| /* |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License version 2 only, |
| * 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 version 2 for more details (a copy is included |
| * in the LICENSE file that accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License |
| * version 2 along with this program; If not, see |
| * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf |
| * |
| */ |
| /* |
| * This file creates a memory allocation primitive for Lustre, that |
| * allows to fallback to vmalloc allocations should regular kernel allocations |
| * fail due to size or system memory fragmentation. |
| * |
| * Author: Oleg Drokin <green@linuxhacker.ru> |
| * |
| */ |
| /* |
| * This file is part of Lustre, http://www.lustre.org/ |
| * Lustre is a trademark of Seagate Technology. |
| */ |
| #include <linux/slab.h> |
| #include <linux/vmalloc.h> |
| |
| #include "../../../include/linux/libcfs/libcfs.h" |
| |
| void *libcfs_kvzalloc(size_t size, gfp_t flags) |
| { |
| void *ret; |
| |
| ret = kzalloc(size, flags | __GFP_NOWARN); |
| if (!ret) |
| ret = __vmalloc(size, flags | __GFP_ZERO, PAGE_KERNEL); |
| return ret; |
| } |
| EXPORT_SYMBOL(libcfs_kvzalloc); |
| |
| void *libcfs_kvzalloc_cpt(struct cfs_cpt_table *cptab, int cpt, size_t size, |
| gfp_t flags) |
| { |
| void *ret; |
| |
| ret = kzalloc_node(size, flags | __GFP_NOWARN, |
| cfs_cpt_spread_node(cptab, cpt)); |
| if (!ret) { |
| WARN_ON(!(flags & (__GFP_FS | __GFP_HIGH))); |
| ret = vmalloc_node(size, cfs_cpt_spread_node(cptab, cpt)); |
| } |
| |
| return ret; |
| } |
| EXPORT_SYMBOL(libcfs_kvzalloc_cpt); |