linux-kernel - Re: [PATCH AUTOSEL 5.0 92/99] btrfs: Switch memory allocations in async csum calculation path to kvmalloc

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Message-ID: <20190507074919.GM20156@twin.jikos.cz>
Date:   Tue, 7 May 2019 09:49:19 +0200
From:   David Sterba <dsterba@...e.cz>
To:     Sasha Levin <sashal@...nel.org>
Cc:     linux-kernel@...r.kernel.org, stable@...r.kernel.org,
        Nikolay Borisov <nborisov@...e.com>,
        David Sterba <dsterba@...e.com>, linux-btrfs@...r.kernel.org
Subject: Re: [PATCH AUTOSEL 5.0 92/99] btrfs: Switch memory allocations in
 async csum calculation path to kvmalloc

On Tue, May 07, 2019 at 01:32:26AM -0400, Sasha Levin wrote:
> From: Nikolay Borisov <nborisov@...e.com>
> 
> [ Upstream commit a3d46aea46f99d134b4e0726e4826b824c3e5980 ]
> 
> Recent multi-page biovec rework allowed creation of bios that can span
> large regions - up to 128 megabytes in the case of btrfs.

Not necessary for 5.0/4.x as it depends on 5.1 changes.