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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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xfs: split out transaction reservation code
The transaction reservation size calculations is used by both kernel and userspace, but most of the transaction code in xfs_trans.c is kernel specific. Split all the transaction reservation code out into it's own files to make sharing with userspace simpler. This just leaves kernel-only definitions in xfs_trans.h, so it doesn't need to be shared with userspace anymore, either. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Brian Foster <bfoster@redhat.com> Reviewed-by: Mark Tinguely <tinguely@sgi.com> Signed-off-by: Ben Myers <bpm@sgi.com>
This commit is contained in:
Dave Chinner
Ben Myers
parent
d386b32b55
commit
7fd36c4418
@ -47,6 +47,7 @@ xfs-y += xfs_aops.o \
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xfs_mru_cache.o \
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xfs_rename.o \
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xfs_super.o \
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xfs_trans.o \
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xfs_utils.o \
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xfs_vnodeops.o \
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xfs_xattr.o \
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@ -76,7 +77,7 @@ xfs-y += xfs_alloc.o \
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xfs_log_recover.o \
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xfs_mount.o \
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xfs_symlink.o \
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xfs_trans.o
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xfs_trans_resv.o
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# low-level transaction/log code
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xfs-y += xfs_log.o \
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@ -17,6 +17,7 @@
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*/
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#include "xfs.h"
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#include "xfs_log_format.h"
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#include "xfs_trans_resv.h"
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#include "xfs_acl.h"
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#include "xfs_attr.h"
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#include "xfs_bmap_btree.h"
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@ -35,6 +35,7 @@
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#include <linux/freezer.h>
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#include "xfs_sb.h"
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#include "xfs_trans_resv.h"
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#include "xfs_log.h"
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#include "xfs_ag.h"
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#include "xfs_mount.h"
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@ -17,12 +17,12 @@
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*/
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#include "xfs.h"
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#include "xfs_format.h"
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#include "xfs_sb.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_ag.h"
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#include "xfs_mount.h"
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#include "xfs_quota.h"
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#include "xfs_trans.h"
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#include "xfs_alloc_btree.h"
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#include "xfs_bmap_btree.h"
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#include "xfs_ialloc_btree.h"
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@ -18,45 +18,7 @@
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#ifndef __XFS_MOUNT_H__
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#define __XFS_MOUNT_H__
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typedef struct xfs_trans_reservations {
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uint tr_write; /* extent alloc trans */
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uint tr_itruncate; /* truncate trans */
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uint tr_rename; /* rename trans */
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uint tr_link; /* link trans */
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uint tr_remove; /* unlink trans */
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uint tr_symlink; /* symlink trans */
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uint tr_create; /* create trans */
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uint tr_mkdir; /* mkdir trans */
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uint tr_ifree; /* inode free trans */
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uint tr_ichange; /* inode update trans */
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uint tr_growdata; /* fs data section grow trans */
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uint tr_swrite; /* sync write inode trans */
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uint tr_addafork; /* cvt inode to attributed trans */
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uint tr_writeid; /* write setuid/setgid file */
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uint tr_attrinval; /* attr fork buffer invalidation */
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uint tr_attrsetm; /* set/create an attribute at mount time */
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uint tr_attrsetrt; /* set/create an attribute at runtime */
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uint tr_attrrm; /* remove an attribute */
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uint tr_clearagi; /* clear bad agi unlinked ino bucket */
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uint tr_growrtalloc; /* grow realtime allocations */
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uint tr_growrtzero; /* grow realtime zeroing */
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uint tr_growrtfree; /* grow realtime freeing */
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uint tr_qm_sbchange; /* change quota flags */
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uint tr_qm_setqlim; /* adjust quota limits */
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uint tr_qm_dqalloc; /* allocate quota on disk */
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uint tr_qm_quotaoff; /* turn quota off */
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uint tr_qm_equotaoff;/* end of turn quota off */
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uint tr_sb; /* modify superblock */
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} xfs_trans_reservations_t;
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#ifndef __KERNEL__
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#define xfs_daddr_to_agno(mp,d) \
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((xfs_agnumber_t)(XFS_BB_TO_FSBT(mp, d) / (mp)->m_sb.sb_agblocks))
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#define xfs_daddr_to_agbno(mp,d) \
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((xfs_agblock_t)(XFS_BB_TO_FSBT(mp, d) % (mp)->m_sb.sb_agblocks))
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#else /* __KERNEL__ */
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#ifdef __KERNEL__
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struct xlog;
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struct xfs_inode;
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@ -174,7 +136,7 @@ typedef struct xfs_mount {
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int m_ialloc_blks; /* blocks in inode allocation */
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int m_inoalign_mask;/* mask sb_inoalignmt if used */
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uint m_qflags; /* quota status flags */
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xfs_trans_reservations_t m_reservations;/* precomputed res values */
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struct xfs_trans_resv m_reservations; /* precomputed res values */
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__uint64_t m_maxicount; /* maximum inode count */
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__uint64_t m_resblks; /* total reserved blocks */
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__uint64_t m_resblks_avail;/* available reserved blocks */
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@ -17,8 +17,9 @@
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*/
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#include "xfs.h"
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#include "xfs_format.h"
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#include "xfs_sb.h"
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#include "xfs_trans_resv.h"
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#include "xfs_log.h"
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#include "xfs_sb.h"
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#include "xfs_ag.h"
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#include "xfs_mount.h"
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#include "xfs_quota.h"
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@ -48,629 +48,6 @@
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kmem_zone_t *xfs_trans_zone;
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kmem_zone_t *xfs_log_item_desc_zone;
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/*
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* A buffer has a format structure overhead in the log in addition
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* to the data, so we need to take this into account when reserving
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* space in a transaction for a buffer. Round the space required up
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* to a multiple of 128 bytes so that we don't change the historical
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* reservation that has been used for this overhead.
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*/
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STATIC uint
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xfs_buf_log_overhead(void)
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{
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return round_up(sizeof(struct xlog_op_header) +
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sizeof(struct xfs_buf_log_format), 128);
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}
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/*
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* Calculate out transaction log reservation per item in bytes.
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*
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* The nbufs argument is used to indicate the number of items that
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* will be changed in a transaction. size is used to tell how many
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* bytes should be reserved per item.
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*/
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STATIC uint
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xfs_calc_buf_res(
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uint nbufs,
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uint size)
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{
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return nbufs * (size + xfs_buf_log_overhead());
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}
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/*
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* Various log reservation values.
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*
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* These are based on the size of the file system block because that is what
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* most transactions manipulate. Each adds in an additional 128 bytes per
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* item logged to try to account for the overhead of the transaction mechanism.
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*
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* Note: Most of the reservations underestimate the number of allocation
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* groups into which they could free extents in the xfs_bmap_finish() call.
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* This is because the number in the worst case is quite high and quite
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* unusual. In order to fix this we need to change xfs_bmap_finish() to free
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* extents in only a single AG at a time. This will require changes to the
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* EFI code as well, however, so that the EFI for the extents not freed is
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* logged again in each transaction. See SGI PV #261917.
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*
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* Reservation functions here avoid a huge stack in xfs_trans_init due to
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* register overflow from temporaries in the calculations.
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*/
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/*
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* In a write transaction we can allocate a maximum of 2
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* extents. This gives:
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* the inode getting the new extents: inode size
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* the inode's bmap btree: max depth * block size
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* the agfs of the ags from which the extents are allocated: 2 * sector
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* the superblock free block counter: sector size
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* the allocation btrees: 2 exts * 2 trees * (2 * max depth - 1) * block size
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* And the bmap_finish transaction can free bmap blocks in a join:
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* the agfs of the ags containing the blocks: 2 * sector size
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* the agfls of the ags containing the blocks: 2 * sector size
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* the super block free block counter: sector size
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* the allocation btrees: 2 exts * 2 trees * (2 * max depth - 1) * block size
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*/
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STATIC uint
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xfs_calc_write_reservation(
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struct xfs_mount *mp)
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{
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return XFS_DQUOT_LOGRES(mp) +
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MAX((xfs_calc_buf_res(1, mp->m_sb.sb_inodesize) +
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xfs_calc_buf_res(XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK),
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XFS_FSB_TO_B(mp, 1)) +
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xfs_calc_buf_res(3, mp->m_sb.sb_sectsize) +
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xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 2),
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XFS_FSB_TO_B(mp, 1))),
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(xfs_calc_buf_res(5, mp->m_sb.sb_sectsize) +
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xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 2),
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XFS_FSB_TO_B(mp, 1))));
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}
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/*
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* In truncating a file we free up to two extents at once. We can modify:
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* the inode being truncated: inode size
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* the inode's bmap btree: (max depth + 1) * block size
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* And the bmap_finish transaction can free the blocks and bmap blocks:
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* the agf for each of the ags: 4 * sector size
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* the agfl for each of the ags: 4 * sector size
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* the super block to reflect the freed blocks: sector size
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* worst case split in allocation btrees per extent assuming 4 extents:
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* 4 exts * 2 trees * (2 * max depth - 1) * block size
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* the inode btree: max depth * blocksize
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* the allocation btrees: 2 trees * (max depth - 1) * block size
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*/
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STATIC uint
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xfs_calc_itruncate_reservation(
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struct xfs_mount *mp)
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{
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return XFS_DQUOT_LOGRES(mp) +
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MAX((xfs_calc_buf_res(1, mp->m_sb.sb_inodesize) +
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xfs_calc_buf_res(XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK) + 1,
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XFS_FSB_TO_B(mp, 1))),
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(xfs_calc_buf_res(9, mp->m_sb.sb_sectsize) +
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xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 4),
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XFS_FSB_TO_B(mp, 1)) +
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xfs_calc_buf_res(5, 0) +
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xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 1),
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XFS_FSB_TO_B(mp, 1)) +
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xfs_calc_buf_res(2 + XFS_IALLOC_BLOCKS(mp) +
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mp->m_in_maxlevels, 0)));
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}
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/*
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* In renaming a files we can modify:
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* the four inodes involved: 4 * inode size
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* the two directory btrees: 2 * (max depth + v2) * dir block size
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* the two directory bmap btrees: 2 * max depth * block size
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* And the bmap_finish transaction can free dir and bmap blocks (two sets
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* of bmap blocks) giving:
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* the agf for the ags in which the blocks live: 3 * sector size
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* the agfl for the ags in which the blocks live: 3 * sector size
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* the superblock for the free block count: sector size
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* the allocation btrees: 3 exts * 2 trees * (2 * max depth - 1) * block size
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*/
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STATIC uint
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xfs_calc_rename_reservation(
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struct xfs_mount *mp)
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{
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return XFS_DQUOT_LOGRES(mp) +
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MAX((xfs_calc_buf_res(4, mp->m_sb.sb_inodesize) +
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xfs_calc_buf_res(2 * XFS_DIROP_LOG_COUNT(mp),
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XFS_FSB_TO_B(mp, 1))),
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(xfs_calc_buf_res(7, mp->m_sb.sb_sectsize) +
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xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 3),
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XFS_FSB_TO_B(mp, 1))));
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}
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/*
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* For creating a link to an inode:
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* the parent directory inode: inode size
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* the linked inode: inode size
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* the directory btree could split: (max depth + v2) * dir block size
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* the directory bmap btree could join or split: (max depth + v2) * blocksize
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* And the bmap_finish transaction can free some bmap blocks giving:
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* the agf for the ag in which the blocks live: sector size
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* the agfl for the ag in which the blocks live: sector size
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* the superblock for the free block count: sector size
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* the allocation btrees: 2 trees * (2 * max depth - 1) * block size
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*/
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STATIC uint
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xfs_calc_link_reservation(
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struct xfs_mount *mp)
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{
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return XFS_DQUOT_LOGRES(mp) +
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MAX((xfs_calc_buf_res(2, mp->m_sb.sb_inodesize) +
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xfs_calc_buf_res(XFS_DIROP_LOG_COUNT(mp),
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XFS_FSB_TO_B(mp, 1))),
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(xfs_calc_buf_res(3, mp->m_sb.sb_sectsize) +
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xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 1),
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XFS_FSB_TO_B(mp, 1))));
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}
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/*
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* For removing a directory entry we can modify:
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* the parent directory inode: inode size
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* the removed inode: inode size
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* the directory btree could join: (max depth + v2) * dir block size
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* the directory bmap btree could join or split: (max depth + v2) * blocksize
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* And the bmap_finish transaction can free the dir and bmap blocks giving:
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* the agf for the ag in which the blocks live: 2 * sector size
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* the agfl for the ag in which the blocks live: 2 * sector size
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* the superblock for the free block count: sector size
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* the allocation btrees: 2 exts * 2 trees * (2 * max depth - 1) * block size
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*/
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STATIC uint
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xfs_calc_remove_reservation(
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struct xfs_mount *mp)
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{
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return XFS_DQUOT_LOGRES(mp) +
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MAX((xfs_calc_buf_res(2, mp->m_sb.sb_inodesize) +
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xfs_calc_buf_res(XFS_DIROP_LOG_COUNT(mp),
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XFS_FSB_TO_B(mp, 1))),
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(xfs_calc_buf_res(5, mp->m_sb.sb_sectsize) +
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xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 2),
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XFS_FSB_TO_B(mp, 1))));
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}
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/*
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* For create, break it in to the two cases that the transaction
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* covers. We start with the modify case - allocation done by modification
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* of the state of existing inodes - and the allocation case.
