Commit 09940a4f authored by Mel Gorman's avatar Mel Gorman Committed by Linus Torvalds

mm, page_alloc: simplify last cpupid reset

The current reset unnecessarily clears flags and makes pointless
calculations.
Signed-off-by: default avatarMel Gorman <mgorman@techsingularity.net>
Acked-by: default avatarVlastimil Babka <vbabka@suse.cz>
Cc: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 5bb1b169
...@@ -850,10 +850,7 @@ extern int page_cpupid_xchg_last(struct page *page, int cpupid); ...@@ -850,10 +850,7 @@ extern int page_cpupid_xchg_last(struct page *page, int cpupid);
static inline void page_cpupid_reset_last(struct page *page) static inline void page_cpupid_reset_last(struct page *page)
{ {
int cpupid = (1 << LAST_CPUPID_SHIFT) - 1; page->flags |= LAST_CPUPID_MASK << LAST_CPUPID_PGSHIFT;
page->flags &= ~(LAST_CPUPID_MASK << LAST_CPUPID_PGSHIFT);
page->flags |= (cpupid & LAST_CPUPID_MASK) << LAST_CPUPID_PGSHIFT;
} }
#endif /* LAST_CPUPID_NOT_IN_PAGE_FLAGS */ #endif /* LAST_CPUPID_NOT_IN_PAGE_FLAGS */
#else /* !CONFIG_NUMA_BALANCING */ #else /* !CONFIG_NUMA_BALANCING */
......
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