From: Dave Chinner <david@fromorbit.com>
To: Eric Sandeen <sandeen@sandeen.net>
Cc: xfs-oss <xfs@oss.sgi.com>
Subject: Re: [PATCH 2/2] xfs_io: configure tests for preadv/pwritev & sync_file_range
Date: Wed, 10 Oct 2012 09:56:20 +1100 [thread overview]
Message-ID: <20121009225620.GU23644@dastard> (raw)
In-Reply-To: <5074A5FE.50101@sandeen.net>
On Tue, Oct 09, 2012 at 05:32:30PM -0500, Eric Sandeen wrote:
> On 10/9/12 5:28 PM, Dave Chinner wrote:
> > On Tue, Oct 09, 2012 at 05:08:26PM -0500, Eric Sandeen wrote:
> >> On older systems we may not have preadv/pwritev and/or
> >> sync_file_range.
> >>
> >> Add the configure magic, and stub out the code
> >> where needed.
> >>
> >> (sync_file_range just needed a better test; preadv/pwritev
> >> took a little more rearranging)
> >>
> >> And fix a couple typos ("numberic") while we're at it.
> >>
> >> Signed-off-by: Eric Sandeen <sandeen@redhat.com>
> >
> > Looks fine, though the "HAVE_PREADV" in the pwritev case is a bit
> > wierd. Perhaps doing this:
> >
> >> diff --git a/include/builddefs.in b/include/builddefs.in
> >> index 81ebfcd..4a0e910 100644
> >> --- a/include/builddefs.in
> >> +++ b/include/builddefs.in
> >> @@ -101,6 +101,8 @@ HAVE_GETMNTENT = @have_getmntent@
> >> HAVE_GETMNTINFO = @have_getmntinfo@
> >> HAVE_FALLOCATE = @have_fallocate@
> >> HAVE_FIEMAP = @have_fiemap@
> >> +HAVE_PREADV = @have_preadv@
> >
> > HAVE_PWRITEV = @have_preadv@
> >
> > Would reduce that wierdness a bit when looking at the pwritev
> > code....
>
> Yeah I was a little unhappy w/ that. But I think then we'd also need:
>
> +ifeq ($(HAVE_PWRITEV),yes)
> +LCFLAGS += -DHAVE_PWRITEV
> +endif
True.
> and at some point we might run out of room on the cmdline ;)
Unlikely ;)
> Could change it to HAVE_PREADWRITEV or something ...
HAVE_VECTORED_IO?
Cheers,
Dave.
--
Dave Chinner
david@fromorbit.com
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next prev parent reply other threads:[~2012-10-09 22:54 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-10-09 22:02 [PATCH 1/2] xfs_io: include headers for preadv/pwritev Eric Sandeen
2012-10-09 22:08 ` [PATCH 2/2] xfs_io: configure tests for preadv/pwritev & sync_file_range Eric Sandeen
2012-10-09 22:28 ` Dave Chinner
2012-10-09 22:32 ` Eric Sandeen
2012-10-09 22:56 ` Dave Chinner [this message]
2012-10-09 22:57 ` Eric Sandeen
2012-10-09 23:05 ` Dave Chinner
2012-10-10 3:40 ` [PATCH 2/2 V2] " Eric Sandeen
2012-10-10 23:25 ` Dave Chinner
2012-10-09 22:21 ` [PATCH 1/2] xfs_io: include headers for preadv/pwritev Dave Chinner
2012-10-10 3:37 ` [PATCH 1/2 V2] " Eric Sandeen
2012-10-10 23:24 ` Dave Chinner
2012-10-11 20:40 ` [PATCH 1/2] " Mark Tinguely
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