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*/
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/*
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* For create we can modify:
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* the parent directory inode: inode size
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* the new inode: inode size
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* the inode btree entry: block size
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* the superblock for the nlink flag: sector size
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* the directory btree: (max depth + v2) * dir block size
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* the directory inode's bmap btree: (max depth + v2) * block size
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*/
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STATIC uint
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xfs_calc_create_resv_modify(
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struct xfs_mount *mp)
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{
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return xfs_calc_buf_res(2, mp->m_sb.sb_inodesize) +
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xfs_calc_buf_res(1, mp->m_sb.sb_sectsize) +
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(uint)XFS_FSB_TO_B(mp, 1) +
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xfs_calc_buf_res(XFS_DIROP_LOG_COUNT(mp), XFS_FSB_TO_B(mp, 1));
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}
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/*
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* For create we can allocate some inodes giving:
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* the agi and agf of the ag getting the new inodes: 2 * sectorsize
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* the superblock for the nlink flag: sector size
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* the inode blocks allocated: XFS_IALLOC_BLOCKS * blocksize
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* the inode btree: max depth * blocksize
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* the allocation btrees: 2 trees * (max depth - 1) * block size
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*/
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STATIC uint
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xfs_calc_create_resv_alloc(
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struct xfs_mount *mp)
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{
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return xfs_calc_buf_res(2, mp->m_sb.sb_sectsize) +
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mp->m_sb.sb_sectsize +
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xfs_calc_buf_res(XFS_IALLOC_BLOCKS(mp), XFS_FSB_TO_B(mp, 1)) +
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xfs_calc_buf_res(mp->m_in_maxlevels, XFS_FSB_TO_B(mp, 1)) +
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xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 1),
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XFS_FSB_TO_B(mp, 1));
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}
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STATIC uint
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__xfs_calc_create_reservation(
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struct xfs_mount *mp)
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{
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return XFS_DQUOT_LOGRES(mp) +
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MAX(xfs_calc_create_resv_alloc(mp),
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xfs_calc_create_resv_modify(mp));
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}
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/*
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* For icreate we can allocate some inodes giving:
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* the agi and agf of the ag getting the new inodes: 2 * sectorsize
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* the superblock for the nlink flag: sector size
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* the inode btree: max depth * blocksize
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* the allocation btrees: 2 trees * (max depth - 1) * block size
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*/
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STATIC uint
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xfs_calc_icreate_resv_alloc(
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struct xfs_mount *mp)
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{
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return xfs_calc_buf_res(2, mp->m_sb.sb_sectsize) +
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mp->m_sb.sb_sectsize +
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xfs_calc_buf_res(mp->m_in_maxlevels, XFS_FSB_TO_B(mp, 1)) +
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xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 1),
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XFS_FSB_TO_B(mp, 1));
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}
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STATIC uint
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xfs_calc_icreate_reservation(xfs_mount_t *mp)
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{
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return XFS_DQUOT_LOGRES(mp) +
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MAX(xfs_calc_icreate_resv_alloc(mp),
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xfs_calc_create_resv_modify(mp));
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}
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STATIC uint
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xfs_calc_create_reservation(
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struct xfs_mount *mp)
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{
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if (xfs_sb_version_hascrc(&mp->m_sb))
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return xfs_calc_icreate_reservation(mp);
|
||||
return __xfs_calc_create_reservation(mp);
|
||||
|
||||
}
|
||||
|
||||
/*
|
||||
* Making a new directory is the same as creating a new file.
|
||||
*/
|
||||
STATIC uint
|
||||
xfs_calc_mkdir_reservation(
|
||||
struct xfs_mount *mp)
|
||||
{
|
||||
return xfs_calc_create_reservation(mp);
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
* Making a new symplink is the same as creating a new file, but
|
||||
* with the added blocks for remote symlink data which can be up to 1kB in
|
||||
* length (MAXPATHLEN).
|
||||
*/
|
||||
STATIC uint
|
||||
xfs_calc_symlink_reservation(
|
||||
struct xfs_mount *mp)
|
||||
{
|
||||
return xfs_calc_create_reservation(mp) +
|
||||
xfs_calc_buf_res(1, MAXPATHLEN);
|
||||
}
|
||||
|
||||
/*
|
||||
* In freeing an inode we can modify:
|
||||
* the inode being freed: inode size
|
||||
* the super block free inode counter: sector size
|
||||
* the agi hash list and counters: sector size
|
||||
* the inode btree entry: block size
|
||||
* the on disk inode before ours in the agi hash list: inode cluster size
|
||||
* the inode btree: max depth * blocksize
|
||||
* the allocation btrees: 2 trees * (max depth - 1) * block size
|
||||
*/
|
||||
STATIC uint
|
||||
xfs_calc_ifree_reservation(
|
||||
struct xfs_mount *mp)
|
||||
{
|
||||
return XFS_DQUOT_LOGRES(mp) +
|
||||
xfs_calc_buf_res(1, mp->m_sb.sb_inodesize) +
|
||||
xfs_calc_buf_res(2, mp->m_sb.sb_sectsize) +
|
||||
xfs_calc_buf_res(1, XFS_FSB_TO_B(mp, 1)) +
|
||||
MAX((__uint16_t)XFS_FSB_TO_B(mp, 1),
|
||||
XFS_INODE_CLUSTER_SIZE(mp)) +
|
||||
xfs_calc_buf_res(1, 0) +
|
||||
xfs_calc_buf_res(2 + XFS_IALLOC_BLOCKS(mp) +
|
||||
mp->m_in_maxlevels, 0) +
|
||||
xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 1),
|
||||
XFS_FSB_TO_B(mp, 1));
|
||||
}
|
||||
|
||||
/*
|
||||
* When only changing the inode we log the inode and possibly the superblock
|
||||
* We also add a bit of slop for the transaction stuff.
|
||||
*/
|
||||
STATIC uint
|
||||
xfs_calc_ichange_reservation(
|
||||
struct xfs_mount *mp)
|
||||
{
|
||||
return XFS_DQUOT_LOGRES(mp) +
|
||||
mp->m_sb.sb_inodesize +
|
||||
mp->m_sb.sb_sectsize +
|
||||
512;
|
||||
|
||||
}
|
||||
|
||||
/*
|
||||
* Growing the data section of the filesystem.
|
||||
* superblock
|
||||
* agi and agf
|
||||
* allocation btrees
|
||||
*/
|
||||
STATIC uint
|
||||
xfs_calc_growdata_reservation(
|
||||
struct xfs_mount *mp)
|
||||
{
|
||||
return xfs_calc_buf_res(3, mp->m_sb.sb_sectsize) +
|
||||
xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 1),
|
||||
XFS_FSB_TO_B(mp, 1));
|
||||
}
|
||||
|
||||
/*
|
||||
* Growing the rt section of the filesystem.
|
||||
* In the first set of transactions (ALLOC) we allocate space to the
|
||||
* bitmap or summary files.
|
||||
* superblock: sector size
|
||||
* agf of the ag from which the extent is allocated: sector size
|
||||
* bmap btree for bitmap/summary inode: max depth * blocksize
|
||||
* bitmap/summary inode: inode size
|
||||
* allocation btrees for 1 block alloc: 2 * (2 * maxdepth - 1) * blocksize
|
||||
*/
|
||||
STATIC uint
|
||||
xfs_calc_growrtalloc_reservation(
|
||||
struct xfs_mount *mp)
|
||||
{
|
||||
return xfs_calc_buf_res(2, mp->m_sb.sb_sectsize) +
|
||||
xfs_calc_buf_res(XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK),
|
||||
XFS_FSB_TO_B(mp, 1)) +
|
||||
xfs_calc_buf_res(1, mp->m_sb.sb_inodesize) +
|
||||
xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 1),
|
||||
XFS_FSB_TO_B(mp, 1));
|
||||
}
|
||||
|
||||
/*
|
||||
* Growing the rt section of the filesystem.
|
||||
* In the second set of transactions (ZERO) we zero the new metadata blocks.
