| /* |
| * Copyright (c) 2000-2001,2005-2006 Silicon Graphics, Inc. |
| * Copyright (C) 2010 Red Hat, 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 "libxfs_priv.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_buf.h" |
| #include "xfs_inode_fork.h" |
| #include "xfs_inode.h" |
| #include "xfs_trans.h" |
| #include "xfs_sb.h" |
| |
| static void xfs_trans_free_items(struct xfs_trans *tp); |
| |
| /* |
| * Simple transaction interface |
| */ |
| |
| kmem_zone_t *xfs_log_item_desc_zone; |
| |
| /* |
| * Initialize the precomputed transaction reservation values |
| * in the mount structure. |
| */ |
| void |
| libxfs_trans_init( |
| struct xfs_mount *mp) |
| { |
| xfs_trans_resv_calc(mp, &mp->m_resv); |
| } |
| |
| /* |
| * Add the given log item to the transaction's list of log items. |
| * |
| * The log item will now point to its new descriptor with its li_desc field. |
| */ |
| void |
| libxfs_trans_add_item( |
| struct xfs_trans *tp, |
| struct xfs_log_item *lip) |
| { |
| struct xfs_log_item_desc *lidp; |
| |
| ASSERT(lip->li_mountp == tp->t_mountp); |
| ASSERT(lip->li_ailp == tp->t_mountp->m_ail); |
| |
| lidp = calloc(sizeof(struct xfs_log_item_desc), 1); |
| if (!lidp) { |
| fprintf(stderr, _("%s: lidp calloc failed (%d bytes): %s\n"), |
| progname, (int)sizeof(struct xfs_log_item_desc), |
| strerror(errno)); |
| exit(1); |
| } |
| |
| lidp->lid_item = lip; |
| lidp->lid_flags = 0; |
| list_add_tail(&lidp->lid_trans, &tp->t_items); |
| |
| lip->li_desc = lidp; |
| } |
| |
| /* |
| * Unlink and free the given descriptor. |
| */ |
| void |
| libxfs_trans_del_item( |
| struct xfs_log_item *lip) |
| { |
| list_del_init(&lip->li_desc->lid_trans); |
| free(lip->li_desc); |
| lip->li_desc = NULL; |
| } |
| |
| /* |
| * Roll from one trans in the sequence of PERMANENT transactions to |
| * the next: permanent transactions are only flushed out when |
| * committed with XFS_TRANS_RELEASE_LOG_RES, but we still want as soon |
| * as possible to let chunks of it go to the log. So we commit the |
| * chunk we've been working on and get a new transaction to continue. |
| */ |
| int |
| libxfs_trans_roll( |
| struct xfs_trans **tpp, |
| struct xfs_inode *dp) |
| { |
| struct xfs_mount *mp; |
| struct xfs_trans *trans; |
| struct xfs_trans_res tres; |
| int error; |
| |
| /* |
| * Ensure that the inode is always logged. |
| */ |
| trans = *tpp; |
| if (dp) |
| xfs_trans_log_inode(trans, dp, XFS_ILOG_CORE); |
| |
| /* |
| * Copy the critical parameters from one trans to the next. |
| */ |
| mp = trans->t_mountp; |
| tres.tr_logres = trans->t_log_res; |
| tres.tr_logcount = trans->t_log_count; |
| |
| /* |
| * Commit the current transaction. |
| * If this commit failed, then it'd just unlock those items that |
| * are marked to be released. That also means that a filesystem shutdown |
| * is in progress. The caller takes the responsibility to cancel |
| * the duplicate transaction that gets returned. |
| */ |
| error = xfs_trans_commit(trans); |
| if (error) |
| return error; |
| |
| |
| /* |
