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Commit cfd9b7df authored by Nick Piggin's avatar Nick Piggin Committed by Linus Torvalds
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[PATCH] radix-tree: small



Reduce radix tree node memory usage by about a factor of 4 for small files
(< 64K).  There are pointer traversal and memory usage costs for large
files with dense pagecache.

Signed-off-by: default avatarNick Piggin <npiggin@suse.de>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent 612d6c19
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+1 −1
Original line number Diff line number Diff line
@@ -33,7 +33,7 @@


#ifdef __KERNEL__
#define RADIX_TREE_MAP_SHIFT	6
#define RADIX_TREE_MAP_SHIFT	(CONFIG_BASE_SMALL ? 4 : 6)
#else
#define RADIX_TREE_MAP_SHIFT	3	/* For more stressful testing */
#endif