|
||||
* one bitmap/summary block: blocksize
|
||||
*/
|
||||
STATIC uint
|
||||
xfs_calc_growrtzero_reservation(
|
||||
struct xfs_mount *mp)
|
||||
{
|
||||
return xfs_calc_buf_res(1, mp->m_sb.sb_blocksize);
|
||||
}
|
||||
|
||||
/*
|
||||
* Growing the rt section of the filesystem.
|
||||
* In the third set of transactions (FREE) we update metadata without
|
||||
* allocating any new blocks.
|
||||
* superblock: sector size
|
||||
* bitmap inode: inode size
|
||||
* summary inode: inode size
|
||||
* one bitmap block: blocksize
|
||||
* summary blocks: new summary size
|
||||
*/
|
||||
STATIC uint
|
||||
xfs_calc_growrtfree_reservation(
|
||||
struct xfs_mount *mp)
|
||||
{
|
||||
return xfs_calc_buf_res(1, mp->m_sb.sb_sectsize) +
|
||||
xfs_calc_buf_res(2, mp->m_sb.sb_inodesize) +
|
||||
xfs_calc_buf_res(1, mp->m_sb.sb_blocksize) +
|
||||
xfs_calc_buf_res(1, mp->m_rsumsize);
|
||||
}
|
||||
|
||||
/*
|
||||
* Logging the inode modification timestamp on a synchronous write.
|
||||
* inode
|
||||
*/
|
||||
STATIC uint
|
||||
xfs_calc_swrite_reservation(
|
||||
struct xfs_mount *mp)
|
||||
{
|
||||
return xfs_calc_buf_res(1, mp->m_sb.sb_inodesize);
|
||||
}
|
||||
|
||||
/*
|
||||
* Logging the inode mode bits when writing a setuid/setgid file
|
||||
* inode
|
||||
*/
|
||||
STATIC uint
|
||||
xfs_calc_writeid_reservation(xfs_mount_t *mp)
|
||||
{
|
||||
return xfs_calc_buf_res(1, mp->m_sb.sb_inodesize);
|
||||
}
|
||||
|
||||
/*
|
||||
* Converting the inode from non-attributed to attributed.
|
||||
* the inode being converted: inode size
|
||||
* agf block and superblock (for block allocation)
|
||||
* the new block (directory sized)
|
||||
* bmap blocks for the new directory block
|
||||
* allocation btrees
|
||||
*/
|
||||
STATIC uint
|
||||
xfs_calc_addafork_reservation(
|
||||
struct xfs_mount *mp)
|
||||
{
|
||||
return XFS_DQUOT_LOGRES(mp) +
|
||||
xfs_calc_buf_res(1, mp->m_sb.sb_inodesize) +
|
||||
xfs_calc_buf_res(2, mp->m_sb.sb_sectsize) +
|
||||
xfs_calc_buf_res(1, mp->m_dirblksize) +
|
||||
xfs_calc_buf_res(XFS_DAENTER_BMAP1B(mp, XFS_DATA_FORK) + 1,
|
||||
XFS_FSB_TO_B(mp, 1)) +
|
||||
xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 1),
|
||||
XFS_FSB_TO_B(mp, 1));
|
||||
}
|
||||
|
||||
/*
|
||||
* Removing the attribute fork of a file
|
||||
* the inode being truncated: inode size
|
||||
* the inode's bmap btree: max depth * block size
|
||||
* And the bmap_finish transaction can free the blocks and bmap blocks:
|
||||
* the agf for each of the ags: 4 * sector size
|
||||
* the agfl for each of the ags: 4 * sector size
|
||||
* the super block to reflect the freed blocks: sector size
|
||||
* worst case split in allocation btrees per extent assuming 4 extents:
|
||||
* 4 exts * 2 trees * (2 * max depth - 1) * block size
|
||||
*/
|
||||
STATIC uint
|
||||
xfs_calc_attrinval_reservation(
|
||||
struct xfs_mount *mp)
|
||||
{
|
||||
return MAX((xfs_calc_buf_res(1, mp->m_sb.sb_inodesize) +
|
||||
xfs_calc_buf_res(XFS_BM_MAXLEVELS(mp, XFS_ATTR_FORK),
|
||||
XFS_FSB_TO_B(mp, 1))),
|
||||
(xfs_calc_buf_res(9, mp->m_sb.sb_sectsize) +
|
||||
xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 4),
|
||||
XFS_FSB_TO_B(mp, 1))));
|
||||
}
|
||||
|
||||
/*
|
||||
* Setting an attribute at mount time.
|
||||
* the inode getting the attribute
|
||||
* the superblock for allocations
|
||||
* the agfs extents are allocated from
|
||||
* the attribute btree * max depth
|
||||
* the inode allocation btree
|
||||
* Since attribute transaction space is dependent on the size of the attribute,
|
||||
* the calculation is done partially at mount time and partially at runtime(see
|
||||
* below).
|
||||
*/
|
||||
STATIC uint
|
||||
xfs_calc_attrsetm_reservation(
|
||||
struct xfs_mount *mp)
|
||||
{
|
||||
return XFS_DQUOT_LOGRES(mp) +
|
||||
xfs_calc_buf_res(1, mp->m_sb.sb_inodesize) +
|
||||
xfs_calc_buf_res(1, mp->m_sb.sb_sectsize) +
|
||||
xfs_calc_buf_res(XFS_DA_NODE_MAXDEPTH, XFS_FSB_TO_B(mp, 1));
|
||||
}
|
||||
|
||||
/*
|
||||
* Setting an attribute at runtime, transaction space unit per block.
|
||||
* the superblock for allocations: sector size
|
||||
* the inode bmap btree could join or split: max depth * block size
|
||||
* Since the runtime attribute transaction space is dependent on the total
|
||||
* blocks needed for the 1st bmap, here we calculate out the space unit for
|
||||
* one block so that the caller could figure out the total space according
|
||||
* to the attibute extent length in blocks by: ext * XFS_ATTRSETRT_LOG_RES(mp).
|
||||
*/
|
||||
STATIC uint
|
||||
xfs_calc_attrsetrt_reservation(
|
||||
struct xfs_mount *mp)
|
||||
{
|
||||
return xfs_calc_buf_res(1, mp->m_sb.sb_sectsize) +
|
||||
xfs_calc_buf_res(XFS_BM_MAXLEVELS(mp, XFS_ATTR_FORK),
|
||||
XFS_FSB_TO_B(mp, 1));
|
||||
}
|
||||
|
||||
/*
|
||||
* Removing an attribute.
|
||||
* the inode: inode size
|
||||
* the attribute btree could join: max depth * block size
|
||||
* the inode bmap btree could join or split: max depth * block size
|
||||
* And the bmap_finish transaction can free the attr blocks freed giving:
|
||||
* the agf for the ag in which the blocks live: 2 * sector size
|
||||
* the agfl for the ag in which the blocks live: 2 * sector size
|
||||
* the superblock for the free block count: sector size
|
||||
* the allocation btrees: 2 exts * 2 trees * (2 * max depth - 1) * block size
|
||||
*/
|
||||
STATIC uint
|
||||
xfs_calc_attrrm_reservation(
|
||||
struct xfs_mount *mp)
|
||||
{
|
||||
return XFS_DQUOT_LOGRES(mp) +
|
||||
MAX((xfs_calc_buf_res(1, mp->m_sb.sb_inodesize) +
|
||||
xfs_calc_buf_res(XFS_DA_NODE_MAXDEPTH,
|
||||
XFS_FSB_TO_B(mp, 1)) +
|
||||
(uint)XFS_FSB_TO_B(mp,
|
||||
XFS_BM_MAXLEVELS(mp, XFS_ATTR_FORK)) +
|
||||
xfs_calc_buf_res(XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK), 0)),
|
||||
(xfs_calc_buf_res(5, mp->m_sb.sb_sectsize) +
|
||||
xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 2),
|
||||
XFS_FSB_TO_B(mp, 1))));
|
||||
}
|
||||
|
||||
/*
|
||||
* Clearing a bad agino number in an agi hash bucket.
|
||||
*/
|
||||
STATIC uint
|
||||
xfs_calc_clear_agi_bucket_reservation(
|
||||
struct xfs_mount *mp)
|
||||
{
|
||||
return xfs_calc_buf_res(1, mp->m_sb.sb_sectsize);
|
||||
}
|
||||
|
||||
/*
|
||||
* Clearing the quotaflags in the superblock.
|
||||
* the super block for changing quota flags: sector size
|
||||
*/
|
||||
STATIC uint
|
||||
xfs_calc_qm_sbchange_reservation(
|
||||
struct xfs_mount *mp)
|
||||
{
|
||||
return xfs_calc_buf_res(1, mp->m_sb.sb_sectsize);
|
||||
}
|
||||
|
||||
/*
|
||||
* Adjusting quota limits.
|
||||
* the xfs_disk_dquot_t: sizeof(struct xfs_disk_dquot)
|
||||
*/
|
||||
STATIC uint
|
||||
xfs_calc_qm_setqlim_reservation(
|
||||
struct xfs_mount *mp)
|
||||
{
|
||||
return xfs_calc_buf_res(1, sizeof(struct xfs_disk_dquot));
|
||||
}
|
||||
|
||||
/*
|
||||
* Allocating quota on disk if needed.
|
||||
* the write transaction log space: XFS_WRITE_LOG_RES(mp)
|
||||
* the unit of quota allocation: one system block size
|
||||
*/
|
||||
STATIC uint
|
||||
xfs_calc_qm_dqalloc_reservation(
|
||||
struct xfs_mount *mp)
|
||||
{
|
||||
return XFS_WRITE_LOG_RES(mp) +
|
||||
xfs_calc_buf_res(1,
|
||||
XFS_FSB_TO_B(mp, XFS_DQUOT_CLUSTER_SIZE_FSB) - 1);
|
||||
}
|
||||
|
||||
/*
|
||||
* Turning off quotas.
|
||||
* the xfs_qoff_logitem_t: sizeof(struct xfs_qoff_logitem) * 2
|
||||
* the superblock for the quota flags: sector size
|
||||
*/
|
||||
STATIC uint
|
||||
xfs_calc_qm_quotaoff_reservation(
|
||||
struct xfs_mount *mp)
|
||||
{
|
||||
return sizeof(struct xfs_qoff_logitem) * 2 +
|
||||
xfs_calc_buf_res(1, mp->m_sb.sb_sectsize);
|
||||
}
|
||||
|
||||
/*
|
||||
* End of turning off quotas.
|
||||
* the xfs_qoff_logitem_t: sizeof(struct xfs_qoff_logitem) * 2
|
||||
*/
|
||||
STATIC uint
|
||||
xfs_calc_qm_quotaoff_end_reservation(
|
||||
struct xfs_mount *mp)
|
||||
{
|
||||
return sizeof(struct xfs_qoff_logitem) * 2;
|
||||
}
|
||||
|
||||
/*
|
||||
* Syncing the incore super block changes to disk.
