Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) International Business Machines Corp., 2000-2004 |
| 3 | * |
| 4 | * This program is free software; you can redistribute it and/or modify |
| 5 | * it under the terms of the GNU General Public License as published by |
Dave Kleikamp | 63f83c9 | 2006-10-02 09:55:27 -0500 | [diff] [blame] | 6 | * the Free Software Foundation; either version 2 of the License, or |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 7 | * (at your option) any later version. |
Dave Kleikamp | 63f83c9 | 2006-10-02 09:55:27 -0500 | [diff] [blame] | 8 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 9 | * This program is distributed in the hope that it will be useful, |
| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See |
| 12 | * the GNU General Public License for more details. |
| 13 | * |
| 14 | * You should have received a copy of the GNU General Public License |
Dave Kleikamp | 63f83c9 | 2006-10-02 09:55:27 -0500 | [diff] [blame] | 15 | * along with this program; if not, write to the Free Software |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 16 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 17 | */ |
| 18 | |
| 19 | /* |
| 20 | * jfs_umount.c |
| 21 | * |
| 22 | * note: file system in transition to aggregate/fileset: |
| 23 | * (ref. jfs_mount.c) |
| 24 | * |
Dave Kleikamp | 63f83c9 | 2006-10-02 09:55:27 -0500 | [diff] [blame] | 25 | * file system unmount is interpreted as mount of the single/only |
| 26 | * fileset in the aggregate and, if unmount of the last fileset, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 27 | * as unmount of the aggerate; |
| 28 | */ |
| 29 | |
| 30 | #include <linux/fs.h> |
| 31 | #include "jfs_incore.h" |
| 32 | #include "jfs_filsys.h" |
| 33 | #include "jfs_superblock.h" |
| 34 | #include "jfs_dmap.h" |
| 35 | #include "jfs_imap.h" |
| 36 | #include "jfs_metapage.h" |
| 37 | #include "jfs_debug.h" |
| 38 | |
| 39 | /* |
| 40 | * NAME: jfs_umount(vfsp, flags, crp) |
| 41 | * |
| 42 | * FUNCTION: vfs_umount() |
| 43 | * |
| 44 | * PARAMETERS: vfsp - virtual file system pointer |
| 45 | * flags - unmount for shutdown |
| 46 | * crp - credential |
| 47 | * |
| 48 | * RETURN : EBUSY - device has open files |
| 49 | */ |
| 50 | int jfs_umount(struct super_block *sb) |
| 51 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 52 | struct jfs_sb_info *sbi = JFS_SBI(sb); |
| 53 | struct inode *ipbmap = sbi->ipbmap; |
| 54 | struct inode *ipimap = sbi->ipimap; |
| 55 | struct inode *ipaimap = sbi->ipaimap; |
| 56 | struct inode *ipaimap2 = sbi->ipaimap2; |
| 57 | struct jfs_log *log; |
| 58 | int rc = 0; |
| 59 | |
| 60 | jfs_info("UnMount JFS: sb:0x%p", sb); |
| 61 | |
| 62 | /* |
Dave Kleikamp | f720e3b | 2007-06-06 15:28:35 -0500 | [diff] [blame] | 63 | * update superblock and close log |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 64 | * |
| 65 | * if mounted read-write and log based recovery was enabled |
| 66 | */ |
| 67 | if ((log = sbi->log)) |
| 68 | /* |
Dave Kleikamp | 63f83c9 | 2006-10-02 09:55:27 -0500 | [diff] [blame] | 69 | * Wait for outstanding transactions to be written to log: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 70 | */ |
| 71 | jfs_flush_journal(log, 2); |
| 72 | |
| 73 | /* |
| 74 | * close fileset inode allocation map (aka fileset inode) |
| 75 | */ |
| 76 | diUnmount(ipimap, 0); |
| 77 | |
| 78 | diFreeSpecial(ipimap); |
| 79 | sbi->ipimap = NULL; |
| 80 | |
| 81 | /* |
