The patch titled Subject: mm, compaction: rename map_pages to split_map_pages has been added to the -mm tree. Its filename is mm-compaction-rename-map_pages-to-split_map_pages.patch This patch should soon appear at http://ozlabs.org/~akpm/mmots/broken-out/mm-compaction-rename-map_pages-to-split_map_pages.patch and later at http://ozlabs.org/~akpm/mmotm/broken-out/mm-compaction-rename-map_pages-to-split_map_pages.patch Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/process/submit-checklist.rst when testing your code *** The -mm tree is included into linux-next and is updated there every 3-4 working days ------------------------------------------------------ From: Mel Gorman <mgorman@xxxxxxxxxxxxxxxxxxx> Subject: mm, compaction: rename map_pages to split_map_pages It's non-obvious that high-order free pages are split into order-0 pages from the function name. Fix it. Link: http://lkml.kernel.org/r/20190104125011.16071-6-mgorman@xxxxxxxxxxxxxxxxxxx Signed-off-by: Mel Gorman <mgorman@xxxxxxxxxxxxxxxxxxx> Cc: Andrea Arcangeli <aarcange@xxxxxxxxxx> Cc: David Rientjes <rientjes@xxxxxxxxxx> Cc: Huang Ying <ying.huang@xxxxxxxxx> Cc: Kirill A. Shutemov <kirill@xxxxxxxxxxxxx> Cc: Vlastimil Babka <vbabka@xxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- --- a/mm/compaction.c~mm-compaction-rename-map_pages-to-split_map_pages +++ a/mm/compaction.c @@ -66,7 +66,7 @@ static unsigned long release_freepages(s return high_pfn; } -static void map_pages(struct list_head *list) +static void split_map_pages(struct list_head *list) { unsigned int i, order, nr_pages; struct page *page, *next; @@ -644,7 +644,7 @@ isolate_freepages_range(struct compact_c } /* __isolate_free_page() does not map the pages */ - map_pages(&freelist); + split_map_pages(&freelist); if (pfn < end_pfn) { /* Loop terminated early, cleanup. */ @@ -1141,7 +1141,7 @@ static void isolate_freepages(struct com } /* __isolate_free_page() does not map the pages */ - map_pages(freelist); + split_map_pages(freelist); /* * Record where the free scanner will restart next time. Either we _ Patches currently in -mm which might be from mgorman@xxxxxxxxxxxxxxxxxxx are mm-page_alloc-do-not-wake-kswapd-with-zone-lock-held.patch mm-compaction-shrink-compact_control.patch mm-compaction-rearrange-compact_control.patch mm-compaction-remove-last_migrated_pfn-from-compact_control.patch mm-compaction-remove-unnecessary-zone-parameter-in-some-instances.patch mm-compaction-rename-map_pages-to-split_map_pages.patch mm-compaction-skip-pageblocks-with-reserved-pages.patch mm-migrate-immediately-fail-migration-of-a-page-with-no-migration-handler.patch mm-compaction-always-finish-scanning-of-a-full-pageblock.patch mm-compaction-use-the-page-allocator-bulk-free-helper-for-lists-of-pages.patch mm-compaction-ignore-the-fragmentation-avoidance-boost-for-isolation-and-compaction.patch mm-compaction-use-free-lists-to-quickly-locate-a-migration-source.patch mm-compaction-keep-migration-source-private-to-a-single-compaction-instance.patch mm-compaction-use-free-lists-to-quickly-locate-a-migration-target.patch mm-compaction-avoid-rescanning-the-same-pageblock-multiple-times.patch mm-compaction-finish-pageblock-scanning-on-contention.patch mm-compaction-check-early-for-huge-pages-encountered-by-the-migration-scanner.patch mm-compaction-keep-cached-migration-pfns-synced-for-unusable-pageblocks.patch mm-compaction-rework-compact_should_abort-as-compact_check_resched.patch mm-compaction-do-not-consider-a-need-to-reschedule-as-contention.patch mm-compaction-reduce-unnecessary-skipping-of-migration-target-scanner.patch mm-compaction-round-robin-the-order-while-searching-the-free-lists-for-a-target.patch mm-compaction-sample-pageblocks-for-free-pages.patch mm-compaction-be-selective-about-what-pageblocks-to-clear-skip-hints.patch mm-compaction-capture-a-page-under-direct-compaction.patch mm-compaction-do-not-direct-compact-remote-memory.patch