|
||||
* the super block to reflect the changes: sector size
|
||||
*/
|
||||
STATIC uint
|
||||
xfs_calc_sb_reservation(
|
||||
struct xfs_mount *mp)
|
||||
{
|
||||
return xfs_calc_buf_res(1, mp->m_sb.sb_sectsize);
|
||||
}
|
||||
|
||||
/*
|
||||
* Initialize the precomputed transaction reservation values
|
||||
* in the mount structure.
|
||||
@ -679,36 +56,7 @@ void
|
||||
xfs_trans_init(
|
||||
struct xfs_mount *mp)
|
||||
{
|
||||
struct xfs_trans_reservations *resp = &mp->m_reservations;
|
||||
|
||||
resp->tr_write = xfs_calc_write_reservation(mp);
|
||||
resp->tr_itruncate = xfs_calc_itruncate_reservation(mp);
|
||||
resp->tr_rename = xfs_calc_rename_reservation(mp);
|
||||
resp->tr_link = xfs_calc_link_reservation(mp);
|
||||
resp->tr_remove = xfs_calc_remove_reservation(mp);
|
||||
resp->tr_symlink = xfs_calc_symlink_reservation(mp);
|
||||
resp->tr_create = xfs_calc_create_reservation(mp);
|
||||
resp->tr_mkdir = xfs_calc_mkdir_reservation(mp);
|
||||
resp->tr_ifree = xfs_calc_ifree_reservation(mp);
|
||||
resp->tr_ichange = xfs_calc_ichange_reservation(mp);
|
||||
resp->tr_growdata = xfs_calc_growdata_reservation(mp);
|
||||
resp->tr_swrite = xfs_calc_swrite_reservation(mp);
|
||||
resp->tr_writeid = xfs_calc_writeid_reservation(mp);
|
||||
resp->tr_addafork = xfs_calc_addafork_reservation(mp);
|
||||
resp->tr_attrinval = xfs_calc_attrinval_reservation(mp);
|
||||
resp->tr_attrsetm = xfs_calc_attrsetm_reservation(mp);
|
||||
resp->tr_attrsetrt = xfs_calc_attrsetrt_reservation(mp);
|
||||
resp->tr_attrrm = xfs_calc_attrrm_reservation(mp);
|
||||
resp->tr_clearagi = xfs_calc_clear_agi_bucket_reservation(mp);
|
||||
resp->tr_growrtalloc = xfs_calc_growrtalloc_reservation(mp);
|
||||
resp->tr_growrtzero = xfs_calc_growrtzero_reservation(mp);
|
||||
resp->tr_growrtfree = xfs_calc_growrtfree_reservation(mp);
|
||||
resp->tr_qm_sbchange = xfs_calc_qm_sbchange_reservation(mp);
|
||||
resp->tr_qm_setqlim = xfs_calc_qm_setqlim_reservation(mp);
|
||||
resp->tr_qm_dqalloc = xfs_calc_qm_dqalloc_reservation(mp);
|
||||
resp->tr_qm_quotaoff = xfs_calc_qm_quotaoff_reservation(mp);
|
||||
resp->tr_qm_equotaoff = xfs_calc_qm_quotaoff_end_reservation(mp);
|
||||
resp->tr_sb = xfs_calc_sb_reservation(mp);
|
||||
xfs_trans_resv_calc(mp, &mp->m_reservations);
|
||||
}
|
||||
|
||||
/*
|
||||
|
||||
@ -20,80 +20,9 @@
|
||||
|
||||
struct xfs_log_item;
|
||||
|
||||
/*
|
||||
* Per-extent log reservation for the allocation btree changes
|
||||
* involved in freeing or allocating an extent.
|
||||
* 2 trees * (2 blocks/level * max depth - 1)
|
||||
*/
|
||||
#define XFS_ALLOCFREE_LOG_COUNT(mp,nx) \
|
||||
((nx) * (2 * (2 * XFS_AG_MAXLEVELS(mp) - 1)))
|
||||
#include "xfs_trans_resv.h"
|
||||
|
||||
/*
|
||||
* Per-directory log reservation for any directory change.
|
||||
* dir blocks: (1 btree block per level + data block + free block)
|
||||
* bmap btree: (levels + 2) * max depth
|
||||
* v2 directory blocks can be fragmented below the dirblksize down to the fsb
|
||||
* size, so account for that in the DAENTER macros.
|
||||
*/
|
||||
#define XFS_DIROP_LOG_COUNT(mp) \
|
||||
(XFS_DAENTER_BLOCKS(mp, XFS_DATA_FORK) + \
|
||||
XFS_DAENTER_BMAPS(mp, XFS_DATA_FORK) + 1)
|
||||
|
||||
|
||||
#define XFS_WRITE_LOG_RES(mp) ((mp)->m_reservations.tr_write)
|
||||
#define XFS_ITRUNCATE_LOG_RES(mp) ((mp)->m_reservations.tr_itruncate)
|
||||
#define XFS_RENAME_LOG_RES(mp) ((mp)->m_reservations.tr_rename)
|
||||
#define XFS_LINK_LOG_RES(mp) ((mp)->m_reservations.tr_link)
|
||||
#define XFS_REMOVE_LOG_RES(mp) ((mp)->m_reservations.tr_remove)
|
||||
#define XFS_SYMLINK_LOG_RES(mp) ((mp)->m_reservations.tr_symlink)
|
||||
#define XFS_CREATE_LOG_RES(mp) ((mp)->m_reservations.tr_create)
|
||||
#define XFS_MKDIR_LOG_RES(mp) ((mp)->m_reservations.tr_mkdir)
|
||||
#define XFS_IFREE_LOG_RES(mp) ((mp)->m_reservations.tr_ifree)
|
||||
#define XFS_ICHANGE_LOG_RES(mp) ((mp)->m_reservations.tr_ichange)
|
||||
#define XFS_GROWDATA_LOG_RES(mp) ((mp)->m_reservations.tr_growdata)
|
||||
#define XFS_GROWRTALLOC_LOG_RES(mp) ((mp)->m_reservations.tr_growrtalloc)
|
||||
#define XFS_GROWRTZERO_LOG_RES(mp) ((mp)->m_reservations.tr_growrtzero)
|
||||
#define XFS_GROWRTFREE_LOG_RES(mp) ((mp)->m_reservations.tr_growrtfree)
|
||||
#define XFS_SWRITE_LOG_RES(mp) ((mp)->m_reservations.tr_swrite)
|
||||
/*
|
||||
* Logging the inode timestamps on an fsync -- same as SWRITE
|
||||
* as long as SWRITE logs the entire inode core
|
||||
*/
|
||||
#define XFS_FSYNC_TS_LOG_RES(mp) ((mp)->m_reservations.tr_swrite)
|
||||
#define XFS_WRITEID_LOG_RES(mp) ((mp)->m_reservations.tr_swrite)
|
||||
#define XFS_ADDAFORK_LOG_RES(mp) ((mp)->m_reservations.tr_addafork)
|
||||
#define XFS_ATTRINVAL_LOG_RES(mp) ((mp)->m_reservations.tr_attrinval)
|
||||
#define XFS_ATTRSETM_LOG_RES(mp) ((mp)->m_reservations.tr_attrsetm)
|
||||
#define XFS_ATTRSETRT_LOG_RES(mp) ((mp)->m_reservations.tr_attrsetrt)
|
||||
#define XFS_ATTRRM_LOG_RES(mp) ((mp)->m_reservations.tr_attrrm)
|
||||
#define XFS_CLEAR_AGI_BUCKET_LOG_RES(mp) ((mp)->m_reservations.tr_clearagi)
|
||||
#define XFS_QM_SBCHANGE_LOG_RES(mp) ((mp)->m_reservations.tr_qm_sbchange)
|
||||
#define XFS_QM_SETQLIM_LOG_RES(mp) ((mp)->m_reservations.tr_qm_setqlim)
|
||||
#define XFS_QM_DQALLOC_LOG_RES(mp) ((mp)->m_reservations.tr_qm_dqalloc)
|
||||
#define XFS_QM_QUOTAOFF_LOG_RES(mp) ((mp)->m_reservations.tr_qm_quotaoff)
|
||||
#define XFS_QM_QUOTAOFF_END_LOG_RES(mp) ((mp)->m_reservations.tr_qm_equotaoff)
|
||||
#define XFS_SB_LOG_RES(mp) ((mp)->m_reservations.tr_sb)
|
||||
|
||||
/*
|
||||
* Various log count values.
|
||||
*/
|
||||
#define XFS_DEFAULT_LOG_COUNT 1
|
||||
#define XFS_DEFAULT_PERM_LOG_COUNT 2
|
||||
#define XFS_ITRUNCATE_LOG_COUNT 2
|
||||
#define XFS_INACTIVE_LOG_COUNT 2
|
||||
#define XFS_CREATE_LOG_COUNT 2
|
||||
#define XFS_MKDIR_LOG_COUNT 3
|
||||
#define XFS_SYMLINK_LOG_COUNT 3
|
||||
#define XFS_REMOVE_LOG_COUNT 2
|
||||
#define XFS_LINK_LOG_COUNT 2
|
||||
#define XFS_RENAME_LOG_COUNT 2
|
||||
#define XFS_WRITE_LOG_COUNT 2
|
||||
#define XFS_ADDAFORK_LOG_COUNT 2
|
||||
#define XFS_ATTRINVAL_LOG_COUNT 1
|
||||
#define XFS_ATTRSET_LOG_COUNT 3
|
||||
#define XFS_ATTRRM_LOG_COUNT 3
|
||||
|
||||
#ifdef __KERNEL__
|
||||
/* kernel only transaction subsystem defines */
|
||||
|
||||
struct xfs_buf;
|
||||
struct xfs_buftarg;
|
||||
@ -323,6 +252,4 @@ void xfs_trans_ail_destroy(struct xfs_mount *);
|
||||
extern kmem_zone_t *xfs_trans_zone;
|
||||
extern kmem_zone_t *xfs_log_item_desc_zone;
|
||||
|
||||
#endif /* __KERNEL__ */
|
||||
|
||||
#endif /* __XFS_TRANS_H__ */
|
||||
|
||||
701
fs/xfs/xfs_trans_resv.c
Normal file
701
fs/xfs/xfs_trans_resv.c
Normal file
@ -0,0 +1,701 @@
|
||||
/*
|
||||
* Copyright (c) 2000-2003,2005 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 "xfs.h"
|
||||
#include "xfs_fs.h"
|
||||
#include "xfs_format.h"
|
||||
#include "xfs_log.h"
|
||||
#include "xfs_trans_resv.h"
|
||||
#include "xfs_trans.h"
|
||||
#include "xfs_sb.h"
|
||||
#include "xfs_ag.h"
|
||||
#include "xfs_mount.h"
|
||||
#include "xfs_error.h"
|
||||
#include "xfs_da_btree.h"
|
||||
#include "xfs_bmap_btree.h"
|
||||
#include "xfs_alloc_btree.h"
|
||||
#include "xfs_ialloc_btree.h"
|
||||
#include "xfs_dinode.h"
|
||||
#include "xfs_inode.h"
|
||||
#include "xfs_btree.h"
|
||||
#include "xfs_ialloc.h"
|
||||
#include "xfs_alloc.h"
|
||||
#include "xfs_extent_busy.h"
|
||||
#include "xfs_bmap.h"
|
||||
#include "xfs_quota.h"
|
||||
#include "xfs_qm.h"
|
||||
#include "xfs_trans_space.h"
|
||||
#include "xfs_trace.h"
|
||||
|
||||
/*
|
||||
* A buffer has a format structure overhead in the log in addition
|
||||
* to the data, so we need to take this into account when reserving
|
||||
* space in a transaction for a buffer. Round the space required up
|
||||
* to a multiple of 128 bytes so that we don't change the historical
|
||||
* reservation that has been used for this overhead.
