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| author | Matthew Wilcox <willy@linux.intel.com> | 2016-05-21 02:02:46 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-05-21 02:58:30 +0200 |
| commit | 0a2efc6c809b01872321d9c7e7d82d59ac6fde10 (patch) | |
| tree | 18b67497a5df2dfe015ed03fe665fae59f0311ca /tools/testing | |
| parent | radix-tree: fix radix_tree_create for sibling entries (diff) | |
| download | linux-0a2efc6c809b01872321d9c7e7d82d59ac6fde10.tar.xz linux-0a2efc6c809b01872321d9c7e7d82d59ac6fde10.zip | |
radix-tree: rewrite radix_tree_locate_item
Use the new multi-order support functions to rewrite
radix_tree_locate_item(). Modify the locate tests to test multiorder
entries too.
[hughd@google.com: radix_tree_locate_item() is often returning the wrong index]
Link: http://lkml.kernel.org/r/alpine.LSU.2.11.1605012108490.1166@eggly.anvils
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 'tools/testing')
| -rw-r--r-- | tools/testing/radix-tree/main.c | 30 |
1 files changed, 18 insertions, 12 deletions
diff --git a/tools/testing/radix-tree/main.c b/tools/testing/radix-tree/main.c index b6a700b00cce..65231e9ba3e8 100644 --- a/tools/testing/radix-tree/main.c +++ b/tools/testing/radix-tree/main.c @@ -232,17 +232,18 @@ void copy_tag_check(void) item_kill_tree(&tree); } -void __locate_check(struct radix_tree_root *tree, unsigned long index) +void __locate_check(struct radix_tree_root *tree, unsigned long index, + unsigned order) { struct item *item; unsigned long index2; - item_insert(tree, index); + item_insert_order(tree, index, order); item = item_lookup(tree, index); index2 = radix_tree_locate_item(tree, item); if (index != index2) { - printf("index %ld inserted; found %ld\n", - index, index2); + printf("index %ld order %d inserted; found %ld\n", + index, order, index2); abort(); } } @@ -250,21 +251,26 @@ void __locate_check(struct radix_tree_root *tree, unsigned long index) static void locate_check(void) { RADIX_TREE(tree, GFP_KERNEL); + unsigned order; unsigned long offset, index; - for (offset = 0; offset < (1 << 3); offset++) { - for (index = 0; index < (1UL << 5); index++) { - __locate_check(&tree, index + offset); - } - if (radix_tree_locate_item(&tree, &tree) != -1) - abort(); + for (order = 0; order < 20; order++) { + for (offset = 0; offset < (1 << (order + 3)); + offset += (1UL << order)) { + for (index = 0; index < (1UL << (order + 5)); + index += (1UL << order)) { + __locate_check(&tree, index + offset, order); + } + if (radix_tree_locate_item(&tree, &tree) != -1) + abort(); - item_kill_tree(&tree); + item_kill_tree(&tree); + } } if (radix_tree_locate_item(&tree, &tree) != -1) abort(); - __locate_check(&tree, -1); + __locate_check(&tree, -1, 0); if (radix_tree_locate_item(&tree, &tree) != -1) abort(); item_kill_tree(&tree); |