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| author | Matthew Wilcox <[email protected]> | 2017-11-03 17:30:42 +0000 |
|---|---|---|
| committer | Matthew Wilcox <[email protected]> | 2018-09-30 02:47:49 +0000 |
| commit | 3159f943aafdbacb2f94c38fdaadabf2bbde2a14 (patch) | |
| tree | 7e06823a1ab7e90774535d17a217a939bdddda3b /tools/testing/radix-tree/xarray.c | |
| parent | idr: Permit any valid kernel pointer to be stored (diff) | |
| download | kernel-3159f943aafdbacb2f94c38fdaadabf2bbde2a14.tar.gz kernel-3159f943aafdbacb2f94c38fdaadabf2bbde2a14.zip | |
xarray: Replace exceptional entries
Introduce xarray value entries and tagged pointers to replace radix
tree exceptional entries. This is a slight change in encoding to allow
the use of an extra bit (we can now store BITS_PER_LONG - 1 bits in a
value entry). It is also a change in emphasis; exceptional entries are
intimidating and different. As the comment explains, you can choose
to store values or pointers in the xarray and they are both first-class
citizens.
Signed-off-by: Matthew Wilcox <[email protected]>
Reviewed-by: Josef Bacik <[email protected]>
Diffstat (limited to 'tools/testing/radix-tree/xarray.c')
0 files changed, 0 insertions, 0 deletions