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authorDave Chinner <dchinner@redhat.com>2014-06-25 08:57:53 +0400
committerDave Chinner <david@fromorbit.com>2014-06-25 08:57:53 +0400
commit30f712c9dd69348aa51351d5cb6d366bf4fae31d (patch)
tree9b246ca3986b784d8f9f6841466dfd4c90909e47 /fs/xfs/xfs_trans_resv.c
parent84be0ffc9043f7c56044294eb775a2200452c76d (diff)
downloadlinux-30f712c9dd69348aa51351d5cb6d366bf4fae31d.tar.xz
libxfs: move source files
Move all the source files that are shared with userspace into libxfs/. This is done as one big chunk simpy to get it done quickly Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Brian Foster <bfoster@redhat.com> Signed-off-by: Dave Chinner <david@fromorbit.com>
Diffstat (limited to 'fs/xfs/xfs_trans_resv.c')
-rw-r--r--fs/xfs/xfs_trans_resv.c894
1 files changed, 0 insertions, 894 deletions
diff --git a/fs/xfs/xfs_trans_resv.c b/fs/xfs/xfs_trans_resv.c
deleted file mode 100644
index f2bda7c76b8a..000000000000
--- a/fs/xfs/xfs_trans_resv.c
+++ /dev/null
@@ -1,894 +0,0 @@
-/*
- * 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_shared.h"
-#include "xfs_format.h"
-#include "xfs_log_format.h"
-#include "xfs_trans_resv.h"
-#include "xfs_sb.h"
-#include "xfs_ag.h"
-#include "xfs_mount.h"
-#include "xfs_da_format.h"
-#include "xfs_da_btree.h"
-#include "xfs_inode.h"
-#include "xfs_bmap_btree.h"
-#include "xfs_ialloc.h"
-#include "xfs_quota.h"
-#include "xfs_trans.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());
-}
-
-/*
- * Logging inodes is really tricksy. They are logged in memory format,
- * which means that what we write into the log doesn't directly translate into
- * the amount of space they use on disk.
- *
- * Case in point - btree format forks in memory format use more space than the
- * on-disk format. In memory, the buffer contains a normal btree block header so
- * the btree code can treat it as though it is just another generic buffer.
- * However, when we write it to the inode fork, we don't write all of this
- * header as it isn't needed. e.g. the root is only ever in the inode, so
- * there's no need for sibling pointers which would waste 16 bytes of space.
- *
- * Hence when we have an inode with a maximally sized btree format fork, then
- * amount of information we actually log is greater than the size of the inode
- * on disk. Hence we need an inode reservation function that calculates all this
- * correctly. So, we log:
- *
- * - 4 log op headers for object
- * - for the ilf, the inode core and 2 forks
- * - inode log format object
- * - the inode core
- * - two inode forks containing bmap btree root blocks.
- * - the btree data contained by both forks will fit into the inode size,
- * hence when combined with the inode core above, we have a total of the
- * actual inode size.
- * - the BMBT headers need to be accounted separately, as they are
- * additional to the records and pointers that fit inside the inode
- * forks.
- */
-STATIC uint
-xfs_calc_inode_res(
- struct xfs_mount *mp,
- uint ninodes)
-{
- return ninodes *
- (4 * sizeof(struct xlog_op_header) +
- sizeof(struct xfs_inode_log_format) +
- mp->m_sb.sb_inodesize +
- 2 * XFS_BMBT_BLOCK_LEN(mp));
-}
-
-/*
- * The free inode btree is a conditional feature and the log reservation
- * requirements differ slightly from that of the traditional inode allocation
- * btree. The finobt tracks records for inode chunks with at least one free
- * inode. A record can be removed from the tree for an inode allocation
- * or free and thus the finobt reservation is unconditional across:
- *
- * - inode allocation
- * - inode free
- * - inode chunk allocation
- *
- * The 'modify' param indicates to include the record modification scenario. The
- * 'alloc' param indicates to include the reservation for free space btree
- * modifications on behalf of finobt modifications. This is required only for
- * transactions that do not already account for free space btree modifications.
