search for: dax

The functionality is identical to the one currently open coded in device-dax. Signed-off-by: Christoph Hellwig <hch at lst.de> --- drivers/dax/dax-private.h | 4 ---- drivers/dax/device.c | 43 --------------------------------------- 2 files changed, 47 deletions(-) diff --git a/drivers/dax/dax-private.h b/drivers/dax/dax-private.h index a45612148ca0..ed04a18...

The functionality is identical to the one currently open coded in device-dax. Signed-off-by: Christoph Hellwig <hch at lst.de> --- drivers/dax/dax-private.h | 4 ---- drivers/dax/device.c | 43 --------------------------------------- 2 files changed, 47 deletions(-) diff --git a/drivers/dax/dax-private.h b/drivers/dax/dax-private.h index b4177aafbbd1..c915889...

The functionality is identical to the one currently open coded in device-dax. Signed-off-by: Christoph Hellwig <hch at lst.de> --- drivers/dax/dax-private.h | 4 --- drivers/dax/device.c | 52 +-------------------------------------- 2 files changed, 1 insertion(+), 55 deletions(-) diff --git a/drivers/dax/dax-private.h b/drivers/dax/dax-private.h index a45612...

On Wed 10-04-19 09:38:24, Pankaj Gupta wrote: > This patch introduces 'daxdev_mapping_supported' helper > which checks if 'MAP_SYNC' is supported with filesystem > mapping. It also checks if corresponding dax_device is > synchronous. Virtio pmem device is asynchronous and > does not not support VM_SYNC. > > Suggested-by: Jan Kara <jack a...

On Thu, Jun 13, 2019 at 11:43:16AM +0200, Christoph Hellwig wrote: > The functionality is identical to the one currently open coded in > device-dax. > > Signed-off-by: Christoph Hellwig <hch at lst.de> > --- > drivers/dax/dax-private.h | 4 --- > drivers/dax/device.c | 52 +-------------------------------------- > 2 files changed, 1 insertion(+), 55 deletions(-) > > diff --git a/drivers/dax/dax-private.h...

On Tue, Apr 23, 2019 at 01:36:12PM +0530, Pankaj Gupta wrote: > Dont support 'MAP_SYNC' with non-DAX files and DAX files > with asynchronous dax_device. Virtio pmem provides > asynchronous host page cache flush mechanism. We don't > support 'MAP_SYNC' with virtio pmem and xfs. > > Signed-off-by: Pankaj Gupta <pagupta at redhat.com> > --- > fs/xfs/xfs_file.c...

On Tue, Apr 23, 2019 at 01:36:12PM +0530, Pankaj Gupta wrote: > Dont support 'MAP_SYNC' with non-DAX files and DAX files > with asynchronous dax_device. Virtio pmem provides > asynchronous host page cache flush mechanism. We don't > support 'MAP_SYNC' with virtio pmem and xfs. > > Signed-off-by: Pankaj Gupta <pagupta at redhat.com> > --- > fs/xfs/xfs_file.c...

On Wed, Jun 26, 2019 at 02:27:15PM +0200, Christoph Hellwig wrote: > The functionality is identical to the one currently open coded in > device-dax. > > Signed-off-by: Christoph Hellwig <hch at lst.de> > Reviewed-by: Ira Weiny <ira.weiny at intel.com> > --- > drivers/dax/dax-private.h | 4 ---- > drivers/dax/device.c | 43 --------------------------------------- > 2 files changed, 47 deletions(-) DanW:...

There are several places where ZONE_DEVICE struct pages assume a reference count == 1 means the page is idle and free. Instead of open coding this, add a helper function to hide this detail. Signed-off-by: Ralph Campbell <rcampbell at nvidia.com> --- fs/dax.c | 8 ++++---- fs/ext4/inode.c | 2 +- fs/xfs/xfs_file.c | 2 +- include/linux/dax.h | 5 +++++ 4 files changed, 11 insertions(+), 6 deletions(-) diff --git a/fs/dax.c b/fs/dax.c index 994ab66a9907..8eddbcc0e149 100644 --- a/fs/dax.c +++ b/fs/dax.c @@ -358,7 +358,7 @@ static void...

