linux-kernel - Re: [PATCH 0/3] btrfs: Convert kmap/memset/kunmap to memzero

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Message-ID: <20210311155748.GR3014244@iweiny-DESK2.sc.intel.com>
Date:   Thu, 11 Mar 2021 07:57:48 -0800
From:   Ira Weiny <ira.weiny@...el.com>
To:     Andrew Morton <akpm@...ux-foundation.org>,
        David Sterba <dsterba@...e.com>
Cc:     Chris Mason <clm@...com>, Josef Bacik <josef@...icpanda.com>,
        linux-btrfs@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 0/3] btrfs: Convert kmap/memset/kunmap to memzero_user()

On Wed, Mar 10, 2021 at 03:58:36PM -0800, Andrew Morton wrote:
> On Tue,  9 Mar 2021 13:21:34 -0800 ira.weiny@...el.com wrote:
> 
> > Previously this was submitted to convert to zero_user()[1].  zero_user() is not
> > the same as memzero_user() and in fact some zero_user() calls may be better off
> > as memzero_user().  Regardless it was incorrect to convert btrfs to
> > zero_user().
> > 
> > This series corrects this by lifting memzero_user(), converting it to
> > kmap_local_page(), and then using it in btrfs.
> 
> This impacts btrfs more than MM.  I suggest the btrfs developers grab
> it, with my

I thought David wanted you to take these this time?

"I can play the messenger again but now it seems a round of review is needed
and with some testing it'll be possible in some -rc. At that point you may take
the patches via the mm tree, unless Linus is ok with a late pull."

	-- https://lore.kernel.org/lkml/20210224123049.GX1993@twin.jikos.cz/

But reading that again I'm not sure what he meant.

David?

Ira

> 
> Acked-by: Andrew Morton <akpm@...ux-foundation.org>
>