| * Reserve space in the log for th next transaction. |
| * This also pushes items in the "AIL", the list of logged items, |
| * out to disk if they are taking up space at the tail of the log |
| * that we want to use. This requires that either nothing be locked |
| * across this call, or that anything that is locked be logged in |
| * the prior and the next transactions. |
| */ |
| tres.tr_logflags = XFS_TRANS_PERM_LOG_RES; |
| error = libxfs_trans_alloc(mp, &tres, 0, 0, 0, tpp); |
| trans = *tpp; |
| /* |
| * Ensure that the inode is in the new transaction and locked. |
| */ |
| if (error) |
| return error; |
| |
| if (dp) |
| xfs_trans_ijoin(trans, dp, 0); |
| return 0; |
| } |
| |
| int |
| libxfs_trans_alloc( |
| struct xfs_mount *mp, |
| struct xfs_trans_res *resp, |
| unsigned int blocks, |
| unsigned int rtextents, |
| unsigned int flags, |
| struct xfs_trans **tpp) |
| |
| { |
| struct xfs_sb *sb = &mp->m_sb; |
| struct xfs_trans *ptr; |
| |
| /* |
| * Attempt to reserve the needed disk blocks by decrementing |
| * the number needed from the number available. This will |
| * fail if the count would go below zero. |
| */ |
| if (blocks > 0) { |
| if (sb->sb_fdblocks < blocks) |
| return -ENOSPC; |
| } |
| |
| if ((ptr = calloc(sizeof(xfs_trans_t), 1)) == NULL) { |
| fprintf(stderr, _("%s: xact calloc failed (%d bytes): %s\n"), |
| progname, (int)sizeof(xfs_trans_t), strerror(errno)); |
| exit(1); |
| } |
| ptr->t_mountp = mp; |
| INIT_LIST_HEAD(&ptr->t_items); |
| #ifdef XACT_DEBUG |
| fprintf(stderr, "allocated new transaction %p\n", ptr); |
| #endif |
| *tpp = ptr; |
| return 0; |
| } |
| |
| /* |
| * Create an empty transaction with no reservation. This is a defensive |
| * mechanism for routines that query metadata without actually modifying |
| * them -- if the metadata being queried is somehow cross-linked (think a |
| * btree block pointer that points higher in the tree), we risk deadlock. |
| * However, blocks grabbed as part of a transaction can be re-grabbed. |
| * The verifiers will notice the corrupt block and the operation will fail |
| * back to userspace without deadlocking. |
| * |
| * Note the zero-length reservation; this transaction MUST be cancelled |
| * without any dirty data. |
| */ |
| int |
| xfs_trans_alloc_empty( |
| struct xfs_mount *mp, |
| struct xfs_trans **tpp) |
| { |
| struct xfs_trans_res resv = {0}; |
| |
| return xfs_trans_alloc(mp, &resv, 0, 0, XFS_TRANS_NO_WRITECOUNT, tpp); |
| } |
| |
| void |
| libxfs_trans_cancel( |
| xfs_trans_t *tp) |
| { |
| #ifdef XACT_DEBUG |
| xfs_trans_t *otp = tp; |
| #endif |
| if (tp != NULL) { |
| xfs_trans_free_items(tp); |
| free(tp); |
| tp = NULL; |
| } |
| #ifdef XACT_DEBUG |
| fprintf(stderr, "## cancelled transaction %p\n", otp); |
| #endif |
| } |
| |
| int |
| libxfs_trans_iget( |
| xfs_mount_t *mp, |
| xfs_trans_t *tp, |
| xfs_ino_t ino, |
| uint flags, |
| uint lock_flags, |
| xfs_inode_t **ipp) |
| { |
| int error; |
| xfs_inode_t *ip; |
| xfs_inode_log_item_t *iip; |
| |
| if (tp == NULL) |
| return libxfs_iget(mp, tp, ino, lock_flags, ipp); |
