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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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1f08af52e7
Implement swapext for filesystems that have reverse mapping. Back in the reflink patches, we augmented the bmap code with a 'REMAP' flag that updates only the bmbt and doesn't touch the allocator and implemented log redo items for those two operations. Now we can rewrite extent swapping as a (looong) series of remap operations. This is far less efficient than the fork swapping method implemented in the past, so we only switch this on for rmap. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Christoph Hellwig <hch@lst.de>
102 lines
4.0 KiB
C
102 lines
4.0 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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#ifndef __XFS_TRANS_SPACE_H__
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#define __XFS_TRANS_SPACE_H__
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/*
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* Components of space reservations.
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*/
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#define XFS_MAX_CONTIG_RMAPS_PER_BLOCK(mp) \
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(((mp)->m_rmap_mxr[0]) - ((mp)->m_rmap_mnr[0]))
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#define XFS_MAX_CONTIG_EXTENTS_PER_BLOCK(mp) \
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(((mp)->m_alloc_mxr[0]) - ((mp)->m_alloc_mnr[0]))
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#define XFS_EXTENTADD_SPACE_RES(mp,w) (XFS_BM_MAXLEVELS(mp,w) - 1)
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#define XFS_NEXTENTADD_SPACE_RES(mp,b,w)\
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(((b + XFS_MAX_CONTIG_EXTENTS_PER_BLOCK(mp) - 1) / \
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XFS_MAX_CONTIG_EXTENTS_PER_BLOCK(mp)) * \
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XFS_EXTENTADD_SPACE_RES(mp,w))
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#define XFS_SWAP_RMAP_SPACE_RES(mp,b,w)\
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(((b + XFS_MAX_CONTIG_EXTENTS_PER_BLOCK(mp) - 1) / \
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XFS_MAX_CONTIG_EXTENTS_PER_BLOCK(mp)) * \
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XFS_EXTENTADD_SPACE_RES(mp,w) + \
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((b + XFS_MAX_CONTIG_RMAPS_PER_BLOCK(mp) - 1) / \
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XFS_MAX_CONTIG_RMAPS_PER_BLOCK(mp)) * \
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(mp)->m_rmap_maxlevels)
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#define XFS_DAENTER_1B(mp,w) \
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((w) == XFS_DATA_FORK ? (mp)->m_dir_geo->fsbcount : 1)
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#define XFS_DAENTER_DBS(mp,w) \
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(XFS_DA_NODE_MAXDEPTH + (((w) == XFS_DATA_FORK) ? 2 : 0))
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#define XFS_DAENTER_BLOCKS(mp,w) \
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(XFS_DAENTER_1B(mp,w) * XFS_DAENTER_DBS(mp,w))
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#define XFS_DAENTER_BMAP1B(mp,w) \
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XFS_NEXTENTADD_SPACE_RES(mp, XFS_DAENTER_1B(mp, w), w)
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#define XFS_DAENTER_BMAPS(mp,w) \
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(XFS_DAENTER_DBS(mp,w) * XFS_DAENTER_BMAP1B(mp,w))
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#define XFS_DAENTER_SPACE_RES(mp,w) \
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(XFS_DAENTER_BLOCKS(mp,w) + XFS_DAENTER_BMAPS(mp,w))
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#define XFS_DAREMOVE_SPACE_RES(mp,w) XFS_DAENTER_BMAPS(mp,w)
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#define XFS_DIRENTER_MAX_SPLIT(mp,nl) 1
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#define XFS_DIRENTER_SPACE_RES(mp,nl) \
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(XFS_DAENTER_SPACE_RES(mp, XFS_DATA_FORK) * \
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XFS_DIRENTER_MAX_SPLIT(mp,nl))
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#define XFS_DIRREMOVE_SPACE_RES(mp) \
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XFS_DAREMOVE_SPACE_RES(mp, XFS_DATA_FORK)
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#define XFS_IALLOC_SPACE_RES(mp) \
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((mp)->m_ialloc_blks + \
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(xfs_sb_version_hasfinobt(&mp->m_sb) ? 2 : 1 * \
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((mp)->m_in_maxlevels - 1)))
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/*
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* Space reservation values for various transactions.
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*/
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#define XFS_ADDAFORK_SPACE_RES(mp) \
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((mp)->m_dir_geo->fsbcount + XFS_DAENTER_BMAP1B(mp, XFS_DATA_FORK))
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#define XFS_ATTRRM_SPACE_RES(mp) \
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XFS_DAREMOVE_SPACE_RES(mp, XFS_ATTR_FORK)
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/* This macro is not used - see inline code in xfs_attr_set */
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#define XFS_ATTRSET_SPACE_RES(mp, v) \
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(XFS_DAENTER_SPACE_RES(mp, XFS_ATTR_FORK) + XFS_B_TO_FSB(mp, v))
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#define XFS_CREATE_SPACE_RES(mp,nl) \
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(XFS_IALLOC_SPACE_RES(mp) + XFS_DIRENTER_SPACE_RES(mp,nl))
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#define XFS_DIOSTRAT_SPACE_RES(mp, v) \
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(XFS_EXTENTADD_SPACE_RES(mp, XFS_DATA_FORK) + (v))
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#define XFS_GROWFS_SPACE_RES(mp) \
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(2 * (mp)->m_ag_maxlevels)
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#define XFS_GROWFSRT_SPACE_RES(mp,b) \
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((b) + XFS_EXTENTADD_SPACE_RES(mp, XFS_DATA_FORK))
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#define XFS_LINK_SPACE_RES(mp,nl) \
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XFS_DIRENTER_SPACE_RES(mp,nl)
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#define XFS_MKDIR_SPACE_RES(mp,nl) \
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(XFS_IALLOC_SPACE_RES(mp) + XFS_DIRENTER_SPACE_RES(mp,nl))
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#define XFS_QM_DQALLOC_SPACE_RES(mp) \
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(XFS_EXTENTADD_SPACE_RES(mp, XFS_DATA_FORK) + \
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XFS_DQUOT_CLUSTER_SIZE_FSB)
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#define XFS_QM_QINOCREATE_SPACE_RES(mp) \
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XFS_IALLOC_SPACE_RES(mp)
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#define XFS_REMOVE_SPACE_RES(mp) \
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XFS_DIRREMOVE_SPACE_RES(mp)
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#define XFS_RENAME_SPACE_RES(mp,nl) \
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(XFS_DIRREMOVE_SPACE_RES(mp) + XFS_DIRENTER_SPACE_RES(mp,nl))
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#define XFS_SYMLINK_SPACE_RES(mp,nl,b) \
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(XFS_IALLOC_SPACE_RES(mp) + XFS_DIRENTER_SPACE_RES(mp,nl) + (b))
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#define XFS_IFREE_SPACE_RES(mp) \
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(xfs_sb_version_hasfinobt(&mp->m_sb) ? (mp)->m_in_maxlevels : 0)
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#endif /* __XFS_TRANS_SPACE_H__ */
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