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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-...

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-...

On Tue, Jun 11 2019 at 12:37pm -0400, 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. > &g...

On Wed, 10 Apr 2019 10:03:01 -0400 (EDT) Pankaj Gupta <pagupta at redhat.com> wrote: > > > > On Wed, Apr 10, 2019 at 09:38:22AM +0530, Pankaj Gupta wrote: > > > This patch adds virtio-pmem driver for KVM guest. > > > > > > Guest reads the persistent memory range information from > > > Qemu over VIRTIO and...

On Wed, 10 Apr 2019 10:03:01 -0400 (EDT) Pankaj Gupta <pagupta at redhat.com> wrote: > > > > On Wed, Apr 10, 2019 at 09:38:22AM +0530, Pankaj Gupta wrote: > > > This patch adds virtio-pmem driver for KVM guest. > > > > > > Guest reads the persistent memory range information from > > > Qemu over VIRTIO and...

On Fri, May 10, 2019 at 8:53 AM 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-...

On Fri, May 10, 2019 at 8:53 AM 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-...

On Tue, Apr 9, 2019 at 9:09 PM Pankaj Gupta <pagupta at redhat.com> wrote: > > This patch adds functionality to perform flush from guest > to host over VIRTIO. We are registering a callback based > on 'nd_region' type. virtio_pmem driver requires this special > flush function. For rest of the region types we are registering...

On Tue, Apr 9, 2019 at 9:09 PM Pankaj Gupta <pagupta at redhat.com> wrote: > > This patch adds functionality to perform flush from guest > to host over VIRTIO. We are registering a callback based > on 'nd_region' type. virtio_pmem driver requires this special > flush function. For rest of the region types we are registering...

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....

Jan Kara <jack at suse.cz> writes: > On Thu 11-04-19 07:51:48, Dan Williams wrote: >> On Tue, Apr 9, 2019 at 9:09 PM Pankaj Gupta <pagupta at redhat.com> wrote: >> > + } else { >> > + if (nd_region->flush(nd_region)) >> > + rc = -EIO; >> >> Given the common case wants to be fast and synchronous I think we >> should try to avoid retpoline over...

Jan Kara <jack at suse.cz> writes: > On Thu 11-04-19 07:51:48, Dan Williams wrote: >> On Tue, Apr 9, 2019 at 9:09 PM Pankaj Gupta <pagupta at redhat.com> wrote: >> > + } else { >> > + if (nd_region->flush(nd_region)) >> > + rc = -EIO; >> >> Given the common case wants to be fast and synchronous I think we >> should try to avoid retpoline over...

...a 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 | 10 ++++++---- > 1 file changed, 6 insertions(+), 4 deletions(-) > > diff --git a/fs/xfs/xfs_file.c b/fs/xfs/xfs_file.c > index 1f2e2845eb76..0e59be018511 100644 > --- a/fs/xfs/xfs_file.c > +++ b/fs/xfs/xfs_file.c > @@ -1196...

...a 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 | 10 ++++++---- > 1 file changed, 6 insertions(+), 4 deletions(-) > > diff --git a/fs/xfs/xfs_file.c b/fs/xfs/xfs_file.c > index 1f2e2845eb76..0e59be018511 100644 > --- a/fs/xfs/xfs_file.c > +++ b/fs/xfs/xfs_file.c > @@ -1196...

On Thu, Apr 25, 2019 at 10:02 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-...

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-...

This patch series fixes the issue with unplug/replug of a port in virtio console driver which fails with an error "Error allocating inbufs\n". Patch 1 makes use of 'virtqueue_detach_unused_buf' function to detach the unused buffers during port hotunplug time. Patch 2 updates the next avail index for packed ring code. Tested the packed ring code with the qemu virtio 1.1 device

On Wed, 12 Jun 2019 18:15:22 +0530 Pankaj Gupta <pagupta at redhat.com> wrote: > This patch adds virtio-pmem driver for KVM guest. > > Guest reads the persistent memory range information from > Qemu over VIRTIO and registers it on nvdimm_bus. It also > creates a nd_region object with the persistent memory > range information so tha...

..._reset because virtio device is still active. This was the working behaviour before the change introduced in commit b3258ff1d6. Reported-by: Xiaohui Li <xiaohli at redhat.com> Fixes: b3258ff1d6 ("virtio_console: free buffers after reset") Signed-off-by: Pankaj Gupta <pagupta at redhat.com> --- drivers/char/virtio_console.c | 14 +++++++++++--- 1 file changed, 11 insertions(+), 3 deletions(-) diff --git a/drivers/char/virtio_console.c b/drivers/char/virtio_console.c index fbeb71953526..5fbf2ac73111 100644 --- a/drivers/char/virtio_console.c +++ b/drivers/char/virti...

..._reset because virtio device is still active. This was the working behaviour before the change introduced in commit b3258ff1d6. Reported-by: Xiaohui Li <xiaohli at redhat.com> Fixes: b3258ff1d6 ("virtio_console: free buffers after reset") Signed-off-by: Pankaj Gupta <pagupta at redhat.com> --- drivers/char/virtio_console.c | 14 +++++++++++--- 1 file changed, 11 insertions(+), 3 deletions(-) diff --git a/drivers/char/virtio_console.c b/drivers/char/virtio_console.c index fbeb71953526..5fbf2ac73111 100644 --- a/drivers/char/virtio_console.c +++ b/drivers/char/virti...