Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
Nathan Scott | 7b71876 | 2005-11-02 14:58:39 +1100 | [diff] [blame] | 2 | * Copyright (c) 2000-2003,2005 Silicon Graphics, Inc. |
| 3 | * All Rights Reserved. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4 | * |
Nathan Scott | 7b71876 | 2005-11-02 14:58:39 +1100 | [diff] [blame] | 5 | * This program is free software; you can redistribute it and/or |
| 6 | * modify it under the terms of the GNU General Public License as |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 7 | * published by the Free Software Foundation. |
| 8 | * |
Nathan Scott | 7b71876 | 2005-11-02 14:58:39 +1100 | [diff] [blame] | 9 | * This program is distributed in the hope that it would be useful, |
| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 12 | * GNU General Public License for more details. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 13 | * |
Nathan Scott | 7b71876 | 2005-11-02 14:58:39 +1100 | [diff] [blame] | 14 | * You should have received a copy of the GNU General Public License |
| 15 | * along with this program; if not, write the Free Software Foundation, |
| 16 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 17 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 18 | #include "xfs.h" |
Christoph Hellwig | 739bfb2 | 2007-08-29 10:58:01 +1000 | [diff] [blame] | 19 | #include "xfs_vnodeops.h" |
| 20 | #include "xfs_bmap_btree.h" |
| 21 | #include "xfs_inode.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 22 | |
Christoph Hellwig | b677c21 | 2007-08-29 11:46:28 +1000 | [diff] [blame] | 23 | /* |
| 24 | * And this gunk is needed for xfs_mount.h" |
| 25 | */ |
| 26 | #include "xfs_log.h" |
| 27 | #include "xfs_trans.h" |
| 28 | #include "xfs_sb.h" |
| 29 | #include "xfs_dmapi.h" |
| 30 | #include "xfs_inum.h" |
| 31 | #include "xfs_ag.h" |
| 32 | #include "xfs_mount.h" |
| 33 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 34 | |
| 35 | /* |
David Chinner | 12017fa | 2008-08-13 16:34:31 +1000 | [diff] [blame] | 36 | * Dedicated vnode inactive/reclaim sync wait queues. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 37 | * Prime number of hash buckets since address is used as the key. |
| 38 | */ |
| 39 | #define NVSYNC 37 |
| 40 | #define vptosync(v) (&vsync[((unsigned long)v) % NVSYNC]) |
David Chinner | 7989cb8 | 2007-02-10 18:34:56 +1100 | [diff] [blame] | 41 | static wait_queue_head_t vsync[NVSYNC]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 42 | |
Lachlan McIlroy | de2eeea | 2008-02-06 13:37:56 +1100 | [diff] [blame] | 43 | void __init |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 44 | vn_init(void) |
| 45 | { |
Christoph Hellwig | 51c91ed | 2005-09-02 16:58:38 +1000 | [diff] [blame] | 46 | int i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 47 | |
Christoph Hellwig | 51c91ed | 2005-09-02 16:58:38 +1000 | [diff] [blame] | 48 | for (i = 0; i < NVSYNC; i++) |
| 49 | init_waitqueue_head(&vsync[i]); |
| 50 | } |
| 51 | |
| 52 | void |
| 53 | vn_iowait( |
Christoph Hellwig | b677c21 | 2007-08-29 11:46:28 +1000 | [diff] [blame] | 54 | xfs_inode_t *ip) |
Christoph Hellwig | 51c91ed | 2005-09-02 16:58:38 +1000 | [diff] [blame] | 55 | { |
Christoph Hellwig | b677c21 | 2007-08-29 11:46:28 +1000 | [diff] [blame] | 56 | wait_queue_head_t *wq = vptosync(ip); |
Christoph Hellwig | 51c91ed | 2005-09-02 16:58:38 +1000 | [diff] [blame] | 57 | |
Christoph Hellwig | b677c21 | 2007-08-29 11:46:28 +1000 | [diff] [blame] | 58 | wait_event(*wq, (atomic_read(&ip->i_iocount) == 0)); |
Christoph Hellwig | 51c91ed | 2005-09-02 16:58:38 +1000 | [diff] [blame] | 59 | } |
| 60 | |
| 61 | void |
| 62 | vn_iowake( |
Christoph Hellwig | b677c21 | 2007-08-29 11:46:28 +1000 | [diff] [blame] | 63 | xfs_inode_t *ip) |
Christoph Hellwig | 51c91ed | 2005-09-02 16:58:38 +1000 | [diff] [blame] | 64 | { |
Christoph Hellwig | b677c21 | 2007-08-29 11:46:28 +1000 | [diff] [blame] | 65 | if (atomic_dec_and_test(&ip->i_iocount)) |
| 66 | wake_up(vptosync(ip)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 67 | } |
| 68 | |
Nathan Scott | 7d04a33 | 2006-06-09 14:58:38 +1000 | [diff] [blame] | 69 | /* |
| 70 | * Volume managers supporting multiple paths can send back ENODEV when the |
| 71 | * final path disappears. In this case continuing to fill the page cache |
| 72 | * with dirty data which cannot be written out is evil, so prevent that. |
| 73 | */ |
| 74 | void |
| 75 | vn_ioerror( |
