mirror of https://gitee.com/openkylin/linux.git
117 lines
4.6 KiB
C
117 lines
4.6 KiB
C
/*
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* Copyright (c) 2000-2002,2005 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_RESV_H__
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#define __XFS_TRANS_RESV_H__
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struct xfs_mount;
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/*
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* structure for maintaining pre-calculated transaction reservations.
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*/
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struct xfs_trans_res {
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uint tr_logres; /* log space unit in bytes per log ticket */
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int tr_logcount; /* number of log operations per log ticket */
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int tr_logflags; /* log flags, currently only used for indicating
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* a reservation request is permanent or not */
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};
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struct xfs_trans_resv {
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struct xfs_trans_res tr_write; /* extent alloc trans */
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struct xfs_trans_res tr_itruncate; /* truncate trans */
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struct xfs_trans_res tr_rename; /* rename trans */
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struct xfs_trans_res tr_link; /* link trans */
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struct xfs_trans_res tr_remove; /* unlink trans */
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struct xfs_trans_res tr_symlink; /* symlink trans */
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struct xfs_trans_res tr_create; /* create trans */
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struct xfs_trans_res tr_create_tmpfile; /* create O_TMPFILE trans */
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struct xfs_trans_res tr_mkdir; /* mkdir trans */
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struct xfs_trans_res tr_ifree; /* inode free trans */
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struct xfs_trans_res tr_ichange; /* inode update trans */
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struct xfs_trans_res tr_growdata; /* fs data section grow trans */
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struct xfs_trans_res tr_addafork; /* add inode attr fork trans */
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struct xfs_trans_res tr_writeid; /* write setuid/setgid file */
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struct xfs_trans_res tr_attrinval; /* attr fork buffer
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* invalidation */
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struct xfs_trans_res tr_attrsetm; /* set/create an attribute at
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* mount time */
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struct xfs_trans_res tr_attrsetrt; /* set/create an attribute at
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* runtime */
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struct xfs_trans_res tr_attrrm; /* remove an attribute */
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struct xfs_trans_res tr_clearagi; /* clear agi unlinked bucket */
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struct xfs_trans_res tr_growrtalloc; /* grow realtime allocations */
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struct xfs_trans_res tr_growrtzero; /* grow realtime zeroing */
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struct xfs_trans_res tr_growrtfree; /* grow realtime freeing */
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struct xfs_trans_res tr_qm_setqlim; /* adjust quota limits */
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struct xfs_trans_res tr_qm_dqalloc; /* allocate quota on disk */
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struct xfs_trans_res tr_qm_quotaoff; /* turn quota off */
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struct xfs_trans_res tr_qm_equotaoff;/* end of turn quota off */
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struct xfs_trans_res tr_sb; /* modify superblock */
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struct xfs_trans_res tr_fsyncts; /* update timestamps on fsync */
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};
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/* shorthand way of accessing reservation structure */
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#define M_RES(mp) (&(mp)->m_resv)
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/*
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* Per-extent log reservation for the allocation btree changes
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* involved in freeing or allocating an extent.
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* 2 trees * (2 blocks/level * max depth - 1) * block size
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*/
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#define XFS_ALLOCFREE_LOG_RES(mp,nx) \
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((nx) * (2 * XFS_FSB_TO_B((mp), 2 * (mp)->m_ag_maxlevels - 1)))
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#define XFS_ALLOCFREE_LOG_COUNT(mp,nx) \
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((nx) * (2 * (2 * (mp)->m_ag_maxlevels - 1)))
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/*
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* Per-directory log reservation for any directory change.
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* dir blocks: (1 btree block per level + data block + free block) * dblock size
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* bmap btree: (levels + 2) * max depth * block size
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* v2 directory blocks can be fragmented below the dirblksize down to the fsb
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* size, so account for that in the DAENTER macros.
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*/
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#define XFS_DIROP_LOG_RES(mp) \
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(XFS_FSB_TO_B(mp, XFS_DAENTER_BLOCKS(mp, XFS_DATA_FORK)) + \
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(XFS_FSB_TO_B(mp, XFS_DAENTER_BMAPS(mp, XFS_DATA_FORK) + 1)))
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#define XFS_DIROP_LOG_COUNT(mp) \
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(XFS_DAENTER_BLOCKS(mp, XFS_DATA_FORK) + \
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XFS_DAENTER_BMAPS(mp, XFS_DATA_FORK) + 1)
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/*
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* Various log count values.
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*/
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#define XFS_DEFAULT_LOG_COUNT 1
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#define XFS_DEFAULT_PERM_LOG_COUNT 2
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#define XFS_ITRUNCATE_LOG_COUNT 2
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#define XFS_INACTIVE_LOG_COUNT 2
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#define XFS_CREATE_LOG_COUNT 2
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#define XFS_CREATE_TMPFILE_LOG_COUNT 2
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#define XFS_MKDIR_LOG_COUNT 3
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#define XFS_SYMLINK_LOG_COUNT 3
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#define XFS_REMOVE_LOG_COUNT 2
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#define XFS_LINK_LOG_COUNT 2
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#define XFS_RENAME_LOG_COUNT 2
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#define XFS_WRITE_LOG_COUNT 2
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#define XFS_ADDAFORK_LOG_COUNT 2
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#define XFS_ATTRINVAL_LOG_COUNT 1
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#define XFS_ATTRSET_LOG_COUNT 3
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#define XFS_ATTRRM_LOG_COUNT 3
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void xfs_trans_resv_calc(struct xfs_mount *mp, struct xfs_trans_resv *resp);
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#endif /* __XFS_TRANS_RESV_H__ */
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