Switch 9p error table to use the new hashtable implementation. This reduces the amount of generic unrelated code in 9p. Signed-off-by: Sasha Levin <levinsasha928@xxxxxxxxx> --- net/9p/error.c | 21 ++++++++++----------- 1 files changed, 10 insertions(+), 11 deletions(-) diff --git a/net/9p/error.c b/net/9p/error.c index 2ab2de7..a5cc7dd 100644 --- a/net/9p/error.c +++ b/net/9p/error.c @@ -34,7 +34,7 @@ #include <linux/jhash.h> #include <linux/errno.h> #include <net/9p/9p.h> - +#include <linux/hashtable.h> /** * struct errormap - map string errors from Plan 9 to Linux numeric ids * @name: string sent over 9P @@ -50,8 +50,8 @@ struct errormap { struct hlist_node list; }; -#define ERRHASHSZ 32 -static struct hlist_head hash_errmap[ERRHASHSZ]; +#define ERR_HASH_BITS 5 +static DEFINE_HASHTABLE(hash_errmap, ERR_HASH_BITS); /* FixMe - reduce to a reasonable size */ static struct errormap errmap[] = { @@ -193,18 +193,17 @@ static struct errormap errmap[] = { int p9_error_init(void) { struct errormap *c; - int bucket; + u32 hash; /* initialize hash table */ - for (bucket = 0; bucket < ERRHASHSZ; bucket++) - INIT_HLIST_HEAD(&hash_errmap[bucket]); + hash_init(hash_errmap); /* load initial error map into hash table */ for (c = errmap; c->name != NULL; c++) { c->namelen = strlen(c->name); - bucket = jhash(c->name, c->namelen, 0) % ERRHASHSZ; + hash = jhash(c->name, c->namelen, 0); INIT_HLIST_NODE(&c->list); - hlist_add_head(&c->list, &hash_errmap[bucket]); + hash_add(hash_errmap, &c->list, hash); } return 1; @@ -223,13 +222,13 @@ int p9_errstr2errno(char *errstr, int len) int errno; struct hlist_node *p; struct errormap *c; - int bucket; + u32 hash; errno = 0; p = NULL; c = NULL; - bucket = jhash(errstr, len, 0) % ERRHASHSZ; - hlist_for_each_entry(c, p, &hash_errmap[bucket], list) { + hash = jhash(errstr, len, 0); + hash_for_each_possible(hash_errmap, c, p, list, hash) { if (c->namelen == len && !memcmp(c->name, errstr, len)) { errno = c->val; break; -- 1.7.8.6 -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel