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authorPeter Zijlstra <a.p.zijlstra@chello.nl>2011-05-24 17:12:10 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2011-05-25 08:39:19 -0700
commit746b18d421da7f27e948e8af1ad82b6d0309324d (patch)
treed4e756977673b7b8166c00e34a21d85c5e26ea6e /include/linux/huge_mm.h
parent6111e4ca6829a0e8b092b8e5eeb6b5366091f29c (diff)
mm: use refcounts for page_lock_anon_vma()
Convert page_lock_anon_vma() over to use refcounts. This is done to prepare for the conversion of anon_vma from spinlock to mutex. Sadly this inceases the cost of page_lock_anon_vma() from one to two atomics, a follow up patch addresses this, lets keep that simple for now. Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Reviewed-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Reviewed-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Acked-by: Hugh Dickins <hughd@google.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: David Miller <davem@davemloft.net> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Russell King <rmk@arm.linux.org.uk> Cc: Paul Mundt <lethal@linux-sh.org> Cc: Jeff Dike <jdike@addtoit.com> Cc: Richard Weinberger <richard@nod.at> Cc: Tony Luck <tony.luck@intel.com> Cc: Mel Gorman <mel@csn.ul.ie> Cc: Nick Piggin <npiggin@kernel.dk> Cc: Namhyung Kim <namhyung@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux/huge_mm.h')
0 files changed, 0 insertions, 0 deletions