diff options
Diffstat (limited to 'fs/btrfs/rcu-string.h')
| -rw-r--r-- | fs/btrfs/rcu-string.h | 56 |
1 files changed, 0 insertions, 56 deletions
diff --git a/fs/btrfs/rcu-string.h b/fs/btrfs/rcu-string.h deleted file mode 100644 index 9e111e4576d4..000000000000 --- a/fs/btrfs/rcu-string.h +++ /dev/null @@ -1,56 +0,0 @@ -/* - * Copyright (C) 2012 Red Hat. All rights reserved. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public - * License v2 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 the - * Free Software Foundation, Inc., 59 Temple Place - Suite 330, - * Boston, MA 021110-1307, USA. - */ - -struct rcu_string { - struct rcu_head rcu; - char str[0]; -}; - -static inline struct rcu_string *rcu_string_strdup(const char *src, gfp_t mask) -{ - size_t len = strlen(src) + 1; - struct rcu_string *ret = kzalloc(sizeof(struct rcu_string) + - (len * sizeof(char)), mask); - if (!ret) - return ret; - strncpy(ret->str, src, len); - return ret; -} - -static inline void rcu_string_free(struct rcu_string *str) -{ - if (str) - kfree_rcu(str, rcu); -} - -#define printk_in_rcu(fmt, ...) do { \ - rcu_read_lock(); \ - printk(fmt, __VA_ARGS__); \ - rcu_read_unlock(); \ -} while (0) - -#define printk_ratelimited_in_rcu(fmt, ...) do { \ - rcu_read_lock(); \ - printk_ratelimited(fmt, __VA_ARGS__); \ - rcu_read_unlock(); \ -} while (0) - -#define rcu_str_deref(rcu_str) ({ \ - struct rcu_string *__str = rcu_dereference(rcu_str); \ - __str->str; \ -}) |