diff options
Diffstat (limited to 'net/9p/error.c')
| -rw-r--r-- | net/9p/error.c | 44 |
1 files changed, 12 insertions, 32 deletions
diff --git a/net/9p/error.c b/net/9p/error.c index 126fd0dceea2..8ba8afc91482 100644 --- a/net/9p/error.c +++ b/net/9p/error.c @@ -1,6 +1,5 @@ +// SPDX-License-Identifier: GPL-2.0-only /* - * linux/fs/9p/error.c - * * Error string handling * * Plan 9 uses error strings, Unix uses error numbers. These functions @@ -9,22 +8,6 @@ * * Copyright (C) 2004 by Eric Van Hensbergen <ericvh@gmail.com> * Copyright (C) 2002 by Ron Minnich <rminnich@lanl.gov> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 - * as published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to: - * Free Software Foundation - * 51 Franklin Street, Fifth Floor - * Boston, MA 02111-1301 USA - * */ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt @@ -33,6 +16,7 @@ #include <linux/list.h> #include <linux/jhash.h> #include <linux/errno.h> +#include <linux/hashtable.h> #include <net/9p/9p.h> /** @@ -50,8 +34,8 @@ struct errormap { struct hlist_node list; }; -#define ERRHASHSZ 32 -static struct hlist_head hash_errmap[ERRHASHSZ]; +#define ERRHASH_BITS 5 +static DEFINE_HASHTABLE(hash_errmap, ERRHASH_BITS); /* FixMe - reduce to a reasonable size */ static struct errormap errmap[] = { @@ -193,18 +177,14 @@ static struct errormap errmap[] = { int p9_error_init(void) { struct errormap *c; - int bucket; - - /* initialize hash table */ - for (bucket = 0; bucket < ERRHASHSZ; bucket++) - INIT_HLIST_HEAD(&hash_errmap[bucket]); + u32 hash; /* load initial error map into hash table */ - for (c = errmap; c->name != NULL; c++) { + for (c = errmap; c->name; 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; @@ -212,7 +192,7 @@ int p9_error_init(void) EXPORT_SYMBOL(p9_error_init); /** - * errstr2errno - convert error string to error number + * p9_errstr2errno - convert error string to error number * @errstr: error string * @len: length of error string * @@ -222,12 +202,12 @@ int p9_errstr2errno(char *errstr, int len) { int errno; struct errormap *c; - int bucket; + u32 hash; errno = 0; c = NULL; - bucket = jhash(errstr, len, 0) % ERRHASHSZ; - hlist_for_each_entry(c, &hash_errmap[bucket], list) { + hash = jhash(errstr, len, 0); + hash_for_each_possible(hash_errmap, c, list, hash) { if (c->namelen == len && !memcmp(c->name, errstr, len)) { errno = c->val; break; |