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[PATCH] page flags: add commentry regarding field reservation
authorAndy Whitcroft <apw@shadowen.org>
Tue, 11 Apr 2006 05:53:01 +0000 (22:53 -0700)
committerLinus Torvalds <torvalds@g5.osdl.org>
Tue, 11 Apr 2006 13:18:32 +0000 (06:18 -0700)
commit91fc8ab3c6312931d64c72845ee2f93a0f87f1a5
tree63cbc8d224a27f7d62bd1651afa5cd3b659c7587tree | snapshot
parentd5ddc79bcaab6975e7671805c3578407dc33b764commit | diff
[PATCH] page flags: add commentry regarding field reservation

Add some documentation regarding the utilisation of the flags field in
struct page.  This field is overloaded for per page bits and to hold node,
zone and SPARSEMEM information.  Make it clear which areas are used for
what and how many bits are in each area.

Signed-off-by: Andy Whitcroft <apw@shadowen.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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