linux-kernel - Re: [PATCH 04/20] FIEMAP: don't bother with access

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Message-ID: <20200513190207.GV23230@ZenIV.linux.org.uk>
Date:   Wed, 13 May 2020 20:02:07 +0100
From:   Al Viro <viro@...iv.linux.org.uk>
To:     Christoph Hellwig <hch@...radead.org>
Cc:     linux-kernel@...r.kernel.org,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        linux-fsdevel@...r.kernel.org
Subject: Re: [PATCH 04/20] FIEMAP: don't bother with access_ok()

On Sun, May 10, 2020 at 12:02:41AM -0700, Christoph Hellwig wrote:
> On Sun, May 10, 2020 at 12:45:41AM +0100, Al Viro wrote:
> > From: Al Viro <viro@...iv.linux.org.uk>
> > 
> > we use copy_to_user() on that thing anyway (and always had).
> 
> I already have this patch in this series:
> 
> https://lore.kernel.org/linux-fsdevel/20200507145924.GA28854@lst.de/T/#t
> 
> which is waiting to be picked up [1], and also has some chance for conflicts
> due to changes next to the access_ok.
> 
> [1] except for the first two patches, which Ted plans to send for 5.7

I can drop this commit, of course, it's not a prereq for anything else in there.
Or I could pick your series into never-rebased branch, but it would complicate
the life wrt ext4 tree - up to you and Ted...