11da177e4SLinus Torvalds /* 27b718769SNathan Scott * Copyright (c) 2000-2003,2005 Silicon Graphics, Inc. 3e98c414fSChristoph Hellwig * Copyright (C) 2010 Red Hat, Inc. 47b718769SNathan Scott * All Rights Reserved. 51da177e4SLinus Torvalds * 67b718769SNathan Scott * This program is free software; you can redistribute it and/or 77b718769SNathan Scott * modify it under the terms of the GNU General Public License as 81da177e4SLinus Torvalds * published by the Free Software Foundation. 91da177e4SLinus Torvalds * 107b718769SNathan Scott * This program is distributed in the hope that it would be useful, 117b718769SNathan Scott * but WITHOUT ANY WARRANTY; without even the implied warranty of 127b718769SNathan Scott * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 137b718769SNathan Scott * GNU General Public License for more details. 141da177e4SLinus Torvalds * 157b718769SNathan Scott * You should have received a copy of the GNU General Public License 167b718769SNathan Scott * along with this program; if not, write the Free Software Foundation, 177b718769SNathan Scott * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA 181da177e4SLinus Torvalds */ 191da177e4SLinus Torvalds #include "xfs.h" 20a844f451SNathan Scott #include "xfs_fs.h" 211da177e4SLinus Torvalds #include "xfs_types.h" 22a844f451SNathan Scott #include "xfs_bit.h" 231da177e4SLinus Torvalds #include "xfs_log.h" 24a844f451SNathan Scott #include "xfs_inum.h" 251da177e4SLinus Torvalds #include "xfs_trans.h" 261da177e4SLinus Torvalds #include "xfs_sb.h" 271da177e4SLinus Torvalds #include "xfs_ag.h" 281da177e4SLinus Torvalds #include "xfs_mount.h" 291da177e4SLinus Torvalds #include "xfs_error.h" 30a844f451SNathan Scott #include "xfs_da_btree.h" 311da177e4SLinus Torvalds #include "xfs_bmap_btree.h" 32a844f451SNathan Scott #include "xfs_alloc_btree.h" 331da177e4SLinus Torvalds #include "xfs_ialloc_btree.h" 34a844f451SNathan Scott #include "xfs_dinode.h" 35a844f451SNathan Scott #include "xfs_inode.h" 361da177e4SLinus Torvalds #include "xfs_btree.h" 371da177e4SLinus Torvalds #include "xfs_ialloc.h" 381da177e4SLinus Torvalds #include "xfs_alloc.h" 391da177e4SLinus Torvalds #include "xfs_bmap.h" 401da177e4SLinus Torvalds #include "xfs_quota.h" 41a844f451SNathan Scott #include "xfs_trans_priv.h" 421da177e4SLinus Torvalds #include "xfs_trans_space.h" 43322ff6b8SNiv Sardi #include "xfs_inode_item.h" 44ed3b4d6cSDave Chinner #include "xfs_trace.h" 451da177e4SLinus Torvalds 461da177e4SLinus Torvalds kmem_zone_t *xfs_trans_zone; 47e98c414fSChristoph Hellwig kmem_zone_t *xfs_log_item_desc_zone; 481da177e4SLinus Torvalds 49025101dcSChristoph Hellwig 501da177e4SLinus Torvalds /* 51025101dcSChristoph Hellwig * Various log reservation values. 52025101dcSChristoph Hellwig * 53025101dcSChristoph Hellwig * These are based on the size of the file system block because that is what 54025101dcSChristoph Hellwig * most transactions manipulate. Each adds in an additional 128 bytes per 55025101dcSChristoph Hellwig * item logged to try to account for the overhead of the transaction mechanism. 56025101dcSChristoph Hellwig * 57025101dcSChristoph Hellwig * Note: Most of the reservations underestimate the number of allocation 58025101dcSChristoph Hellwig * groups into which they could free extents in the xfs_bmap_finish() call. 59025101dcSChristoph Hellwig * This is because the number in the worst case is quite high and quite 60025101dcSChristoph Hellwig * unusual. In order to fix this we need to change xfs_bmap_finish() to free 61025101dcSChristoph Hellwig * extents in only a single AG at a time. This will require changes to the 62025101dcSChristoph Hellwig * EFI code as well, however, so that the EFI for the extents not freed is 63025101dcSChristoph Hellwig * logged again in each transaction. See SGI PV #261917. 64025101dcSChristoph Hellwig * 65025101dcSChristoph Hellwig * Reservation functions here avoid a huge stack in xfs_trans_init due to 66025101dcSChristoph Hellwig * register overflow from temporaries in the calculations. 67025101dcSChristoph Hellwig */ 68025101dcSChristoph Hellwig 69025101dcSChristoph Hellwig 70025101dcSChristoph Hellwig /* 71025101dcSChristoph Hellwig * In a write transaction we can allocate a maximum of 2 72025101dcSChristoph Hellwig * extents. This gives: 73025101dcSChristoph Hellwig * the inode getting the new extents: inode size 74025101dcSChristoph Hellwig * the inode's bmap btree: max depth * block size 75025101dcSChristoph Hellwig * the agfs of the ags from which the extents are allocated: 2 * sector 76025101dcSChristoph Hellwig * the superblock free block counter: sector size 77025101dcSChristoph Hellwig * the allocation btrees: 2 exts * 2 trees * (2 * max depth - 1) * block size 78025101dcSChristoph Hellwig * And the bmap_finish transaction can free bmap blocks in a join: 79025101dcSChristoph Hellwig * the agfs of the ags containing the blocks: 2 * sector size 80025101dcSChristoph Hellwig * the agfls of the ags containing the blocks: 2 * sector size 81025101dcSChristoph Hellwig * the super block free block counter: sector size 82025101dcSChristoph Hellwig * the allocation btrees: 2 exts * 2 trees * (2 * max depth - 1) * block size 838f794055SNathan Scott */ 848f794055SNathan Scott STATIC uint 85025101dcSChristoph Hellwig xfs_calc_write_reservation( 86025101dcSChristoph Hellwig struct xfs_mount *mp) 878f794055SNathan Scott { 88025101dcSChristoph Hellwig return XFS_DQUOT_LOGRES(mp) + 89025101dcSChristoph Hellwig MAX((mp->m_sb.sb_inodesize + 90025101dcSChristoph Hellwig XFS_FSB_TO_B(mp, XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK)) + 91025101dcSChristoph Hellwig 2 * mp->m_sb.sb_sectsize + 92025101dcSChristoph Hellwig mp->m_sb.sb_sectsize + 93025101dcSChristoph Hellwig XFS_ALLOCFREE_LOG_RES(mp, 2) + 94025101dcSChristoph