| |
| error = libxfs_iget(mp, tp, ino, lock_flags, &ip); |
| if (error) |
| return error; |
| ASSERT(ip != NULL); |
| |
| if (ip->i_itemp == NULL) |
| xfs_inode_item_init(ip, mp); |
| iip = ip->i_itemp; |
| xfs_trans_add_item(tp, (xfs_log_item_t *)(iip)); |
| |
| /* initialize i_transp so we can find it incore */ |
| ip->i_transp = tp; |
| |
| *ipp = ip; |
| return 0; |
| } |
| |
| void |
| libxfs_trans_ijoin( |
| xfs_trans_t *tp, |
| xfs_inode_t *ip, |
| uint lock_flags) |
| { |
| xfs_inode_log_item_t *iip; |
| |
| ASSERT(ip->i_transp == NULL); |
| if (ip->i_itemp == NULL) |
| xfs_inode_item_init(ip, ip->i_mount); |
| iip = ip->i_itemp; |
| ASSERT(iip->ili_flags == 0); |
| ASSERT(iip->ili_inode != NULL); |
| |
| xfs_trans_add_item(tp, (xfs_log_item_t *)(iip)); |
| |
| ip->i_transp = tp; |
| #ifdef XACT_DEBUG |
| fprintf(stderr, "ijoin'd inode %llu, transaction %p\n", ip->i_ino, tp); |
| #endif |
| } |
| |
| void |
| libxfs_trans_ijoin_ref( |
| xfs_trans_t *tp, |
| xfs_inode_t *ip, |
| int lock_flags) |
| { |
| ASSERT(ip->i_transp == tp); |
| ASSERT(ip->i_itemp != NULL); |
| |
| xfs_trans_ijoin(tp, ip, lock_flags); |
| |
| #ifdef XACT_DEBUG |
| fprintf(stderr, "ijoin_ref'd inode %llu, transaction %p\n", ip->i_ino, tp); |
| #endif |
| } |
| |
| void |
| libxfs_trans_inode_alloc_buf( |
| xfs_trans_t *tp, |
| xfs_buf_t *bp) |
| { |
| xfs_buf_log_item_t *bip; |
| |
| ASSERT(XFS_BUF_FSPRIVATE2(bp, xfs_trans_t *) == tp); |
| ASSERT(XFS_BUF_FSPRIVATE(bp, void *) != NULL); |
| bip = XFS_BUF_FSPRIVATE(bp, xfs_buf_log_item_t *); |
| bip->bli_flags |= XFS_BLI_INODE_ALLOC_BUF; |
| xfs_trans_buf_set_type(tp, bp, XFS_BLFT_DINO_BUF); |
| } |
| |
| /* |
| * 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_log_format.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) |
| { |
| ASSERT(ip->i_transp == tp); |
| ASSERT(ip->i_itemp != NULL); |
| #ifdef XACT_DEBUG |
| fprintf(stderr, "dirtied inode %llu, transaction %p\n", ip->i_ino, tp); |
| #endif |
| |
| tp->t_flags |= XFS_TRANS_DIRTY; |
| ip->i_itemp->ili_item.li_desc->lid_flags |= XFS_LID_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 ilf_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; |
| } |
| |
| /* |
| * This is called to mark bytes first through last inclusive of the given |
| * buffer as needing to be logged when the transaction is committed. |
| * The buffer must already be associated with the given transaction. |
| * |
| * First and last are numbers relative to the beginning of this buffer, |
| * so the first byte in the buffer is numbered 0 regardless of the |
| * value of b_blkno. |
| */ |
| void |
| libxfs_trans_log_buf( |
| xfs_trans_t *tp, |
| xfs_buf_t *bp, |
| uint first, |
| uint last) |
| { |
| xfs_buf_log_item_t *bip; |
| |
| ASSERT(XFS_BUF_FSPRIVATE2(bp, xfs_trans_t *) == tp); |
| ASSERT(XFS_BUF_FSPRIVATE(bp, void *) != NULL); |
| ASSERT((first <= last) && (last < XFS_BUF_COUNT(bp))); |
| #ifdef XACT_DEBUG |
| fprintf(stderr, "dirtied buffer %p, transaction %p\n", bp, tp); |
| #endif |
| |
| bip = XFS_BUF_FSPRIVATE(bp, xfs_buf_log_item_t *); |
