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| author | Miaohe Lin <linmiaohe@huawei.com> | 2021-11-05 13:40:08 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2021-11-06 13:30:37 -0700 |
| commit | 7cba630bd830472f88ada5fdd34bbfd5825d9217 (patch) | |
| tree | 6ebaf69e647b2efa85e022b2fc4e9ece3eefa4dd /mm/page_alloc.c | |
| parent | ff7ed9e4532d14e0478d192548e77d78d72387e9 (diff) | |
| download | linux-7cba630bd830472f88ada5fdd34bbfd5825d9217.tar.gz | |
mm/page_alloc.c: fix obsolete comment in free_pcppages_bulk()
The second two paragraphs about "all pages pinned" and pages_scanned is
obsolete. And There are PAGE_ALLOC_COSTLY_ORDER + 1 + NR_PCP_THP orders
in pcp. So the same order assumption is not held now.
Link: https://lkml.kernel.org/r/20210902121242.41607-4-linmiaohe@huawei.com
Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
Acked-by: Mel Gorman <mgorman@techsingularity.net>
Cc: David Hildenbrand <david@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Vlastimil Babka <vbabka@suse.cz>
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.c | 8 |
1 files changed, 1 insertions, 7 deletions
diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 8224c6c302dd..c494c9c66f4f 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -1428,14 +1428,8 @@ static inline void prefetch_buddy(struct page *page) /* * Frees a number of pages from the PCP lists - * Assumes all pages on list are in same zone, and of same order. + * Assumes all pages on list are in same zone. * count is the number of pages to free. - * - * If the zone was previously in an "all pages pinned" state then look to - * see if this freeing clears that state. - * - * And clear the zone's pages_scanned counter, to hold off the "all pages are - * pinned" detection logic. */ static void free_pcppages_bulk(struct zone *zone, int count, struct per_cpu_pages *pcp) |