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authorJan Beulich <JBeulich@novell.com>2009-09-21 17:03:05 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2009-09-22 07:17:38 -0700
commit4481374ce88ba8f460c8b89f2572027bd27057d0 (patch)
tree6896601b6a1da0e3e932ffa75fcff966c834c02c /include
parent4738e1b9cf8f9e28d7de080a5e6ce5d0095ea18f (diff)
mm: replace various uses of num_physpages by totalram_pages
Sizing of memory allocations shouldn't depend on the number of physical pages found in a system, as that generally includes (perhaps a huge amount of) non-RAM pages. The amount of what actually is usable as storage should instead be used as a basis here. Some of the calculations (i.e. those not intending to use high memory) should likely even use (totalram_pages - totalhigh_pages). Signed-off-by: Jan Beulich <jbeulich@novell.com> Acked-by: Rusty Russell <rusty@rustcorp.com.au> Acked-by: Ingo Molnar <mingo@elte.hu> Cc: Dave Airlie <airlied@linux.ie> Cc: Kyle McMartin <kyle@mcmartin.ca> Cc: Jeremy Fitzhardinge <jeremy@goop.org> Cc: Pekka Enberg <penberg@cs.helsinki.fi> Cc: Hugh Dickins <hugh.dickins@tiscali.co.uk> Cc: "David S. Miller" <davem@davemloft.net> Cc: Patrick McHardy <kaber@trash.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include')
-rw-r--r--include/linux/mm.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/mm.h b/include/linux/mm.h
index d808cf832c4d..19ff81c49ba6 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -25,6 +25,7 @@ extern unsigned long max_mapnr;
#endif
extern unsigned long num_physpages;
+extern unsigned long totalram_pages;
extern void * high_memory;
extern int page_cluster;