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@xxxxxxxxx>
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@xxxxxxxxx
Signed-off-by: Lorenzo Stoakes <lstoakes@xxxxxxxxx>
Cc: Arnd Bergmann <arnd@xxxxxxxx>
Cc: Christoph Hellwig <hch@xxxxxxxxxxxxx>
Cc: David Hildenbrand <david@xxxxxxxxxx>
Cc: Mel Gorman <mgorman@xxxxxxxxxxxxxxxxxxx>
Cc: Nicholas Piggin <npiggin@xxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Uladzislau Rezki (Sony) <urezki@xxxxxxxxx>
Cc: Vlastimil Babka <vbabka@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
--- 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@xxxxxxxxx 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
