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[PATCH] GFP_ZONETYPES: add commentry on how to calculate
authorAndy Whitcroft <apw@shadowen.org>
Wed, 1 Feb 2006 11:05:26 +0000 (03:05 -0800)
committerLinus Torvalds <torvalds@g5.osdl.org>
Wed, 1 Feb 2006 16:53:14 +0000 (08:53 -0800)
commit79046ae07ae21245520ca0aab985ee6678a879f8
tree8a980747ab9eeaa3407e2aa2366a4c6e95dee9d0tree | snapshot (tar.gz zip)
parent42c722d4cb4022e56ff200f3f5a58c0dfd7edac6commit | diff
[PATCH] GFP_ZONETYPES: add commentry on how to calculate

GFP_ZONETYPES define using GFP_ZONEMASK and add commentry

Add commentry explaining the optimisation that we can apply to GFP_ZONETYPES
when the leftmost bit is a 'loaner', it can only be set in isolation.

Signed-off-by: Andy Whitcroft <apw@shadowen.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
include/linux/mmzone.h diff | blob | blame | history