| |
| tp->t_flags |= XFS_TRANS_DIRTY; |
| bip->bli_item.li_desc->lid_flags |= XFS_LID_DIRTY; |
| xfs_buf_item_log(bip, first, last); |
| } |
| |
| void |
| libxfs_trans_brelse( |
| xfs_trans_t *tp, |
| xfs_buf_t *bp) |
| { |
| xfs_buf_log_item_t *bip; |
| #ifdef XACT_DEBUG |
| fprintf(stderr, "released buffer %p, transaction %p\n", bp, tp); |
| #endif |
| |
| if (tp == NULL) { |
| ASSERT(XFS_BUF_FSPRIVATE2(bp, void *) == NULL); |
| libxfs_putbuf(bp); |
| return; |
| } |
| ASSERT(XFS_BUF_FSPRIVATE2(bp, xfs_trans_t *) == tp); |
| bip = XFS_BUF_FSPRIVATE(bp, xfs_buf_log_item_t *); |
| ASSERT(bip->bli_item.li_type == XFS_LI_BUF); |
| if (bip->bli_recur > 0) { |
| bip->bli_recur--; |
| return; |
| } |
| /* If dirty/stale, can't release till transaction committed */ |
| if (bip->bli_flags & XFS_BLI_STALE) |
| return; |
| if (bip->bli_item.li_desc->lid_flags & XFS_LID_DIRTY) |
| return; |
| xfs_trans_del_item(&bip->bli_item); |
| if (bip->bli_flags & XFS_BLI_HOLD) |
| bip->bli_flags &= ~XFS_BLI_HOLD; |
| XFS_BUF_SET_FSPRIVATE2(bp, NULL); |
| libxfs_putbuf(bp); |
| } |
| |
| void |
| libxfs_trans_binval( |
| xfs_trans_t *tp, |
| xfs_buf_t *bp) |
| { |
| xfs_buf_log_item_t *bip; |
| #ifdef XACT_DEBUG |
| fprintf(stderr, "binval'd buffer %p, transaction %p\n", bp, tp); |
| #endif |
| |
| ASSERT(XFS_BUF_FSPRIVATE2(bp, xfs_trans_t *) == tp); |
| ASSERT(XFS_BUF_FSPRIVATE(bp, void *) != NULL); |
| |
| bip = XFS_BUF_FSPRIVATE(bp, xfs_buf_log_item_t *); |
| if (bip->bli_flags & XFS_BLI_STALE) |
| return; |
| XFS_BUF_UNDELAYWRITE(bp); |
| xfs_buf_stale(bp); |
| bip->bli_flags |= XFS_BLI_STALE; |
| bip->bli_flags &= ~XFS_BLI_DIRTY; |
| bip->bli_format.blf_flags &= ~XFS_BLF_INODE_BUF; |
| bip->bli_format.blf_flags |= XFS_BLF_CANCEL; |
| bip->bli_item.li_desc->lid_flags |= XFS_LID_DIRTY; |
| tp->t_flags |= XFS_TRANS_DIRTY; |
| } |
| |
| void |
| libxfs_trans_bjoin( |
| xfs_trans_t *tp, |
| xfs_buf_t *bp) |
| { |
| xfs_buf_log_item_t *bip; |
| |
| ASSERT(XFS_BUF_FSPRIVATE2(bp, void *) == NULL); |
| #ifdef XACT_DEBUG |
| fprintf(stderr, "bjoin'd buffer %p, transaction %p\n", bp, tp); |
| #endif |
| |
| xfs_buf_item_init(bp, tp->t_mountp); |
| bip = XFS_BUF_FSPRIVATE(bp, xfs_buf_log_item_t *); |
| xfs_trans_add_item(tp, (xfs_log_item_t *)bip); |
| XFS_BUF_SET_FSPRIVATE2(bp, tp); |
| } |
| |
| void |
| libxfs_trans_bhold( |
| xfs_trans_t *tp, |
| xfs_buf_t *bp) |
| { |
| xfs_buf_log_item_t *bip; |
| |
| ASSERT(XFS_BUF_FSPRIVATE2(bp, xfs_trans_t *) == tp); |
| ASSERT(XFS_BUF_FSPRIVATE(bp, void *) != NULL); |
| #ifdef XACT_DEBUG |
| fprintf(stderr, "bhold'd buffer %p, transaction %p\n", bp, tp); |
| #endif |
| |
| bip = XFS_BUF_FSPRIVATE(bp, xfs_buf_log_item_t *); |
| bip->bli_flags |= XFS_BLI_HOLD; |
| } |
| |
| xfs_buf_t * |
| libxfs_trans_get_buf_map( |
| xfs_trans_t *tp, |
| struct xfs_buftarg *btp, |
| struct xfs_buf_map *map, |
| int nmaps, |
| uint f) |
| { |
| xfs_buf_t *bp; |
| xfs_buf_log_item_t *bip; |
| |
| if (tp == NULL) |
| return libxfs_getbuf_map(btp, map, nmaps, 0); |
| |
