On Wed, Mar 4, 2020 at 7:01 PM Vivek Goyal wrote:
>
> Hi,
>
> This patch series adds DAX support to virtiofs filesystem. This allows
> bypassing guest page cache and allows mapping host page cache directly
> in guest address space.
>
> When a page of file is needed, guest sends a request to map
On Wed, Mar 04, 2020 at 11:58:45AM -0500, Vivek Goyal wrote:
> Add logic to free up a busy memory range. Freed memory range will be
> returned to free pool. Add a worker which can be started to select
> and free some busy memory ranges.
>
> Process can also steal one of its busy dax ranges if
by all F: patterns in in each section.
Done via the perl script below and the previously posted
cvt_fallthrough.pl script.
Link:
https://lore.kernel.org/lkml/b56602fcf79f849e733e7b521bb0e17895d390fa.1582230379.git.joe.com/
These patches are based on next-20200310 and are available in
git://repo.o
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On Wed, 2020-03-04 at 12:06 +0100, Frederic Barrat wrote:
>
> Le 28/02/2020 à 07:12, Andrew Donnellan a écrit :
> > On 21/2/20 2:27 pm, Alastair D'Silva wrote:
> > > From: Alastair D'Silva
> > >
> > > When health & performance data is requested from the controller,
> > > it responds with an
On Wed, 2020-03-04 at 12:00 +0100, Frederic Barrat wrote:
>
> Le 21/02/2020 à 04:27, Alastair D'Silva a écrit :
> > From: Alastair D'Silva
> >
> > Some of the interrupts that the card generates are better handled
> > by the userspace daemon, in particular:
> > Controller Hardware/Firmware Fatal
Matteo,
> The macros PAGE_SECTORS, PAGE_SECTORS_SHIFT and SECTOR_MASK are
> defined several times in different flavours across the whole tree.
> Define them just once in a common header.
>
> While at it, replace replace "PAGE_SHIFT - 9" with
> "PAGE_SECTORS_SHIFT" too and rename SECTOR_MASK to
The macros PAGE_SECTORS, PAGE_SECTORS_SHIFT and SECTOR_MASK are defined
several times in different flavours across the whole tree.
Define them just once in a common header.
While at it, replace replace "PAGE_SHIFT - 9" with "PAGE_SECTORS_SHIFT" too
and rename SECTOR_MASK to PAGE_SECTORS_MASK.
On Wed, Mar 11, 2020 at 12:10 AM Guoqing Jiang
wrote:
>
>
>
> On 3/10/20 11:35 PM, Matteo Croce wrote:
> > +++ b/drivers/md/raid1.c
> > @@ -2129,7 +2129,7 @@ static void process_checks(struct r1bio *r1_bio)
> > int vcnt;
> >
> > /* Fix variable parts of all bios */
> > - vcnt =
On 3/10/20 11:35 PM, Matteo Croce wrote:
+++ b/drivers/md/raid1.c
@@ -2129,7 +2129,7 @@ static void process_checks(struct r1bio *r1_bio)
int vcnt;
/* Fix variable parts of all bios */
- vcnt = (r1_bio->sectors + PAGE_SIZE / 512 - 1) >> (PAGE_SHIFT - 9);
+ vcnt =
The macros PAGE_SECTORS, PAGE_SECTORS_SHIFT and SECTOR_MASK are defined
several times in different flavours across the whole tree.
Define them just once in a common header.
Signed-off-by: Matteo Croce
---
v2:
As Dan Williams suggested:
#define PAGE_SECTORS_MASK(~(PAGE_SECTORS - 1))
On Sun, Feb 23, 2020 at 8:58 AM Matteo Croce wrote:
>
> The macros PAGE_SECTORS, PAGE_SECTORS_SHIFT and SECTOR_MASK are defined
> several times in different flavours across the whole tree.
> Define them just once in a common header.
>
> Signed-off-by: Matteo Croce
> ---
> block/blk-lib.c
On Tue, Mar 10, 2020 at 08:49:49PM +0100, Miklos Szeredi wrote:
> On Wed, Mar 4, 2020 at 5:59 PM Vivek Goyal wrote:
> >
> > Introduce two new fuse commands to setup/remove memory mappings. This
> > will be used to setup/tear down file mapping in dax window.
> >
> > Signed-off-by: Vivek Goyal
> >
On Tue, Mar 10, 2020 at 08:19:07AM -0700, Ira Weiny wrote:
> On Wed, Mar 04, 2020 at 11:58:27AM -0500, Vivek Goyal wrote:
> >
> > + /* If end == 0, all pages from start to till end of file */
> > + if (!end) {
> > + end_idx = ULONG_MAX;
> > + len = 0;
>
> I find this a
On Wed, Mar 4, 2020 at 5:59 PM Vivek Goyal wrote:
>
> Introduce two new fuse commands to setup/remove memory mappings. This
> will be used to setup/tear down file mapping in dax window.
