1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * Copyright (c) 2000,2005 Silicon Graphics, Inc. 4 * All Rights Reserved. 5 */ 6 #include "xfs.h" 7 #include "xfs_fs.h" 8 #include "xfs_shared.h" 9 #include "xfs_format.h" 10 #include "xfs_log_format.h" 11 #include "xfs_trans_resv.h" 12 #include "xfs_mount.h" 13 #include "xfs_inode.h" 14 #include "xfs_trans.h" 15 #include "xfs_trans_priv.h" 16 #include "xfs_inode_item.h" 17 18 #include <linux/iversion.h> 19 20 /* 21 * Add a locked inode to the transaction. 22 * 23 * The inode must be locked, and it cannot be associated with any transaction. 24 * If lock_flags is non-zero the inode will be unlocked on transaction commit. 25 */ 26 void 27 xfs_trans_ijoin( 28 struct xfs_trans *tp, 29 struct xfs_inode *ip, 30 uint lock_flags) 31 { 32 struct xfs_inode_log_item *iip; 33 34 xfs_assert_ilocked(ip, XFS_ILOCK_EXCL); 35 if (ip->i_itemp == NULL) 36 xfs_inode_item_init(ip, ip->i_mount); 37 iip = ip->i_itemp; 38 39 ASSERT(iip->ili_lock_flags == 0); 40 iip->ili_lock_flags = lock_flags; 41 ASSERT(!xfs_iflags_test(ip, XFS_ISTALE)); 42 43 /* Reset the per-tx dirty context and add the item to the tx. */ 44 iip->ili_dirty_flags = 0; 45 xfs_trans_add_item(tp, &iip->ili_item); 46 } 47 48 /* 49 * Transactional inode timestamp update. Requires the inode to be locked and 50 * joined to the transaction supplied. Relies on the transaction subsystem to 51 * track dirty state and update/writeback the inode accordingly. 52 */ 53 void 54 xfs_trans_ichgtime( 55 struct xfs_trans *tp, 56 struct xfs_inode *ip, 57 int flags) 58 { 59 struct inode *inode = VFS_I(ip); 60 struct timespec64 tv; 61 62 ASSERT(tp); 63 xfs_assert_ilocked(ip, XFS_ILOCK_EXCL); 64 65 tv = current_time(inode); 66 67 if (flags & XFS_ICHGTIME_MOD) 68 inode_set_mtime_to_ts(inode, tv); 69 if (flags & XFS_ICHGTIME_CHG) 70 inode_set_ctime_to_ts(inode, tv); 71 if (flags & XFS_ICHGTIME_ACCESS) 72 inode_set_atime_to_ts(inode, tv); 73 if (flags & XFS_ICHGTIME_CREATE) 74 ip->i_crtime = tv; 75 } 76 77 /* 78 * This is called to mark the fields indicated in fieldmask as needing to be 79 * logged when the transaction is committed. The inode must already be 80 * associated with the given transaction. All we do here is record where the 81 * inode was dirtied and mark the transaction and inode log item dirty; 82 * everything else is done in the ->precommit log item operation after the 83 * changes in the transaction have been completed. 84 */ 85 void 86 xfs_trans_log_inode( 87 struct xfs_trans *tp, 88 struct xfs_inode *ip, 89 uint flags) 90 { 91 struct xfs_inode_log_item *iip = ip->i_itemp; 92 struct inode *inode = VFS_I(ip); 93 94 ASSERT(iip); 95 xfs_assert_ilocked(ip, XFS_ILOCK_EXCL); 96 ASSERT(!xfs_iflags_test(ip, XFS_ISTALE)); 97 98 tp->t_flags |= XFS_TRANS_DIRTY; 99 100 /* 101 * First time we log the inode in a transaction, bump the inode change 102 * counter if it is configured for this to occur. While we have the 103 * inode locked exclusively for metadata modification, we can usually 104 * avoid setting XFS_ILOG_CORE if no one has queried the value since 105 * the last time it was incremented. If we have XFS_ILOG_CORE already 106 * set however, then go ahead and bump the i_version counter 107 * unconditionally. 108 */ 109 if (!test_and_set_bit(XFS_LI_DIRTY, &iip->ili_item.li_flags)) { 110 if (IS_I_VERSION(inode) && 111 inode_maybe_inc_iversion(inode, flags & XFS_ILOG_CORE)) 112 flags |= XFS_ILOG_IVERSION; 113 } 114 115 iip->ili_dirty_flags |= flags; 116 } 117 118 int 119 xfs_trans_roll_inode( 120 struct xfs_trans **tpp, 121 struct xfs_inode *ip) 122 { 123 int error; 124 125 xfs_trans_log_inode(*tpp, ip, XFS_ILOG_CORE); 126 error = xfs_trans_roll(tpp); 127 if (!error) 128 xfs_trans_ijoin(*tpp, ip, 0); 129 return error; 130 } 131