Merge branch 'akpm' (patches from Andrew)

Merge misc updates from Andrew Morton:
 "173 patches.

  Subsystems affected by this series: ia64, ocfs2, block, and mm (debug,
  pagecache, gup, swap, shmem, memcg, selftests, pagemap, mremap,
  bootmem, sparsemem, vmalloc, kasan, pagealloc, memory-failure,
  hugetlb, userfaultfd, vmscan, compaction, mempolicy, memblock,
  oom-kill, migration, ksm, percpu, vmstat, and madvise)"

* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (173 commits)
  mm/madvise: add MADV_WILLNEED to process_madvise()
  mm/vmstat: remove unneeded return value
  mm/vmstat: simplify the array size calculation
  mm/vmstat: correct some wrong comments
  mm/percpu,c: remove obsolete comments of pcpu_chunk_populated()
  selftests: vm: add COW time test for KSM pages
  selftests: vm: add KSM merging time test
  mm: KSM: fix data type
  selftests: vm: add KSM merging across nodes test
  selftests: vm: add KSM zero page merging test
  selftests: vm: add KSM unmerge test
  selftests: vm: add KSM merge test
  mm/migrate: correct kernel-doc notation
  mm: wire up syscall process_mrelease
  mm: introduce process_mrelease system call
  memblock: make memblock_find_in_range method private
  mm/mempolicy.c: use in_task() in mempolicy_slab_node()
  mm/mempolicy: unify the create() func for bind/interleave/prefer-many policies
  mm/mempolicy: advertise new MPOL_PREFERRED_MANY
  mm/hugetlb: add support for mempolicy MPOL_PREFERRED_MANY
  ...

5 files changed, 11 insertions, 25 deletions

diff --git a/arch/microblaze/include/asm/page.h b/arch/microblaze/include/asm/page.h
index ce550978f4fc..4b8b2fa78fc5 100644
--- a/arch/microblaze/include/asm/page.h
+++ b/arch/microblaze/include/asm/page.h
@@ -112,8 +112,7 @@ extern int page_is_ram(unsigned long pfn);
 #  define page_to_phys(page)     (page_to_pfn(page) << PAGE_SHIFT)
 
 #  define ARCH_PFN_OFFSET	(memory_start >> PAGE_SHIFT)
-#  define pfn_valid(pfn)	((pfn) < (max_mapnr + ARCH_PFN_OFFSET))
-
+#  define pfn_valid(pfn)	((pfn) >= ARCH_PFN_OFFSET && (pfn) < (max_mapnr + ARCH_PFN_OFFSET))
 # endif /* __ASSEMBLY__ */
 
 #define	virt_addr_valid(vaddr)	(pfn_valid(virt_to_pfn(vaddr)))
diff --git a/arch/microblaze/include/asm/pgtable.h b/arch/microblaze/include/asm/pgtable.h
index 71cd547655d9..c136a01e467e 100644
--- a/arch/microblaze/include/asm/pgtable.h
+++ b/arch/microblaze/include/asm/pgtable.h
@@ -443,8 +443,6 @@ extern int mem_init_done;
 
 asmlinkage void __init mmu_init(void);
 
-void __init *early_get_page(void);
-
 #endif /* __ASSEMBLY__ */
 #endif /* __KERNEL__ */
 
diff --git a/arch/microblaze/kernel/syscalls/syscall.tbl b/arch/microblaze/kernel/syscalls/syscall.tbl
index 9be3ace12938..6b0e11362bd2 100644
--- a/arch/microblaze/kernel/syscalls/syscall.tbl
+++ b/arch/microblaze/kernel/syscalls/syscall.tbl
@@ -452,3 +452,5 @@
 444	common	landlock_create_ruleset		sys_landlock_create_ruleset
 445	common	landlock_add_rule		sys_landlock_add_rule
 446	common	landlock_restrict_self		sys_landlock_restrict_self
+# 447 reserved for memfd_secret
+448	common	process_mrelease		sys_process_mrelease
diff --git a/arch/microblaze/mm/init.c b/arch/microblaze/mm/init.c
index ab55c70380a5..952f35b335b2 100644
--- a/arch/microblaze/mm/init.c
+++ b/arch/microblaze/mm/init.c
@@ -265,18 +265,6 @@ asmlinkage void __init mmu_init(void)
 	dma_contiguous_reserve(memory_start + lowmem_size - 1);
 }
 
-/* This is only called until mem_init is done. */
-void __init *early_get_page(void)
-{
-	/*
-	 * Mem start + kernel_tlb -> here is limit
-	 * because of mem mapping from head.S
-	 */
-	return memblock_alloc_try_nid_raw(PAGE_SIZE, PAGE_SIZE,
-				MEMBLOCK_LOW_LIMIT, memory_start + kernel_tlb,
-				NUMA_NO_NODE);
-}
-
 void * __ref zalloc_maybe_bootmem(size_t size, gfp_t mask)
 {
 	void *p;
diff --git a/arch/microblaze/mm/pgtable.c b/arch/microblaze/mm/pgtable.c
index 38ccb909bc9d..c1833b159d3b 100644
--- a/arch/microblaze/mm/pgtable.c
+++ b/arch/microblaze/mm/pgtable.c
@@ -33,6 +33,7 @@
 #include <linux/init.h>
 #include <linux/mm_types.h>
 #include <linux/pgtable.h>
+#include <linux/memblock.h>
 
 #include <asm/pgalloc.h>
 #include <linux/io.h>
@@ -242,15 +243,13 @@ unsigned long iopa(unsigned long addr)
 
 __ref pte_t *pte_alloc_one_kernel(struct mm_struct *mm)
 {
-	pte_t *pte;
-	if (mem_init_done) {
-		pte = (pte_t *)__get_free_page(GFP_KERNEL | __GFP_ZERO);
-	} else {
-		pte = (pte_t *)early_get_page();
-		if (pte)
-			clear_page(pte);
-	}
-	return pte;
+	if (mem_init_done)
+		return (pte_t *)__get_free_page(GFP_KERNEL | __GFP_ZERO);
+	else
+		return memblock_alloc_try_nid(PAGE_SIZE, PAGE_SIZE,
+					      MEMBLOCK_LOW_LIMIT,
+					      memory_start + kernel_tlb,
+					      NUMA_NO_NODE);
 }
 
 void __set_fixmap(enum fixed_addresses idx, phys_addr_t phys, pgprot_t flags)