diff options
Diffstat (limited to 'fs/xfs/xfs_trans_extfree.c')
| -rw-r--r-- | fs/xfs/xfs_trans_extfree.c | 156 |
1 files changed, 156 insertions, 0 deletions
diff --git a/fs/xfs/xfs_trans_extfree.c b/fs/xfs/xfs_trans_extfree.c new file mode 100644 index 000000000000..93259a15f983 --- /dev/null +++ b/fs/xfs/xfs_trans_extfree.c @@ -0,0 +1,156 @@ +/* + * Copyright (c) 2000 Silicon Graphics, Inc. All Rights Reserved. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of version 2 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. + * + * Further, this software is distributed without any warranty that it is + * free of the rightful claim of any third person regarding infringement + * or the like. Any license provided herein, whether implied or + * otherwise, applies only to this software file. Patent licenses, if + * any, provided herein do not apply to combinations of this program with + * other software, or any other product whatsoever. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write the Free Software Foundation, Inc., 59 + * Temple Place - Suite 330, Boston MA 02111-1307, USA. + * + * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy, + * Mountain View, CA 94043, or: + * + * http://www.sgi.com + * + * For further information regarding this notice, see: + * + * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/ + */ + +#include "xfs.h" +#include "xfs_macros.h" +#include "xfs_types.h" +#include "xfs_inum.h" +#include "xfs_log.h" +#include "xfs_trans.h" +#include "xfs_sb.h" +#include "xfs_dir.h" +#include "xfs_dmapi.h" +#include "xfs_mount.h" +#include "xfs_trans_priv.h" +#include "xfs_extfree_item.h" + +/* + * This routine is called to allocate an "extent free intention" + * log item that will hold nextents worth of extents. The + * caller must use all nextents extents, because we are not + * flexible about this at all. + */ +xfs_efi_log_item_t * +xfs_trans_get_efi(xfs_trans_t *tp, + uint nextents) +{ + xfs_efi_log_item_t *efip; + + ASSERT(tp != NULL); + ASSERT(nextents > 0); + + efip = xfs_efi_init(tp->t_mountp, nextents); + ASSERT(efip != NULL); + + /* + * Get a log_item_desc to point at the new item. + */ + (void) xfs_trans_add_item(tp, (xfs_log_item_t*)efip); + + return (efip); +} + +/* + * This routine is called to indicate that the described + * extent is to be logged as needing to be freed. It should + * be called once for each extent to be freed. + */ +void +xfs_trans_log_efi_extent(xfs_trans_t *tp, + xfs_efi_log_item_t *efip, + xfs_fsblock_t start_block, + xfs_extlen_t ext_len) +{ + xfs_log_item_desc_t *lidp; + uint next_extent; + xfs_extent_t *extp; + + lidp = xfs_trans_find_item(tp, (xfs_log_item_t*)efip); + ASSERT(lidp != NULL); + + tp->t_flags |= XFS_TRANS_DIRTY; + lidp->lid_flags |= XFS_LID_DIRTY; + + next_extent = efip->efi_next_extent; + ASSERT(next_extent < efip->efi_format.efi_nextents); + extp = &(efip->efi_format.efi_extents[next_extent]); + extp->ext_start = start_block; + extp->ext_len = ext_len; + efip->efi_next_extent++; +} + + +/* + * This routine is called to allocate an "extent free done" + * log item that will hold nextents worth of extents. The + * caller must use all nextents extents, because we are not + * flexible about this at all. + */ +xfs_efd_log_item_t * +xfs_trans_get_efd(xfs_trans_t *tp, + xfs_efi_log_item_t *efip, + uint nextents) +{ + xfs_efd_log_item_t *efdp; + + ASSERT(tp != NULL); + ASSERT(nextents > 0); + + efdp = xfs_efd_init(tp->t_mountp, efip, nextents); + ASSERT(efdp != NULL); + + /* + * Get a log_item_desc to point at the new item. + */ + (void) xfs_trans_add_item(tp, (xfs_log_item_t*)efdp); + + return (efdp); +} + +/* + * This routine is called to indicate that the described + * extent is to be logged as having been freed. It should + * be called once for each extent freed. + */ +void +xfs_trans_log_efd_extent(xfs_trans_t *tp, + xfs_efd_log_item_t *efdp, + xfs_fsblock_t start_block, + xfs_extlen_t ext_len) +{ + xfs_log_item_desc_t *lidp; + uint next_extent; + xfs_extent_t *extp; + + lidp = xfs_trans_find_item(tp, (xfs_log_item_t*)efdp); + ASSERT(lidp != NULL); + + tp->t_flags |= XFS_TRANS_DIRTY; + lidp->lid_flags |= XFS_LID_DIRTY; + + next_extent = efdp->efd_next_extent; + ASSERT(next_extent < efdp->efd_format.efd_nextents); + extp = &(efdp->efd_format.efd_extents[next_extent]); + extp->ext_start = start_block; + extp->ext_len = ext_len; + efdp->efd_next_extent++; +} |