| bp = xfs_trans_buf_item_match(tp, btp, map, nmaps); |
| if (bp != NULL) { |
| ASSERT(XFS_BUF_FSPRIVATE2(bp, xfs_trans_t *) == tp); |
| bip = XFS_BUF_FSPRIVATE(bp, xfs_buf_log_item_t *); |
| ASSERT(bip != NULL); |
| bip->bli_recur++; |
| return bp; |
| } |
| |
| bp = libxfs_getbuf_map(btp, map, nmaps, 0); |
| if (bp == NULL) |
| return NULL; |
| #ifdef XACT_DEBUG |
| fprintf(stderr, "trans_get_buf buffer %p, transaction %p\n", bp, tp); |
| #endif |
| |
| xfs_buf_item_init(bp, tp->t_mountp); |
| bip = XFS_BUF_FSPRIVATE(bp, xfs_buf_log_item_t*); |
| bip->bli_recur = 0; |
| xfs_trans_add_item(tp, (xfs_log_item_t *)bip); |
| |
| /* initialize b_fsprivate2 so we can find it incore */ |
| XFS_BUF_SET_FSPRIVATE2(bp, tp); |
| return bp; |
| } |
| |
| xfs_buf_t * |
| libxfs_trans_getsb( |
| xfs_trans_t *tp, |
| xfs_mount_t *mp, |
| int flags) |
| { |
| xfs_buf_t *bp; |
| xfs_buf_log_item_t *bip; |
| int len = XFS_FSS_TO_BB(mp, 1); |
| DEFINE_SINGLE_BUF_MAP(map, XFS_SB_DADDR, len); |
| |
| if (tp == NULL) |
| return libxfs_getsb(mp, flags); |
| |
| bp = xfs_trans_buf_item_match(tp, mp->m_dev, &map, 1); |
| if (bp != NULL) { |
| ASSERT(XFS_BUF_FSPRIVATE2(bp, xfs_trans_t *) == tp); |
| bip = XFS_BUF_FSPRIVATE(bp, xfs_buf_log_item_t *); |
| ASSERT(bip != NULL); |
| bip->bli_recur++; |
| return bp; |
| } |
| |
| bp = libxfs_getsb(mp, flags); |
| #ifdef XACT_DEBUG |
| fprintf(stderr, "trans_get_sb buffer %p, transaction %p\n", bp, tp); |
| #endif |
| |
| xfs_buf_item_init(bp, mp); |
| bip = XFS_BUF_FSPRIVATE(bp, xfs_buf_log_item_t*); |
| bip->bli_recur = 0; |
| xfs_trans_add_item(tp, (xfs_log_item_t *)bip); |
| |
| /* initialize b_fsprivate2 so we can find it incore */ |
| XFS_BUF_SET_FSPRIVATE2(bp, tp); |
| return bp; |
| } |
| |
| int |
| libxfs_trans_read_buf_map( |
| xfs_mount_t *mp, |
| xfs_trans_t *tp, |
| struct xfs_buftarg *btp, |
| struct xfs_buf_map *map, |
| int nmaps, |
| uint flags, |
| xfs_buf_t **bpp, |
| const struct xfs_buf_ops *ops) |
| { |
| xfs_buf_t *bp; |
| xfs_buf_log_item_t *bip; |
| int error; |
| |
| *bpp = NULL; |
| |
| if (tp == NULL) { |
| bp = libxfs_readbuf_map(btp, map, nmaps, flags, ops); |
| if (!bp) { |
| return (flags & XBF_TRYLOCK) ? -EAGAIN : -ENOMEM; |
| } |
| if (bp->b_error) |
| goto out_relse; |
| goto done; |
| } |
| |
| bp = xfs_trans_buf_item_match(tp, btp, map, nmaps); |
| if (bp != NULL) { |
| ASSERT(XFS_BUF_FSPRIVATE2(bp, xfs_trans_t *) == tp); |
| ASSERT(XFS_BUF_FSPRIVATE(bp, void *) != NULL); |
| bip = XFS_BUF_FSPRIVATE(bp, xfs_buf_log_item_t*); |
| bip->bli_recur++; |
| goto done; |
| } |
| |
| bp = libxfs_readbuf_map(btp, map, nmaps, flags, ops); |
| if (!bp) { |
| return (flags & XBF_TRYLOCK) ? -EAGAIN : -ENOMEM; |
| } |
| if (bp->b_error) |
| goto out_relse; |
| |
| #ifdef XACT_DEBUG |
| fprintf(stderr, "trans_read_buf buffer %p, transaction %p\n", bp, tp); |
| #endif |
| |
| xfs_buf_item_init(bp, tp->t_mountp); |
| bip = XFS_BUF_FSPRIVATE(bp, xfs_buf_log_item_t *); |
| bip->bli_recur = 0; |
| xfs_trans_add_item(tp, (xfs_log_item_t *)bip); |
| |
| /* initialise b_fsprivate2 so we can find it incore */ |
