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| author | Matthew Wilcox <willy@infradead.org> | 2017-11-03 23:09:45 -0400 |
|---|---|---|
| committer | Matthew Wilcox <willy@infradead.org> | 2018-09-29 22:47:49 -0400 |
| commit | 02c02bf12c5d838603eed44195d3e91f094e2ab2 (patch) | |
| tree | cd7ab986f4b11b330f59d04f0bb9f618efb579fc /include/linux/radix-tree.h | |
| parent | 3159f943aafdbacb2f94c38fdaadabf2bbde2a14 (diff) | |
| download | linux-02c02bf12c5d838603eed44195d3e91f094e2ab2.tar.gz | |
xarray: Change definition of sibling entries
Instead of storing a pointer to the slot containing the canonical entry,
store the offset of the slot. Produces slightly more efficient code
(~300 bytes) and simplifies the implementation.
Signed-off-by: Matthew Wilcox <willy@infradead.org>
Reviewed-by: Josef Bacik <jbacik@fb.com>
Diffstat (limited to 'include/linux/radix-tree.h')
| -rw-r--r-- | include/linux/radix-tree.h | 5 |
1 files changed, 1 insertions, 4 deletions
diff --git a/include/linux/radix-tree.h b/include/linux/radix-tree.h index e9e76ab4fbbf9..60f3d8eb2cb78 100644 --- a/include/linux/radix-tree.h +++ b/include/linux/radix-tree.h @@ -59,10 +59,7 @@ static inline bool radix_tree_is_internal_node(void *ptr) #define RADIX_TREE_MAX_TAGS 3 -#ifndef RADIX_TREE_MAP_SHIFT -#define RADIX_TREE_MAP_SHIFT (CONFIG_BASE_SMALL ? 4 : 6) -#endif - +#define RADIX_TREE_MAP_SHIFT XA_CHUNK_SHIFT #define RADIX_TREE_MAP_SIZE (1UL << RADIX_TREE_MAP_SHIFT) #define RADIX_TREE_MAP_MASK (RADIX_TREE_MAP_SIZE-1) |