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authorMel Gorman <mgorman@techsingularity.net>2021-06-29 05:42:36 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2021-06-29 20:53:55 +0300
commit21d02f8f8464e27434f477c73431075197a9f72f (patch)
treedc80b23d4f32d1b993fce097068dbfad5e18ccfd /mm/page_alloc.c
parentf7ec104458e00d27a190348ac3a513f3df3699a4 (diff)
downloadlinux-21d02f8f8464e27434f477c73431075197a9f72f.tar.xz
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@techsingularity.net Link: https://lkml.kernel.org/r/20210603142220.10851-2-mgorman@techsingularity.net Signed-off-by: Mel Gorman <mgorman@techsingularity.net> Acked-by: Vlastimil Babka <vbabka@suse.cz> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: Jesper Dangaard Brouer <brouer@redhat.com> Cc: Michal Hocko <mhocko@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/page_alloc.c')
-rw-r--r--mm/page_alloc.c16
1 files changed, 8 insertions, 8 deletions
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index fc151f6a7dbd..58f7a321598f 100644
--- a/mm/page_alloc.c
+++ b/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:
*
@@ -5349,14 +5357,6 @@ unsigned long get_zeroed_page(gfp_t gfp_mask)
}
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().