linux-kernel - Re: [PATCH 1/1] btrfs: incorrect handling for fiemap_fill_next

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Message-ID: <20150324222554.GZ20767@suse.cz>
Date:	Tue, 24 Mar 2015 23:25:54 +0100
From:	David Sterba <dsterba@...e.cz>
To:	Chengyu Song <csong84@...ech.edu>
Cc:	clm@...com, jbacik@...com, linux-btrfs@...r.kernel.org,
	linux-kernel@...r.kernel.org, taesoo@...ech.edu,
	changwoo@...ech.edu, sanidhya@...ech.edu, blee@...ech.edu
Subject: Re: [PATCH 1/1] btrfs: incorrect handling for
 fiemap_fill_next_extent return

On Tue, Mar 24, 2015 at 06:12:56PM -0400, Chengyu Song wrote:
> fiemap_fill_next_extent returns 0 on success, -errno on error, 1 if this was
> the last extent that will fit in user array. If 1 is returned, the return
> value may eventually returned to user space, which should not happen, according
> to manpage of ioctl.
> 
> Signed-off-by: Chengyu Song <csong84@...ech.edu>

Good catch, thanks.

Reviewed-by: David Sterba <dsterba@...e.cz>

Should go to stable.
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