Update Linux to v5.10.109

Sourced from [1]

[1] https://cdn.kernel.org/pub/linux/kernel/v5.x/linux-5.10.109.tar.xz

Change-Id: I19bca9fc6762d4e63bcf3e4cba88bbe560d9c76c
Signed-off-by: Olivier Deprez <olivier.deprez@arm.com>
diff --git a/drivers/misc/cxl/cxllib.c b/drivers/misc/cxl/cxllib.c
index 258c43a..2a1783f 100644
--- a/drivers/misc/cxl/cxllib.c
+++ b/drivers/misc/cxl/cxllib.c
@@ -207,7 +207,7 @@
 	struct vm_area_struct *vma = NULL;
 	int rc = 0;
 
-	down_read(&mm->mmap_sem);
+	mmap_read_lock(mm);
 
 	vma = find_vma(mm, addr);
 	if (!vma) {
@@ -218,7 +218,7 @@
 	*vma_start = vma->vm_start;
 	*vma_end = vma->vm_end;
 out:
-	up_read(&mm->mmap_sem);
+	mmap_read_unlock(mm);
 	return rc;
 }
 
@@ -245,9 +245,8 @@
 	     dar += page_size) {
 		if (dar < vma_start || dar >= vma_end) {
 			/*
-			 * We don't hold the mm->mmap_sem semaphore
-			 * while iterating, since the semaphore is
-			 * required by one of the lower-level page
+			 * We don't hold mm->mmap_lock while iterating, since
+			 * the lock is required by one of the lower-level page
 			 * fault processing functions and it could
 			 * create a deadlock.
 			 *