linux-kernel - Re: [PATCH v2] xen-blkfront: Use the bitmap API when applicable

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Date:   Tue, 14 Dec 2021 18:57:48 +0100
From:   Christophe JAILLET <christophe.jaillet@...adoo.fr>
To:     Roger Pau Monné <roger.pau@...rix.com>
Cc:     boris.ostrovsky@...cle.com, jgross@...e.com,
        sstabellini@...nel.org, axboe@...nel.dk,
        xen-devel@...ts.xenproject.org, linux-block@...r.kernel.org,
        linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org
Subject: Re: [PATCH v2] xen-blkfront: Use the bitmap API when applicable

Le 14/12/2021 à 12:08, Roger Pau Monné a écrit :
> On Tue, Dec 14, 2021 at 11:59:39AM +0100, Roger Pau Monné wrote:
>> On Thu, Dec 02, 2021 at 09:16:04PM +0100, Christophe JAILLET wrote:
>>> Use 'bitmap_zalloc()' to simplify code, improve the semantic and avoid some
>>> open-coded arithmetic in allocator arguments.
>>>
>>> Also change the corresponding 'kfree()' into 'bitmap_free()' to keep
>>> consistency.
>>>
>>> Use 'bitmap_copy()' to avoid an explicit 'memcpy()'
>>>
>>> Signed-off-by: Christophe JAILLET <christophe.jaillet@...adoo.fr>
>>
>> Acked-by: Roger Pau Monné <roger.pau@...rix.com>
> 
> Oh, I see there's been further discussion on this to avoid relying
> implicitly on the size of the bitmap being rounded to the size of an
> unsigned long. I think a new version is expected then?
> 
> Thanks, Roger.
> 

Yes, I'll send a patch in order to add a 'bitmap_size()'
I'll update this patch when/if it is merged.

You can drop it for now.

CJ