|
||||
*/
|
||||
STATIC uint
|
||||
xfs_buf_log_overhead(void)
|
||||
{
|
||||
return round_up(sizeof(struct xlog_op_header) +
|
||||
sizeof(struct xfs_buf_log_format), 128);
|
||||
}
|
||||
|
||||
/*
|
||||
* Calculate out transaction log reservation per item in bytes.
|
||||
*
|
||||
* The nbufs argument is used to indicate the number of items that
|
||||
* will be changed in a transaction. size is used to tell how many
|
||||
* bytes should be reserved per item.
|
||||
*/
|
||||
STATIC uint
|
||||
xfs_calc_buf_res(
|
||||
uint nbufs,
|
||||
uint size)
|
||||
{
|
||||
return nbufs * (size + xfs_buf_log_overhead());
|
||||
}
|
||||
|
||||
/*
|
||||
* Various log reservation values.
|
||||
*
|
||||
* These are based on the size of the file system block because that is what
|
||||
* most transactions manipulate. Each adds in an additional 128 bytes per
|
||||
* item logged to try to account for the overhead of the transaction mechanism.
|
||||
*
|
||||
* Note: Most of the reservations underestimate the number of allocation
|
||||
* groups into which they could free extents in the xfs_bmap_finish() call.
|
||||
* This is because the number in the worst case is quite high and quite
|
||||
* unusual. In order to fix this we need to change xfs_bmap_finish() to free
|
||||
* extents in only a single AG at a time. This will require changes to the
|
||||
* EFI code as well, however, so that the EFI for the extents not freed is
|
||||
* logged again in each transaction. See SGI PV #261917.
|
||||
*
|
||||
* Reservation functions here avoid a huge stack in xfs_trans_init due to
|
||||
* register overflow from temporaries in the calculations.
|
||||
*/
|
||||
|
||||
|
||||
/*
|
||||
* In a write transaction we can allocate a maximum of 2
|
||||
* extents. This gives:
|
||||
* the inode getting the new extents: inode size
|
||||
* the inode's bmap btree: max depth * block size
|
||||
* the agfs of the ags from which the extents are allocated: 2 * sector
|
||||
* the superblock free block counter: sector size
|
||||
* the allocation btrees: 2 exts * 2 trees * (2 * max depth - 1) * block size
|
||||
* And the bmap_finish transaction can free bmap blocks in a join:
|
||||
* the agfs of the ags containing the blocks: 2 * sector size
|
||||
* the agfls of the ags containing the blocks: 2 * sector size
|
||||
* the super block free block counter: sector size
|
||||
* the allocation btrees: 2 exts * 2 trees * (2 * max depth - 1) * block size
|
||||
*/
|
||||
STATIC uint
|
||||
xfs_calc_write_reservation(
|
||||
struct xfs_mount *mp)
|
||||
{
|
||||
return XFS_DQUOT_LOGRES(mp) +
|
||||
MAX((xfs_calc_buf_res(1, mp->m_sb.sb_inodesize) +
|
||||
xfs_calc_buf_res(XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK),
|
||||
XFS_FSB_TO_B(mp, 1)) +
|
||||
xfs_calc_buf_res(3, mp->m_sb.sb_sectsize) +
|
||||
xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 2),
|
||||
XFS_FSB_TO_B(mp, 1))),
|
||||
(xfs_calc_buf_res(5, mp->m_sb.sb_sectsize) +
|
||||
xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 2),
|
||||
XFS_FSB_TO_B(mp, 1))));
|
||||
}
|
||||
|
||||
/*
|
||||
* In truncating a file we free up to two extents at once. We can modify:
|
||||
* the inode being truncated: inode size
|
||||
* the inode's bmap btree: (max depth + 1) * block size
|
||||
* And the bmap_finish transaction can free the blocks and bmap blocks:
|
||||
* the agf for each of the ags: 4 * sector size
|
||||
* the agfl for each of the ags: 4 * sector size
|
||||
* the super block to reflect the freed blocks: sector size
|
||||
* worst case split in allocation btrees per extent assuming 4 extents:
|
||||
* 4 exts * 2 trees * (2 * max depth - 1) * block size
|
||||
* the inode btree: max depth * blocksize
|
||||
* the allocation btrees: 2 trees * (max depth - 1) * block size
|
||||
*/
|
||||
STATIC uint
|
||||
xfs_calc_itruncate_reservation(
|
||||
struct xfs_mount *mp)
|
||||
{
|
||||
return XFS_DQUOT_LOGRES(mp) +
|
||||
MAX((xfs_calc_buf_res(1, mp->m_sb.sb_inodesize) +
|
||||
xfs_calc_buf_res(XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK) + 1,
|
||||
XFS_FSB_TO_B(mp, 1))),
|
||||
(xfs_calc_buf_res(9, mp->m_sb.sb_sectsize) +
|
||||
xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 4),
|
||||
XFS_FSB_TO_B(mp, 1)) +
|
||||
xfs_calc_buf_res(5, 0) +
|
||||
xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 1),
|
||||
XFS_FSB_TO_B(mp, 1)) +
|
||||
xfs_calc_buf_res(2 + XFS_IALLOC_BLOCKS(mp) +
|
||||
mp->m_in_maxlevels, 0)));
|
||||
}
|
||||
|
||||
/*
|
||||
* In renaming a files we can modify:
|
||||
* the four inodes involved: 4 * inode size
|
||||
* the two directory btrees: 2 * (max depth + v2) * dir block size
|
||||
* the two directory bmap btrees: 2 * max depth * block size
|
||||
* And the bmap_finish transaction can free dir and bmap blocks (two sets
|
||||
* of bmap blocks) giving:
|
||||
* the agf for the ags in which the blocks live: 3 * sector size
|
||||
* the agfl for the ags in which the blocks live: 3 * sector size
|
||||
* the superblock for the free block count: sector size
|
||||
* the allocation btrees: 3 exts * 2 trees * (2 * max depth - 1) * block size
|
||||
*/
|
||||
STATIC uint
|
||||
xfs_calc_rename_reservation(
|
||||
struct xfs_mount *mp)
|
||||
{
|
||||
return XFS_DQUOT_LOGRES(mp) +
|
||||
MAX((xfs_calc_buf_res(4, mp->m_sb.sb_inodesize) +
|
||||
xfs_calc_buf_res(2 * XFS_DIROP_LOG_COUNT(mp),
|
||||
XFS_FSB_TO_B(mp, 1))),
|
||||
(xfs_calc_buf_res(7, mp->m_sb.sb_sectsize) +
|
||||
xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 3),
|
||||
XFS_FSB_TO_B(mp, 1))));
|
||||
}
|
||||
|
||||
/*
|
||||
* For creating a link to an inode:
|
||||
* the parent directory inode: inode size
|
||||
* the linked inode: inode size
|
||||
* the directory btree could split: (max depth + v2) * dir block size
|
||||
* the directory bmap btree could join or split: (max depth + v2) * blocksize
|
||||
* And the bmap_finish transaction can free some bmap blocks giving:
|
||||
* the agf for the ag in which the blocks live: sector size
|
||||
* the agfl for the ag in which the blocks live: sector size
|
||||
* the superblock for the free block count: sector size
|
||||
* the allocation btrees: 2 trees * (2 * max depth - 1) * block size
|
||||
*/
|
||||
STATIC uint
|
||||
xfs_calc_link_reservation(
|
||||
struct xfs_mount *mp)
|
||||
{
|
||||
return XFS_DQUOT_LOGRES(mp) +
|
||||
MAX((xfs_calc_buf_res(2, mp->m_sb.sb_inodesize) +
|
||||
xfs_calc_buf_res(XFS_DIROP_LOG_COUNT(mp),
|
||||
XFS_FSB_TO_B(mp, 1))),
|
||||
(xfs_calc_buf_res(3, mp->m_sb.sb_sectsize) +
|
||||
xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 1),
|
||||
XFS_FSB_TO_B(mp, 1))));
|
||||
}
|
||||
|
||||
/*
|
||||
* For removing a directory entry we can modify:
|
||||
* the parent directory inode: inode size
|
||||
* the removed inode: inode size
|
||||
* the directory btree could join: (max depth + v2) * dir block size
|
||||
* the directory bmap btree could join or split: (max depth + v2) * blocksize
|
||||
* And the bmap_finish transaction can free the dir and bmap blocks giving:
|
||||
* the agf for the ag in which the blocks live: 2 * sector size
|
||||
* the agfl for the ag in which the blocks live: 2 * sector size
|
||||
* the superblock for the free block count: sector size
|
||||
* the allocation btrees: 2 exts * 2 trees * (2 * max depth - 1) * block size
|
||||
*/
|
||||
STATIC uint
|
||||
xfs_calc_remove_reservation(
|
||||
struct xfs_mount *mp)
|
||||
{
|
||||
return XFS_DQUOT_LOGRES(mp) +
|
||||
MAX((xfs_calc_buf_res(2, mp->m_sb.sb_inodesize) +
|
||||
xfs_calc_buf_res(XFS_DIROP_LOG_COUNT(mp),
|
||||
XFS_FSB_TO_B(mp, 1))),
|
||||
(xfs_calc_buf_res(5, mp->m_sb.sb_sectsize) +
|
||||
xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 2),
|
||||
XFS_FSB_TO_B(mp, 1))));
|
||||
}
|
||||
|
||||
/*
|
||||
* For create, break it in to the two cases that the transaction
|
||||
* covers. We start with the modify case - allocation done by modification
|
||||
* of the state of existing inodes - and the allocation case.
