search for: dax_dev

...f9 100644 --- a/drivers/dax/bus.c +++ b/drivers/dax/bus.c @@ -388,7 +388,7 @@ struct dev_dax *__devm_create_dev_dax(struct dax_region *dax_region, int id, * No 'host' or dax_operations since there is no access to this * device outside of mmap of the resulting character device. */ - dax_dev = alloc_dax(dev_dax, NULL, NULL); + dax_dev = alloc_dax(dev_dax, NULL, NULL, true); if (!dax_dev) goto err; diff --git a/drivers/dax/super.c b/drivers/dax/super.c index 0a339b85133e..bd6509308d05 100644 --- a/drivers/dax/super.c +++ b/drivers/dax/super.c @@ -186,6 +186,8 @@ enum dax_device_f...

...82 100644 --- a/drivers/dax/bus.c +++ b/drivers/dax/bus.c @@ -388,7 +388,7 @@ struct dev_dax *__devm_create_dev_dax(struct dax_region *dax_region, int id, * No 'host' or dax_operations since there is no access to this * device outside of mmap of the resulting character device. */ - dax_dev = alloc_dax(dev_dax, NULL, NULL); + dax_dev = alloc_dax(dev_dax, NULL, NULL, DAXDEV_F_SYNC); if (!dax_dev) goto err; diff --git a/drivers/dax/super.c b/drivers/dax/super.c index 0a339b85133e..bd6509308d05 100644 --- a/drivers/dax/super.c +++ b/drivers/dax/super.c @@ -186,6 +186,8 @@ enum dax...

...82 100644 --- a/drivers/dax/bus.c +++ b/drivers/dax/bus.c @@ -388,7 +388,7 @@ struct dev_dax *__devm_create_dev_dax(struct dax_region *dax_region, int id, * No 'host' or dax_operations since there is no access to this * device outside of mmap of the resulting character device. */ - dax_dev = alloc_dax(dev_dax, NULL, NULL); + dax_dev = alloc_dax(dev_dax, NULL, NULL, DAXDEV_F_SYNC); if (!dax_dev) goto err; diff --git a/drivers/dax/super.c b/drivers/dax/super.c index bbd57ca0634a..b6c44b5062e9 100644 --- a/drivers/dax/super.c +++ b/drivers/dax/super.c @@ -186,6 +186,8 @@ enum dax...

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 at suse.cz> > Signed-off-by: Pankaj Gupta <pagupta at redhat.com> > --- > include/linux/dax.h | 23 +++++++++++++++++++++++ > 1 file ch...

...Use VIRTIO driver to register memory information with nvdimm_bus and create region_type accordingly. - Call VIRTIO flush from existing pmem driver. Pankaj Gupta (6): libnvdimm: nd_region flush callback support virtio-pmem: Add virtio-pmem guest driver libnvdimm: add nd_region buffered dax_dev flag dax: check synchronous mapping is supported ext4: disable map_sync for virtio pmem xfs: disable map_sync for virtio pmem [1] https://lkml.org/lkml/2019/4/10/3 [2] https://lkml.org/lkml/2019/4/3/394 [3] https://www.spinics.net/lists/kvm/msg149761.html [4] https://www.spinics.net/lists...

...restore functions - Remove BSD license text with SPDX license text - Add might_sleep() in virtio_pmem_flush - [Luiz] - Make spin_lock_irqsave() narrow Pankaj Gupta (7): libnvdimm: nd_region flush callback support virtio-pmem: Add virtio-pmem guest driver libnvdimm: add nd_region buffered dax_dev flag dax: check synchronous mapping is supported dm: dm: Enable synchronous dax ext4: disable map_sync for virtio pmem xfs: disable map_sync for virtio pmem [1] https://lkml.org/lkml/2019/6/12/624 [2] https://lkml.org/lkml/2019/6/11/831 [3] https://www.spinics.net/lists/kvm/msg149761.h...