Hellwig 128 * (4 + XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK) + 95025101dcSChristoph Hellwig XFS_ALLOCFREE_LOG_COUNT(mp, 2))), 96025101dcSChristoph Hellwig (2 * mp->m_sb.sb_sectsize + 97025101dcSChristoph Hellwig 2 * mp->m_sb.sb_sectsize + 98025101dcSChristoph Hellwig mp->m_sb.sb_sectsize + 99025101dcSChristoph Hellwig XFS_ALLOCFREE_LOG_RES(mp, 2) + 100025101dcSChristoph Hellwig 128 * (5 + XFS_ALLOCFREE_LOG_COUNT(mp, 2)))); 1018f794055SNathan Scott } 1028f794055SNathan Scott 103025101dcSChristoph Hellwig /* 104025101dcSChristoph Hellwig * In truncating a file we free up to two extents at once. We can modify: 105025101dcSChristoph Hellwig * the inode being truncated: inode size 106025101dcSChristoph Hellwig * the inode's bmap btree: (max depth + 1) * block size 107025101dcSChristoph Hellwig * And the bmap_finish transaction can free the blocks and bmap blocks: 108025101dcSChristoph Hellwig * the agf for each of the ags: 4 * sector size 109025101dcSChristoph Hellwig * the agfl for each of the ags: 4 * sector size 110025101dcSChristoph Hellwig * the super block to reflect the freed blocks: sector size 111025101dcSChristoph Hellwig * worst case split in allocation btrees per extent assuming 4 extents: 112025101dcSChristoph Hellwig * 4 exts * 2 trees * (2 * max depth - 1) * block size 113025101dcSChristoph Hellwig * the inode btree: max depth * blocksize 114025101dcSChristoph Hellwig * the allocation btrees: 2 trees * (max depth - 1) * block size 115025101dcSChristoph Hellwig */ 1168f794055SNathan Scott STATIC uint 117025101dcSChristoph Hellwig xfs_calc_itruncate_reservation( 118025101dcSChristoph Hellwig struct xfs_mount *mp) 1198f794055SNathan Scott { 120025101dcSChristoph Hellwig return XFS_DQUOT_LOGRES(mp) + 121025101dcSChristoph Hellwig MAX((mp->m_sb.sb_inodesize + 122025101dcSChristoph Hellwig XFS_FSB_TO_B(mp, XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK) + 1) + 123025101dcSChristoph Hellwig 128 * (2 + XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK))), 124025101dcSChristoph Hellwig (4 * mp->m_sb.sb_sectsize + 125025101dcSChristoph Hellwig 4 * mp->m_sb.sb_sectsize + 126025101dcSChristoph Hellwig mp->m_sb.sb_sectsize + 127025101dcSChristoph Hellwig XFS_ALLOCFREE_LOG_RES(mp, 4) + 128025101dcSChristoph Hellwig 128 * (9 + XFS_ALLOCFREE_LOG_COUNT(mp, 4)) + 129025101dcSChristoph Hellwig 128 * 5 + 130025101dcSChristoph Hellwig XFS_ALLOCFREE_LOG_RES(mp, 1) + 131025101dcSChristoph Hellwig 128 * (2 + XFS_IALLOC_BLOCKS(mp) + mp->m_in_maxlevels + 132025101dcSChristoph Hellwig XFS_ALLOCFREE_LOG_COUNT(mp, 1)))); 1338f794055SNathan Scott } 1348f794055SNathan Scott 135025101dcSChristoph Hellwig /* 136025101dcSChristoph Hellwig * In renaming a files we can modify: 137025101dcSChristoph Hellwig * the four inodes involved: 4 * inode size 138025101dcSChristoph Hellwig * the two directory btrees: 2 * (max depth + v2) * dir block size 139025101dcSChristoph Hellwig * the two directory bmap btrees: 2 * max depth * block size 140025101dcSChristoph Hellwig * And the bmap_finish transaction can free dir and bmap blocks (two sets 141025101dcSChristoph Hellwig * of bmap blocks) giving: 142025101dcSChristoph Hellwig * the agf for the ags in which the blocks live: 3 * sector size 143025101dcSChristoph Hellwig * the agfl for the ags in which the blocks live: 3 * sector size 144025101dcSChristoph Hellwig * the superblock for the free block count: sector size 145025101dcSChristoph Hellwig * the allocation btrees: 3 exts * 2 trees * (2 * max depth - 1) * block size 146025101dcSChristoph Hellwig */ 1478f794055SNathan Scott STATIC uint 148025101dcSChristoph Hellwig xfs_calc_rename_reservation( 149025101dcSChristoph Hellwig struct xfs_mount *mp) 1508f794055SNathan Scott { 151025101dcSChristoph Hellwig return XFS_DQUOT_LOGRES(mp) + 152025101dcSChristoph Hellwig MAX((4 * mp->m_sb.sb_inodesize + 153025101dcSChristoph Hellwig 2 * XFS_DIROP_LOG_RES(mp) + 154025101dcSChristoph Hellwig 128 * (4 + 2 * XFS_DIROP_LOG_COUNT(mp))), 155025101dcSChristoph Hellwig (3 * mp->m_sb.sb_sectsize + 156025101dcSChristoph Hellwig 3 * mp->m_sb.sb_sectsize + 157025101dcSChristoph Hellwig mp->m_sb.sb_sectsize + 158025101dcSChristoph Hellwig XFS_ALLOCFREE_LOG_RES(mp, 3) + 159025101dcSChristoph Hellwig 128 * (7 + XFS_ALLOCFREE_LOG_COUNT(mp, 3)))); 1608f794055SNathan Scott } 1618f794055SNathan Scott 162025101dcSChristoph Hellwig /* 163025101dcSChristoph Hellwig * For creating a link to an inode: 164025101dcSChristoph Hellwig * the parent directory inode: inode size 165025101dcSChristoph Hellwig * the linked inode: inode size 166025101dcSChristoph Hellwig * the directory btree could split: (max depth + v2) * dir block size 167025101dcSChristoph Hellwig * the directory bmap btree could join or split: (max depth + v2) * blocksize 168025101dcSChristoph Hellwig * And the bmap_finish transaction can free some bmap blocks giving: 169025101dcSChristoph Hellwig * the agf for the ag in which the blocks live: sector size 170025101dcSChristoph Hellwig * the agfl for the ag in which the blocks live: sector size 171025101dcSChristoph Hellwig * the superblock for the free block count: sector size 172025101dcSChristoph Hellwig * the allocation btrees: 2 trees * (2 * max depth - 1) * block size 173025101dcSChristoph Hellwig */ 1748f794055SNathan Scott STATIC uint 175025101dcSChristoph Hellwig xfs_calc_link_reservation( 176025101dcSChristoph Hellwig struct xfs_mount *mp) 1778f794055SNathan Scott { 178025101dcSChristoph Hellwig return XFS_DQUOT_LOGRES(mp) + 179025101dcSChristoph Hellwig MAX((mp->m_sb.sb_inodesize + 180025101dcSChristoph Hellwig mp->m_sb.sb_inodesize + 181025101dcSChristoph Hellwig XFS_DIROP_LOG_RES(mp) + 182025101dcSChristoph Hellwig 128 * (2 + XFS_DIROP_LOG_COUNT(mp))), 183025101dcSChristoph Hellwig (mp->m_sb.sb_sectsize + 184025101dcSChristoph Hellwig mp->m_sb.sb_sectsize + 185025101dcSChristoph Hellwig mp->m_sb.sb_sectsize + 186025101dcSChristoph Hellwig XFS_ALLOCFREE_LOG_RES(mp, 1) + 187025101dcSChristoph Hellwig 128 * (3 + XFS_ALLOCFREE_LOG_COUNT(mp, 1)))); 1888f794055SNathan Scott } 1898f794055SNathan Scott 190025101dcSChristoph Hellwig /* 191025101dcSChristoph Hellwig * For removing a directory entry we can modify: 192025101dcSChristoph Hellwig * the parent directory inode: inode size 193025101dcSChristoph Hellwig * the removed inode: inode size 194025101dcSChristoph Hellwig * the directory btree could join: (max depth + v2) * dir block size 195025101dcSChristoph Hellwig * the directory bmap btree could join or split: (max depth + v2) * blocksize 196025101dcSChristoph Hellwig * And the bmap_finish transaction can free the dir and bmap blocks giving: 197025101dcSChristoph Hellwig * the agf for the ag in which the blocks live: 2 * sector size 198025101dcSChristoph Hellwig * the agfl for the ag in which the blocks live: 2 * sector size 199025101dcSChristoph Hellwig * the superblock for the free block count: sector size 200025101dcSChristoph Hellwig * the allocation btrees: 2 exts * 2 trees * (2 * max depth - 1) * block size 201025101dcSChristoph Hellwig */ 2028f794055SNathan Scott STATIC uint 203025101dcSChristoph Hellwig xfs_calc_remove_reservation( 204025101dcSChristoph Hellwig struct xfs_mount *mp) 2058f794055SNathan Scott { 206025101dcSChristoph Hellwig return XFS_DQUOT_LOGRES(mp) + 207025101dcSChristoph Hellwig MAX((mp->m_sb.sb_inodesize + 208025101dcSChristoph Hellwig mp->m_sb.sb_inodesize + 209025101dcSChristoph Hellwig XFS_DIROP_LOG_RES(mp) + 210025101dcSChristoph Hellwig 128 * (2 + XFS_DIROP_LOG_COUNT(mp))), 211025101dcSChristoph Hellwig (2 * mp->m_sb.sb_sectsize + 212025101dcSChristoph Hellwig 2 * mp->m_sb.sb_sectsize + 213025101dcSChristoph Hellwig mp->m_sb.sb_sectsize + 214025101dcSChristoph Hellwig XFS_ALLOCFREE_LOG_RES(mp, 2) + 215025101dcSChristoph Hellwig 128 * (5 + XFS_ALLOCFREE_LOG_COUNT(mp, 2)))); 2168f794055SNathan Scott } 2178f794055SNathan Scott 218025101dcSChristoph Hellwig /* 219025101dcSChristoph Hellwig * For symlink we can modify: 220025101dcSChristoph Hellwig * the parent directory inode: inode size 221025101dcSChristoph Hellwig * the new inode: inode size 222025101dcSChristoph Hellwig * the inode btree entry: 1 block 223025101dcSChristoph Hellwig * the directory btree: (max depth + v2) * dir block size 224025101dcSChristoph Hellwig * the directory inode's bmap btree: (max depth + v2) * block size 225025101dcSChristoph Hellwig * the blocks for the symlink: 1 kB 226025101dcSChristoph Hellwig * Or in the first xact we allocate some inodes giving: 227025101dcSChristoph Hellwig * the agi and agf of the ag getting the new inodes: 2 * sectorsize 228025101dcSChristoph Hellwig * the inode blocks allocated: XFS_IALLOC_BLOCKS * blocksize 229025101dcSChristoph Hellwig * the inode btree: max depth * blocksize 230025101dcSChristoph Hellwig * the allocation btrees: 2 trees * (2 * max depth - 1) * block size 231025101dcSChristoph Hellwig */ 2328f794055SNathan Scott STATIC uint 233025101dcSChristoph Hellwig xfs_calc_symlink_reservation( 234025101dcSChristoph Hellwig struct xfs_mount *mp) 2358f794055SNathan Scott { 236025101dcSChristoph Hellwig return XFS_DQUOT_LOGRES(mp) + 237025101dcSChristoph Hellwig MAX((mp->m_sb.sb_inodesize + 238025101dcSChristoph Hellwig mp->m_sb.sb_inodesize + 239025101dcSChristoph Hellwig XFS_FSB_TO_B(mp, 1) + 240025101dcSChristoph Hellwig XFS_DIROP_LOG_RES(mp) + 241025101dcSChristoph Hellwig 1024 + 242025101dcSChristoph Hellwig 128 * (4 + XFS_DIROP_LOG_COUNT(mp))), 243025101dcSChristoph Hellwig (2 * mp->m_sb.sb_sectsize + 244025101dcSChristoph Hellwig XFS_FSB_TO_B(mp, XFS_IALLOC_BLOCKS(mp)) + 245025101dcSChristoph Hellwig XFS_FSB_TO_B(mp, mp->m_in_maxlevels) + 246025101dcSChristoph Hellwig XFS_ALLOCFREE_LOG_RES(mp, 1) + 247025101dcSChristoph Hellwig 128 * (2 + XFS_IALLOC_BLOCKS(mp) + mp->m_in_maxlevels + 248025101dcSChristoph Hellwig XFS_ALLOCFREE_LOG_COUNT(mp, 1)))); 2498f794055SNathan Scott } 2508f794055SNathan Scott 251025101dcSChristoph Hellwig /* 252025101dcSChristoph Hellwig * For create we can modify: 253025101dcSChristoph Hellwig * the parent directory inode: inode size 254025101dcSChristoph Hellwig * the new inode: inode size 255025101dcSChristoph Hellwig * the inode btree entry: block size 256025101dcSChristoph Hellwig * the superblock for the nlink flag: sector size 257025101dcSChristoph Hellwig * the directory btree: (max depth + v2) * dir block size 258025101dcSChristoph Hellwig * the directory inode's bmap btree: (max depth + v2) * block size 259025101dcSChristoph Hellwig * Or in the first xact we allocate some inodes giving: 260025101dcSChristoph Hellwig * the agi and agf of the ag getting the new inodes: 2 * sectorsize 261025101dcSChristoph Hellwig * the superblock for the nlink flag: sector size 262025101dcSChristoph Hellwig * the inode blocks allocated: XFS_IALLOC_BLOCKS * blocksize 263025101dcSChristoph Hellwig * the inode btree: max depth * blocksize 264025101dcSChristoph Hellwig * the allocation btrees: 2 trees * (max depth - 1) * block size 265025101dcSChristoph Hellwig */ 2668f794055SNathan Scott STATIC uint 267025101dcSChristoph Hellwig xfs_calc_create_reservation( 268025101dcSChristoph Hellwig struct xfs_mount *mp) 2698f794055SNathan Scott { 270025101dcSChristoph Hellwig return XFS_DQUOT_LOGRES(mp) + 271025101dcSChristoph Hellwig MAX((mp->m_sb.sb_inodesize + 272025101dcSChristoph Hellwig mp->m_sb.sb_inodesize + 273025101dcSChristoph Hellwig mp->m_sb.sb_sectsize + 274025101dcSChristoph Hellwig XFS_FSB_TO_B(mp, 1) + 275025101dcSChristoph Hellwig XFS_DIROP_LOG_RES(mp) + 276025101dcSChristoph Hellwig 128 * (3 + XFS_DIROP_LOG_COUNT(mp))), 277025101dcSChristoph Hellwig (3 * mp->m_sb.sb_sectsize + 278025101dcSChristoph Hellwig XFS_FSB_TO_B(mp, XFS_IALLOC_BLOCKS(mp)) + 279025101dcSChristoph Hellwig XFS_FSB_TO_B(mp, mp->m_in_maxlevels) + 280025101dcSChristoph Hellwig XFS_ALLOCFREE_LOG_RES(mp, 1) + 281025101dcSChristoph Hellwig 128 * (2 + XFS_IALLOC_BLOCKS(mp) + mp->m_in_maxlevels + 282025101dcSChristoph Hellwig XFS_ALLOCFREE_LOG_COUNT(mp, 1)))); 2838f794055SNathan Scott } 2848f794055SNathan Scott 285025101dcSChristoph Hellwig /* 286025101dcSChristoph Hellwig * Making a new directory is the same as creating a new file. 287025101dcSChristoph Hellwig */ 2888f794055SNathan Scott STATIC uint 289025101dcSChristoph Hellwig xfs_calc_mkdir_reservation( 290025101dcSChristoph Hellwig struct xfs_mount *mp) 2918f794055SNathan Scott { 292025101dcSChristoph Hellwig return xfs_calc_create_reservation(mp); 2938f794055SNathan Scott } 2948f794055SNathan Scott 295025101dcSChristoph Hellwig /* 296025101dcSChristoph Hellwig * In freeing an inode we can modify: 297025101dcSChristoph Hellwig * the inode being freed: inode size 298025101dcSChristoph Hellwig * the super block free inode counter: sector size 299025101dcSChristoph Hellwig * the agi hash list and counters: sector size 300025101dcSChristoph Hellwig * the inode btree entry: block size 301025101dcSChristoph Hellwig * the on disk inode before ours in the agi hash list: inode cluster size 302025101dcSChristoph Hellwig * the inode btree: max depth * blocksize 303025101dcSChristoph Hellwig * the allocation btrees: 2 trees * (max depth - 1) * block size 304025101dcSChristoph Hellwig */ 3058f794055SNathan Scott STATIC uint 306025101dcSChristoph Hellwig xfs_calc_ifree_reservation( 307025101dcSChristoph Hellwig struct xfs_mount *mp) 3088f794055SNathan Scott { 309025101dcSChristoph Hellwig return XFS_DQUOT_LOGRES(mp) + 310025101dcSChristoph Hellwig mp->m_sb.sb_inodesize + 311025101dcSChristoph Hellwig mp->m_sb.sb_sectsize + 312025101dcSChristoph Hellwig mp->m_sb.sb_sectsize + 313025101dcSChristoph Hellwig XFS_FSB_TO_B(mp, 1) + 314025101dcSChristoph Hellwig MAX((__uint16_t)XFS_FSB_TO_B(mp, 1), 315025101dcSChristoph Hellwig XFS_INODE_CLUSTER_SIZE(mp)) + 316025101dcSChristoph Hellwig 128 * 5 + 317025101dcSChristoph Hellwig XFS_ALLOCFREE_LOG_RES(mp, 1) + 318025101dcSChristoph Hellwig 128 * (2 + XFS_IALLOC_BLOCKS(mp) + mp->m_in_maxlevels + 319025101dcSChristoph Hellwig XFS_ALLOCFREE_LOG_COUNT(mp, 1)); 3208f794055SNathan Scott } 3218f794055SNathan Scott 322025101dcSChristoph Hellwig /* 323025101dcSChristoph Hellwig * When only changing the inode we log the inode and possibly the superblock 324025101dcSChristoph Hellwig * We also add a bit of slop for the transaction stuff. 325025101dcSChristoph Hellwig */ 3268f794055SNathan Scott STATIC uint 327025101dcSChristoph Hellwig xfs_calc_ichange_reservation( 328025101dcSChristoph Hellwig struct xfs_mount *mp) 3298f794055SNathan Scott { 330025101dcSChristoph Hellwig return XFS_DQUOT_LOGRES(mp) + 331025101dcSChristoph Hellwig mp->m_sb.sb_inodesize + 332025101dcSChristoph Hellwig mp->m_sb.sb_sectsize + 333025101dcSChristoph Hellwig 512; 334025101dcSChristoph Hellwig 3358f794055SNathan Scott } 3368f794055SNathan Scott 337025101dcSChristoph Hellwig /* 338025101dcSChristoph Hellwig * Growing the data section of the filesystem. 339025101dcSChristoph Hellwig * superblock 340025101dcSChristoph Hellwig * agi and agf 341025101dcSChristoph Hellwig * allocation btrees 342025101dcSChristoph Hellwig */ 3438f794055SNathan Scott STATIC uint 344025101dcSChristoph Hellwig xfs_calc_growdata_reservation( 345025101dcSChristoph Hellwig struct xfs_mount *mp) 3468f794055SNathan Scott { 347025101dcSChristoph Hellwig return mp->m_sb.sb_sectsize * 3 + 348025101dcSChristoph Hellwig XFS_ALLOCFREE_LOG_RES(mp, 1) + 349025101dcSChristoph Hellwig 128 * (3 + XFS_ALLOCFREE_LOG_COUNT(mp, 1)); 3508f794055SNathan Scott } 3518f794055SNathan Scott 352025101dcSChristoph Hellwig /* 353025101dcSChristoph Hellwig * Growing the rt section of the filesystem. 354025101dcSChristoph Hellwig * In the first set of transactions (ALLOC) we allocate space to the 355025101dcSChristoph Hellwig * bitmap or summary files. 356025101dcSChristoph Hellwig * superblock: sector size 357025101dcSChristoph Hellwig * agf of the ag from which the extent is allocated: sector size 358025101dcSChristoph Hellwig * bmap btree for bitmap/summary inode: max depth * blocksize 359025101dcSChristoph Hellwig * bitmap/summary inode: inode size 360025101dcSChristoph Hellwig * allocation btrees for 1 block alloc: 2 * (2 * maxdepth - 1) * blocksize 361025101dcSChristoph Hellwig */ 3628f794055SNathan Scott STATIC uint 363025101dcSChristoph Hellwig xfs_calc_growrtalloc_reservation( 364025101dcSChristoph Hellwig struct xfs_mount *mp) 3658f794055SNathan Scott { 366025101dcSChristoph Hellwig return 2 * mp->m_sb.sb_sectsize + 367025101dcSChristoph Hellwig XFS_FSB_TO_B(mp, XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK)) + 368025101dcSChristoph Hellwig mp->m_sb.sb_inodesize + 369025101dcSChristoph Hellwig XFS_ALLOCFREE_LOG_RES(mp, 1) + 370025101dcSChristoph Hellwig 128 * (3 + XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK) + 371025101dcSChristoph Hellwig XFS_ALLOCFREE_LOG_COUNT(mp, 1)); 3728f794055SNathan Scott } 3738f794055SNathan Scott 374025101dcSChristoph Hellwig /* 375025101dcSChristoph Hellwig * Growing the rt section of the filesystem. 376025101dcSChristoph Hellwig * In the second set of transactions (ZERO) we zero the new metadata blocks. 377025101dcSChristoph Hellwig * one bitmap/summary block: blocksize 378025101dcSChristoph Hellwig */ 3798f794055SNathan Scott STATIC uint 380025101dcSChristoph Hellwig xfs_calc_growrtzero_reservation( 381025101dcSChristoph Hellwig struct xfs_mount *mp) 3828f794055SNathan Scott { 383025101dcSChristoph Hellwig return mp->m_sb.sb_blocksize + 128; 3848f794055SNathan Scott } 3858f794055SNathan Scott 386025101dcSChristoph Hellwig /* 387025101dcSChristoph Hellwig * Growing the rt section of the filesystem. 