Christoph Hellwig | b677c21 | 2007-08-29 11:46:28 +1000 | [diff] [blame] | 76 | xfs_inode_t *ip, |
Nathan Scott | 7d04a33 | 2006-06-09 14:58:38 +1000 | [diff] [blame] | 77 | int error, |
| 78 | char *f, |
| 79 | int l) |
| 80 | { |
| 81 | if (unlikely(error == -ENODEV)) |
Christoph Hellwig | 745f691 | 2007-08-30 17:20:39 +1000 | [diff] [blame] | 82 | xfs_do_force_shutdown(ip->i_mount, SHUTDOWN_DEVICE_REQ, f, l); |
Nathan Scott | 7d04a33 | 2006-06-09 14:58:38 +1000 | [diff] [blame] | 83 | } |
| 84 | |
Lachlan McIlroy | cf441ee | 2008-02-07 16:42:19 +1100 | [diff] [blame] | 85 | #ifdef XFS_INODE_TRACE |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 86 | |
Christoph Hellwig | 1543d79 | 2007-08-29 11:46:47 +1000 | [diff] [blame] | 87 | /* |
| 88 | * Reference count of Linux inode if present, -1 if the xfs_inode |
| 89 | * has no associated Linux inode. |
| 90 | */ |
| 91 | static inline int xfs_icount(struct xfs_inode *ip) |
| 92 | { |
Christoph Hellwig | 5ec7f8c | 2008-08-13 16:22:40 +1000 | [diff] [blame] | 93 | struct inode *vp = VFS_I(ip); |
Christoph Hellwig | 1543d79 | 2007-08-29 11:46:47 +1000 | [diff] [blame] | 94 | |
| 95 | if (vp) |
| 96 | return vn_count(vp); |
| 97 | return -1; |
| 98 | } |
| 99 | |
| 100 | #define KTRACE_ENTER(ip, vk, s, line, ra) \ |
| 101 | ktrace_enter( (ip)->i_trace, \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 102 | /* 0 */ (void *)(__psint_t)(vk), \ |
| 103 | /* 1 */ (void *)(s), \ |
| 104 | /* 2 */ (void *)(__psint_t) line, \ |
Christoph Hellwig | 1543d79 | 2007-08-29 11:46:47 +1000 | [diff] [blame] | 105 | /* 3 */ (void *)(__psint_t)xfs_icount(ip), \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 106 | /* 4 */ (void *)(ra), \ |
Christoph Hellwig | b3aea4e | 2007-08-29 11:44:37 +1000 | [diff] [blame] | 107 | /* 5 */ NULL, \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 108 | /* 6 */ (void *)(__psint_t)current_cpu(), \ |
| 109 | /* 7 */ (void *)(__psint_t)current_pid(), \ |
| 110 | /* 8 */ (void *)__return_address, \ |
Christoph Hellwig | 02de1f0 | 2005-06-21 15:33:48 +1000 | [diff] [blame] | 111 | /* 9 */ NULL, NULL, NULL, NULL, NULL, NULL, NULL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 112 | |
| 113 | /* |
| 114 | * Vnode tracing code. |
| 115 | */ |
| 116 | void |
Lachlan McIlroy | cf441ee | 2008-02-07 16:42:19 +1100 | [diff] [blame] | 117 | _xfs_itrace_entry(xfs_inode_t *ip, const char *func, inst_t *ra) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 118 | { |
Lachlan McIlroy | cf441ee | 2008-02-07 16:42:19 +1100 | [diff] [blame] | 119 | KTRACE_ENTER(ip, INODE_KTRACE_ENTRY, func, 0, ra); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 120 | } |
| 121 | |
| 122 | void |
Lachlan McIlroy | cf441ee | 2008-02-07 16:42:19 +1100 | [diff] [blame] | 123 | _xfs_itrace_exit(xfs_inode_t *ip, const char *func, inst_t *ra) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 124 | { |
Lachlan McIlroy | cf441ee | 2008-02-07 16:42:19 +1100 | [diff] [blame] | 125 | KTRACE_ENTER(ip, INODE_KTRACE_EXIT, func, 0, ra); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 126 | } |
| 127 | |
| 128 | void |
Lachlan McIlroy | cf441ee | 2008-02-07 16:42:19 +1100 | [diff] [blame] | 129 | xfs_itrace_hold(xfs_inode_t *ip, char *file, int line, inst_t *ra) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 130 | { |
Lachlan McIlroy | cf441ee | 2008-02-07 16:42:19 +1100 | [diff] [blame] | 131 | KTRACE_ENTER(ip, INODE_KTRACE_HOLD, file, line, ra); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 132 | } |
| 133 | |
| 134 | void |
Lachlan McIlroy | cf441ee | 2008-02-07 16:42:19 +1100 | [diff] [blame] | 135 | _xfs_itrace_ref(xfs_inode_t *ip, char *file, int line, inst_t *ra) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 136 | { |
Lachlan McIlroy | cf441ee | 2008-02-07 16:42:19 +1100 | [diff] [blame] | 137 | KTRACE_ENTER(ip, INODE_KTRACE_REF, file, line, ra); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 138 | } |
| 139 | |
| 140 | void |
Lachlan McIlroy | cf441ee | 2008-02-07 16:42:19 +1100 | [diff] [blame] | 141 | xfs_itrace_rele(xfs_inode_t *ip, char *file, int line, inst_t *ra) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 142 | { |
Lachlan McIlroy | cf441ee | 2008-02-07 16:42:19 +1100 | [diff] [blame] | 143 | KTRACE_ENTER(ip, INODE_KTRACE_RELE, file, line, ra); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 144 | } |
Lachlan McIlroy | cf441ee | 2008-02-07 16:42:19 +1100 | [diff] [blame] | 145 | #endif /* XFS_INODE_TRACE */ |