|
||||
*/
|
||||
|
||||
/*
|
||||
* For create we can modify:
|
||||
* the parent directory inode: inode size
|
||||
* the new inode: inode size
|
||||
* the inode btree entry: block size
|
||||
* the superblock for the nlink flag: sector size
|
||||
* the directory btree: (max depth + v2) * dir block size
|
||||
* the directory inode's bmap btree: (max depth + v2) * block size
|
||||
*/
|
||||
STATIC uint
|
||||
xfs_calc_create_resv_modify(
|
||||
struct xfs_mount *mp)
|
||||
{
|
||||
return xfs_calc_buf_res(2, mp->m_sb.sb_inodesize) +
|
||||
xfs_calc_buf_res(1, mp->m_sb.sb_sectsize) +
|
||||
(uint)XFS_FSB_TO_B(mp, 1) +
|
||||
xfs_calc_buf_res(XFS_DIROP_LOG_COUNT(mp), XFS_FSB_TO_B(mp, 1));
|
||||
}
|
||||
|
||||
/*
|
||||
* For create we can allocate some inodes giving:
|
||||
* the agi and agf of the ag getting the new inodes: 2 * sectorsize
|
||||
* the superblock for the nlink flag: sector size
|
||||
* the inode blocks allocated: XFS_IALLOC_BLOCKS * blocksize
|
||||
* the inode btree: max depth * blocksize
|
||||
* the allocation btrees: 2 trees * (max depth - 1) * block size
|
||||
*/
|
||||
STATIC uint
|
||||
xfs_calc_create_resv_alloc(
|
||||
struct xfs_mount *mp)
|
||||
{
|
||||
return xfs_calc_buf_res(2, mp->m_sb.sb_sectsize) +
|
||||
mp->m_sb.sb_sectsize +
|
||||
xfs_calc_buf_res(XFS_IALLOC_BLOCKS(mp), XFS_FSB_TO_B(mp, 1)) +
|
||||
xfs_calc_buf_res(mp->m_in_maxlevels, XFS_FSB_TO_B(mp, 1)) +
|
||||
xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 1),
|
||||
XFS_FSB_TO_B(mp, 1));
|
||||
}
|
||||
|
||||
STATIC uint
|
||||
__xfs_calc_create_reservation(
|
||||
struct xfs_mount *mp)
|
||||
{
|
||||
return XFS_DQUOT_LOGRES(mp) +
|
||||
MAX(xfs_calc_create_resv_alloc(mp),
|
||||
xfs_calc_create_resv_modify(mp));
|
||||
}
|
||||
|
||||
/*
|
||||
* For icreate we can allocate some inodes giving:
|
||||
* the agi and agf of the ag getting the new inodes: 2 * sectorsize
|
||||
* the superblock for the nlink flag: sector size
|
||||
* the inode btree: max depth * blocksize
|
||||
* the allocation btrees: 2 trees * (max depth - 1) * block size
|
||||
*/
|
||||
STATIC uint
|
||||
xfs_calc_icreate_resv_alloc(
|
||||
struct xfs_mount *mp)
|
||||
{
|
||||
return xfs_calc_buf_res(2, mp->m_sb.sb_sectsize) +
|
||||
mp->m_sb.sb_sectsize +
|
||||
xfs_calc_buf_res(mp->m_in_maxlevels, XFS_FSB_TO_B(mp, 1)) +
|
||||
xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 1),
|
||||
XFS_FSB_TO_B(mp, 1));
|
||||
}
|
||||
|
||||
STATIC uint
|
||||
xfs_calc_icreate_reservation(xfs_mount_t *mp)
|
||||
{
|
||||
return XFS_DQUOT_LOGRES(mp) +
|
||||
MAX(xfs_calc_icreate_resv_alloc(mp),
|
||||
xfs_calc_create_resv_modify(mp));
|
||||
}
|
||||
|
||||
STATIC uint
|
||||
xfs_calc_create_reservation(
|
||||
struct xfs_mount *mp)
|
||||
{
|
||||
if (xfs_sb_version_hascrc(&mp->m_sb))
|
||||
return xfs_calc_icreate_reservation(mp);
|
||||
return __xfs_calc_create_reservation(mp);
|
||||
|
||||
}
|
||||
|
||||
/*
|
||||
* Making a new directory is the same as creating a new file.
|
||||
*/
|
||||
STATIC uint
|
||||
xfs_calc_mkdir_reservation(
|
||||
struct xfs_mount *mp)
|
||||
{
|
||||
return xfs_calc_create_reservation(mp);
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
* Making a new symplink is the same as creating a new file, but
|
||||
* with the added blocks for remote symlink data which can be up to 1kB in
|
||||
* length (MAXPATHLEN).
|
||||
*/
|
||||
STATIC uint
|
||||
xfs_calc_symlink_reservation(
|
||||
struct xfs_mount *mp)
|
||||
{
|
||||
return xfs_calc_create_reservation(mp) +
|
||||
xfs_calc_buf_res(1, MAXPATHLEN);
|
||||
}
|
||||
|
||||
/*
|
||||
* In freeing an inode we can modify:
|
||||
* the inode being freed: inode size
|
||||
* the super block free inode counter: sector size
|
||||
* the agi hash list and counters: sector size
|
||||
* the inode btree entry: block size
|
||||
* the on disk inode before ours in the agi hash list: inode cluster size
|
||||
* the inode btree: max depth * blocksize
|
||||
* the allocation btrees: 2 trees * (max depth - 1) * block size
|
||||
*/
|
||||
STATIC uint
|
||||
xfs_calc_ifree_reservation(
|
||||
struct xfs_mount *mp)
|
||||
{
|
||||
return XFS_DQUOT_LOGRES(mp) +
|
||||
xfs_calc_buf_res(1, mp->m_sb.sb_inodesize) +
|
||||
xfs_calc_buf_res(2, mp->m_sb.sb_sectsize) +
|
||||
xfs_calc_buf_res(1, XFS_FSB_TO_B(mp, 1)) +
|
||||
MAX((__uint16_t)XFS_FSB_TO_B(mp, 1),
|
||||
XFS_INODE_CLUSTER_SIZE(mp)) +
|
||||
xfs_calc_buf_res(1, 0) +
|
||||
xfs_calc_buf_res(2 + XFS_IALLOC_BLOCKS(mp) +
|
||||
mp->m_in_maxlevels, 0) +
|
||||
xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 1),
|
||||
XFS_FSB_TO_B(mp, 1));
|
||||
}
|
||||
|
||||
/*
|
||||
* When only changing the inode we log the inode and possibly the superblock
|
||||
* We also add a bit of slop for the transaction stuff.
|
||||
*/
|
||||
STATIC uint
|
||||
xfs_calc_ichange_reservation(
|
||||
struct xfs_mount *mp)
|
||||
{
|
||||
return XFS_DQUOT_LOGRES(mp) +
|
||||
mp->m_sb.sb_inodesize +
|
||||
mp->m_sb.sb_sectsize +
|
||||
512;
|
||||
|
||||
}
|
||||
|
||||
/*
|
||||
* Growing the data section of the filesystem.
|
||||
* superblock
|
||||
* agi and agf
|
||||
* allocation btrees
|
||||
*/
|
||||
STATIC uint
|
||||
xfs_calc_growdata_reservation(
|
||||
struct xfs_mount *mp)
|
||||
{
|
||||
return xfs_calc_buf_res(3, mp->m_sb.sb_sectsize) +
|
||||
xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 1),
|
||||
XFS_FSB_TO_B(mp, 1));
|
||||
}
|
||||
|
||||
/*
|
||||
* Growing the rt section of the filesystem.
|
||||
* In the first set of transactions (ALLOC) we allocate space to the
|
||||
* bitmap or summary files.
|
||||
* superblock: sector size
|
||||
* agf of the ag from which the extent is allocated: sector size
|
||||
* bmap btree for bitmap/summary inode: max depth * blocksize
|
||||
* bitmap/summary inode: inode size
|
||||
* allocation btrees for 1 block alloc: 2 * (2 * maxdepth - 1) * blocksize
|
||||
*/
|
||||
STATIC uint
|
||||
xfs_calc_growrtalloc_reservation(
|
||||
struct xfs_mount *mp)
|
||||
{
|
||||
return xfs_calc_buf_res(2, mp->m_sb.sb_sectsize) +
|
||||
xfs_calc_buf_res(XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK),
|
||||
XFS_FSB_TO_B(mp, 1)) +
|
||||
xfs_calc_buf_res(1, mp->m_sb.sb_inodesize) +
|
||||
xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 1),
|
||||
XFS_FSB_TO_B(mp, 1));
|
||||
}
|
||||
|
||||
/*
|
||||
* Growing the rt section of the filesystem.
|
||||
* In the second set of transactions (ZERO) we zero the new metadata blocks.
|
||||
* one bitmap/summary block: blocksize
|
||||
*/
|
||||
STATIC uint
|
||||
xfs_calc_growrtzero_reservation(
|
||||
struct xfs_mount *mp)
|
||||
{
|
||||
return xfs_calc_buf_res(1, mp->m_sb.sb_blocksize);
|
||||
}
|
||||
|
||||
/*
|
||||
* Growing the rt section of the filesystem.
|
||||
* In the third set of transactions (FREE) we update metadata without
|
||||
* allocating any new blocks.
|
||||
* superblock: sector size
|
||||
* bitmap inode: inode size
|
||||
* summary inode: inode size
|
||||
* one bitmap block: blocksize
|
||||
* summary blocks: new summary size
|
||||
*/
|
||||
STATIC uint
|
||||
xfs_calc_growrtfree_reservation(
|
||||
struct xfs_mount *mp)
|
||||
{
|
||||
return xfs_calc_buf_res(1, mp->m_sb.sb_sectsize) +
|
||||
xfs_calc_buf_res(2, mp->m_sb.sb_inodesize) +
|
||||
xfs_calc_buf_res(1, mp->m_sb.sb_blocksize) +
|
||||
xfs_calc_buf_res(1, mp->m_rsumsize);
|
||||
}
|
||||
|
||||
/*
|
||||
* Logging the inode modification timestamp on a synchronous write.
|
||||
* inode
|
||||
*/
|
||||
STATIC uint
|
||||
xfs_calc_swrite_reservation(
|
||||
struct xfs_mount *mp)
|
||||
{
|
||||
return xfs_calc_buf_res(1, mp->m_sb.sb_inodesize);
|
||||
}
|
||||
|
||||
/*
|
||||
* Logging the inode mode bits when writing a setuid/setgid file
|
||||
* inode
|
||||
*/
|
||||
STATIC uint
|
||||
xfs_calc_writeid_reservation(xfs_mount_t *mp)
|
||||
{
|
||||
return xfs_calc_buf_res(1, mp->m_sb.sb_inodesize);
|
||||
}
|
||||
|
||||
/*
|
||||
* Converting the inode from non-attributed to attributed.
