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-rw-r--r--drivers/dax/device.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/dax/device.c b/drivers/dax/device.c
index 95cfcfd612df..361a11089591 100644
--- a/drivers/dax/device.c
+++ b/drivers/dax/device.c
@@ -416,6 +416,7 @@ static vm_fault_t dev_dax_huge_fault(struct vm_fault *vmf,
if (rc == VM_FAULT_NOPAGE) {
unsigned long i;
+ pgoff_t pgoff;
/*
* In the device-dax case the only possibility for a
@@ -423,6 +424,8 @@ static vm_fault_t dev_dax_huge_fault(struct vm_fault *vmf,
* mapped. No need to consider the zero page, or racing
* conflicting mappings.
*/
+ pgoff = linear_page_index(vmf->vma, vmf->address
+ & ~(fault_size - 1));
for (i = 0; i < fault_size / PAGE_SIZE; i++) {
struct page *page;
@@ -430,6 +433,7 @@ static vm_fault_t dev_dax_huge_fault(struct vm_fault *vmf,
if (page->mapping)
continue;
page->mapping = filp->f_mapping;
+ page->index = pgoff + i;
}
}
dax_read_unlock(id);