388025101dcSChristoph Hellwig * In the third set of transactions (FREE) we update metadata without 389025101dcSChristoph Hellwig * allocating any new blocks. 390025101dcSChristoph Hellwig * superblock: sector size 391025101dcSChristoph Hellwig * bitmap inode: inode size 392025101dcSChristoph Hellwig * summary inode: inode size 393025101dcSChristoph Hellwig * one bitmap block: blocksize 394025101dcSChristoph Hellwig * summary blocks: new summary size 395025101dcSChristoph Hellwig */ 3968f794055SNathan Scott STATIC uint 397025101dcSChristoph Hellwig xfs_calc_growrtfree_reservation( 398025101dcSChristoph Hellwig struct xfs_mount *mp) 3998f794055SNathan Scott { 400025101dcSChristoph Hellwig return mp->m_sb.sb_sectsize + 401025101dcSChristoph Hellwig 2 * mp->m_sb.sb_inodesize + 402025101dcSChristoph Hellwig mp->m_sb.sb_blocksize + 403025101dcSChristoph Hellwig mp->m_rsumsize + 404025101dcSChristoph Hellwig 128 * 5; 4058f794055SNathan Scott } 4068f794055SNathan Scott 407025101dcSChristoph Hellwig /* 408025101dcSChristoph Hellwig * Logging the inode modification timestamp on a synchronous write. 409025101dcSChristoph Hellwig * inode 410025101dcSChristoph Hellwig */ 4118f794055SNathan Scott STATIC uint 412025101dcSChristoph Hellwig xfs_calc_swrite_reservation( 413025101dcSChristoph Hellwig struct xfs_mount *mp) 4148f794055SNathan Scott { 415025101dcSChristoph Hellwig return mp->m_sb.sb_inodesize + 128; 4168f794055SNathan Scott } 4178f794055SNathan Scott 418025101dcSChristoph Hellwig /* 419025101dcSChristoph Hellwig * Logging the inode mode bits when writing a setuid/setgid file 420025101dcSChristoph Hellwig * inode 421025101dcSChristoph Hellwig */ 4228f794055SNathan Scott STATIC uint 4238f794055SNathan Scott xfs_calc_writeid_reservation(xfs_mount_t *mp) 4248f794055SNathan Scott { 425025101dcSChristoph Hellwig return mp->m_sb.sb_inodesize + 128; 4268f794055SNathan Scott } 4278f794055SNathan Scott 428025101dcSChristoph Hellwig /* 429025101dcSChristoph Hellwig * Converting the inode from non-attributed to attributed. 430025101dcSChristoph Hellwig * the inode being converted: inode size 431025101dcSChristoph Hellwig * agf block and superblock (for block allocation) 432025101dcSChristoph Hellwig * the new block (directory sized) 433025101dcSChristoph Hellwig * bmap blocks for the new directory block 434025101dcSChristoph Hellwig * allocation btrees 435025101dcSChristoph Hellwig */ 4368f794055SNathan Scott STATIC uint 437025101dcSChristoph Hellwig xfs_calc_addafork_reservation( 438025101dcSChristoph Hellwig struct xfs_mount *mp) 4398f794055SNathan Scott { 440025101dcSChristoph Hellwig return XFS_DQUOT_LOGRES(mp) + 441025101dcSChristoph Hellwig mp->m_sb.sb_inodesize + 442025101dcSChristoph Hellwig mp->m_sb.sb_sectsize * 2 + 443025101dcSChristoph Hellwig mp->m_dirblksize + 444025101dcSChristoph Hellwig XFS_FSB_TO_B(mp, XFS_DAENTER_BMAP1B(mp, XFS_DATA_FORK) + 1) + 445025101dcSChristoph Hellwig XFS_ALLOCFREE_LOG_RES(mp, 1) + 446025101dcSChristoph Hellwig 128 * (4 + XFS_DAENTER_BMAP1B(mp, XFS_DATA_FORK) + 1 + 447025101dcSChristoph Hellwig XFS_ALLOCFREE_LOG_COUNT(mp, 1)); 4488f794055SNathan Scott } 4498f794055SNathan Scott 450025101dcSChristoph Hellwig /* 451025101dcSChristoph Hellwig * Removing the attribute fork of a file 452025101dcSChristoph Hellwig * the inode being truncated: inode size 453025101dcSChristoph Hellwig * the inode's bmap btree: max depth * block size 454025101dcSChristoph Hellwig * And the bmap_finish transaction can free the blocks and bmap blocks: 455025101dcSChristoph Hellwig * the agf for each of the ags: 4 * sector size 456025101dcSChristoph Hellwig * the agfl for each of the ags: 4 * sector size 457025101dcSChristoph Hellwig * the super block to reflect the freed blocks: sector size 458025101dcSChristoph Hellwig * worst case split in allocation btrees per extent assuming 4 extents: 459025101dcSChristoph Hellwig * 4 exts * 2 trees * (2 * max depth - 1) * block size 460025101dcSChristoph Hellwig */ 4618f794055SNathan Scott STATIC uint 462025101dcSChristoph Hellwig xfs_calc_attrinval_reservation( 463025101dcSChristoph Hellwig struct xfs_mount *mp) 4648f794055SNathan Scott { 465025101dcSChristoph Hellwig return MAX((mp->m_sb.sb_inodesize + 466025101dcSChristoph Hellwig XFS_FSB_TO_B(mp, XFS_BM_MAXLEVELS(mp, XFS_ATTR_FORK)) + 467025101dcSChristoph Hellwig 128 * (1 + XFS_BM_MAXLEVELS(mp, XFS_ATTR_FORK))), 468025101dcSChristoph Hellwig (4 * mp->m_sb.sb_sectsize + 469025101dcSChristoph Hellwig 4 * mp->m_sb.sb_sectsize + 470025101dcSChristoph Hellwig mp->m_sb.sb_sectsize + 471025101dcSChristoph Hellwig XFS_ALLOCFREE_LOG_RES(mp, 4) + 472025101dcSChristoph Hellwig 128 * (9 + XFS_ALLOCFREE_LOG_COUNT(mp, 4)))); 4738f794055SNathan Scott } 4748f794055SNathan Scott 475025101dcSChristoph Hellwig /* 476025101dcSChristoph Hellwig * Setting an attribute. 477025101dcSChristoph Hellwig * the inode getting the attribute 478025101dcSChristoph Hellwig * the superblock for allocations 479025101dcSChristoph Hellwig * the agfs extents are allocated from 480025101dcSChristoph Hellwig * the attribute btree * max depth 481025101dcSChristoph Hellwig * the inode allocation btree 482025101dcSChristoph Hellwig * Since attribute transaction space is dependent on the size of the attribute, 483025101dcSChristoph Hellwig * the calculation is done partially at mount time and partially at runtime. 