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[PATCH] mm: micro optimise zone_watermark_ok
authorNick Piggin <nickpiggin@yahoo.com.au>
Wed, 4 Oct 2006 09:15:23 +0000 (02:15 -0700)
committerLinus Torvalds <torvalds@g5.osdl.org>
Wed, 4 Oct 2006 14:55:12 +0000 (07:55 -0700)
commite80ee884ae0e3794ef2b65a18a767d502ad712ee
tree6e5704f603d1596df930bc22f5e926cc50550102tree | snapshot
parentb2abacf3a2699a8020829c85c16f358ba85cecafcommit | diff
[PATCH] mm: micro optimise zone_watermark_ok

Having min be a signed quantity means gcc can't turn high latency divides
into shifts.  There happen to be two such divides for GFP_ATOMIC (ie.
networking, ie.  important) allocations, one of which depends on the other.
 Fixing this makes code smaller as a bonus.

Shame on somebody (probably me).

Signed-off-by: Nick Piggin <npiggin@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
mm/page_alloc.c diff | blob | history
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