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/arch/sh/mm/pgtable.c b/arch/sh/mm/pgtable.c
index 5c8f924..cf7ce4b 100644
--- a/arch/sh/mm/pgtable.c
+++ b/arch/sh/mm/pgtable.c
@@ -2,8 +2,6 @@
 #include <linux/mm.h>
 #include <linux/slab.h>
 
-#define PGALLOC_GFP GFP_KERNEL | __GFP_ZERO
-
 static struct kmem_cache *pgd_cachep;
 #if PAGETABLE_LEVELS > 2
 static struct kmem_cache *pmd_cachep;
@@ -13,6 +11,7 @@
 {
 	pgd_t *pgd = x;
 
+	memset(pgd, 0, USER_PTRS_PER_PGD * sizeof(pgd_t));
 	memcpy(pgd + USER_PTRS_PER_PGD,
 	       swapper_pg_dir + USER_PTRS_PER_PGD,
 	       (PTRS_PER_PGD - USER_PTRS_PER_PGD) * sizeof(pgd_t));
@@ -32,7 +31,7 @@
 
 pgd_t *pgd_alloc(struct mm_struct *mm)
 {
-	return kmem_cache_alloc(pgd_cachep, PGALLOC_GFP);
+	return kmem_cache_alloc(pgd_cachep, GFP_KERNEL);
 }
 
 void pgd_free(struct mm_struct *mm, pgd_t *pgd)
@@ -48,7 +47,7 @@
 
 pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long address)
 {
-	return kmem_cache_alloc(pmd_cachep, PGALLOC_GFP);
+	return kmem_cache_alloc(pmd_cachep, GFP_KERNEL | __GFP_ZERO);
 }
 
 void pmd_free(struct mm_struct *mm, pmd_t *pmd)