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authorMatthew Wilcox <willy@linux.intel.com>2016-05-21 03:03:10 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2016-05-21 03:58:30 +0300
commitc12e51b07b3ac4c188fd91a82f96840fdb9cca6f (patch)
tree13f432c3419297b6994905f9bb2eb9b934bc614d /include/linux/radix-tree.h
parent0c7fa0a8418cbe0e8963fe36db9575d03b8589f7 (diff)
downloadlinux-c12e51b07b3ac4c188fd91a82f96840fdb9cca6f.tar.xz
radix-tree: replace node->height with node->shift
node->shift represents the shift necessary for looking in the slots array at this level. It is equal to the old (node->height - 1) * RADIX_TREE_MAP_SHIFT. Signed-off-by: Matthew Wilcox <willy@linux.intel.com> Reviewed-by: Ross Zwisler <ross.zwisler@linux.intel.com> Cc: Konstantin Khlebnikov <koct9i@gmail.com> Cc: Kirill Shutemov <kirill.shutemov@linux.intel.com> Cc: Jan Kara <jack@suse.com> Cc: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux/radix-tree.h')
-rw-r--r--include/linux/radix-tree.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/include/linux/radix-tree.h b/include/linux/radix-tree.h
index 2d2ad9d685a3..037458257e12 100644
--- a/include/linux/radix-tree.h
+++ b/include/linux/radix-tree.h
@@ -89,7 +89,7 @@ static inline int radix_tree_is_indirect_ptr(void *ptr)
#define RADIX_TREE_COUNT_MASK ((1UL << RADIX_TREE_COUNT_SHIFT) - 1)
struct radix_tree_node {
- unsigned char height; /* From the bottom */
+ unsigned char shift; /* Bits remaining in each slot */
unsigned char offset; /* Slot offset in parent */
unsigned int count;
union {