ipc/shm.c: add split function to shm_vm_ops

[GitHub/LineageOS/android_kernel_motorola_exynos9610.git] / ipc / shm.c

diff --git a/ipc/shm.c b/ipc/shm.c
index bd652755d32cc6fee7598b7a8dc257bd65e0c807..b469e910f887da42c2be0edfe8955cf78c79e2f8 100644 (file)
--- a/ipc/shm.c
+++ b/ipc/shm.c
@@ -386,6 +386,17 @@ static int shm_fault(struct vm_fault *vmf)
        return sfd->vm_ops->fault(vmf);
 }
 
+static int shm_split(struct vm_area_struct *vma, unsigned long addr)
+{
+       struct file *file = vma->vm_file;
+       struct shm_file_data *sfd = shm_file_data(file);
+
+       if (sfd->vm_ops && sfd->vm_ops->split)
+               return sfd->vm_ops->split(vma, addr);
+
+       return 0;
+}
+
 #ifdef CONFIG_NUMA
 static int shm_set_policy(struct vm_area_struct *vma, struct mempolicy *new)
 {
@@ -510,6 +521,7 @@ static const struct vm_operations_struct shm_vm_ops = {
        .open   = shm_open,     /* callback for a new vm-area open */
        .close  = shm_close,    /* callback for when the vm-area is released */
        .fault  = shm_fault,
+       .split  = shm_split,
 #if defined(CONFIG_NUMA)
        .set_policy = shm_set_policy,
        .get_policy = shm_get_policy,