cz>
Cc:     Andrew Morton <akpm@...ux-foundation.org>,
        linux-mm <linux-mm@...ck.org>,
        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 08/10] mmap locking API: add MMAP_LOCK_INITIALIZER

On Mon, May 18, 2020 at 12:45:06PM +0200, Vlastimil Babka wrote:
> On 4/22/20 2:14 AM, Michel Lespinasse wrote:
> > Define a new initializer for the mmap locking api.
> > Initially this just evaluates to __RWSEM_INITIALIZER as the API
> > is defined as wrappers around rwsem.
> > 
> > Signed-off-by: Michel Lespinasse <walken@...gle.com>
> 
> 
> Reviewed-by: Vlastimil Babka <vbabka@...e.cz>
> 
> 
> Nit below.
> 
> > +#define MMAP_LOCK_INITIALIZER(name) \
> > +	.mmap_sem = __RWSEM_INITIALIZER(name.mmap_sem),
> 
> "(name).mmap_sem" is safer in a macro?

Thanks, applied in next version.

-- 
Michel "Walken" Lespinasse
A program is never fully debugged until the last user dies.