On Sep 13, 2015 4:25 PM, "Dave Chinner" wrote:
>
> On Tue, Sep 08, 2015 at 04:08:43PM -0700, Andy Lutomirski wrote:
> > Can we have a clean way to figure out whether two file ranges are the
> > same in a way that allows false negatives? I.e. return 1 if the
> > ranges are
On Tue, Sep 08, 2015 at 04:08:43PM -0700, Andy Lutomirski wrote:
> Can we have a clean way to figure out whether two file ranges are the
> same in a way that allows false negatives? I.e. return 1 if the
> ranges are reflinks of each other and 0 if not? Pretty please? I've
> implemented that in
On 2015-09-09 14:52, Anna Schumaker wrote:
On 09/08/2015 06:39 PM, Darrick J. Wong wrote:
On Tue, Sep 08, 2015 at 02:45:39PM -0700, Andy Lutomirski wrote:
On Tue, Sep 8, 2015 at 2:29 PM, Darrick J. Wong wrote:
On Tue, Sep 08, 2015 at 09:03:09PM +0100, Pádraig Brady
On 09/09/2015 05:16 PM, Darrick J. Wong wrote:
> On Wed, Sep 09, 2015 at 02:52:08PM -0400, Anna Schumaker wrote:
>> On 09/08/2015 06:39 PM, Darrick J. Wong wrote:
>>> On Tue, Sep 08, 2015 at 02:45:39PM -0700, Andy Lutomirski wrote:
On Tue, Sep 8, 2015 at 2:29 PM, Darrick J. Wong
On 2015-09-10 11:10, Anna Schumaker wrote:
On 09/09/2015 05:16 PM, Darrick J. Wong wrote:
On Wed, Sep 09, 2015 at 02:52:08PM -0400, Anna Schumaker wrote:
On 09/08/2015 06:39 PM, Darrick J. Wong wrote:
On Tue, Sep 08, 2015 at 02:45:39PM -0700, Andy Lutomirski wrote:
On Tue, Sep 8, 2015 at
On 09/08/2015 06:39 PM, Darrick J. Wong wrote:
> On Tue, Sep 08, 2015 at 02:45:39PM -0700, Andy Lutomirski wrote:
>> On Tue, Sep 8, 2015 at 2:29 PM, Darrick J. Wong
>> wrote:
>>> On Tue, Sep 08, 2015 at 09:03:09PM +0100, Pádraig Brady wrote:
On 08/09/15 20:10, Andy
On Wed, Sep 9, 2015 at 4:09 PM, Chris Mason wrote:
> On Tue, Sep 08, 2015 at 04:08:43PM -0700, Andy Lutomirski wrote:
>> On Tue, Sep 8, 2015 at 3:39 PM, Darrick J. Wong
>> wrote:
>> > On Tue, Sep 08, 2015 at 02:45:39PM -0700, Andy Lutomirski wrote:
>> >>
On Wed, Sep 9, 2015 at 1:09 PM, Chris Mason wrote:
> On Tue, Sep 08, 2015 at 04:08:43PM -0700, Andy Lutomirski wrote:
>> On Tue, Sep 8, 2015 at 3:39 PM, Darrick J. Wong
>> wrote:
>> > On Tue, Sep 08, 2015 at 02:45:39PM -0700, Andy Lutomirski wrote:
>> >>
On Wed, Sep 09, 2015 at 04:26:58PM -0400, Trond Myklebust wrote:
> On Wed, Sep 9, 2015 at 4:09 PM, Chris Mason wrote:
> > On Tue, Sep 08, 2015 at 04:08:43PM -0700, Andy Lutomirski wrote:
> >> On Tue, Sep 8, 2015 at 3:39 PM, Darrick J. Wong
> >> wrote:
> >>
On 09/09/2015 04:38 PM, Chris Mason wrote:
> On Wed, Sep 09, 2015 at 04:26:58PM -0400, Trond Myklebust wrote:
>> On Wed, Sep 9, 2015 at 4:09 PM, Chris Mason wrote:
>>> On Tue, Sep 08, 2015 at 04:08:43PM -0700, Andy Lutomirski wrote:
On Tue, Sep 8, 2015 at 3:39 PM, Darrick J.
On Wed, Sep 09, 2015 at 01:37:44PM -0700, Andy Lutomirski wrote:
> On Wed, Sep 9, 2015 at 1:09 PM, Chris Mason wrote:
> > On Tue, Sep 08, 2015 at 04:08:43PM -0700, Andy Lutomirski wrote:
> >> On Tue, Sep 8, 2015 at 3:39 PM, Darrick J. Wong
> >> wrote:
> >>
On Tue, Sep 08, 2015 at 04:08:43PM -0700, Andy Lutomirski wrote:
> On Tue, Sep 8, 2015 at 3:39 PM, Darrick J. Wong
> wrote:
> > On Tue, Sep 08, 2015 at 02:45:39PM -0700, Andy Lutomirski wrote:
> >> What I meant by this was: if you ask for "regular copy", you may end
> >>
On Wed, Sep 09, 2015 at 02:52:08PM -0400, Anna Schumaker wrote:
> On 09/08/2015 06:39 PM, Darrick J. Wong wrote:
> > On Tue, Sep 08, 2015 at 02:45:39PM -0700, Andy Lutomirski wrote:
> >> On Tue, Sep 8, 2015 at 2:29 PM, Darrick J. Wong
> >> wrote:
> >>> On Tue, Sep 08,
On Wed, Sep 09, 2015 at 04:41:34PM -0400, Anna Schumaker wrote:
> On 09/09/2015 04:38 PM, Chris Mason wrote:
> > On Wed, Sep 09, 2015 at 04:26:58PM -0400, Trond Myklebust wrote:
> >> On Wed, Sep 9, 2015 at 4:09 PM, Chris Mason wrote:
> >>> On Tue, Sep 08, 2015 at 04:08:43PM -0700,
On 08/09/15 20:10, Andy Lutomirski wrote:
> On Tue, Sep 8, 2015 at 11:23 AM, Anna Schumaker
> wrote:
>> On 09/08/2015 11:21 AM, Pádraig Brady wrote:
>>> I see copy_file_range() is a reflink() on BTRFS?
