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| author | Hans Reiser <reiser@namesys.com> | 2005-11-07 00:59:29 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2005-11-07 07:53:37 -0800 |
| commit | a43313668f62a06e14c915b8c8994fc8a1257394 (patch) | |
| tree | ae02e1ae145b3f277ead948c32b8b6d06a4e23d9 /include/linux/radix-tree.h | |
| parent | 7361f4d8ca65d23a18ba009b4484612183332c2f (diff) | |
| download | lwn-a43313668f62a06e14c915b8c8994fc8a1257394.tar.gz lwn-a43313668f62a06e14c915b8c8994fc8a1257394.zip | |
[PATCH] reiser4: add radix_tree_lookup_slot()
Reiser4 uses radix trees to solve a trouble reiser4_readdir has serving nfs
requests.
Unfortunately, radix tree api lacks an operation suitable for modifying
existing entry. This patch adds radix_tree_lookup_slot which returns pointer
to found item within the tree. That location can be then updated.
Both Nick and Christoph Lameter have patches which need this as well.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include/linux/radix-tree.h')
| -rw-r--r-- | include/linux/radix-tree.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/radix-tree.h b/include/linux/radix-tree.h index 9f0f9281f42a..36e5d269612f 100644 --- a/include/linux/radix-tree.h +++ b/include/linux/radix-tree.h @@ -46,6 +46,7 @@ do { \ int radix_tree_insert(struct radix_tree_root *, unsigned long, void *); void *radix_tree_lookup(struct radix_tree_root *, unsigned long); +void **radix_tree_lookup_slot(struct radix_tree_root *, unsigned long); void *radix_tree_delete(struct radix_tree_root *, unsigned long); unsigned int radix_tree_gang_lookup(struct radix_tree_root *root, void **results, |