linux-kernel - Re: [PATCH 3/3] btrfs: set FS_SUPPORTS_SEEK

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Message-ID: <20150421084312.GA1088@infradead.org>
Date:	Tue, 21 Apr 2015 01:43:12 -0700
From:	Christoph Hellwig <hch@...radead.org>
To:	Al Viro <viro@...IV.linux.org.uk>
Cc:	Christoph Hellwig <hch@...radead.org>,
	David Howells <dhowells@...hat.com>, NeilBrown <neilb@...e.de>,
	Chris Mason <clm@...com>, Josef Bacik <jbacik@...com>,
	David Sterba <dsterba@...e.cz>,
	Dave Chinner <david@...morbit.com>,
	linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org,
	linux-btrfs@...r.kernel.org
Subject: Re: [PATCH 3/3] btrfs: set FS_SUPPORTS_SEEK_HOLE flag.

On Mon, Apr 20, 2015 at 01:58:35PM +0100, Al Viro wrote:
> > > Do ext4 and xfs support this, do you know?
> > 
> > Yes.  As do f2fs, ocfs2, gfs2, ceph and NFSv4.2
> 
> Er...  Nominally, gfs2 supports it.  By treating all files as "there's a
> hole starting at EOF".  Same as ext2 or even minix...

Yeah remove gfs2 from the list.
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