- *
- * the free inode btree: max depth * block size
- * the allocation btrees: 2 trees * (max depth - 1) * block size
- * the free inode btree entry: block size
- */
-STATIC uint
-xfs_calc_finobt_res(
- struct xfs_mount *mp,
- int alloc,
- int modify)
-{
- uint res;
-
- if (!xfs_sb_version_hasfinobt(&mp->m_sb))
- return 0;
-
- res = xfs_calc_buf_res(mp->m_in_maxlevels, XFS_FSB_TO_B(mp, 1));
- if (alloc)
- res += xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 1),
- XFS_FSB_TO_B(mp, 1));
- if (modify)
- res += (uint)XFS_FSB_TO_B(mp, 1);
-
- return res;
-}
-
-/*
- * 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_inode_res(mp, 1) +
- 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_inode_res(mp, 1) +
- 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 + mp->m_ialloc_blks +
- 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_inode_res(mp, 4) +
- 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 removing an inode from unlinked list at first, we can modify:
- * the agi hash list and counters: sector size
- * the on disk inode before ours in the agi hash list: inode cluster size
- */
-STATIC uint
-xfs_calc_iunlink_remove_reservation(
- struct xfs_mount *mp)
-{
- return xfs_calc_buf_res(1, mp->m_sb.sb_sectsize) +
- max_t(uint, XFS_FSB_TO_B(mp, 1), mp->m_inode_cluster_size);
-}
-
-/*
- * 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) +
- xfs_calc_iunlink_remove_reservation(mp) +
- MAX((xfs_calc_inode_res(mp, 2) +
- 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 adding an inode to unlinked list we can modify:
- * the agi hash list: sector size
- * the unlinked inode: inode size
- */
-STATIC uint
-xfs_calc_iunlink_add_reservation(xfs_mount_t *mp)
-{
- return xfs_calc_buf_res(1, mp->m_sb.sb_sectsize) +
- xfs_calc_inode_res(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) +
- xfs_calc_iunlink_add_reservation(mp) +
- MAX((xfs_calc_inode_res(mp, 1) +
- xfs_calc_buf_res(XFS_DIROP_LOG_COUNT(mp),
- XFS_FSB_TO_B(mp, 1))),
- (xfs_calc_buf_res(4, 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
- * the finobt (record modification and allocation btrees)
- */
-STATIC uint
-xfs_calc_create_resv_modify(
- struct xfs_mount *mp)
-{
- return xfs_calc_inode_res(mp, 2) +
- 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)) +
- xfs_calc_finobt_res(mp, 1, 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: mp->m_ialloc_blks * 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(mp->m_ialloc_blks, 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
- * the finobt (record insertion)
- */
-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)) +
- xfs_calc_finobt_res(mp, 0, 0);
-}
-
-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);
-
-}
-
-STATIC uint
-xfs_calc_create_tmpfile_reservation(
- struct xfs_mount *mp)
-{
- uint res = XFS_DQUOT_LOGRES(mp);
-
- if (xfs_sb_version_hascrc(&mp->m_sb))
- res += xfs_calc_icreate_resv_alloc(mp);
- else
- res += xfs_calc_create_resv_alloc(mp);
-
- return res + xfs_calc_iunlink_add_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
- * the finobt (record insertion, removal or modification)
- */