484025101dcSChristoph Hellwig */ 4858f794055SNathan Scott STATIC uint 486025101dcSChristoph Hellwig xfs_calc_attrset_reservation( 487025101dcSChristoph Hellwig struct xfs_mount *mp) 4888f794055SNathan Scott { 489025101dcSChristoph Hellwig return XFS_DQUOT_LOGRES(mp) + 490025101dcSChristoph Hellwig mp->m_sb.sb_inodesize + 491025101dcSChristoph Hellwig mp->m_sb.sb_sectsize + 492025101dcSChristoph Hellwig XFS_FSB_TO_B(mp, XFS_DA_NODE_MAXDEPTH) + 493025101dcSChristoph Hellwig 128 * (2 + XFS_DA_NODE_MAXDEPTH); 4948f794055SNathan Scott } 4958f794055SNathan Scott 496025101dcSChristoph Hellwig /* 497025101dcSChristoph Hellwig * Removing an attribute. 498025101dcSChristoph Hellwig * the inode: inode size 499025101dcSChristoph Hellwig * the attribute btree could join: max depth * block size 500025101dcSChristoph Hellwig * the inode bmap btree could join or split: max depth * block size 501025101dcSChristoph Hellwig * And the bmap_finish transaction can free the attr blocks freed giving: 502025101dcSChristoph Hellwig * the agf for the ag in which the blocks live: 2 * sector size 503025101dcSChristoph Hellwig * the agfl for the ag in which the blocks live: 2 * sector size 504025101dcSChristoph Hellwig * the superblock for the free block count: sector size 505025101dcSChristoph Hellwig * the allocation btrees: 2 exts * 2 trees * (2 * max depth - 1) * block size 506025101dcSChristoph Hellwig */ 5078f794055SNathan Scott STATIC uint 508025101dcSChristoph Hellwig xfs_calc_attrrm_reservation( 509025101dcSChristoph Hellwig struct xfs_mount *mp) 5108f794055SNathan Scott { 511025101dcSChristoph Hellwig return XFS_DQUOT_LOGRES(mp) + 512025101dcSChristoph Hellwig MAX((mp->m_sb.sb_inodesize + 513025101dcSChristoph Hellwig XFS_FSB_TO_B(mp, XFS_DA_NODE_MAXDEPTH) + 514025101dcSChristoph Hellwig XFS_FSB_TO_B(mp, XFS_BM_MAXLEVELS(mp, XFS_ATTR_FORK)) + 515025101dcSChristoph Hellwig 128 * (1 + XFS_DA_NODE_MAXDEPTH + 516025101dcSChristoph Hellwig XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK))), 517025101dcSChristoph Hellwig (2 * mp->m_sb.sb_sectsize + 518025101dcSChristoph Hellwig 2 * mp->m_sb.sb_sectsize + 519025101dcSChristoph Hellwig mp->m_sb.sb_sectsize + 520025101dcSChristoph Hellwig XFS_ALLOCFREE_LOG_RES(mp, 2) + 521025101dcSChristoph Hellwig 128 * (5 + XFS_ALLOCFREE_LOG_COUNT(mp, 2)))); 5228f794055SNathan Scott } 5238f794055SNathan Scott 524025101dcSChristoph Hellwig /* 525025101dcSChristoph Hellwig * Clearing a bad agino number in an agi hash bucket. 526025101dcSChristoph Hellwig */ 5278f794055SNathan Scott STATIC uint 528025101dcSChristoph Hellwig xfs_calc_clear_agi_bucket_reservation( 529025101dcSChristoph Hellwig struct xfs_mount *mp) 5308f794055SNathan Scott { 531025101dcSChristoph Hellwig return mp->m_sb.sb_sectsize + 128; 5328f794055SNathan Scott } 5338f794055SNathan Scott 5348f794055SNathan Scott /* 5351da177e4SLinus Torvalds * Initialize the precomputed transaction reservation values 5361da177e4SLinus Torvalds * in the mount structure. 5371da177e4SLinus Torvalds */ 5381da177e4SLinus Torvalds void 5391da177e4SLinus Torvalds xfs_trans_init( 540025101dcSChristoph Hellwig struct xfs_mount *mp) 5411da177e4SLinus Torvalds { 542025101dcSChristoph Hellwig struct xfs_trans_reservations *resp = &mp->m_reservations; 5431da177e4SLinus Torvalds 5448f794055SNathan Scott resp->tr_write = xfs_calc_write_reservation(mp); 5458f794055SNathan Scott resp->tr_itruncate = xfs_calc_itruncate_reservation(mp); 5468f794055SNathan Scott resp->tr_rename = xfs_calc_rename_reservation(mp); 5478f794055SNathan Scott resp->tr_link = xfs_calc_link_reservation(mp); 5488f794055SNathan Scott resp->tr_remove = xfs_calc_remove_reservation(mp); 5498f794055SNathan Scott resp->tr_symlink = xfs_calc_symlink_reservation(mp); 5508f794055SNathan Scott resp->tr_create = xfs_calc_create_reservation(mp); 5518f794055SNathan Scott resp->tr_mkdir = xfs_calc_mkdir_reservation(mp); 5528f794055SNathan Scott resp->tr_ifree = xfs_calc_ifree_reservation(mp); 5538f794055SNathan Scott resp->tr_ichange = xfs_calc_ichange_reservation(mp); 5548f794055SNathan Scott resp->tr_growdata = xfs_calc_growdata_reservation(mp); 5558f794055SNathan Scott resp->tr_swrite = xfs_calc_swrite_reservation(mp); 5568f794055SNathan Scott resp->tr_writeid = xfs_calc_writeid_reservation(mp); 5578f794055SNathan Scott resp->tr_addafork = xfs_calc_addafork_reservation(mp); 5588f794055SNathan Scott resp->tr_attrinval = xfs_calc_attrinval_reservation(mp); 5598f794055SNathan Scott resp->tr_attrset = xfs_calc_attrset_reservation(mp); 5608f794055SNathan Scott resp->tr_attrrm = xfs_calc_attrrm_reservation(mp); 5618f794055SNathan Scott resp->tr_clearagi = xfs_calc_clear_agi_bucket_reservation(mp); 5628f794055SNathan Scott resp->tr_growrtalloc = xfs_calc_growrtalloc_reservation(mp); 5638f794055SNathan Scott resp->tr_growrtzero = xfs_calc_growrtzero_reservation(mp); 5648f794055SNathan Scott resp->tr_growrtfree = xfs_calc_growrtfree_reservation(mp); 5651da177e4SLinus Torvalds } 5661da177e4SLinus Torvalds 5671da177e4SLinus Torvalds /* 5681da177e4SLinus Torvalds * This routine is called to allocate a transaction structure. 5691da177e4SLinus Torvalds * The type parameter indicates the type of the transaction. These 5701da177e4SLinus Torvalds * are enumerated in xfs_trans.h. 571b2ce3974SAlex Elder * 572b2ce3974SAlex Elder * Dynamically allocate the transaction structure from the transaction 573b2ce3974SAlex Elder * zone, initialize it, and return it to the caller. 