+ mm-prefer-xxx_page-alloc-free-functions-for-order-0-pages.patch added to mm-unstable branch

+ mm-prefer-xxx_page-alloc-free-functions-for-order-0-pages.patch added to mm-unstable branch

[Andrew Morton]

The patch titled
     Subject: mm: prefer xxx_page() alloc/free functions for order-0 pages
has been added to the -mm mm-unstable branch.  Its filename is
     mm-prefer-xxx_page-alloc-free-functions-for-order-0-pages.patch

This patch will shortly appear at
     https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-prefer-xxx_page-alloc-free-functions-for-order-0-pages.patch

This patch will later appear in the mm-unstable branch at
    git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

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------------------------------------------------------
From: Lorenzo Stoakes <lstoakes@gmail.com>
Subject: mm: prefer xxx_page() alloc/free functions for order-0 pages
Date: Mon, 13 Mar 2023 12:27:14 +0000

Update instances of alloc_pages(..., 0), __get_free_pages(..., 0) and
__free_pages(..., 0) to use alloc_page(), __get_free_page() and
__free_page() respectively in core code.

Link: https://lkml.kernel.org/r/50c48ca4789f1da2a65795f2346f5ae3eff7d665.1678710232.git.lstoakes@gmail.com
Signed-off-by: Lorenzo Stoakes <lstoakes@gmail.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: David Hildenbrand <david@redhat.com>
Cc: Mel Gorman <mgorman@techsingularity.net>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Uladzislau Rezki (Sony) <urezki@gmail.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---


--- a/include/asm-generic/pgalloc.h~mm-prefer-xxx_page-alloc-free-functions-for-order-0-pages
+++ a/include/asm-generic/pgalloc.h
@@ -123,11 +123,11 @@ static inline pmd_t *pmd_alloc_one(struc
 
 	if (mm == &init_mm)
 		gfp = GFP_PGTABLE_KERNEL;
-	page = alloc_pages(gfp, 0);
+	page = alloc_page(gfp);
 	if (!page)
 		return NULL;
 	if (!pgtable_pmd_page_ctor(page)) {
-		__free_pages(page, 0);
+		__free_page(page);
 		return NULL;
 	}
 	return (pmd_t *)page_address(page);
--- a/mm/debug_vm_pgtable.c~mm-prefer-xxx_page-alloc-free-functions-for-order-0-pages
+++ a/mm/debug_vm_pgtable.c
@@ -1048,7 +1048,7 @@ static void __init destroy_args(struct p
 
 	if (args->pte_pfn != ULONG_MAX) {
 		page = pfn_to_page(args->pte_pfn);
-		__free_pages(page, 0);
+		__free_page(page);
 
 		args->pte_pfn = ULONG_MAX;
 	}
@@ -1290,7 +1290,7 @@ static int __init init_args(struct pgtab
 		}
 	}
 
-	page = alloc_pages(GFP_KERNEL, 0);
+	page = alloc_page(GFP_KERNEL);
 	if (page)
 		args->pte_pfn = page_to_pfn(page);
 
--- a/mm/hugetlb_vmemmap.c~mm-prefer-xxx_page-alloc-free-functions-for-order-0-pages
+++ a/mm/hugetlb_vmemmap.c
@@ -400,7 +400,7 @@ static int alloc_vmemmap_page_list(unsig
 	return 0;
 out:
 	list_for_each_entry_safe(page, next, list, lru)
-		__free_pages(page, 0);
+		__free_page(page);
 	return -ENOMEM;
 }
 
--- a/mm/mmu_gather.c~mm-prefer-xxx_page-alloc-free-functions-for-order-0-pages
+++ a/mm/mmu_gather.c
@@ -32,7 +32,7 @@ static bool tlb_next_batch(struct mmu_ga
 	if (tlb->batch_count == MAX_GATHER_BATCH_COUNT)
 		return false;
 
-	batch = (void *)__get_free_pages(GFP_NOWAIT | __GFP_NOWARN, 0);
+	batch = (void *)__get_free_page(GFP_NOWAIT | __GFP_NOWARN);
 	if (!batch)
 		return false;
 
--- a/mm/page_alloc.c~mm-prefer-xxx_page-alloc-free-functions-for-order-0-pages
+++ a/mm/page_alloc.c
@@ -5558,7 +5558,7 @@ EXPORT_SYMBOL(__get_free_pages);
 
 unsigned long get_zeroed_page(gfp_t gfp_mask)
 {
-	return __get_free_pages(gfp_mask | __GFP_ZERO, 0);
+	return __get_free_page(gfp_mask | __GFP_ZERO);
 }
 EXPORT_SYMBOL(get_zeroed_page);
 
--- a/mm/vmalloc.c~mm-prefer-xxx_page-alloc-free-functions-for-order-0-pages
+++ a/mm/vmalloc.c
@@ -2739,7 +2739,7 @@ void vfree(const void *addr)
 		 * High-order allocs for huge vmallocs are split, so
 		 * can be freed as an array of order-0 allocations
 		 */
-		__free_pages(page, 0);
+		__free_page(page);
 		cond_resched();
 	}
 	atomic_long_sub(vm->nr_pages, &nr_vmalloc_pages);
_

Patches currently in -mm which might be from lstoakes@gmail.com are

mm-remove-unused-vmf_insert_mixed_prot.patch
mm-remove-vmf_insert_pfn_xxx_prot-for-huge-page-table-entries.patch
drm-ttm-remove-comment-referencing-now-removed-vmf_insert_mixed_prot.patch
mm-prefer-xxx_page-alloc-free-functions-for-order-0-pages.patch