Eric Lee / smarc-ti-linux-kernel

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Commit f161eedc71da293a9bcfcf3d7f6c1da070a61ef0

Authored by Mel Gorman
Committed by Jiri Slaby
1 parent 3e7379c0f4
Exists in ti-linux-3.12.y and in 2 other branches newt-ti-linux-3.12.y, smarc-ti-linux-3.12.y

mm: page_alloc: lookup pageblock migratetype with IRQs enabled during free 

commit cfc47a2803db42140167b92d991ef04018e162c7 upstream.

get_pageblock_migratetype() is called during free with IRQs disabled.
This is unnecessary and disables IRQs for longer than necessary.

Signed-off-by: Mel Gorman <mgorman@suse.de>
Acked-by: Rik van Riel <riel@redhat.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Jan Kara <jack@suse.cz>
Cc: Michal Hocko <mhocko@suse.cz>
Cc: Hugh Dickins <hughd@google.com>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Theodore Ts'o <tytso@mit.edu>
Cc: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Mel Gorman <mgorman@suse.de>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>

Showing 1 changed file with 1 additions and 1 deletions Side-by-side Diff

... ... @@ -760,9 +760,9 @@
760 760 if (!free_pages_prepare(page, order))
761 761 return;
762 762  
  763 + migratetype = get_pfnblock_migratetype(page, pfn);
763 764 local_irq_save(flags);
764 765 __count_vm_events(PGFREE, 1 << order);
765   - migratetype = get_pfnblock_migratetype(page, pfn);
766 766 set_freepage_migratetype(page, migratetype);
767 767 free_one_page(page_zone(page), page, pfn, order, migratetype);
768 768 local_irq_restore(flags);