...t; > On Wed, Aug 21, 2019 at 7:38 PM Vivek Goyal <vgoyal at redhat.com> wrote: > > > > Hi, > > > > Here are the V3 patches for virtio-fs filesystem. This time I have > > broken the patch series in two parts. This is first part which does > > not contain DAX support. Second patch series will contain the patches > > for DAX support. > > > > I have also dropped RFC tag from first patch series as we believe its > > in good enough shape that it should get a consideration for inclusion > > upstream. > > > > These pa...

...t; > On Wed, Aug 21, 2019 at 7:38 PM Vivek Goyal <vgoyal at redhat.com> wrote: > > > > Hi, > > > > Here are the V3 patches for virtio-fs filesystem. This time I have > > broken the patch series in two parts. This is first part which does > > not contain DAX support. Second patch series will contain the patches > > for DAX support. > > > > I have also dropped RFC tag from first patch series as we believe its > > in good enough shape that it should get a consideration for inclusion > > upstream. > > > > These pa...

On Tue, May 21, 2019 at 6:43 AM Pankaj Gupta <pagupta at redhat.com> wrote: > > This patch sets dax device 'DAXDEV_SYNC' flag if all the target > devices of device mapper support synchrononous DAX. If device > mapper consists of both synchronous and asynchronous dax devices, > we don't set 'DAXDEV_SYNC' flag. > > Signed-off-by: Pankaj Gupta <pagupta at red...

On Tue, Apr 9, 2019 at 9:10 PM Pankaj Gupta <pagupta at redhat.com> wrote: > > This patch adds 'DAXDEV_SYNC' flag which is set > for nd_region doing synchronous flush. This later > is used to disable MAP_SYNC functionality for > ext4 & xfs filesystem for devices don't support > synchronous flush. > > Signed-off-by: Pankaj Gupta <pagupta at redhat.com> > ---...

..., Dan Williams wrote: > On Fri, Jun 28, 2019 at 8:39 AM Jason Gunthorpe <jgg at mellanox.com> wrote: > > > > On Wed, Jun 26, 2019 at 02:27:15PM +0200, Christoph Hellwig wrote: > > > The functionality is identical to the one currently open coded in > > > device-dax. > > > > > > Signed-off-by: Christoph Hellwig <hch at lst.de> > > > Reviewed-by: Ira Weiny <ira.weiny at intel.com> > > > drivers/dax/dax-private.h | 4 ---- > > > drivers/dax/device.c | 43 --------------------------------------- >...

This patch introduces 'daxdev_mapping_supported' helper which checks if 'MAP_SYNC' is supported with filesystem mapping. It also checks if corresponding dax_device is synchronous. Virtio pmem device is asynchronous and does not not support VM_SYNC. Suggested-by: Jan Kara <jack at suse.cz> Signed-off-by: P...

v2 -> v3: - Rebase on top of the other patches. Rich.

On Thu, Apr 25, 2019 at 10:03 PM Pankaj Gupta <pagupta at redhat.com> wrote: > > Dont support 'MAP_SYNC' with non-DAX files and DAX files > with asynchronous dax_device. Virtio pmem provides > asynchronous host page cache flush mechanism. We don't > support 'MAP_SYNC' with virtio pmem and xfs. > > Signed-off-by: Pankaj Gupta <pagupta at redhat.com> > --- > fs/xfs/xfs_file.c...

On Thu, Apr 25, 2019 at 10:03 PM Pankaj Gupta <pagupta at redhat.com> wrote: > > Dont support 'MAP_SYNC' with non-DAX files and DAX files > with asynchronous dax_device. Virtio pmem provides > asynchronous host page cache flush mechanism. We don't > support 'MAP_SYNC' with virtio pmem and xfs. > > Signed-off-by: Pankaj Gupta <pagupta at redhat.com> > --- > fs/xfs/xfs_file.c...

NOTE: not for upstream, yet. v1 -> v2: - Remove the dependency on enabling ACPI, since ACPI is now enabled all the time. Rich.

DAX is explained in detail here: https://lwn.net/Articles/610174/ This patch adds support to supermin for using a DAX root filesystem. The corresponding libguestfs patches will be posted shortly once I've tested them a bit more. This requires qemu >= 2.6. Unfortunately it's not really a w...