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https://mirrors.bfsu.edu.cn/git/linux.git
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1da177e4c3
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
157 lines
4.2 KiB
C
157 lines
4.2 KiB
C
/*
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* Copyright (c) 2000 Silicon Graphics, Inc. All Rights Reserved.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of version 2 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, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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*
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* Further, this software is distributed without any warranty that it is
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* free of the rightful claim of any third person regarding infringement
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* or the like. Any license provided herein, whether implied or
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* otherwise, applies only to this software file. Patent licenses, if
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* any, provided herein do not apply to combinations of this program with
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* other software, or any other product whatsoever.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write the Free Software Foundation, Inc., 59
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* Temple Place - Suite 330, Boston MA 02111-1307, USA.
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*
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* Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
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* Mountain View, CA 94043, or:
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*
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* http://www.sgi.com
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*
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* For further information regarding this notice, see:
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*
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* http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
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*/
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#include "xfs.h"
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#include "xfs_macros.h"
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#include "xfs_types.h"
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#include "xfs_inum.h"
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#include "xfs_log.h"
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#include "xfs_trans.h"
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#include "xfs_sb.h"
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#include "xfs_dir.h"
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#include "xfs_dmapi.h"
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#include "xfs_mount.h"
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#include "xfs_trans_priv.h"
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#include "xfs_extfree_item.h"
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/*
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* This routine is called to allocate an "extent free intention"
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* log item that will hold nextents worth of extents. The
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* caller must use all nextents extents, because we are not
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* flexible about this at all.
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*/
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xfs_efi_log_item_t *
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xfs_trans_get_efi(xfs_trans_t *tp,
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uint nextents)
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{
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xfs_efi_log_item_t *efip;
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ASSERT(tp != NULL);
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ASSERT(nextents > 0);
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efip = xfs_efi_init(tp->t_mountp, nextents);
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ASSERT(efip != NULL);
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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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(void) xfs_trans_add_item(tp, (xfs_log_item_t*)efip);
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return (efip);
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}
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/*
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* This routine is called to indicate that the described
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* extent is to be logged as needing to be freed. It should
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* be called once for each extent to be freed.
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*/
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void
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xfs_trans_log_efi_extent(xfs_trans_t *tp,
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xfs_efi_log_item_t *efip,
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xfs_fsblock_t start_block,
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xfs_extlen_t ext_len)
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{
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xfs_log_item_desc_t *lidp;
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uint next_extent;
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xfs_extent_t *extp;
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lidp = xfs_trans_find_item(tp, (xfs_log_item_t*)efip);
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ASSERT(lidp != NULL);
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tp->t_flags |= XFS_TRANS_DIRTY;
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lidp->lid_flags |= XFS_LID_DIRTY;
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next_extent = efip->efi_next_extent;
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ASSERT(next_extent < efip->efi_format.efi_nextents);
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extp = &(efip->efi_format.efi_extents[next_extent]);
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extp->ext_start = start_block;
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extp->ext_len = ext_len;
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efip->efi_next_extent++;
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}
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/*
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* This routine is called to allocate an "extent free done"
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* log item that will hold nextents worth of extents. The
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* caller must use all nextents extents, because we are not
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* flexible about this at all.
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*/
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xfs_efd_log_item_t *
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xfs_trans_get_efd(xfs_trans_t *tp,
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xfs_efi_log_item_t *efip,
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uint nextents)
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{
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xfs_efd_log_item_t *efdp;
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ASSERT(tp != NULL);
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ASSERT(nextents > 0);
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efdp = xfs_efd_init(tp->t_mountp, efip, nextents);
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ASSERT(efdp != NULL);
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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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(void) xfs_trans_add_item(tp, (xfs_log_item_t*)efdp);
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return (efdp);
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}
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/*
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* This routine is called to indicate that the described
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* extent is to be logged as having been freed. It should
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* be called once for each extent freed.
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*/
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void
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xfs_trans_log_efd_extent(xfs_trans_t *tp,
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xfs_efd_log_item_t *efdp,
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xfs_fsblock_t start_block,
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xfs_extlen_t ext_len)
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{
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xfs_log_item_desc_t *lidp;
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uint next_extent;
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xfs_extent_t *extp;
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lidp = xfs_trans_find_item(tp, (xfs_log_item_t*)efdp);
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ASSERT(lidp != NULL);
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tp->t_flags |= XFS_TRANS_DIRTY;
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lidp->lid_flags |= XFS_LID_DIRTY;
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next_extent = efdp->efd_next_extent;
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ASSERT(next_extent < efdp->efd_format.efd_nextents);
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extp = &(efdp->efd_format.efd_extents[next_extent]);
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extp->ext_start = start_block;
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extp->ext_len = ext_len;
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efdp->efd_next_extent++;
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}
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