projects / mirror_spl.git / blame
| Commit | Line | Data |
|---|---|---|
| 4b393c50 | 1 | /* |
| 716154c5 BB |
2 | * Copyright (C) 2007-2010 Lawrence Livermore National Security, LLC. |
| 3 | * Copyright (C) 2007 The Regents of the University of California. | |
| 4 | * Produced at Lawrence Livermore National Laboratory (cf, DISCLAIMER). | |
| 5 | * Written by Brian Behlendorf <behlendorf1@llnl.gov>. | |
| 715f6251 | 6 | * UCRL-CODE-235197 |
| 7 | * | |
| 716154c5 | 8 | * This file is part of the SPL, Solaris Porting Layer. |
| 3d6af2dd | 9 | * For details, see <http://zfsonlinux.org/>. |
| 716154c5 BB |
10 | * |
| 11 | * The SPL is free software; you can redistribute it and/or modify it | |
| 12 | * under the terms of the GNU General Public License as published by the | |
| 13 | * Free Software Foundation; either version 2 of the License, or (at your | |
| 14 | * option) any later version. | |
| 715f6251 | 15 | * |
| 716154c5 | 16 | * The SPL is distributed in the hope that it will be useful, but WITHOUT |
| 715f6251 | 17 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 18 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 19 | * for more details. | |
| 20 | * | |
| 21 | * You should have received a copy of the GNU General Public License along | |
| 716154c5 | 22 | * with the SPL. If not, see <http://www.gnu.org/licenses/>. |
| 4b393c50 | 23 | */ |
| 715f6251 | 24 | |
| a713518f | 25 | #ifndef _SPL_VMSYSTM_H |
| 26 | #define _SPL_VMSYSTM_H | |
| 27 | ||
| 36b313da | 28 | #include <linux/mmzone.h> |
| a713518f | 29 | #include <linux/mm.h> |
| 6ab69573 | 30 | #include <linux/swap.h> |
| c5f70460 | 31 | #include <linux/highmem.h> |
| 2f117de8 | 32 | #include <linux/vmalloc.h> |
| af828292 | 33 | #include <sys/types.h> |
| 2bdb28fb | 34 | #include <asm/uaccess.h> |
| af828292 | 35 | |
| 8bbbe46f BB |
36 | #define membar_producer() smp_wmb() |
| 37 | #define physmem totalram_pages | |
| 851a5493 TC |
38 | #define freemem (nr_free_pages() + \ |
| 39 | global_page_state(NR_INACTIVE_FILE) + \ | |
| 40 | global_page_state(NR_INACTIVE_ANON) + \ | |
| 41 | global_page_state(NR_SLAB_RECLAIMABLE)) | |
| 36b313da | 42 | |
| 8bbbe46f BB |
43 | #define xcopyin(from, to, size) copy_from_user(to, from, size) |
| 44 | #define xcopyout(from, to, size) copy_to_user(to, from, size) | |
| 2bdb28fb | 45 | |
| 46 | static __inline__ int | |
| 47 | copyin(const void *from, void *to, size_t len) | |
| 48 | { | |
| 49 | /* On error copyin routine returns -1 */ | |
| 50 | if (xcopyin(from, to, len)) | |
| 51 | return -1; | |
| 52 | ||
| 53 | return 0; | |
| 54 | } | |
| 55 | ||
| 56 | static __inline__ int | |
| 57 | copyout(const void *from, void *to, size_t len) | |
| 58 | { | |
| 59 | /* On error copyout routine returns -1 */ | |
| 60 | if (xcopyout(from, to, len)) | |
| 61 | return -1; | |
| 62 | ||
| 63 | return 0; | |
| 64 | } | |
| 65 | ||
| 66 | static __inline__ int | |
| 67 | copyinstr(const void *from, void *to, size_t len, size_t *done) | |
| 68 | { | |
| 0998fdd6 | 69 | size_t rc; |
| 70 | ||
| 2bdb28fb | 71 | if (len == 0) |
| 72 | return -ENAMETOOLONG; | |
| 73 | ||
| 2bdb28fb | 74 | /* XXX: Should return ENAMETOOLONG if 'strlen(from) > len' */ |
| 75 | ||
| 76 | memset(to, 0, len); | |
| 0998fdd6 | 77 | rc = copyin(from, to, len - 1); |
| 78 | if (done != NULL) | |
| 79 | *done = rc; | |
| 2bdb28fb | 80 | |
| 81 | return 0; | |
| 82 | } | |
| 2f5d55aa | 83 | |
| a713518f | 84 | #endif /* SPL_VMSYSTM_H */ |