5741da177e4SLinus Torvalds */ 575b2ce3974SAlex Elder xfs_trans_t * 576b2ce3974SAlex Elder xfs_trans_alloc( 577b2ce3974SAlex Elder xfs_mount_t *mp, 578b2ce3974SAlex Elder uint type) 5791da177e4SLinus Torvalds { 580b2ce3974SAlex Elder xfs_wait_for_freeze(mp, SB_FREEZE_TRANS); 581b2ce3974SAlex Elder return _xfs_trans_alloc(mp, type, KM_SLEEP); 582b2ce3974SAlex Elder } 583b2ce3974SAlex Elder 584b2ce3974SAlex Elder xfs_trans_t * 585b2ce3974SAlex Elder _xfs_trans_alloc( 586b2ce3974SAlex Elder xfs_mount_t *mp, 587b2ce3974SAlex Elder uint type, 588b2ce3974SAlex Elder uint memflags) 589b2ce3974SAlex Elder { 590b2ce3974SAlex Elder xfs_trans_t *tp; 5911da177e4SLinus Torvalds 59234327e13SNathan Scott atomic_inc(&mp->m_active_trans); 5931da177e4SLinus Torvalds 59480641dc6SChristoph Hellwig tp = kmem_zone_zalloc(xfs_trans_zone, memflags); 5951da177e4SLinus Torvalds tp->t_magic = XFS_TRANS_MAGIC; 5961da177e4SLinus Torvalds tp->t_type = type; 5971da177e4SLinus Torvalds tp->t_mountp = mp; 598e98c414fSChristoph Hellwig INIT_LIST_HEAD(&tp->t_items); 599ed3b4d6cSDave Chinner INIT_LIST_HEAD(&tp->t_busy); 60034327e13SNathan Scott return tp; 6011da177e4SLinus Torvalds } 6021da177e4SLinus Torvalds 6031da177e4SLinus Torvalds /* 604b1c1b5b6SDave Chinner * Free the transaction structure. If there is more clean up 605b1c1b5b6SDave Chinner * to do when the structure is freed, add it here. 606b1c1b5b6SDave Chinner */ 607b1c1b5b6SDave Chinner STATIC void 608b1c1b5b6SDave Chinner xfs_trans_free( 609ed3b4d6cSDave Chinner struct xfs_trans *tp) 610b1c1b5b6SDave Chinner { 6118a072a4dSChristoph Hellwig xfs_alloc_busy_sort(&tp->t_busy); 612e84661aaSChristoph Hellwig xfs_alloc_busy_clear(tp->t_mountp, &tp->t_busy, false); 613ed3b4d6cSDave Chinner 614b1c1b5b6SDave Chinner atomic_dec(&tp->t_mountp->m_active_trans); 615b1c1b5b6SDave Chinner xfs_trans_free_dqinfo(tp); 616b1c1b5b6SDave Chinner kmem_zone_free(xfs_trans_zone, tp); 617b1c1b5b6SDave Chinner } 618b1c1b5b6SDave Chinner 619b1c1b5b6SDave Chinner /* 6201da177e4SLinus Torvalds * This is called to create a new transaction which will share the 6211da177e4SLinus Torvalds * permanent log reservation of the given transaction. The remaining 6221da177e4SLinus Torvalds * unused block and rt extent reservations are also inherited. This 6231da177e4SLinus Torvalds * implies that the original transaction is no longer allowed to allocate 6241da177e4SLinus Torvalds * blocks. Locks and log items, however, are no inherited. They must 6251da177e4SLinus Torvalds * be added to the new transaction explicitly. 6261da177e4SLinus Torvalds */ 6271da177e4SLinus Torvalds xfs_trans_t * 6281da177e4SLinus Torvalds xfs_trans_dup( 6291da177e4SLinus Torvalds xfs_trans_t *tp) 6301da177e4SLinus Torvalds { 6311da177e4SLinus Torvalds xfs_trans_t *ntp; 6321da177e4SLinus Torvalds 6331da177e4SLinus Torvalds ntp = kmem_zone_zalloc(xfs_trans_zone, KM_SLEEP); 6341da177e4SLinus Torvalds 6351da177e4SLinus Torvalds /* 6361da177e4SLinus Torvalds * Initialize the new transaction structure. 6371da177e4SLinus Torvalds */ 6381da177e4SLinus Torvalds ntp->t_magic = XFS_TRANS_MAGIC; 6391da177e4SLinus Torvalds ntp->t_type = tp->t_type; 6401da177e4SLinus Torvalds ntp->t_mountp = tp->t_mountp; 641e98c414fSChristoph Hellwig INIT_LIST_HEAD(&ntp->t_items); 642ed3b4d6cSDave Chinner INIT_LIST_HEAD(&ntp->t_busy); 6431da177e4SLinus Torvalds 6441da177e4SLinus Torvalds ASSERT(tp->t_flags & XFS_TRANS_PERM_LOG_RES); 6451da177e4SLinus Torvalds ASSERT(tp->t_ticket != NULL); 646cfcbbbd0SNathan Scott 6471da177e4SLinus Torvalds ntp->t_flags = XFS_TRANS_PERM_LOG_RES | (tp->t_flags & XFS_TRANS_RESERVE); 648cc09c0dcSDave Chinner ntp->t_ticket = xfs_log_ticket_get(tp->t_ticket); 6491da177e4SLinus Torvalds ntp->t_blk_res = tp->t_blk_res - tp->t_blk_res_used; 6501da177e4SLinus Torvalds tp->t_blk_res = tp->t_blk_res_used; 6511da177e4SLinus Torvalds ntp->t_rtx_res = tp->t_rtx_res - tp->t_rtx_res_used; 6521da177e4SLinus Torvalds tp->t_rtx_res = tp->t_rtx_res_used; 65359c1b082SNathan Scott ntp->t_pflags = tp->t_pflags; 6541da177e4SLinus Torvalds 6557d095257SChristoph Hellwig xfs_trans_dup_dqinfo(tp, ntp); 6561da177e4SLinus Torvalds 6571da177e4SLinus Torvalds atomic_inc(&tp->t_mountp->m_active_trans); 6581da177e4SLinus Torvalds return ntp; 6591da177e4SLinus Torvalds } 6601da177e4SLinus Torvalds 6611da177e4SLinus Torvalds /* 6621da177e4SLinus Torvalds * This is called to reserve free disk blocks and log space for the 6631da177e4SLinus Torvalds * given transaction. This must be done before allocating any resources 6641da177e4SLinus Torvalds * within the transaction. 6651da177e4SLinus Torvalds * 6661da177e4SLinus Torvalds * This will return ENOSPC if there are not enough blocks available. 6671da177e4SLinus Torvalds * It will sleep waiting for available log space. 6681da177e4SLinus Torvalds * The only valid value for the flags parameter is XFS_RES_LOG_PERM, which 6691da177e4SLinus Torvalds * is used by long running transactions. If any one of the reservations 6701da177e4SLinus Torvalds * fails then they will all be backed out. 6711da177e4SLinus Torvalds * 6721da177e4SLinus Torvalds * This does not do quota reservations. That typically is done by the 6731da177e4SLinus Torvalds * caller afterwards. 6741da177e4SLinus Torvalds */ 6751da177e4SLinus Torvalds int 6761da177e4SLinus Torvalds xfs_trans_reserve( 6771da177e4SLinus Torvalds xfs_trans_t *tp, 6781da177e4SLinus Torvalds uint blocks, 6791da177e4SLinus Torvalds uint logspace, 6801da177e4SLinus Torvalds uint rtextents, 6811da177e4SLinus Torvalds uint flags, 6821da177e4SLinus Torvalds uint logcount) 6831da177e4SLinus Torvalds { 68459c1b082SNathan Scott int error = 0; 68559c1b082SNathan Scott int rsvd = (tp->t_flags & XFS_TRANS_RESERVE) != 0; 6861da177e4SLinus Torvalds 6871da177e4SLinus Torvalds /* Mark this thread as being in a transaction */ 68859c1b082SNathan Scott current_set_flags_nested(&tp->t_pflags, PF_FSTRANS); 6891da177e4SLinus Torvalds 6901da177e4SLinus Torvalds /* 6911da177e4SLinus Torvalds * Attempt to reserve the needed disk blocks by decrementing 6921da177e4SLinus Torvalds * the number needed from the number available. This will 6931da177e4SLinus Torvalds * fail if the count would go below zero. 6941da177e4SLinus Torvalds */ 6951da177e4SLinus Torvalds if (blocks > 0) { 69696540c78SChristoph Hellwig error = xfs_icsb_modify_counters(tp->t_mountp, XFS_SBS_FDBLOCKS, 69720f4ebf2SDavid Chinner -((int64_t)blocks), rsvd); 6981da177e4SLinus Torvalds if (error != 0) { 69959c1b082SNathan Scott current_restore_flags_nested(&tp->t_pflags, PF_FSTRANS); 7001da177e4SLinus Torvalds return (XFS_ERROR(ENOSPC)); 7011da177e4SLinus Torvalds } 7021da177e4SLinus Torvalds tp->t_blk_res += blocks; 7031da177e4SLinus Torvalds } 7041da177e4SLinus Torvalds 7051da177e4SLinus Torvalds /* 7061da177e4SLinus Torvalds * Reserve the log space needed for this transaction. 