From: John Groves <[email protected]> Save the kva from memremap because we need it for iomap rw support.
Prior to famfs, there were no iomap users of /dev/dax - so the virtual address from memremap was not needed. Signed-off-by: John Groves <[email protected]> --- drivers/dax/dax-private.h | 2 ++ drivers/dax/fsdev.c | 1 + 2 files changed, 3 insertions(+) diff --git a/drivers/dax/dax-private.h b/drivers/dax/dax-private.h index 0867115aeef2..4ae4d829d3ee 100644 --- a/drivers/dax/dax-private.h +++ b/drivers/dax/dax-private.h @@ -69,6 +69,7 @@ struct dev_dax_range { * data while the device is activated in the driver. * @region - parent region * @dax_dev - core dax functionality + * @virt_addr: kva from memremap; used by fsdev_dax * @target_node: effective numa node if dev_dax memory range is onlined * @dyn_id: is this a dynamic or statically created instance * @id: ida allocated id when the dax_region is not static @@ -81,6 +82,7 @@ struct dev_dax_range { struct dev_dax { struct dax_region *region; struct dax_device *dax_dev; + void *virt_addr; unsigned int align; int target_node; bool dyn_id; diff --git a/drivers/dax/fsdev.c b/drivers/dax/fsdev.c index 29b7345f65b1..72f78f606e06 100644 --- a/drivers/dax/fsdev.c +++ b/drivers/dax/fsdev.c @@ -201,6 +201,7 @@ static int fsdev_dax_probe(struct dev_dax *dev_dax) pr_debug("%s: offset detected phys=%llx pgmap_phys=%llx offset=%llx\n", __func__, phys, pgmap_phys, data_offset); } + dev_dax->virt_addr = addr + data_offset; inode = dax_inode(dax_dev); cdev = inode->i_cdev; -- 2.52.0
