diff options
| author | Mel Gorman <mgorman@techsingularity.net> | 2021-06-29 05:42:36 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2021-06-29 20:53:55 +0300 |
| commit | 21d02f8f8464e27434f477c73431075197a9f72f (patch) | |
| tree | dc80b23d4f32d1b993fce097068dbfad5e18ccfd | |
| parent | f7ec104458e00d27a190348ac3a513f3df3699a4 (diff) | |
| download | linux-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>
| -rw-r--r-- | mm/page_alloc.c | 16 |
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(). |