>>> That's a bit surprising, as it avoids the copy completely.
>>>
On Tue, Sep 8, 2015 at 11:23 AM, Anna Schumaker
wrote:
> On 09/08/2015 11:21 AM, Pádraig Brady wrote:
>> I see copy_file_range() is a reflink() on BTRFS?
>> That's a bit surprising, as it avoids the copy completely.
>> cp(1) for example considered doing a BTRFS clone by
On 09/08/2015 04:45 PM, Darrick J. Wong wrote:
> On Tue, Sep 08, 2015 at 11:08:03AM -0400, Anna Schumaker wrote:
>> On 09/05/2015 04:33 AM, Al Viro wrote:
>>> On Fri, Sep 04, 2015 at 04:25:27PM -0600, Andreas Dilger wrote:
>>>
This is a bit of a surprising result, since in my testing in the
On Tue, Sep 08, 2015 at 11:08:03AM -0400, Anna Schumaker wrote:
> On 09/05/2015 04:33 AM, Al Viro wrote:
> > On Fri, Sep 04, 2015 at 04:25:27PM -0600, Andreas Dilger wrote:
> >
> >> This is a bit of a surprising result, since in my testing in the
> >> past, copy_{to/from}_user() is a major
On Tue, Sep 08, 2015 at 09:03:09PM +0100, Pádraig Brady wrote:
> On 08/09/15 20:10, Andy Lutomirski wrote:
> > On Tue, Sep 8, 2015 at 11:23 AM, Anna Schumaker
> > wrote:
> >> On 09/08/2015 11:21 AM, Pádraig Brady wrote:
> >>> I see copy_file_range() is a reflink() on
On Tue, Sep 08, 2015 at 02:45:39PM -0700, Andy Lutomirski wrote:
> On Tue, Sep 8, 2015 at 2:29 PM, Darrick J. Wong
> wrote:
> > On Tue, Sep 08, 2015 at 09:03:09PM +0100, Pádraig Brady wrote:
> >> On 08/09/15 20:10, Andy Lutomirski wrote:
> >> > On Tue, Sep 8, 2015 at
On Tue, Sep 8, 2015 at 3:39 PM, Darrick J. Wong wrote:
> On Tue, Sep 08, 2015 at 02:45:39PM -0700, Andy Lutomirski wrote:
>> On Tue, Sep 8, 2015 at 2:29 PM, Darrick J. Wong
>> wrote:
>> > On Tue, Sep 08, 2015 at 09:03:09PM +0100, Pádraig Brady
On 04/09/15 21:16, Anna Schumaker wrote:
> Copy system calls came up during Plumbers a couple of weeks ago, because
> several filesystems (including NFS and XFS) are currently working on copy
> acceleration implementations. We haven't heard from Zach Brown in a while,
> so I volunteered to push
On Tue, Sep 08, 2015 at 04:08:43PM -0700, Andy Lutomirski wrote:
> On Tue, Sep 8, 2015 at 3:39 PM, Darrick J. Wong
> wrote:
> > On Tue, Sep 08, 2015 at 02:45:39PM -0700, Andy Lutomirski wrote:
> >> On Tue, Sep 8, 2015 at 2:29 PM, Darrick J. Wong
On 09/04/2015 06:25 PM, Andreas Dilger wrote:
> On Sep 4, 2015, at 2:16 PM, Anna Schumaker wrote:
>>
>> Copy system calls came up during Plumbers a couple of weeks ago,
>> because several filesystems (including NFS and XFS) are currently
>> working on copy acceleration
On Fri, Sep 04, 2015 at 04:25:27PM -0600, Andreas Dilger wrote:
> This is a bit of a surprising result, since in my testing in the
> past, copy_{to/from}_user() is a major consumer of CPU time (50%
> of a CPU core at 1GB/s). What backing filesystem did you test on?
While we are at it, was cp(1)
Copy system calls came up during Plumbers a couple of weeks ago, because
several filesystems (including NFS and XFS) are currently working on copy
acceleration implementations. We haven't heard from Zach Brown in a while,
so I volunteered to push his patches upstream so individual filesystems
On Sep 4, 2015, at 2:16 PM, Anna Schumaker wrote:
>
> Copy system calls came up during Plumbers a couple of weeks ago,
> because several filesystems (including NFS and XFS) are currently
> working on copy acceleration implementations. We haven't heard from
> Zach
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