...restore functions - Remove BSD license text with SPDX license text - Add might_sleep() in virtio_pmem_flush - [Luiz] - Make spin_lock_irqsave() narrow Pankaj Gupta (7): libnvdimm: nd_region flush callback support virtio-pmem: Add virtio-pmem guest driver libnvdimm: add nd_region buffered dax_dev flag dax: check synchronous mapping is supported dm: dm: Enable synchronous dax ext4: disable map_sync for virtio pmem xfs: disable map_sync for virtio pmem [1] https://lkml.org/lkml/2019/6/21/452 [2] https://lkml.org/lkml/2019/6/12/624 [3] https://www.spinics.net/lists/kvm/msg149761.h...

...+1203,14 @@ xfs_file_mmap( > > > > if (!IS_DAX(file_inode(filp)) && (vma->vm_flags & VM_SYNC)) > > > > return -EOPNOTSUPP; > > > > > > > > + /* We don't support synchronous mappings with DAX files if > > > > + * dax_device is not synchronous. > > > > + */ > > > > + if (IS_DAX(file_inode(filp)) && !dax_synchronous( > > > > + xfs_find_daxdev_for_inode(file_inode(filp))) && > > > > + (vma->vm_flags & VM_SYNC)) > > > > + return -...

...+1203,14 @@ xfs_file_mmap( > > > > if (!IS_DAX(file_inode(filp)) && (vma->vm_flags & VM_SYNC)) > > > > return -EOPNOTSUPP; > > > > > > > > + /* We don't support synchronous mappings with DAX files if > > > > + * dax_device is not synchronous. > > > > + */ > > > > + if (IS_DAX(file_inode(filp)) && !dax_synchronous( > > > > + xfs_find_daxdev_for_inode(file_inode(filp))) && > > > > + (vma->vm_flags & VM_SYNC)) > > > > + return -...

...restore functions - Remove BSD license text with SPDX license text - Add might_sleep() in virtio_pmem_flush - [Luiz] - Make spin_lock_irqsave() narrow Pankaj Gupta (7): libnvdimm: nd_region flush callback support virtio-pmem: Add virtio-pmem guest driver libnvdimm: add nd_region buffered dax_dev flag dax: check synchronous mapping is supported dm: dm: Enable synchronous dax ext4: disable map_sync for virtio pmem xfs: disable map_sync for virtio pmem [1] https://lkml.org/lkml/2019/5/21/569 [2] https://lkml.org/lkml/2019/5/14/465 [3] https://www.spinics.net/lists/kvm/msg149761.h...

...t; > if (!IS_DAX(file_inode(filp)) && (vma->vm_flags & VM_SYNC)) > > > > > > return -EOPNOTSUPP; > > > > > > > > > > > > + /* We don't support synchronous mappings with DAX files if > > > > > > + * dax_device is not synchronous. > > > > > > + */ > > > > > > + if (IS_DAX(file_inode(filp)) && !dax_synchronous( > > > > > > + xfs_find_daxdev_for_inode(file_inode(filp))) && > > > > > > + (vma->vm_flags & V...

...t; > if (!IS_DAX(file_inode(filp)) && (vma->vm_flags & VM_SYNC)) > > > > > > return -EOPNOTSUPP; > > > > > > > > > > > > + /* We don't support synchronous mappings with DAX files if > > > > > > + * dax_device is not synchronous. > > > > > > + */ > > > > > > + if (IS_DAX(file_inode(filp)) && !dax_synchronous( > > > > > > + xfs_find_daxdev_for_inode(file_inode(filp))) && > > > > > > + (vma->vm_flags & V...

...restore functions - Remove BSD license text with SPDX license text - Add might_sleep() in virtio_pmem_flush - [Luiz] - Make spin_lock_irqsave() narrow Pankaj Gupta (7): libnvdimm: nd_region flush callback support virtio-pmem: Add virtio-pmem guest driver libnvdimm: add nd_region buffered dax_dev flag dax: check synchronous mapping is supported dm: dm: Enable synchronous dax ext4: disable map_sync for virtio pmem xfs: disable map_sync for virtio pmem [1] https://lkml.org/lkml/2019/5/14/465 [2] https://lkml.org/lkml/2019/5/10/447 [3] https://www.spinics.net/lists/kvm/msg149761.h...