| XFS_BUF_SET_FSPRIVATE2(bp, tp); |
| done: |
| *bpp = bp; |
| return 0; |
| out_relse: |
| error = bp->b_error; |
| xfs_buf_relse(bp); |
| return error; |
| } |
| |
| /* |
| * Record the indicated change to the given field for application |
| * to the file system's superblock when the transaction commits. |
| * For now, just store the change in the transaction structure. |
| * Mark the transaction structure to indicate that the superblock |
| * needs to be updated before committing. |
| * |
| * Originally derived from xfs_trans_mod_sb(). |
| */ |
| void |
| libxfs_trans_mod_sb( |
| xfs_trans_t *tp, |
| uint field, |
| long delta) |
| { |
| switch (field) { |
| case XFS_TRANS_SB_RES_FDBLOCKS: |
| return; |
| case XFS_TRANS_SB_FDBLOCKS: |
| tp->t_fdblocks_delta += delta; |
| break; |
| case XFS_TRANS_SB_ICOUNT: |
| ASSERT(delta > 0); |
| tp->t_icount_delta += delta; |
| break; |
| case XFS_TRANS_SB_IFREE: |
| tp->t_ifree_delta += delta; |
| break; |
| case XFS_TRANS_SB_FREXTENTS: |
| tp->t_frextents_delta += delta; |
| break; |
| default: |
| ASSERT(0); |
| return; |
| } |
| tp->t_flags |= (XFS_TRANS_SB_DIRTY | XFS_TRANS_DIRTY); |
| } |
| |
| |
| /* |
| * Transaction commital code follows (i.e. write to disk in libxfs) |
| */ |
| |
| static void |
| inode_item_done( |
| xfs_inode_log_item_t *iip) |
| { |
| xfs_dinode_t *dip; |
| xfs_inode_t *ip; |
| xfs_mount_t *mp; |
| xfs_buf_t *bp; |
| int error; |
| |
| ip = iip->ili_inode; |
| mp = iip->ili_item.li_mountp; |
| ASSERT(ip != NULL); |
| |
| if (!(iip->ili_fields & XFS_ILOG_ALL)) { |
| ip->i_transp = NULL; /* disassociate from transaction */ |
| iip->ili_flags = 0; /* reset all flags */ |
| return; |
| } |
| |
| /* |
| * Get the buffer containing the on-disk inode. |
| */ |
| error = xfs_imap_to_bp(mp, NULL, &ip->i_imap, &dip, &bp, 0, 0); |
| if (error) { |
| fprintf(stderr, _("%s: warning - imap_to_bp failed (%d)\n"), |
| progname, error); |
| return; |
| } |
| |
| XFS_BUF_SET_FSPRIVATE(bp, iip); |
| error = libxfs_iflush_int(ip, bp); |
| if (error) { |
| fprintf(stderr, _("%s: warning - iflush_int failed (%d)\n"), |
| progname, error); |
| return; |
| } |
| |
| ip->i_transp = NULL; /* disassociate from transaction */ |
| XFS_BUF_SET_FSPRIVATE(bp, NULL); /* remove log item */ |
| XFS_BUF_SET_FSPRIVATE2(bp, NULL); /* remove xact ptr */ |
| libxfs_writebuf(bp, 0); |
| #ifdef XACT_DEBUG |
| fprintf(stderr, "flushing dirty inode %llu, buffer %p\n", |
| ip->i_ino, bp); |
| #endif |
| } |
| |
| static void |
| buf_item_done( |
| xfs_buf_log_item_t *bip) |
| { |
| xfs_buf_t *bp; |
| int hold; |
| extern kmem_zone_t *xfs_buf_item_zone; |
| |
| bp = bip->bli_buf; |
| ASSERT(bp != NULL); |
| XFS_BUF_SET_FSPRIVATE(bp, NULL); /* remove log item */ |
| XFS_BUF_SET_FSPRIVATE2(bp, NULL); /* remove xact ptr */ |
| |
| hold = (bip->bli_flags & XFS_BLI_HOLD); |
| if (bip->bli_flags & XFS_BLI_DIRTY) { |
| #ifdef XACT_DEBUG |
| fprintf(stderr, "flushing/staling buffer %p (hold=%d)\n", |
| bp, hold); |
| #endif |
| libxfs_writebuf_int(bp, 0); |
| } |