-STATIC uint
-xfs_calc_ifree_reservation(
- struct xfs_mount *mp)
-{
- return XFS_DQUOT_LOGRES(mp) +
- xfs_calc_inode_res(mp, 1) +
- xfs_calc_buf_res(1, mp->m_sb.sb_sectsize) +
- xfs_calc_buf_res(1, XFS_FSB_TO_B(mp, 1)) +
- xfs_calc_iunlink_remove_reservation(mp) +
- xfs_calc_buf_res(1, 0) +
- xfs_calc_buf_res(2 + mp->m_ialloc_blks +
- mp->m_in_maxlevels, 0) +
- xfs_calc_buf_res(XFS_ALLOCFREE_LOG_COUNT(mp, 1),
- XFS_FSB_TO_B(mp, 1)) +
- xfs_calc_finobt_res(mp, 0, 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) +
- xfs_calc_inode_res(mp, 1) +
- xfs_calc_buf_res(1, mp->m_sb.sb_sectsize);
-
-}
-
-/*
- * 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_inode_res(mp, 1) +
- 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_inode_res(mp, 2) +
- 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_inode_res(mp, 1);
-}
-
-/*
- * Logging the inode mode bits when writing a setuid/setgid file
- * inode
- */
-STATIC uint
-xfs_calc_writeid_reservation(
- struct xfs_mount *mp)
-{
- return xfs_calc_inode_res(mp, 1);
-}
-
-/*
- * 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_inode_res(mp, 1) +
- xfs_calc_buf_res(2, mp->m_sb.sb_sectsize) +
- xfs_calc_buf_res(1, mp->m_dir_geo->blksize) +
- 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_inode_res(mp, 1) +
- 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_inode_res(mp, 1) +
- 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 * M_RES(mp)->tr_attrsetrt.tr_logres
- */
-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_inode_res(mp, 1) +
- 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 for quota file extent allocation
- * the unit of quota allocation: one system block size
- */
-STATIC uint
-xfs_calc_qm_dqalloc_reservation(
- struct xfs_mount *mp)
-{
- return xfs_calc_write_reservation(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)
-{
- /*
- * The following transactions are logged in physical format and
- * require a permanent reservation on space.
- */
- resp->tr_write.tr_logres = xfs_calc_write_reservation(mp);
- resp->tr_write.tr_logcount = XFS_WRITE_LOG_COUNT;
- resp->tr_write.tr_logflags |= XFS_TRANS_PERM_LOG_RES;
-
- resp->tr_itruncate.tr_logres = xfs_calc_itruncate_reservation(mp);
- resp->tr_itruncate.tr_logcount = XFS_ITRUNCATE_LOG_COUNT;
- resp->tr_itruncate.tr_logflags |= XFS_TRANS_PERM_LOG_RES;
-
- resp->tr_rename.tr_logres = xfs_calc_rename_reservation(mp);
- resp->tr_rename.tr_logcount = XFS_RENAME_LOG_COUNT;
- resp->tr_rename.tr_logflags |= XFS_TRANS_PERM_LOG_RES;
-
- resp->tr_link.tr_logres = xfs_calc_link_reservation(mp);
- resp->tr_link.tr_logcount = XFS_LINK_LOG_COUNT;
- resp->tr_link.tr_logflags |= XFS_TRANS_PERM_LOG_RES;
-
- resp->tr_remove.tr_logres = xfs_calc_remove_reservation(mp);
- resp->tr_remove.tr_logcount = XFS_REMOVE_LOG_COUNT;
- resp->tr_remove.tr_logflags |= XFS_TRANS_PERM_LOG_RES;
-
- resp->tr_symlink.tr_logres = xfs_calc_symlink_reservation(mp);
- resp->tr_symlink.tr_logcount = XFS_SYMLINK_LOG_COUNT;
- resp->tr_symlink.tr_logflags |= XFS_TRANS_PERM_LOG_RES;
-
- resp->tr_create.tr_logres = xfs_calc_create_reservation(mp);
- resp->tr_create.tr_logcount = XFS_CREATE_LOG_COUNT;
