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| author | Matthew Wilcox <willy@linux.intel.com> | 2016-05-20 17:02:02 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-05-20 17:58:30 -0700 |
| commit | 29e0967c2f66771f654cef7168c90a53737abcdf (patch) | |
| tree | 95e021c42ea084842b033b590d9843fb08efb4eb | |
| parent | 3b8c00f68405e9c037a6d8ae0d5d9da7f8a34e6a (diff) | |
| download | linux-29e0967c2f66771f654cef7168c90a53737abcdf.tar.gz linux-29e0967c2f66771f654cef7168c90a53737abcdf.tar.bz2 linux-29e0967c2f66771f654cef7168c90a53737abcdf.zip | |
radix-tree: fix deleting a multi-order entry through an alias
If we deleted an entry through an index which looked up a sibling
pointer, we'd end up zeroing out the wrong slots in the node. Use
get_slot_offset() to find the right slot.
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>
| -rw-r--r-- | lib/radix-tree.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/radix-tree.c b/lib/radix-tree.c index c0366d1d2613..b3364b9ecc83 100644 --- a/lib/radix-tree.c +++ b/lib/radix-tree.c @@ -1558,7 +1558,7 @@ void *radix_tree_delete_item(struct radix_tree_root *root, return entry; } - offset = index & RADIX_TREE_MAP_MASK; + offset = get_slot_offset(node, slot); /* * Clear all tags associated with the item to be deleted. |