On Wed 10-04-19 09:38:23, Pankaj Gupta wrote: > @@ -64,6 +65,10 @@ static inline bool dax_write_cache_enabled(struct dax_device *dax_dev) > { > return false; > } > +static inline bool dax_synchronous(struct dax_device *dax_dev) > +{ > + return true; > +} Is there a need to define dax_synchronous() for !CONFIG_DAX? Because that property of dax device is pretty much undefined and I don't see a...

...ax/bus.c > @@ -388,7 +388,7 @@ struct dev_dax *__devm_create_dev_dax(struct dax_region *dax_region, int id, > * No 'host' or dax_operations since there is no access to this > * device outside of mmap of the resulting character device. > */ > - dax_dev = alloc_dax(dev_dax, NULL, NULL); > + dax_dev = alloc_dax(dev_dax, NULL, NULL, true); I find apis that take a boolean as unreadable. What does 'true' mean? It wastes time to go look at the function definition vs something like: alloc_dax(dev_dax, NULL, NULL, DAXDEV_F_SYNC);

...restore functions - Remove BSD license text with SPDX license text - Add might_sleep() in virtio_pmem_flush - [Luiz] - Make spin_lock_irqsave() narrow Pankaj Gupta (7): libnvdimm: nd_region flush callback support virtio-pmem: Add virtio-pmem guest driver libnvdimm: add nd_region buffered dax_dev flag dax: check synchronous mapping is supported dm: dm: Enable synchronous dax ext4: disable map_sync for virtio pmem xfs: disable map_sync for virtio pmem [1] https://lkml.org/lkml/2019/6/11/831 [2] https://lkml.org/lkml/2019/6/10/209 [3] https://www.spinics.net/lists/kvm/msg149761.h...

...007b75d9fd 100644 > --- a/drivers/md/dm.c > +++ b/drivers/md/dm.c > @@ -1969,7 +1969,8 @@ static struct mapped_device *alloc_dev(int minor) > sprintf(md->disk->disk_name, "dm-%d", minor); > > if (IS_ENABLED(CONFIG_DAX_DRIVER)) { > - dax_dev = alloc_dax(md, md->disk->disk_name, &dm_dax_ops); > + dax_dev = alloc_dax(md, md->disk->disk_name, &dm_dax_ops, > + DAXDEV_F_SYNC); Apologies for not realizing this until now, but this is broken. Imagin...

...007b75d9fd 100644 > --- a/drivers/md/dm.c > +++ b/drivers/md/dm.c > @@ -1969,7 +1969,8 @@ static struct mapped_device *alloc_dev(int minor) > sprintf(md->disk->disk_name, "dm-%d", minor); > > if (IS_ENABLED(CONFIG_DAX_DRIVER)) { > - dax_dev = alloc_dax(md, md->disk->disk_name, &dm_dax_ops); > + dax_dev = alloc_dax(md, md->disk->disk_name, &dm_dax_ops, > + DAXDEV_F_SYNC); Apologies for not realizing this until now, but this is broken. Imagin...

...restore functions - Remove BSD license text with SPDX license text - Add might_sleep() in virtio_pmem_flush - [Luiz] - Make spin_lock_irqsave() narrow Pankaj Gupta (7): libnvdimm: nd_region flush callback support virtio-pmem: Add virtio-pmem guest driver libnvdimm: add nd_region buffered dax_dev flag dax: check synchronous mapping is supported dm: dm: Enable synchronous dax ext4: disable map_sync for virtio pmem xfs: disable map_sync for virtio pmem [1] https://lkml.org/lkml/2019/5/10/447 [2] https://lkml.org/lkml/2019/4/26/36 [3] https://www.spinics.net/lists/kvm/msg149761.ht...

...Use VIRTIO driver to register memory information with nvdimm_bus and create region_type accordingly. - Call VIRTIO flush from existing pmem driver. Pankaj Gupta (6): libnvdimm: nd_region flush callback support virtio-pmem: Add virtio-pmem guest driver libnvdimm: add nd_region buffered dax_dev flag dax: check synchronous mapping is supported ext4: disable map_sync for virtio pmem xfs: disable map_sync for virtio pmem [1] https://lkml.org/lkml/2019/4/3/394 [2] https://lkml.org/lkml/2019/1/9/471 [3] https://www.spinics.net/lists/kvm/msg149761.html [4] https://www.spinics.net/list...