- resp->tr_create.tr_logflags |= XFS_TRANS_PERM_LOG_RES;
-
- resp->tr_create_tmpfile.tr_logres =
- xfs_calc_create_tmpfile_reservation(mp);
- resp->tr_create_tmpfile.tr_logcount = XFS_CREATE_TMPFILE_LOG_COUNT;
- resp->tr_create_tmpfile.tr_logflags |= XFS_TRANS_PERM_LOG_RES;
-
- resp->tr_mkdir.tr_logres = xfs_calc_mkdir_reservation(mp);
- resp->tr_mkdir.tr_logcount = XFS_MKDIR_LOG_COUNT;
- resp->tr_mkdir.tr_logflags |= XFS_TRANS_PERM_LOG_RES;
-
- resp->tr_ifree.tr_logres = xfs_calc_ifree_reservation(mp);
- resp->tr_ifree.tr_logcount = XFS_INACTIVE_LOG_COUNT;
- resp->tr_ifree.tr_logflags |= XFS_TRANS_PERM_LOG_RES;
-
- resp->tr_addafork.tr_logres = xfs_calc_addafork_reservation(mp);
- resp->tr_addafork.tr_logcount = XFS_ADDAFORK_LOG_COUNT;
- resp->tr_addafork.tr_logflags |= XFS_TRANS_PERM_LOG_RES;
-
- resp->tr_attrinval.tr_logres = xfs_calc_attrinval_reservation(mp);
- resp->tr_attrinval.tr_logcount = XFS_ATTRINVAL_LOG_COUNT;
- resp->tr_attrinval.tr_logflags |= XFS_TRANS_PERM_LOG_RES;
-
- resp->tr_attrsetm.tr_logres = xfs_calc_attrsetm_reservation(mp);
- resp->tr_attrsetm.tr_logcount = XFS_ATTRSET_LOG_COUNT;
- resp->tr_attrsetm.tr_logflags |= XFS_TRANS_PERM_LOG_RES;
-
- resp->tr_attrrm.tr_logres = xfs_calc_attrrm_reservation(mp);
- resp->tr_attrrm.tr_logcount = XFS_ATTRRM_LOG_COUNT;
- resp->tr_attrrm.tr_logflags |= XFS_TRANS_PERM_LOG_RES;
-
- resp->tr_growrtalloc.tr_logres = xfs_calc_growrtalloc_reservation(mp);
- resp->tr_growrtalloc.tr_logcount = XFS_DEFAULT_PERM_LOG_COUNT;
- resp->tr_growrtalloc.tr_logflags |= XFS_TRANS_PERM_LOG_RES;
-
- resp->tr_qm_dqalloc.tr_logres = xfs_calc_qm_dqalloc_reservation(mp);
- resp->tr_qm_dqalloc.tr_logcount = XFS_WRITE_LOG_COUNT;
- resp->tr_qm_dqalloc.tr_logflags |= XFS_TRANS_PERM_LOG_RES;
-
- /*
- * The following transactions are logged in logical format with
- * a default log count.
- */
- resp->tr_qm_sbchange.tr_logres = xfs_calc_qm_sbchange_reservation(mp);
- resp->tr_qm_sbchange.tr_logcount = XFS_DEFAULT_LOG_COUNT;
-
- resp->tr_qm_setqlim.tr_logres = xfs_calc_qm_setqlim_reservation(mp);
- resp->tr_qm_setqlim.tr_logcount = XFS_DEFAULT_LOG_COUNT;
-
- resp->tr_qm_quotaoff.tr_logres = xfs_calc_qm_quotaoff_reservation(mp);
- resp->tr_qm_quotaoff.tr_logcount = XFS_DEFAULT_LOG_COUNT;
-
- resp->tr_qm_equotaoff.tr_logres =
- xfs_calc_qm_quotaoff_end_reservation(mp);
- resp->tr_qm_equotaoff.tr_logcount = XFS_DEFAULT_LOG_COUNT;
-
- resp->tr_sb.tr_logres = xfs_calc_sb_reservation(mp);
- resp->tr_sb.tr_logcount = XFS_DEFAULT_LOG_COUNT;
-
- /* The following transaction are logged in logical format */
- resp->tr_ichange.tr_logres = xfs_calc_ichange_reservation(mp);
- resp->tr_growdata.tr_logres = xfs_calc_growdata_reservation(mp);
- resp->tr_fsyncts.tr_logres = xfs_calc_swrite_reservation(mp);
- resp->tr_writeid.tr_logres = xfs_calc_writeid_reservation(mp);
- resp->tr_attrsetrt.tr_logres = xfs_calc_attrsetrt_reservation(mp);
- resp->tr_clearagi.tr_logres = xfs_calc_clear_agi_bucket_reservation(mp);
- resp->tr_growrtzero.tr_logres = xfs_calc_growrtzero_reservation(mp);
- resp->tr_growrtfree.tr_logres = xfs_calc_growrtfree_reservation(mp);
-}