On Wed, May 22, 2019 at 02:38:48PM -0700, Brendan Higgins wrote:
> +Bjorn Helgaas
>
> On Wed, May 15, 2019 at 12:41 AM Daniel Vetter wrote:
> >
> > On Tue, May 14, 2019 at 11:36:18AM -0700, Brendan Higgins wrote:
> > > On Tue, May 14, 2019 at 02:05:05PM +0200, Daniel Vetter wrote:
> > > > On Tue,
On 5/22/19 12:51 AM, Darrick J. Wong wrote:
On Mon, Apr 29, 2019 at 12:26:35PM -0500, Goldwyn Rodrigues wrote:
From: Goldwyn Rodrigues
The IOMAP_DAX_COW is a iomap type which performs copy of
edges of data while performing a write if start/end are
not page aligned. The source address is exp
On 17:05 23/05, Shiyang Ruan wrote:
>
>
> On 5/22/19 12:51 AM, Darrick J. Wong wrote:
> > On Mon, Apr 29, 2019 at 12:26:35PM -0500, Goldwyn Rodrigues wrote:
> > > From: Goldwyn Rodrigues
> > >
> > > The IOMAP_DAX_COW is a iomap type which performs copy of
> > > edges of data while performing a
On Tue 21-05-19 10:46:25, Darrick J. Wong wrote:
> On Mon, Apr 29, 2019 at 12:26:39PM -0500, Goldwyn Rodrigues wrote:
> > From: Goldwyn Rodrigues
> >
> > Change dax_iomap_pfn to return the address as well in order to
> > use it for performing a memcpy in case the type is IOMAP_DAX_COW.
> > We don
On Mon 29-04-19 12:26:41, Goldwyn Rodrigues wrote:
> From: Goldwyn Rodrigues
>
> We replace the existing entry to the newly allocated one
> in case of CoW. Also, we mark the entry as PAGECACHE_TAG_TOWRITE
> so writeback marks this entry as writeprotected. This
> helps us snapshots so new write pa
On Mon 29-04-19 12:26:43, Goldwyn Rodrigues wrote:
> From: Adam Borowski
>
> Used by userspace to detect DAX.
> [rgold...@suse.com: Added CONFIG_FS_DAX around mmap_supported_flags]
Why the CONFIG_FS_DAX bit? Your mmap(2) implementation understands
implications of MAP_SYNC flag and that's all tha
On Mon 29-04-19 12:26:47, Goldwyn Rodrigues wrote:
> From: Goldwyn Rodrigues
>
> Inorder to make sure mmap'd files don't change after snapshot,
> writeprotect the mmap pages on snapshot. This is done by performing
> a data writeback on the pages (which simply mark the pages are
> wrprotected). Th
On 16:04 23/05, Jan Kara wrote:
> On Mon 29-04-19 12:26:47, Goldwyn Rodrigues wrote:
> > From: Goldwyn Rodrigues
> >
> > Inorder to make sure mmap'd files don't change after snapshot,
> > writeprotect the mmap pages on snapshot. This is done by performing
> > a data writeback on the pages (which
On Thu, May 23, 2019 at 03:44:49PM +0200, Jan Kara wrote:
> On Mon 29-04-19 12:26:43, Goldwyn Rodrigues wrote:
> > From: Adam Borowski
> >
> > Used by userspace to detect DAX.
> > [rgold...@suse.com: Added CONFIG_FS_DAX around mmap_supported_flags]
>
> Why the CONFIG_FS_DAX bit? Your mmap(2) imp
On Thu 23-05-19 10:27:22, Goldwyn Rodrigues wrote:
> On 16:04 23/05, Jan Kara wrote:
> > On Mon 29-04-19 12:26:47, Goldwyn Rodrigues wrote:
> > > From: Goldwyn Rodrigues
> > >
> > > Inorder to make sure mmap'd files don't change after snapshot,
> > > writeprotect the mmap pages on snapshot. This
On 21:07 23/05, Jan Kara wrote:
> On Thu 23-05-19 10:27:22, Goldwyn Rodrigues wrote:
> > On 16:04 23/05, Jan Kara wrote:
> > > On Mon 29-04-19 12:26:47, Goldwyn Rodrigues wrote:
> > > > From: Goldwyn Rodrigues
> > > >
> > > > Inorder to make sure mmap'd files don't change after snapshot,
> > > >
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