Re: [PATCH 3/3] btrfs: set FS_SUPPORTS_SEEK_HOLE flag.

From: Al Viro
Date: Mon Apr 20 2015 - 08:58:51 EST


On Mon, Apr 20, 2015 at 02:48:55AM -0700, Christoph Hellwig wrote:
> On Mon, Apr 20, 2015 at 10:46:49AM +0100, David Howells wrote:
> > NeilBrown <neilb@xxxxxxx> wrote:
> >
> > > Missing patch 2 of the 3-patch series?
> >
> > Yes. :-)
> >
> > 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...
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