diff options
| author | Zi Yan | 2022-05-12 20:22:58 -0700 |
|---|---|---|
| committer | Andrew Morton | 2022-05-13 07:20:13 -0700 |
| commit | b2c9e2fbba32539626522b6aed30d1dde7b7e971 (patch) | |
| tree | bcfc416b5ef0adf5f41d4d09175a736a1bd3b98a /include | |
| parent | 844fbae63e468e32e3a3970868602a4bb658aff9 (diff) | |
mm: make alloc_contig_range work at pageblock granularity
alloc_contig_range() worked at MAX_ORDER_NR_PAGES granularity to avoid
merging pageblocks with different migratetypes. It might unnecessarily
convert extra pageblocks at the beginning and at the end of the range.
Change alloc_contig_range() to work at pageblock granularity.
Special handling is needed for free pages and in-use pages across the
boundaries of the range specified by alloc_contig_range(). Because these=
Partially isolated pages causes free page accounting issues. The free
pages will be split and freed into separate migratetype lists; the in-use=
Pages will be migrated then the freed pages will be handled in the
aforementioned way.
[ziy@nvidia.com: fix deadlock/crash]
Link: https://lkml.kernel.org/r/23A7297E-6C84-4138-A9FE-3598234004E6@nvidia.com
Link: https://lkml.kernel.org/r/20220425143118.2850746-4-zi.yan@sent.com
Signed-off-by: Zi Yan <ziy@nvidia.com>
Reported-by: kernel test robot <lkp@intel.com>
Cc: Christophe Leroy <christophe.leroy@csgroup.eu>
Cc: David Hildenbrand <david@redhat.com>
Cc: Eric Ren <renzhengeek@gmail.com>
Cc: Mel Gorman <mgorman@techsingularity.net>
Cc: Mike Rapoport <rppt@linux.ibm.com>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Oscar Salvador <osalvador@suse.de>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/page-isolation.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/include/linux/page-isolation.h b/include/linux/page-isolation.h index e14eddf6741a..5456b7be38ae 100644 --- a/include/linux/page-isolation.h +++ b/include/linux/page-isolation.h @@ -42,7 +42,7 @@ int move_freepages_block(struct zone *zone, struct page *page, */ int start_isolate_page_range(unsigned long start_pfn, unsigned long end_pfn, - unsigned migratetype, int flags); + int migratetype, int flags, gfp_t gfp_flags); /* * Changes MIGRATE_ISOLATE to MIGRATE_MOVABLE. @@ -50,7 +50,7 @@ start_isolate_page_range(unsigned long start_pfn, unsigned long end_pfn, */ void undo_isolate_page_range(unsigned long start_pfn, unsigned long end_pfn, - unsigned migratetype); + int migratetype); /* * Test all pages in [start_pfn, end_pfn) are isolated or not. |