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f5d8d5c4bf
Add a new ili_fields member to the inode log item to isolate the in-memory flags from the ones that actually go to the log. This will allow tracking timestamp-only updates for fdatasync and O_DSYNC in the next patch and prepares for divorcing the on-disk log format from the in-memory log item a little further down the road. Reviewed-by: Dave Chinner <dchinner@redhat.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Mark Tinguely <tinguely@sgi.com> Signed-off-by: Ben Myers <bpm@sgi.com>
171 lines
4.5 KiB
C
171 lines
4.5 KiB
C
/*
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* Copyright (c) 2000,2005 Silicon Graphics, Inc.
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* All Rights Reserved.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it would be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "xfs.h"
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#include "xfs_fs.h"
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#include "xfs_types.h"
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#include "xfs_bit.h"
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#include "xfs_log.h"
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#include "xfs_inum.h"
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#include "xfs_trans.h"
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#include "xfs_sb.h"
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#include "xfs_ag.h"
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#include "xfs_mount.h"
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#include "xfs_bmap_btree.h"
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#include "xfs_alloc_btree.h"
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#include "xfs_ialloc_btree.h"
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#include "xfs_dinode.h"
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#include "xfs_inode.h"
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#include "xfs_btree.h"
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#include "xfs_trans_priv.h"
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#include "xfs_inode_item.h"
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#include "xfs_trace.h"
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#ifdef XFS_TRANS_DEBUG
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STATIC void
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xfs_trans_inode_broot_debug(
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xfs_inode_t *ip);
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#else
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#define xfs_trans_inode_broot_debug(ip)
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#endif
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/*
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* Add a locked inode to the transaction.
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*
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* The inode must be locked, and it cannot be associated with any transaction.
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* If lock_flags is non-zero the inode will be unlocked on transaction commit.
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*/
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void
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xfs_trans_ijoin(
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struct xfs_trans *tp,
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struct xfs_inode *ip,
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uint lock_flags)
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{
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xfs_inode_log_item_t *iip;
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ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL));
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if (ip->i_itemp == NULL)
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xfs_inode_item_init(ip, ip->i_mount);
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iip = ip->i_itemp;
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ASSERT(iip->ili_lock_flags == 0);
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iip->ili_lock_flags = lock_flags;
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/*
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* Get a log_item_desc to point at the new item.
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*/
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xfs_trans_add_item(tp, &iip->ili_item);
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xfs_trans_inode_broot_debug(ip);
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}
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/*
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* Transactional inode timestamp update. Requires the inode to be locked and
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* joined to the transaction supplied. Relies on the transaction subsystem to
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* track dirty state and update/writeback the inode accordingly.
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*/
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void
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xfs_trans_ichgtime(
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struct xfs_trans *tp,
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struct xfs_inode *ip,
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int flags)
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{
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struct inode *inode = VFS_I(ip);
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timespec_t tv;
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ASSERT(tp);
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ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL));
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tv = current_fs_time(inode->i_sb);
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if ((flags & XFS_ICHGTIME_MOD) &&
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!timespec_equal(&inode->i_mtime, &tv)) {
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inode->i_mtime = tv;
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ip->i_d.di_mtime.t_sec = tv.tv_sec;
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ip->i_d.di_mtime.t_nsec = tv.tv_nsec;
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}
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if ((flags & XFS_ICHGTIME_CHG) &&
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!timespec_equal(&inode->i_ctime, &tv)) {
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inode->i_ctime = tv;
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ip->i_d.di_ctime.t_sec = tv.tv_sec;
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ip->i_d.di_ctime.t_nsec = tv.tv_nsec;
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}
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}
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/*
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* This is called to mark the fields indicated in fieldmask as needing
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* to be logged when the transaction is committed. The inode must
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* already be associated with the given transaction.
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*
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* The values for fieldmask are defined in xfs_inode_item.h. We always
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* log all of the core inode if any of it has changed, and we always log
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* all of the inline data/extents/b-tree root if any of them has changed.
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*/
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void
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xfs_trans_log_inode(
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xfs_trans_t *tp,
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xfs_inode_t *ip,
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uint flags)
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{
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ASSERT(ip->i_itemp != NULL);
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ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL));
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tp->t_flags |= XFS_TRANS_DIRTY;
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ip->i_itemp->ili_item.li_desc->lid_flags |= XFS_LID_DIRTY;
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/*
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* Always OR in the bits from the ili_last_fields field.
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* This is to coordinate with the xfs_iflush() and xfs_iflush_done()
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* routines in the eventual clearing of the ili_fields bits.
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* See the big comment in xfs_iflush() for an explanation of
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* this coordination mechanism.
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*/
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flags |= ip->i_itemp->ili_last_fields;
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ip->i_itemp->ili_fields |= flags;
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}
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#ifdef XFS_TRANS_DEBUG
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/*
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* Keep track of the state of the inode btree root to make sure we
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* log it properly.
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*/
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STATIC void
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xfs_trans_inode_broot_debug(
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xfs_inode_t *ip)
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{
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xfs_inode_log_item_t *iip;
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ASSERT(ip->i_itemp != NULL);
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iip = ip->i_itemp;
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if (iip->ili_root_size != 0) {
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ASSERT(iip->ili_orig_root != NULL);
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kmem_free(iip->ili_orig_root);
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iip->ili_root_size = 0;
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iip->ili_orig_root = NULL;
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}
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if (ip->i_d.di_format == XFS_DINODE_FMT_BTREE) {
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ASSERT((ip->i_df.if_broot != NULL) &&
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(ip->i_df.if_broot_bytes > 0));
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iip->ili_root_size = ip->i_df.if_broot_bytes;
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iip->ili_orig_root =
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(char*)kmem_alloc(iip->ili_root_size, KM_SLEEP);
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memcpy(iip->ili_orig_root, (char*)(ip->i_df.if_broot),
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iip->ili_root_size);
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}
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}
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#endif
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