On Wed, Nov 22, 2017 at 09:28:06AM +1100, Dave Chinner wrote:
> On Tue, Nov 21, 2017 at 04:52:53AM -0800, Matthew Wilcox wrote:
> > On Tue, Nov 21, 2017 at 05:48:15PM +1100, Dave Chinner wrote:
> > > On Mon, Nov 20, 2017 at 08:32:40PM -0800, Matthew Wilcox wrote:
> > > > On Mon, Nov 20, 2017 at
On Tue, Nov 21, 2017 at 04:52:53AM -0800, Matthew Wilcox wrote:
> On Tue, Nov 21, 2017 at 05:48:15PM +1100, Dave Chinner wrote:
> > On Mon, Nov 20, 2017 at 08:32:40PM -0800, Matthew Wilcox wrote:
> > > On Mon, Nov 20, 2017 at 05:37:53PM -0800, Darrick J. Wong wrote:
> > > > On Tue, Nov 21, 2017 at
On Tue, Nov 21, 2017 at 09:23:47AM -0800, Matthew Wilcox wrote:
> On Tue, Nov 21, 2017 at 09:27:49AM +1100, Dave Chinner wrote:
> > On Mon, Nov 20, 2017 at 01:51:00PM -0800, Matthew Wilcox wrote:
> > > If you want an example of it in use, I'm pretty happy with this patch
> > > that switches the
On Tue, Nov 21, 2017 at 09:27:49AM +1100, Dave Chinner wrote:
> On Mon, Nov 20, 2017 at 01:51:00PM -0800, Matthew Wilcox wrote:
> > If you want an example of it in use, I'm pretty happy with this patch
> > that switches the brd driver entirely from the radix tree API to the
> > xarray API:
> >
>
On Tue, Nov 21, 2017 at 05:48:15PM +1100, Dave Chinner wrote:
> On Mon, Nov 20, 2017 at 08:32:40PM -0800, Matthew Wilcox wrote:
> > On Mon, Nov 20, 2017 at 05:37:53PM -0800, Darrick J. Wong wrote:
> > > On Tue, Nov 21, 2017 at 09:27:49AM +1100, Dave Chinner wrote:
> > > > First thing I noticed was
On Mon, Nov 20, 2017 at 08:32:40PM -0800, Matthew Wilcox wrote:
> On Mon, Nov 20, 2017 at 05:37:53PM -0800, Darrick J. Wong wrote:
> > On Tue, Nov 21, 2017 at 09:27:49AM +1100, Dave Chinner wrote:
> > > First thing I noticed was that "xa" as a prefix is already quite
> > > widely used in XFS -
On Mon, Nov 20, 2017 at 05:37:53PM -0800, Darrick J. Wong wrote:
> On Tue, Nov 21, 2017 at 09:27:49AM +1100, Dave Chinner wrote:
> > First thing I noticed was that "xa" as a prefix is already quite
> > widely used in XFS - it's shorthand for "XFS AIL". Indeed, xa_lock
> > already exists and is
On Tue, Nov 21, 2017 at 09:27:49AM +1100, Dave Chinner wrote:
> On Mon, Nov 20, 2017 at 01:51:00PM -0800, Matthew Wilcox wrote:
> > On Tue, Nov 21, 2017 at 07:26:06AM +1100, Dave Chinner wrote:
> > > On Mon, Nov 20, 2017 at 08:18:29AM -0800, Matthew Wilcox wrote:
> > > > On Fri, Nov 17, 2017 at
On Mon, Nov 20, 2017 at 01:51:00PM -0800, Matthew Wilcox wrote:
> On Tue, Nov 21, 2017 at 07:26:06AM +1100, Dave Chinner wrote:
> > On Mon, Nov 20, 2017 at 08:18:29AM -0800, Matthew Wilcox wrote:
> > > On Fri, Nov 17, 2017 at 11:39:25AM -0800, Darrick J. Wong wrote:
> > > > If two programs
On Tue, Nov 21, 2017 at 07:26:06AM +1100, Dave Chinner wrote:
> On Mon, Nov 20, 2017 at 08:18:29AM -0800, Matthew Wilcox wrote:
> > On Fri, Nov 17, 2017 at 11:39:25AM -0800, Darrick J. Wong wrote:
> > > If two programs simultaneously try to write to the same part of a file
> > > via direct IO and
On Mon, Nov 20, 2017 at 08:18:29AM -0800, Matthew Wilcox wrote:
> On Fri, Nov 17, 2017 at 11:39:25AM -0800, Darrick J. Wong wrote:
> > If two programs simultaneously try to write to the same part of a file
> > via direct IO and buffered IO, there's a chance that the post-diowrite
> > pagecache
On Fri, Nov 17, 2017 at 11:39:25AM -0800, Darrick J. Wong wrote:
> If two programs simultaneously try to write to the same part of a file
> via direct IO and buffered IO, there's a chance that the post-diowrite
> pagecache invalidation will fail on the dirty page. When this happens,
> the dio
On Fri, Nov 17, 2017 at 11:39:25AM -0800, Darrick J. Wong wrote:
> From: Darrick J. Wong
>
> If two programs simultaneously try to write to the same part of a file
> via direct IO and buffered IO, there's a chance that the post-diowrite
> pagecache invalidation will fail
From: Darrick J. Wong
If two programs simultaneously try to write to the same part of a file
via direct IO and buffered IO, there's a chance that the post-diowrite
pagecache invalidation will fail on the dirty page. When this happens,
the dio write succeeded, which
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