|
||||
* the inode being converted: inode size
|
||||
* agf block and superblock (for block allocation)
|
||||
* the new block (directory sized)
|
||||
* bmap blocks for the new directory block
|
||||
* allocation btrees
|
||||
*/
|
||||
STATIC uint
|
||||
xfs_calc_addafork_reservation(
|
||||
struct xfs_mount *mp)
|
||||
{
|
||||
return XFS_DQUOT_LOGRES(mp) +
|
||||
xfs_calc_buf_res(1, mp->m_sb.sb_inodesize) +
|
||||
xfs_calc_buf_res(2, mp->m_sb.sb_sectsize) +
|
||||
xfs_calc_buf_res(1, mp->m_dirblksize) +
|
||||
xfs_calc_buf_res(XFS_DAENTER_BMAP1B(mp, XFS_DATA_FORK) + 1,
|
||||
XFS_FSB_TO_B(mp, 1)) +
|
||||
xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 1),
|
||||
XFS_FSB_TO_B(mp, 1));
|
||||
}
|
||||
|
||||
/*
|
||||
* Removing the attribute fork of a file
|
||||
* the inode being truncated: inode size
|
||||
* the inode's bmap btree: max depth * block size
|
||||
* And the bmap_finish transaction can free the blocks and bmap blocks:
|
||||
* the agf for each of the ags: 4 * sector size
|
||||
* the agfl for each of the ags: 4 * sector size
|
||||
* the super block to reflect the freed blocks: sector size
|
||||
* worst case split in allocation btrees per extent assuming 4 extents:
|
||||
* 4 exts * 2 trees * (2 * max depth - 1) * block size
|
||||
*/
|
||||
STATIC uint
|
||||
xfs_calc_attrinval_reservation(
|
||||
struct xfs_mount *mp)
|
||||
{
|
||||
return MAX((xfs_calc_buf_res(1, mp->m_sb.sb_inodesize) +
|
||||
xfs_calc_buf_res(XFS_BM_MAXLEVELS(mp, XFS_ATTR_FORK),
|
||||
XFS_FSB_TO_B(mp, 1))),
|
||||
(xfs_calc_buf_res(9, mp->m_sb.sb_sectsize) +
|
||||
xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 4),
|
||||
XFS_FSB_TO_B(mp, 1))));
|
||||
}
|
||||
|
||||
/*
|
||||
* Setting an attribute at mount time.
|
||||
* the inode getting the attribute
|
||||
* the superblock for allocations
|
||||
* the agfs extents are allocated from
|
||||
* the attribute btree * max depth
|
||||
* the inode allocation btree
|
||||
* Since attribute transaction space is dependent on the size of the attribute,
|
||||
* the calculation is done partially at mount time and partially at runtime(see
|
||||
* below).
|
||||
*/
|
||||
STATIC uint
|
||||
xfs_calc_attrsetm_reservation(
|
||||
struct xfs_mount *mp)
|
||||
{
|
||||
return XFS_DQUOT_LOGRES(mp) +
|
||||
xfs_calc_buf_res(1, mp->m_sb.sb_inodesize) +
|
||||
xfs_calc_buf_res(1, mp->m_sb.sb_sectsize) +
|
||||
xfs_calc_buf_res(XFS_DA_NODE_MAXDEPTH, XFS_FSB_TO_B(mp, 1));
|
||||
}
|
||||
|
||||
/*
|
||||
* Setting an attribute at runtime, transaction space unit per block.
|
||||
* the superblock for allocations: sector size
|
||||
* the inode bmap btree could join or split: max depth * block size
|
||||
* Since the runtime attribute transaction space is dependent on the total
|
||||
* blocks needed for the 1st bmap, here we calculate out the space unit for
|
||||
* one block so that the caller could figure out the total space according
|
||||
* to the attibute extent length in blocks by: ext * XFS_ATTRSETRT_LOG_RES(mp).
|
||||
*/
|
||||
STATIC uint
|
||||
xfs_calc_attrsetrt_reservation(
|
||||
struct xfs_mount *mp)
|
||||
{
|
||||
return xfs_calc_buf_res(1, mp->m_sb.sb_sectsize) +
|
||||
xfs_calc_buf_res(XFS_BM_MAXLEVELS(mp, XFS_ATTR_FORK),
|
||||
XFS_FSB_TO_B(mp, 1));
|
||||
}
|
||||
|
||||
/*
|
||||
* Removing an attribute.
|
||||
* the inode: inode size
|
||||
* the attribute btree could join: max depth * block size
|
||||
* the inode bmap btree could join or split: max depth * block size
|
||||
* And the bmap_finish transaction can free the attr blocks freed giving:
|
||||
* the agf for the ag in which the blocks live: 2 * sector size
|
||||
* the agfl for the ag in which the blocks live: 2 * sector size
|
||||
* the superblock for the free block count: sector size
|
||||
* the allocation btrees: 2 exts * 2 trees * (2 * max depth - 1) * block size
|
||||
*/
|
||||
STATIC uint
|
||||
xfs_calc_attrrm_reservation(
|
||||
struct xfs_mount *mp)
|
||||
{
|
||||
return XFS_DQUOT_LOGRES(mp) +
|
||||
MAX((xfs_calc_buf_res(1, mp->m_sb.sb_inodesize) +
|
||||
xfs_calc_buf_res(XFS_DA_NODE_MAXDEPTH,
|
||||
XFS_FSB_TO_B(mp, 1)) +
|
||||
(uint)XFS_FSB_TO_B(mp,
|
||||
XFS_BM_MAXLEVELS(mp, XFS_ATTR_FORK)) +
|
||||
xfs_calc_buf_res(XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK), 0)),
|
||||
(xfs_calc_buf_res(5, mp->m_sb.sb_sectsize) +
|
||||
xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 2),
|
||||
XFS_FSB_TO_B(mp, 1))));
|
||||
}
|
||||
|
||||
/*
|
||||
* Clearing a bad agino number in an agi hash bucket.
|
||||
*/
|
||||
STATIC uint
|
||||
xfs_calc_clear_agi_bucket_reservation(
|
||||
struct xfs_mount *mp)
|
||||
{
|
||||
return xfs_calc_buf_res(1, mp->m_sb.sb_sectsize);
|
||||
}
|
||||
|
||||
/*
|
||||
* Clearing the quotaflags in the superblock.
|
||||
* the super block for changing quota flags: sector size
|
||||
*/
|
||||
STATIC uint
|
||||
xfs_calc_qm_sbchange_reservation(
|
||||
struct xfs_mount *mp)
|
||||
{
|
||||
return xfs_calc_buf_res(1, mp->m_sb.sb_sectsize);
|
||||
}
|
||||
|
||||
/*
|
||||
* Adjusting quota limits.
|
||||
* the xfs_disk_dquot_t: sizeof(struct xfs_disk_dquot)
|
||||
*/
|
||||
STATIC uint
|
||||
xfs_calc_qm_setqlim_reservation(
|
||||
struct xfs_mount *mp)
|
||||
{
|
||||
return xfs_calc_buf_res(1, sizeof(struct xfs_disk_dquot));
|
||||
}
|
||||
|
||||
/*
|
||||
* Allocating quota on disk if needed.
|
||||
* the write transaction log space: XFS_WRITE_LOG_RES(mp)
|
||||
* the unit of quota allocation: one system block size
|
||||
*/
|
||||
STATIC uint
|
||||
xfs_calc_qm_dqalloc_reservation(
|
||||
struct xfs_mount *mp)
|
||||
{
|
||||
return XFS_WRITE_LOG_RES(mp) +
|
||||
xfs_calc_buf_res(1,
|
||||
XFS_FSB_TO_B(mp, XFS_DQUOT_CLUSTER_SIZE_FSB) - 1);
|
||||
}
|
||||
|
||||
/*
|
||||
* Turning off quotas.
|
||||
* the xfs_qoff_logitem_t: sizeof(struct xfs_qoff_logitem) * 2
|
||||
* the superblock for the quota flags: sector size
|
||||
*/
|
||||
STATIC uint
|
||||
xfs_calc_qm_quotaoff_reservation(
|
||||
struct xfs_mount *mp)
|
||||
{
|
||||
return sizeof(struct xfs_qoff_logitem) * 2 +
|
||||
xfs_calc_buf_res(1, mp->m_sb.sb_sectsize);
|
||||
}
|
||||
|
||||
/*
|
||||
* End of turning off quotas.
|
||||
* the xfs_qoff_logitem_t: sizeof(struct xfs_qoff_logitem) * 2
|
||||
*/
|
||||
STATIC uint
|
||||
xfs_calc_qm_quotaoff_end_reservation(
|
||||
struct xfs_mount *mp)
|
||||
{
|
||||
return sizeof(struct xfs_qoff_logitem) * 2;
|
||||
}
|
||||
|
||||
/*
|
||||
* Syncing the incore super block changes to disk.
