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| author | Oscar Salvador <osalvador@techadventures.net> | 2018-01-31 16:20:11 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2018-01-31 17:18:39 -0800 |
| commit | 6787c1dab1724ca0d92110d83485c8c72dbf83f4 (patch) | |
| tree | 1c4fa2b4a0584654c070634cabf80c7b15a1ced0 /mm/page_owner.c | |
| parent | 3c2c648842843326f8c6ace425810eb47864c6b4 (diff) | |
| download | lwn-6787c1dab1724ca0d92110d83485c8c72dbf83f4.tar.gz lwn-6787c1dab1724ca0d92110d83485c8c72dbf83f4.zip | |
mm/page_owner.c: clean up init_pages_in_zone()
Remove two redundant assignments in init_pages_in_zone().
[osalvador@techadventures.net: v3]
Link: http://lkml.kernel.org/r/20180117124513.GA876@techadventures.net
[akpm@linux-foundation.org: coding style tweaks]
Link: http://lkml.kernel.org/r/20180110084355.GA22822@techadventures.net
Signed-off-by: Oscar Salvador <osalvador@techadventures.net>
Acked-by: Michal Hocko <mhocko@suse.com>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/page_owner.c')
| -rw-r--r-- | mm/page_owner.c | 16 |
1 files changed, 7 insertions, 9 deletions
diff --git a/mm/page_owner.c b/mm/page_owner.c index 06a0055f45a6..9886c6073828 100644 --- a/mm/page_owner.c +++ b/mm/page_owner.c @@ -528,21 +528,18 @@ read_page_owner(struct file *file, char __user *buf, size_t count, loff_t *ppos) static void init_pages_in_zone(pg_data_t *pgdat, struct zone *zone) { - struct page *page; - struct page_ext *page_ext; - unsigned long pfn = zone->zone_start_pfn, block_end_pfn; - unsigned long end_pfn = pfn + zone->spanned_pages; + unsigned long pfn = zone->zone_start_pfn; + unsigned long end_pfn = zone_end_pfn(zone); unsigned long count = 0; - /* Scan block by block. First and last block may be incomplete */ - pfn = zone->zone_start_pfn; - /* * Walk the zone in pageblock_nr_pages steps. If a page block spans * a zone boundary, it will be double counted between zones. This does * not matter as the mixed block count will still be correct */ for (; pfn < end_pfn; ) { + unsigned long block_end_pfn; + if (!pfn_valid(pfn)) { pfn = ALIGN(pfn + 1, MAX_ORDER_NR_PAGES); continue; @@ -551,9 +548,10 @@ static void init_pages_in_zone(pg_data_t *pgdat, struct zone *zone) block_end_pfn = ALIGN(pfn + 1, pageblock_nr_pages); block_end_pfn = min(block_end_pfn, end_pfn); - page = pfn_to_page(pfn); - for (; pfn < block_end_pfn; pfn++) { + struct page *page; + struct page_ext *page_ext; + if (!pfn_valid_within(pfn)) continue; |