| /* |
| * Copyright (c) 2000,2005 Silicon Graphics, Inc. |
| * All Rights Reserved. |
| * |
| * This program is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU General Public License as |
| * published by the Free Software Foundation. |
| * |
| * This program is distributed in the hope that it would 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 for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| */ |
| #include "xfs.h" |
| #include "xfs_fs.h" |
| #include "xfs_shared.h" |
| #include "xfs_format.h" |
| #include "xfs_log_format.h" |
| #include "xfs_trans_resv.h" |
| #include "xfs_mount.h" |
| #include "xfs_inode.h" |
| #include "xfs_trans.h" |
| #include "xfs_trans_priv.h" |
| #include "xfs_inode_item.h" |
| #include "xfs_trace.h" |
| |
| #include <linux/iversion.h> |
| |
| /* |
| * Add a locked inode to the transaction. |
| * |
| * The inode must be locked, and it cannot be associated with any transaction. |
| * If lock_flags is non-zero the inode will be unlocked on transaction commit. |
| */ |
| void |
| xfs_trans_ijoin( |
| struct xfs_trans *tp, |
| struct xfs_inode *ip, |
| uint lock_flags) |
| { |
| xfs_inode_log_item_t *iip; |
| |
| ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
| if (ip->i_itemp == NULL) |
| xfs_inode_item_init(ip, ip->i_mount); |
| iip = ip->i_itemp; |
| |
| ASSERT(iip->ili_lock_flags == 0); |
| iip->ili_lock_flags = lock_flags; |
| |
| /* |
| * Get a log_item_desc to point at the new item. |
| */ |
| xfs_trans_add_item(tp, &iip->ili_item); |
| } |
| |
| /* |
| * Transactional inode timestamp update. Requires the inode to be locked and |
| * joined to the transaction supplied. Relies on the transaction subsystem to |
| * track dirty state and update/writeback the inode accordingly. |
| */ |
| void |
| xfs_trans_ichgtime( |
| struct xfs_trans *tp, |
| struct xfs_inode *ip, |
| int flags) |
| { |
| struct inode *inode = VFS_I(ip); |
| struct timespec tv; |
| |
| ASSERT(tp); |
| ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
| |
| tv = current_time(inode); |
| |
| if (flags & XFS_ICHGTIME_MOD) |
| inode->i_mtime = tv; |
| if (flags & XFS_ICHGTIME_CHG) |
| inode->i_ctime = tv; |
| } |
| |
| /* |
| * This is called to mark the fields indicated in fieldmask as needing |
| * to be logged when the transaction is committed. The inode must |
| * already be associated with the given transaction. |
| * |
| * The values for fieldmask are defined in xfs_inode_item.h. We always |
| * log all of the core inode if any of it has changed, and we always log |
| * all of the inline data/extents/b-tree root if any of them has changed. |
| */ |
| void |
| xfs_trans_log_inode( |
| xfs_trans_t *tp, |
| xfs_inode_t *ip, |
| uint flags) |
| { |
| struct inode *inode = VFS_I(ip); |
| |
| ASSERT(ip->i_itemp != NULL); |
| ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
| |
| /* |
| * Don't bother with i_lock for the I_DIRTY_TIME check here, as races |
| * don't matter - we either will need an extra transaction in 24 hours |
| * to log the timestamps, or will clear already cleared fields in the |
| * worst case. |
| */ |
| if (inode->i_state & (I_DIRTY_TIME | I_DIRTY_TIME_EXPIRED)) { |
| spin_lock(&inode->i_lock); |
| inode->i_state &= ~(I_DIRTY_TIME | I_DIRTY_TIME_EXPIRED); |
| spin_unlock(&inode->i_lock); |
| } |
| |
| /* |
| * Record the specific change for fdatasync optimisation. This |
| * allows fdatasync to skip log forces for inodes that are only |
| * timestamp dirty. We do this before the change count so that |
| * the core being logged in this case does not impact on fdatasync |
| * behaviour. |
| */ |
| ip->i_itemp->ili_fsync_fields |= flags; |
| |
| /* |
| * First time we log the inode in a transaction, bump the inode change |
| * counter if it is configured for this to occur. While we have the |
| * inode locked exclusively for metadata modification, we can usually |
| * avoid setting XFS_ILOG_CORE if no one has queried the value since |
| * the last time it was incremented. If we have XFS_ILOG_CORE already |
| * set however, then go ahead and bump the i_version counter |
| * unconditionally. |
| */ |
| if (!test_and_set_bit(XFS_LI_DIRTY, &ip->i_itemp->ili_item.li_flags) && |
| IS_I_VERSION(VFS_I(ip))) { |
| if (inode_maybe_inc_iversion(VFS_I(ip), flags & XFS_ILOG_CORE)) |
| flags |= XFS_ILOG_CORE; |
| } |
| |
| tp->t_flags |= XFS_TRANS_DIRTY; |
| |
| /* |
| * Always OR in the bits from the ili_last_fields field. |
| * This is to coordinate with the xfs_iflush() and xfs_iflush_done() |
| * routines in the eventual clearing of the ili_fields bits. |
| * See the big comment in xfs_iflush() for an explanation of |
| * this coordination mechanism. |
| */ |
| flags |= ip->i_itemp->ili_last_fields; |
| ip->i_itemp->ili_fields |= flags; |
| } |
| |
| int |
| xfs_trans_roll_inode( |
| struct xfs_trans **tpp, |
| struct xfs_inode *ip) |
| { |
| int error; |
| |
| xfs_trans_log_inode(*tpp, ip, XFS_ILOG_CORE); |
| error = xfs_trans_roll(tpp); |
| if (!error) |
| xfs_trans_ijoin(*tpp, ip, 0); |
| return error; |
| } |