The patch titled
Subject: mm/page_alloc: move free_the_page
has been added to the -mm tree. Its filename is
mm-page_alloc-move-free_the_page.patch
This patch should soon appear at
https://ozlabs.org/~akpm/mmots/broken-out/mm-page_alloc-move-free_the_page.patch
and later at
https://ozlabs.org/~akpm/mmotm/broken-out/mm-page_alloc-move-free_the_page.patch
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------------------------------------------------------
From: Mel Gorman <mgorman@xxxxxxxxxxxxxxxxxxx>
Subject: mm/page_alloc: move free_the_page
Patch series "Allow high order pages to be stored on PCP", v2.
The per-cpu page allocator (PCP) only handles order-0 pages. With the
series "Use local_lock for pcp protection and reduce stat overhead" and
"Calculate pcp->high based on zone sizes and active CPUs", it's now
feasible to store high-order pages on PCP lists.
This small series allows PCP to store "cheap" orders where cheap is
determined by PAGE_ALLOC_COSTLY_ORDER and THP-sized allocations.
This patch (of 2):
In the next page, free_compount_page is going to use the common helper
free_the_page. This patch moves the definition to ease review. No
functional change.
Link: https://lkml.kernel.org/r/20210603142220.10851-1-mgorman@xxxxxxxxxxxxxxxxxxx
Link: https://lkml.kernel.org/r/20210603142220.10851-2-mgorman@xxxxxxxxxxxxxxxxxxx
Signed-off-by: Mel Gorman <mgorman@xxxxxxxxxxxxxxxxxxx>
Acked-by: Vlastimil Babka <vbabka@xxxxxxx>
Cc: Dave Hansen <dave.hansen@xxxxxxxxxxxxxxx>
Cc: Jesper Dangaard Brouer <brouer@xxxxxxxxxx>
Cc: Michal Hocko <mhocko@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/page_alloc.c | 16 ++++++++--------
1 file changed, 8 insertions(+), 8 deletions(-)
--- a/mm/page_alloc.c~mm-page_alloc-move-free_the_page
+++ a/mm/page_alloc.c
@@ -687,6 +687,14 @@ out:
add_taint(TAINT_BAD_PAGE, LOCKDEP_NOW_UNRELIABLE);
}
+static inline void free_the_page(struct page *page, unsigned int order)
+{
+ if (order == 0) /* Via pcp? */
+ free_unref_page(page);
+ else
+ __free_pages_ok(page, order, FPI_NONE);
+}
+
/*
* Higher-order pages are called "compound pages". They are structured thusly:
*
@@ -5345,14 +5353,6 @@ unsigned long get_zeroed_page(gfp_t gfp_
}
EXPORT_SYMBOL(get_zeroed_page);
-static inline void free_the_page(struct page *page, unsigned int order)
-{
- if (order == 0) /* Via pcp? */
- free_unref_page(page);
- else
- __free_pages_ok(page, order, FPI_NONE);
-}
-
/**
* __free_pages - Free pages allocated with alloc_pages().
* @page: The page pointer returned from alloc_pages().
_
Patches currently in -mm which might be from mgorman@xxxxxxxxxxxxxxxxxxx are
mm-page_alloc-split-per-cpu-page-lists-and-zone-stats.patch
mm-page_alloc-split-per-cpu-page-lists-and-zone-stats-fix.patch
mm-page_alloc-split-per-cpu-page-lists-and-zone-stats-fix-fix.patch
mm-page_alloc-convert-per-cpu-list-protection-to-local_lock.patch
mm-page_alloc-convert-per-cpu-list-protection-to-local_lock-fix.patch
mm-vmstat-convert-numa-statistics-to-basic-numa-counters.patch
mm-vmstat-inline-numa-event-counter-updates.patch
mm-page_alloc-batch-the-accounting-updates-in-the-bulk-allocator.patch
mm-page_alloc-reduce-duration-that-irqs-are-disabled-for-vm-counters.patch
mm-page_alloc-explicitly-acquire-the-zone-lock-in-__free_pages_ok.patch
mm-page_alloc-avoid-conflating-irqs-disabled-with-zone-lock.patch
mm-page_alloc-update-pgfree-outside-the-zone-lock-in-__free_pages_ok.patch
mm-page_alloc-delete-vmpercpu_pagelist_fraction.patch
mm-page_alloc-disassociate-the-pcp-high-from-pcp-batch.patch
mm-page_alloc-disassociate-the-pcp-high-from-pcp-batch-fix-2.patch
mm-page_alloc-adjust-pcp-high-after-cpu-hotplug-events.patch
mm-page_alloc-scale-the-number-of-pages-that-are-batch-freed.patch
mm-page_alloc-limit-the-number-of-pages-on-pcp-lists-when-reclaim-is-active.patch
mm-page_alloc-introduce-vmpercpu_pagelist_high_fraction.patch
mm-page_alloc-introduce-vmpercpu_pagelist_high_fraction-fix.patch
mm-page_alloc-move-free_the_page.patch
mm-page_alloc-allow-high-order-pages-to-be-stored-on-the-per-cpu-lists.patch
mm-vmscan-remove-kerneldoc-like-comment-from-isolate_lru_pages.patch
mm-vmalloc-include-header-for-prototype-of-set_iounmap_nonlazy.patch
mm-page_alloc-make-should_fail_alloc_page-a-static-function-should_fail_alloc_page-static.patch
mm-mapping_dirty_helpers-remove-double-note-in-kerneldoc.patch
mm-memcontrolc-fix-kerneldoc-comment-for-mem_cgroup_calculate_protection.patch
mm-memory_hotplug-fix-kerneldoc-comment-for-__try_online_node.patch
mm-memory_hotplug-fix-kerneldoc-comment-for-__remove_memory.patch
mm-zbud-add-kerneldoc-fields-for-zbud_pool.patch
mm-z3fold-add-kerneldoc-fields-for-z3fold_pool.patch
mm-swap-make-swap_address_space-an-inline-function.patch
mm-mmap_lock-remove-dead-code-for-config_tracing-configurations.patch
mm-page_alloc-move-prototype-for-find_suitable_fallback.patch
mm-swap-make-node_data-an-inline-function-on-config_flatmem.patch