|
||||
* the super block to reflect the changes: sector size
|
||||
*/
|
||||
STATIC uint
|
||||
xfs_calc_sb_reservation(
|
||||
struct xfs_mount *mp)
|
||||
{
|
||||
return xfs_calc_buf_res(1, mp->m_sb.sb_sectsize);
|
||||
}
|
||||
|
||||
void
|
||||
xfs_trans_resv_calc(
|
||||
struct xfs_mount *mp,
|
||||
struct xfs_trans_resv *resp)
|
||||
{
|
||||
resp->tr_write = xfs_calc_write_reservation(mp);
|
||||
resp->tr_itruncate = xfs_calc_itruncate_reservation(mp);
|
||||
resp->tr_rename = xfs_calc_rename_reservation(mp);
|
||||
resp->tr_link = xfs_calc_link_reservation(mp);
|
||||
resp->tr_remove = xfs_calc_remove_reservation(mp);
|
||||
resp->tr_symlink = xfs_calc_symlink_reservation(mp);
|
||||
resp->tr_create = xfs_calc_create_reservation(mp);
|
||||
resp->tr_mkdir = xfs_calc_mkdir_reservation(mp);
|
||||
resp->tr_ifree = xfs_calc_ifree_reservation(mp);
|
||||
resp->tr_ichange = xfs_calc_ichange_reservation(mp);
|
||||
resp->tr_growdata = xfs_calc_growdata_reservation(mp);
|
||||
resp->tr_swrite = xfs_calc_swrite_reservation(mp);
|
||||
resp->tr_writeid = xfs_calc_writeid_reservation(mp);
|
||||
resp->tr_addafork = xfs_calc_addafork_reservation(mp);
|
||||
resp->tr_attrinval = xfs_calc_attrinval_reservation(mp);
|
||||
resp->tr_attrsetm = xfs_calc_attrsetm_reservation(mp);
|
||||
resp->tr_attrsetrt = xfs_calc_attrsetrt_reservation(mp);
|
||||
resp->tr_attrrm = xfs_calc_attrrm_reservation(mp);
|
||||
resp->tr_clearagi = xfs_calc_clear_agi_bucket_reservation(mp);
|
||||
resp->tr_growrtalloc = xfs_calc_growrtalloc_reservation(mp);
|
||||
resp->tr_growrtzero = xfs_calc_growrtzero_reservation(mp);
|
||||
resp->tr_growrtfree = xfs_calc_growrtfree_reservation(mp);
|
||||
resp->tr_qm_sbchange = xfs_calc_qm_sbchange_reservation(mp);
|
||||
resp->tr_qm_setqlim = xfs_calc_qm_setqlim_reservation(mp);
|
||||
resp->tr_qm_dqalloc = xfs_calc_qm_dqalloc_reservation(mp);
|
||||
resp->tr_qm_quotaoff = xfs_calc_qm_quotaoff_reservation(mp);
|
||||
resp->tr_qm_equotaoff = xfs_calc_qm_quotaoff_end_reservation(mp);
|
||||
resp->tr_sb = xfs_calc_sb_reservation(mp);
|
||||
}
|
||||
137
fs/xfs/xfs_trans_resv.h
Normal file
137
fs/xfs/xfs_trans_resv.h
Normal file
@ -0,0 +1,137 @@
|
||||
/*
|
||||
* Copyright (c) 2000-2002,2005 Silicon Graphics, 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
|
||||
*/
|
||||
#ifndef __XFS_TRANS_RESV_H__
|
||||
#define __XFS_TRANS_RESV_H__
|
||||
|
||||
struct xfs_mount;
|
||||
|
||||
/*
|
||||
* structure for maintaining pre-calculated transaction reservations.
|
||||
*/
|
||||
struct xfs_trans_resv {
|
||||
uint tr_write; /* extent alloc trans */
|
||||
uint tr_itruncate; /* truncate trans */
|
||||
uint tr_rename; /* rename trans */
|
||||
uint tr_link; /* link trans */
|
||||
uint tr_remove; /* unlink trans */
|
||||
uint tr_symlink; /* symlink trans */
|
||||
uint tr_create; /* create trans */
|
||||
uint tr_mkdir; /* mkdir trans */
|
||||
uint tr_ifree; /* inode free trans */
|
||||
uint tr_ichange; /* inode update trans */
|
||||
uint tr_growdata; /* fs data section grow trans */
|
||||
uint tr_swrite; /* sync write inode trans */
|
||||
uint tr_addafork; /* cvt inode to attributed trans */
|
||||
uint tr_writeid; /* write setuid/setgid file */
|
||||
uint tr_attrinval; /* attr fork buffer invalidation */
|
||||
uint tr_attrsetm; /* set/create an attribute at mount time */
|
||||
uint tr_attrsetrt; /* set/create an attribute at runtime */
|
||||
uint tr_attrrm; /* remove an attribute */
|
||||
uint tr_clearagi; /* clear bad agi unlinked ino bucket */
|
||||
uint tr_growrtalloc; /* grow realtime allocations */
|
||||
uint tr_growrtzero; /* grow realtime zeroing */
|
||||
uint tr_growrtfree; /* grow realtime freeing */
|
||||
uint tr_qm_sbchange; /* change quota flags */
|
||||
uint tr_qm_setqlim; /* adjust quota limits */
|
||||
uint tr_qm_dqalloc; /* allocate quota on disk */
|
||||
uint tr_qm_quotaoff; /* turn quota off */
|
||||
uint tr_qm_equotaoff;/* end of turn quota off */
|
||||
uint tr_sb; /* modify superblock */
|
||||
};
|
||||
|
||||
/*
|
||||
* Per-extent log reservation for the allocation btree changes
|
||||
* involved in freeing or allocating an extent.
|
||||
* 2 trees * (2 blocks/level * max depth - 1) * block size
|
||||
*/
|
||||
#define XFS_ALLOCFREE_LOG_RES(mp,nx) \
|
||||
((nx) * (2 * XFS_FSB_TO_B((mp), 2 * XFS_AG_MAXLEVELS(mp) - 1)))
|
||||
#define XFS_ALLOCFREE_LOG_COUNT(mp,nx) \
|
||||
((nx) * (2 * (2 * XFS_AG_MAXLEVELS(mp) - 1)))
|
||||
|
||||
/*
|
||||
* Per-directory log reservation for any directory change.
|
||||
* dir blocks: (1 btree block per level + data block + free block) * dblock size
|
||||
* bmap btree: (levels + 2) * max depth * block size
|
||||
* v2 directory blocks can be fragmented below the dirblksize down to the fsb
|
||||
* size, so account for that in the DAENTER macros.
|
||||
*/
|
||||
#define XFS_DIROP_LOG_RES(mp) \
|
||||
(XFS_FSB_TO_B(mp, XFS_DAENTER_BLOCKS(mp, XFS_DATA_FORK)) + \
|
||||
(XFS_FSB_TO_B(mp, XFS_DAENTER_BMAPS(mp, XFS_DATA_FORK) + 1)))
|
||||
#define XFS_DIROP_LOG_COUNT(mp) \
|
||||
(XFS_DAENTER_BLOCKS(mp, XFS_DATA_FORK) + \
|
||||
XFS_DAENTER_BMAPS(mp, XFS_DATA_FORK) + 1)
|
||||
|
||||
|
||||
#define XFS_WRITE_LOG_RES(mp) ((mp)->m_reservations.tr_write)
|
||||
#define XFS_ITRUNCATE_LOG_RES(mp) ((mp)->m_reservations.tr_itruncate)
|
||||
#define XFS_RENAME_LOG_RES(mp) ((mp)->m_reservations.tr_rename)
|
||||
#define XFS_LINK_LOG_RES(mp) ((mp)->m_reservations.tr_link)
|
||||
#define XFS_REMOVE_LOG_RES(mp) ((mp)->m_reservations.tr_remove)
|
||||
#define XFS_SYMLINK_LOG_RES(mp) ((mp)->m_reservations.tr_symlink)
|
||||
#define XFS_CREATE_LOG_RES(mp) ((mp)->m_reservations.tr_create)
|
||||
#define XFS_MKDIR_LOG_RES(mp) ((mp)->m_reservations.tr_mkdir)
|
||||
#define XFS_IFREE_LOG_RES(mp) ((mp)->m_reservations.tr_ifree)
|
||||
#define XFS_ICHANGE_LOG_RES(mp) ((mp)->m_reservations.tr_ichange)
|
||||
#define XFS_GROWDATA_LOG_RES(mp) ((mp)->m_reservations.tr_growdata)
|
||||
#define XFS_GROWRTALLOC_LOG_RES(mp) ((mp)->m_reservations.tr_growrtalloc)
|
||||
#define XFS_GROWRTZERO_LOG_RES(mp) ((mp)->m_reservations.tr_growrtzero)
|
||||
#define XFS_GROWRTFREE_LOG_RES(mp) ((mp)->m_reservations.tr_growrtfree)
|
||||
#define XFS_SWRITE_LOG_RES(mp) ((mp)->m_reservations.tr_swrite)
|
||||
/*
|
||||
* Logging the inode timestamps on an fsync -- same as SWRITE
|
||||
* as long as SWRITE logs the entire inode core
|
||||
*/
|
||||
#define XFS_FSYNC_TS_LOG_RES(mp) ((mp)->m_reservations.tr_swrite)
|
||||
#define XFS_WRITEID_LOG_RES(mp) ((mp)->m_reservations.tr_swrite)
|
||||
#define XFS_ADDAFORK_LOG_RES(mp) ((mp)->m_reservations.tr_addafork)
|
||||
#define XFS_ATTRINVAL_LOG_RES(mp) ((mp)->m_reservations.tr_attrinval)
|
||||
#define XFS_ATTRSETM_LOG_RES(mp) ((mp)->m_reservations.tr_attrsetm)
|
||||
#define XFS_ATTRSETRT_LOG_RES(mp) ((mp)->m_reservations.tr_attrsetrt)
|
||||
#define XFS_ATTRRM_LOG_RES(mp) ((mp)->m_reservations.tr_attrrm)
|
||||
#define XFS_CLEAR_AGI_BUCKET_LOG_RES(mp) ((mp)->m_reservations.tr_clearagi)
|
||||
#define XFS_QM_SBCHANGE_LOG_RES(mp) ((mp)->m_reservations.tr_qm_sbchange)
|
||||
#define XFS_QM_SETQLIM_LOG_RES(mp) ((mp)->m_reservations.tr_qm_setqlim)
|
||||
#define XFS_QM_DQALLOC_LOG_RES(mp) ((mp)->m_reservations.tr_qm_dqalloc)
|
||||
#define XFS_QM_QUOTAOFF_LOG_RES(mp) ((mp)->m_reservations.tr_qm_quotaoff)
|
||||
#define XFS_QM_QUOTAOFF_END_LOG_RES(mp) ((mp)->m_reservations.tr_qm_equotaoff)
|
||||
#define XFS_SB_LOG_RES(mp) ((mp)->m_reservations.tr_sb)
|
||||
|
||||
/*
|
||||
* Various log count values.
|
||||
*/
|
||||
#define XFS_DEFAULT_LOG_COUNT 1
|
||||
#define XFS_DEFAULT_PERM_LOG_COUNT 2
|
||||
#define XFS_ITRUNCATE_LOG_COUNT 2
|
||||
#define XFS_INACTIVE_LOG_COUNT 2
|
||||
#define XFS_CREATE_LOG_COUNT 2
|
||||
#define XFS_MKDIR_LOG_COUNT 3
|
||||
#define XFS_SYMLINK_LOG_COUNT 3
|
||||
#define XFS_REMOVE_LOG_COUNT 2
|
||||
#define XFS_LINK_LOG_COUNT 2
|
||||
#define XFS_RENAME_LOG_COUNT 2
|
||||
#define XFS_WRITE_LOG_COUNT 2
|
||||
#define XFS_ADDAFORK_LOG_COUNT 2
|
||||
#define XFS_ATTRINVAL_LOG_COUNT 1
|
||||
#define XFS_ATTRSET_LOG_COUNT 3
|
||||
#define XFS_ATTRRM_LOG_COUNT 3
|
||||
|
||||
void xfs_trans_resv_calc(struct xfs_mount *mp, struct xfs_trans_resv *resp);
|
||||
|
||||
#endif /* __XFS_TRANS_RESV_H__ */
|
||||
Loading…
Reference in New Issue
Block a user