The quilt patch titled
Subject: mm: combine free_the_page() and free_unref_page()
has been removed from the -mm tree. Its filename was
mm-combine-free_the_page-and-free_unref_page.patch
This patch was dropped because it was merged into the mm-stable branch
of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
------------------------------------------------------
From: "Matthew Wilcox (Oracle)" <willy@xxxxxxxxxxxxx>
Subject: mm: combine free_the_page() and free_unref_page()
Date: Fri, 5 Apr 2024 16:32:24 +0100
The pcp_allowed_order() check in free_the_page() was only being skipped by
__folio_put_small() which is about to be rearranged.
Link: https://lkml.kernel.org/r/20240405153228.2563754-3-willy@xxxxxxxxxxxxx
Signed-off-by: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx>
Reviewed-by: Zi Yan <ziy@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/page_alloc.c | 25 +++++++++++--------------
1 file changed, 11 insertions(+), 14 deletions(-)
--- a/mm/page_alloc.c~mm-combine-free_the_page-and-free_unref_page
+++ a/mm/page_alloc.c
@@ -541,14 +541,6 @@ static inline bool pcp_allowed_order(uns
return false;
}
-static inline void free_the_page(struct page *page, unsigned int order)
-{
- if (pcp_allowed_order(order)) /* Via pcp? */
- free_unref_page(page, order);
- else
- __free_pages_ok(page, order, FPI_NONE);
-}
-
/*
* Higher-order pages are called "compound pages". They are structured thusly:
*
@@ -584,7 +576,7 @@ void destroy_large_folio(struct folio *f
folio_undo_large_rmappable(folio);
mem_cgroup_uncharge(folio);
- free_the_page(&folio->page, folio_order(folio));
+ free_unref_page(&folio->page, folio_order(folio));
}
static inline void set_buddy_order(struct page *page, unsigned int order)
@@ -2573,6 +2565,11 @@ void free_unref_page(struct page *page,
unsigned long pfn = page_to_pfn(page);
int migratetype;
+ if (!pcp_allowed_order(order)) {
+ __free_pages_ok(page, order, FPI_NONE);
+ return;
+ }
+
if (!free_pages_prepare(page, order))
return;
@@ -4755,11 +4752,11 @@ void __free_pages(struct page *page, uns
struct alloc_tag *tag = pgalloc_tag_get(page);
if (put_page_testzero(page))
- free_the_page(page, order);
+ free_unref_page(page, order);
else if (!head) {
pgalloc_tag_sub_pages(tag, (1 << order) - 1);
while (order-- > 0)
- free_the_page(page + (1 << order), order);
+ free_unref_page(page + (1 << order), order);
}
}
EXPORT_SYMBOL(__free_pages);
@@ -4821,7 +4818,7 @@ void __page_frag_cache_drain(struct page
VM_BUG_ON_PAGE(page_ref_count(page) == 0, page);
if (page_ref_sub_and_test(page, count))
- free_the_page(page, compound_order(page));
+ free_unref_page(page, compound_order(page));
}
EXPORT_SYMBOL(__page_frag_cache_drain);
@@ -4862,7 +4859,7 @@ refill:
goto refill;
if (unlikely(nc->pfmemalloc)) {
- free_the_page(page, compound_order(page));
+ free_unref_page(page, compound_order(page));
goto refill;
}
@@ -4906,7 +4903,7 @@ void page_frag_free(void *addr)
struct page *page = virt_to_head_page(addr);
if (unlikely(put_page_testzero(page)))
- free_the_page(page, compound_order(page));
+ free_unref_page(page, compound_order(page));
}
EXPORT_SYMBOL(page_frag_free);
_
Patches currently in -mm which might be from willy@xxxxxxxxxxxxx are
doc-improve-the-description-of-__folio_mark_dirty.patch
buffer-add-kernel-doc-for-block_dirty_folio.patch
buffer-add-kernel-doc-for-try_to_free_buffers.patch
buffer-fix-__bread-and-__bread_gfp-kernel-doc.patch
buffer-add-kernel-doc-for-brelse-and-__brelse.patch
buffer-add-kernel-doc-for-bforget-and-__bforget.patch
buffer-improve-bdev_getblk-documentation.patch
doc-split-bufferrst-out-of-api-summaryrst.patch
doc-split-bufferrst-out-of-api-summaryrst-fix.patch
mm-memory-failure-remove-fsdax_pgoff-argument-from-__add_to_kill.patch
mm-memory-failure-pass-addr-to-__add_to_kill.patch
mm-return-the-address-from-page_mapped_in_vma.patch
mm-make-page_mapped_in_vma-conditional-on-config_memory_failure.patch
mm-memory-failure-convert-shake_page-to-shake_folio.patch
mm-convert-hugetlb_page_mapping_lock_write-to-folio.patch
mm-memory-failure-convert-memory_failure-to-use-a-folio.patch
mm-memory-failure-convert-hwpoison_user_mappings-to-take-a-folio.patch
mm-memory-failure-add-some-folio-conversions-to-unpoison_memory.patch
mm-memory-failure-use-folio-functions-throughout-collect_procs.patch
mm-memory-failure-pass-the-folio-to-collect_procs_ksm.patch
fscrypt-convert-bh_get_inode_and_lblk_num-to-use-a-folio.patch
f2fs-convert-f2fs_clear_page_cache_dirty_tag-to-use-a-folio.patch
memory-failure-remove-calls-to-page_mapping.patch
migrate-expand-the-use-of-folio-in-__migrate_device_pages.patch
userfault-expand-folio-use-in-mfill_atomic_install_pte.patch
mm-remove-page_mapping.patch
mm-remove-page_cache_alloc.patch
mm-remove-put_devmap_managed_page.patch
mm-convert-put_devmap_managed_page_refs-to-put_devmap_managed_folio_refs.patch
mm-remove-page_ref_sub_return.patch
gup-use-folios-for-gup_devmap.patch
mm-add-kernel-doc-for-folio_mark_accessed.patch
mm-remove-pagereferenced.patch
mm-simplify-thp_vma_allowable_order.patch