| 82 | * close secondary aggregate inode allocation map |
| 83 | */ |
| 84 | ipaimap2 = sbi->ipaimap2; |
| 85 | if (ipaimap2) { |
| 86 | diUnmount(ipaimap2, 0); |
| 87 | diFreeSpecial(ipaimap2); |
| 88 | sbi->ipaimap2 = NULL; |
| 89 | } |
| 90 | |
| 91 | /* |
| 92 | * close aggregate inode allocation map |
| 93 | */ |
| 94 | ipaimap = sbi->ipaimap; |
| 95 | diUnmount(ipaimap, 0); |
| 96 | diFreeSpecial(ipaimap); |
| 97 | sbi->ipaimap = NULL; |
| 98 | |
| 99 | /* |
| 100 | * close aggregate block allocation map |
| 101 | */ |
| 102 | dbUnmount(ipbmap, 0); |
| 103 | |
| 104 | diFreeSpecial(ipbmap); |
| 105 | sbi->ipimap = NULL; |
| 106 | |
| 107 | /* |
| 108 | * Make sure all metadata makes it to disk before we mark |
| 109 | * the superblock as clean |
| 110 | */ |
OGAWA Hirofumi | 28fd129 | 2006-01-08 01:02:14 -0800 | [diff] [blame] | 111 | filemap_write_and_wait(sbi->direct_inode->i_mapping); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 112 | |
| 113 | /* |
| 114 | * ensure all file system file pages are propagated to their |
Dave Kleikamp | 63f83c9 | 2006-10-02 09:55:27 -0500 | [diff] [blame] | 115 | * home blocks on disk (and their in-memory buffer pages are |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 116 | * invalidated) BEFORE updating file system superblock state |
Dave Kleikamp | 63f83c9 | 2006-10-02 09:55:27 -0500 | [diff] [blame] | 117 | * (to signify file system is unmounted cleanly, and thus in |
| 118 | * consistent state) and log superblock active file system |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 119 | * list (to signify skip logredo()). |
| 120 | */ |
| 121 | if (log) { /* log = NULL if read-only mount */ |
| 122 | updateSuper(sb, FM_CLEAN); |
| 123 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 124 | /* |
Dave Kleikamp | 63f83c9 | 2006-10-02 09:55:27 -0500 | [diff] [blame] | 125 | * close log: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 126 | * |
| 127 | * remove file system from log active file system list. |
| 128 | */ |
| 129 | rc = lmLogClose(sb); |
| 130 | } |
| 131 | jfs_info("UnMount JFS Complete: rc = %d", rc); |
| 132 | return rc; |
| 133 | } |
| 134 | |
| 135 | |
| 136 | int jfs_umount_rw(struct super_block *sb) |
| 137 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 138 | struct jfs_sb_info *sbi = JFS_SBI(sb); |
| 139 | struct jfs_log *log = sbi->log; |
| 140 | |
| 141 | if (!log) |
| 142 | return 0; |
| 143 | |
| 144 | /* |
Dave Kleikamp | 63f83c9 | 2006-10-02 09:55:27 -0500 | [diff] [blame] | 145 | * close log: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 146 | * |
| 147 | * remove file system from log active file system list. |
| 148 | */ |
| 149 | jfs_flush_journal(log, 2); |
| 150 | |
| 151 | /* |
| 152 | * Make sure all metadata makes it to disk |
| 153 | */ |
| 154 | dbSync(sbi->ipbmap); |
| 155 | diSync(sbi->ipimap); |
| 156 | |
| 157 | /* |
| 158 | * Note that we have to do this even if sync_blockdev() will |
| 159 | * do exactly the same a few instructions later: We can't |
| 160 | * mark the superblock clean before everything is flushed to |
| 161 | * disk. |
| 162 | */ |
OGAWA Hirofumi | 28fd129 | 2006-01-08 01:02:14 -0800 | [diff] [blame] | 163 | filemap_write_and_wait(sbi->direct_inode->i_mapping); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 164 | |
| 165 | updateSuper(sb, FM_CLEAN); |
| 166 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 167 | return lmLogClose(sb); |
| 168 | } |