author: David S. Miller <davem@davemloft.net> 2018-08-05 13:04:31 -0700
committer: David S. Miller <davem@davemloft.net> 2018-08-05 13:04:31 -0700
commit: c1c8626fcebed467184ffd8de0ab5c9f9d9c3594
parent: d89d41556141a527030a15233135ba622ba3350d
Commit Summary:
Diffstat:
1 file changed, 10 insertions, 0 deletions
diff --git a/ipc/shm.c b/ipc/shm.c
index d4daf78df6da..fa1d322daa27 100644
--- a/ipc/shm.c
+++ b/ipc/shm.c
@@ -428,6 +428,17 @@ static int shm_split(struct vm_area_struct *vma, unsigned long addr)
return 0;
}
+static unsigned long shm_pagesize(struct vm_area_struct *vma)
+{
+ struct file *file = vma->vm_file;
+ struct shm_file_data *sfd = shm_file_data(file);
+
+ if (sfd->vm_ops->pagesize)
+ return sfd->vm_ops->pagesize(vma);
+
+ return PAGE_SIZE;
+}
+
#ifdef CONFIG_NUMA
static int shm_set_policy(struct vm_area_struct *vma, struct mempolicy *new)
{
@@ -555,6 +566,7 @@ static const struct vm_operations_struct shm_vm_ops = {
.close = shm_close, /* callback for when the vm-area is released */
.fault = shm_fault,
.split = shm_split,
+ .pagesize = shm_pagesize,
#if defined(CONFIG_NUMA)
.set_policy = shm_set_policy,
.get_policy = shm_get_policy,