linux-kernel - Re: [RFC V1 02/31] mm/mmap: Clarify protection

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Message-ID: <1e06189a-7d69-7d6c-b9b4-3740604c371b@arm.com>
Date:   Thu, 27 Jan 2022 09:37:13 +0530
From:   Anshuman Khandual <anshuman.khandual@....com>
To:     Christoph Hellwig <hch@...radead.org>
Cc:     linux-mm@...ck.org, linux-kernel@...r.kernel.org,
        akpm@...ux-foundation.org
Subject: Re: [RFC V1 02/31] mm/mmap: Clarify protection_map[] indices



On 1/26/22 12:46 PM, Christoph Hellwig wrote:
>> +	[VM_NONE]				= __P000,
>> +	[VM_READ]				= __P001,
>> +	[VM_WRITE]				= __P010,
>> +	[VM_READ|VM_WRITE]			= __P011,
>> +	[VM_EXEC]				= __P100,
>> +	[VM_EXEC|VM_READ]			= __P101,
>> +	[VM_EXEC|VM_WRITE]			= __P110,
>> +	[VM_EXEC|VM_READ|VM_WRITE]		= __P111,
>> +	[VM_SHARED]				= __S000,
>> +	[VM_SHARED|VM_READ]			= __S001,
>> +	[VM_SHARED|VM_WRITE]			= __S010,
>> +	[VM_SHARED|VM_READ|VM_WRITE]		= __S011,
>> +	[VM_SHARED|VM_EXEC]			= __S100,
>> +	[VM_SHARED|VM_READ|VM_EXEC]		= __S101,
>> +	[VM_SHARED|VM_WRITE|VM_EXEC]		= __S110,
>> +	[VM_SHARED|VM_READ|VM_WRITE|VM_EXEC]	= __S111
> 
> Please add whitespaces around the | operators.

Sure, will add.

> 
> Otherwise looks good:
> 
> Reviewed-by: Christoph Hellwig <hch@....de>
>