Messages in this thread Patch in this message |  | | Date | Wed, 11 Sep 2002 14:02:32 -0400 | From | Bart Trojanowski <> | Subject | [PATCH] 2.4.19 fix for fuzzy hash <linux/ghash.h> |
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The DEF_HASH_FUZZY macro allows the user to template their hash; it takes on a paramter for the hashing-function, namely HASHFN. When used with a hashing-function named anything other than 'hashfn()', a module using the kernel's fuzzy hash implementation will not compile.
None of the in-kernel 2.4.x drivers use this primitive (yet) so it's no wonder no one has spotted it. The patch is very trivial and makes me think that I am the very first user of the include/linux/ghash.h hash-table primitive. ;)
Bart.
diff -ruN linux-2.4.19/include/linux/ghash.h linux-2.4.19+ghash-fix/include/linux/ghash.h --- linux-2.4.19/include/linux/ghash.h Wed Sep 11 10:09:57 2002 +++ linux-2.4.19+ghash-fix/include/linux/ghash.h Wed Sep 11 10:12:52 2002 @@ -106,7 +106,7 @@ \ LINKAGE TYPE * find_##NAME##_hash(struct NAME##_table * tbl, KEYTYPE pos)\ {\ - int ix = hashfn(pos);\ + int ix = HASHFN(pos);\ TYPE * ptr = tbl->hashtable[ix];\ while(ptr && KEYCMP(ptr->KEY, pos))\ ptr = ptr->PTRS.next_hash;\ @@ -206,7 +206,7 @@ \ LINKAGE TYPE * find_##NAME##_hash(struct NAME##_table * tbl, KEYTYPE pos)\ {\ - int ix = hashfn(pos);\ + int ix = HASHFN(pos);\ TYPE * ptr = tbl->hashtable[ix];\ while(ptr && KEYCMP(ptr->KEY, pos))\ ptr = ptr->PTRS.next_hash;\ diff -ruN linux-2.4.19/include/linux/ghash.h~ linux-2.4.19+ghash-fix/include/linux/ghash.h~ --- linux-2.4.19/include/linux/ghash.h~ Wed Sep 11 10:09:49 2002 +++ linux-2.4.19+ghash-fix/include/linux/ghash.h~ Wed Sep 11 10:10:57 2002 @@ -1,4 +1,3 @@ - /* * include/linux/ghash.h -- generic hashing with fuzzy retrieval *[unhandled content-type:application/pgp-signature] |  |