>
> Signed-off-by: Vivek Goyal
> Signed-off-by: Peng Tao
> ---
> include/uapi/linux/fuse.h | 37
On Wed, Mar 4, 2020 at 5:59 PM Vivek Goyal wrote:
>
> The device communicates FUSE_SETUPMAPPING/FUSE_REMOVMAPPING alignment
> constraints via the FUST_INIT map_alignment field. Parse this field and
> ensure our DAX mappings meet the alignment constraints.
>
> We don't actually align anything
On Wed, Mar 4, 2020 at 5:59 PM Vivek Goyal wrote:
>
> Divide the dax memory range into fixed size ranges (2MB for now) and put
> them in a list. This will track free ranges. Once an inode requires a
> free range, we will take one from here and put it in interval-tree
> of ranges assigned to
On Tue, Mar 10, 2020 at 07:12:25AM -0400, Michael S. Tsirkin wrote:
[..]
> > +static bool vp_get_shm_region(struct virtio_device *vdev,
> > + struct virtio_shm_region *region, u8 id)
> > +{
> > + struct virtio_pci_device *vp_dev = to_vp_device(vdev);
> > + struct
On Tue, Mar 10, 2020 at 11:04:37AM +, Stefan Hajnoczi wrote:
> On Wed, Mar 04, 2020 at 11:58:29AM -0500, Vivek Goyal wrote:
> > diff --git a/drivers/virtio/virtio_pci_modern.c
> > b/drivers/virtio/virtio_pci_modern.c
> > index 7abcc50838b8..52f179411015 100644
> > ---
On Wed, Mar 04, 2020 at 11:58:27AM -0500, Vivek Goyal wrote:
>
> + /* If end == 0, all pages from start to till end of file */
> + if (!end) {
> + end_idx = ULONG_MAX;
> + len = 0;
I find this a bit odd to specify end == 0 for ULONG_MAX...
> }
>
On Wed, Mar 4, 2020 at 5:59 PM Vivek Goyal wrote:
>
> Add a mount option to allow using dax with virtio_fs.
>
> Signed-off-by: Vivek Goyal
Reviewed-by: Miklos Szeredi
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On Wed, Mar 4, 2020 at 5:59 PM Vivek Goyal wrote:
>
> This option was introduced so that for virtio_fs we don't show any mounts
> options fuse_show_options(). Because we don't offer any of these options
> to be controlled by mounter.
>
> Very soon we are planning to introduce option "dax" which
On Wed, Mar 4, 2020 at 5:59 PM Vivek Goyal wrote:
>
> This reduces code duplication and make it little easier to read code.
>
> Signed-off-by: Vivek Goyal
Reviewed-by: Miklos Szeredi
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On Fri, Feb 28, 2020 at 11:34:50AM -0500, Vivek Goyal wrote:
> Hi,
>
> This is V6 of patches. These patches are also available at.
Hi Dan,
Ping. Does this patch series look fine to you?
Vivek
>
> Changes since V5:
>
> - Dan Williams preferred ->zero_page_range() to only accept PAGE_SIZE
>
On Wed, Mar 04, 2020 at 11:58:29AM -0500, Vivek Goyal wrote:
> From: Sebastien Boeuf
>
> On PCI the shm regions are found using capability entries;
> find a region by searching for the capability.
>
> Signed-off-by: Sebastien Boeuf
> Signed-off-by: Dr. David Alan Gilbert
> Signed-off-by:
On Wed, Mar 04, 2020 at 11:58:30AM -0500, Vivek Goyal wrote:
> From: Sebastien Boeuf
>
> On MMIO a new set of registers is defined for finding SHM
> regions. Add their definitions and use them to find the region.
>
> Signed-off-by: Sebastien Boeuf
> ---
> drivers/virtio/virtio_mmio.c |
On Wed, Mar 04, 2020 at 11:58:29AM -0500, Vivek Goyal wrote:
> diff --git a/drivers/virtio/virtio_pci_modern.c
> b/drivers/virtio/virtio_pci_modern.c
> index 7abcc50838b8..52f179411015 100644
> --- a/drivers/virtio/virtio_pci_modern.c
> +++ b/drivers/virtio/virtio_pci_modern.c
> @@ -443,6
On Wed, Mar 04, 2020 at 11:58:28AM -0500, Vivek Goyal wrote:
> From: Sebastien Boeuf
>
> Virtio defines 'shared memory regions' that provide a continuously
> shared region between the host and guest.
>
> Provide a method to find a particular region on a device.
>
> Signed-off-by: Sebastien
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