| if (hold) |
| bip->bli_flags &= ~XFS_BLI_HOLD; |
| else |
| libxfs_putbuf(bp); |
| /* release the buf item */ |
| kmem_zone_free(xfs_buf_item_zone, bip); |
| } |
| |
| static void |
| trans_committed( |
| xfs_trans_t *tp) |
| { |
| struct xfs_log_item_desc *lidp, *next; |
| |
| list_for_each_entry_safe(lidp, next, &tp->t_items, lid_trans) { |
| struct xfs_log_item *lip = lidp->lid_item; |
| |
| xfs_trans_del_item(lip); |
| |
| if (lip->li_type == XFS_LI_BUF) |
| buf_item_done((xfs_buf_log_item_t *)lip); |
| else if (lip->li_type == XFS_LI_INODE) |
| inode_item_done((xfs_inode_log_item_t *)lip); |
| else { |
| fprintf(stderr, _("%s: unrecognised log item type\n"), |
| progname); |
| ASSERT(0); |
| } |
| } |
| } |
| |
| static void |
| buf_item_unlock( |
| xfs_buf_log_item_t *bip) |
| { |
| xfs_buf_t *bp = bip->bli_buf; |
| uint hold; |
| |
| /* Clear the buffer's association with this transaction. */ |
| XFS_BUF_SET_FSPRIVATE2(bip->bli_buf, NULL); |
| |
| hold = bip->bli_flags & XFS_BLI_HOLD; |
| bip->bli_flags &= ~XFS_BLI_HOLD; |
| if (!hold) |
| libxfs_putbuf(bp); |
| } |
| |
| static void |
| inode_item_unlock( |
| xfs_inode_log_item_t *iip) |
| { |
| xfs_inode_t *ip = iip->ili_inode; |
| |
| /* Clear the transaction pointer in the inode. */ |
| ip->i_transp = NULL; |
| |
| iip->ili_flags = 0; |
| } |
| |
| /* |
| * Unlock all of the items of a transaction and free all the descriptors |
| * of that transaction. |
| */ |
| static void |
| xfs_trans_free_items( |
| struct xfs_trans *tp) |
| { |
| struct xfs_log_item_desc *lidp, *next; |
| |
| list_for_each_entry_safe(lidp, next, &tp->t_items, lid_trans) { |
| struct xfs_log_item *lip = lidp->lid_item; |
| |
| xfs_trans_del_item(lip); |
| if (lip->li_type == XFS_LI_BUF) |
| buf_item_unlock((xfs_buf_log_item_t *)lip); |
| else if (lip->li_type == XFS_LI_INODE) |
| inode_item_unlock((xfs_inode_log_item_t *)lip); |
| else { |
| fprintf(stderr, _("%s: unrecognised log item type\n"), |
| progname); |
| ASSERT(0); |
| } |
| } |
| } |
| |
| /* |
| * Commit the changes represented by this transaction |
| */ |
| int |
| libxfs_trans_commit( |
| xfs_trans_t *tp) |
| { |
| xfs_sb_t *sbp; |
| |
| if (tp == NULL) |
| return 0; |
| |
| if (!(tp->t_flags & XFS_TRANS_DIRTY)) { |
| #ifdef XACT_DEBUG |
| fprintf(stderr, "committed clean transaction %p\n", tp); |
| #endif |
| xfs_trans_free_items(tp); |
| free(tp); |
| tp = NULL; |
| return 0; |
| } |
| |
| if (tp->t_flags & XFS_TRANS_SB_DIRTY) { |
| sbp = &(tp->t_mountp->m_sb); |
| if (tp->t_icount_delta) |
| sbp->sb_icount += tp->t_icount_delta; |
| if (tp->t_ifree_delta) |
| sbp->sb_ifree += tp->t_ifree_delta; |
| if (tp->t_fdblocks_delta) |
| sbp->sb_fdblocks += tp->t_fdblocks_delta; |
| if (tp->t_frextents_delta) |
| sbp->sb_frextents += tp->t_frextents_delta; |
| xfs_log_sb(tp); |
| } |
| |
| #ifdef XACT_DEBUG |
| fprintf(stderr, "committing dirty transaction %p\n", tp); |
| #endif |
| trans_committed(tp); |
| |
| /* That's it for the transaction structure. Free it. */ |
| free(tp); |
| tp = NULL; |
| return 0; |
| } |