7071da177e4SLinus Torvalds */ 7081da177e4SLinus Torvalds if (logspace > 0) { 709*9006fb91SChristoph Hellwig bool permanent = false; 710*9006fb91SChristoph Hellwig 711*9006fb91SChristoph Hellwig ASSERT(tp->t_log_res == 0 || tp->t_log_res == logspace); 712*9006fb91SChristoph Hellwig ASSERT(tp->t_log_count == 0 || tp->t_log_count == logcount); 713*9006fb91SChristoph Hellwig 7141da177e4SLinus Torvalds if (flags & XFS_TRANS_PERM_LOG_RES) { 7151da177e4SLinus Torvalds tp->t_flags |= XFS_TRANS_PERM_LOG_RES; 716*9006fb91SChristoph Hellwig permanent = true; 7171da177e4SLinus Torvalds } else { 7181da177e4SLinus Torvalds ASSERT(tp->t_ticket == NULL); 7191da177e4SLinus Torvalds ASSERT(!(tp->t_flags & XFS_TRANS_PERM_LOG_RES)); 7201da177e4SLinus Torvalds } 7211da177e4SLinus Torvalds 722*9006fb91SChristoph Hellwig if (tp->t_ticket != NULL) { 723*9006fb91SChristoph Hellwig ASSERT(flags & XFS_TRANS_PERM_LOG_RES); 724*9006fb91SChristoph Hellwig error = xfs_log_regrant(tp->t_mountp, tp->t_ticket); 725*9006fb91SChristoph Hellwig } else { 726*9006fb91SChristoph Hellwig error = xfs_log_reserve(tp->t_mountp, logspace, 727*9006fb91SChristoph Hellwig logcount, &tp->t_ticket, 728*9006fb91SChristoph Hellwig XFS_TRANSACTION, permanent, 729*9006fb91SChristoph Hellwig tp->t_type); 7301da177e4SLinus Torvalds } 731*9006fb91SChristoph Hellwig 732*9006fb91SChristoph Hellwig if (error) 733*9006fb91SChristoph Hellwig goto undo_blocks; 734*9006fb91SChristoph Hellwig 7351da177e4SLinus Torvalds tp->t_log_res = logspace; 7361da177e4SLinus Torvalds tp->t_log_count = logcount; 7371da177e4SLinus Torvalds } 7381da177e4SLinus Torvalds 7391da177e4SLinus Torvalds /* 7401da177e4SLinus Torvalds * Attempt to reserve the needed realtime extents by decrementing 7411da177e4SLinus Torvalds * the number needed from the number available. This will 7421da177e4SLinus Torvalds * fail if the count would go below zero. 7431da177e4SLinus Torvalds */ 7441da177e4SLinus Torvalds if (rtextents > 0) { 7451da177e4SLinus Torvalds error = xfs_mod_incore_sb(tp->t_mountp, XFS_SBS_FREXTENTS, 74620f4ebf2SDavid Chinner -((int64_t)rtextents), rsvd); 7471da177e4SLinus Torvalds if (error) { 7481da177e4SLinus Torvalds error = XFS_ERROR(ENOSPC); 7491da177e4SLinus Torvalds goto undo_log; 7501da177e4SLinus Torvalds } 7511da177e4SLinus Torvalds tp->t_rtx_res += rtextents; 7521da177e4SLinus Torvalds } 7531da177e4SLinus Torvalds 7541da177e4SLinus Torvalds return 0; 7551da177e4SLinus Torvalds 7561da177e4SLinus Torvalds /* 7571da177e4SLinus Torvalds * Error cases jump to one of these labels to undo any 7581da177e4SLinus Torvalds * reservations which have already been performed. 7591da177e4SLinus Torvalds */ 7601da177e4SLinus Torvalds undo_log: 7611da177e4SLinus Torvalds if (logspace > 0) { 762*9006fb91SChristoph Hellwig int log_flags; 763*9006fb91SChristoph Hellwig 7641da177e4SLinus Torvalds if (flags & XFS_TRANS_PERM_LOG_RES) { 7651da177e4SLinus Torvalds log_flags = XFS_LOG_REL_PERM_RESERV; 7661da177e4SLinus Torvalds } else { 7671da177e4SLinus Torvalds log_flags = 0; 7681da177e4SLinus Torvalds } 7691da177e4SLinus Torvalds xfs_log_done(tp->t_mountp, tp->t_ticket, NULL, log_flags); 7701da177e4SLinus Torvalds tp->t_ticket = NULL; 7711da177e4SLinus Torvalds tp->t_log_res = 0; 7721da177e4SLinus Torvalds tp->t_flags &= ~XFS_TRANS_PERM_LOG_RES; 7731da177e4SLinus Torvalds } 7741da177e4SLinus Torvalds 7751da177e4SLinus Torvalds undo_blocks: 7761da177e4SLinus Torvalds if (blocks > 0) { 77796540c78SChristoph Hellwig xfs_icsb_modify_counters(tp->t_mountp, XFS_SBS_FDBLOCKS, 77820f4ebf2SDavid Chinner (int64_t)blocks, rsvd); 7791da177e4SLinus Torvalds tp->t_blk_res = 0; 7801da177e4SLinus Torvalds } 7811da177e4SLinus Torvalds 78259c1b082SNathan Scott current_restore_flags_nested(&tp->t_pflags, PF_FSTRANS); 7831da177e4SLinus Torvalds 78459c1b082SNathan Scott return error; 7851da177e4SLinus Torvalds } 7861da177e4SLinus Torvalds 7871da177e4SLinus Torvalds /* 7881da177e4SLinus Torvalds * Record the indicated change to the given field for application 7891da177e4SLinus Torvalds * to the file system's superblock when the transaction commits. 7901da177e4SLinus Torvalds * For now, just store the change in the transaction structure. 7911da177e4SLinus Torvalds * 7921da177e4SLinus Torvalds * Mark the transaction structure to indicate that the superblock 7931da177e4SLinus Torvalds * needs to be updated before committing. 79492821e2bSDavid Chinner * 79592821e2bSDavid Chinner * Because we may not be keeping track of allocated/free inodes and 79692821e2bSDavid Chinner * used filesystem blocks in the superblock, we do not mark the 79792821e2bSDavid Chinner * superblock dirty in this transaction if we modify these fields. 79892821e2bSDavid Chinner * We still need to update the transaction deltas so that they get 79992821e2bSDavid Chinner * applied to the incore superblock, but we don't want them to 80092821e2bSDavid Chinner * cause the superblock to get locked and logged if these are the 80192821e2bSDavid Chinner * only fields in the superblock that the transaction modifies. 8021da177e4SLinus Torvalds */ 8031da177e4SLinus Torvalds void 8041da177e4SLinus Torvalds xfs_trans_mod_sb( 8051da177e4SLinus Torvalds xfs_trans_t *tp, 8061da177e4SLinus Torvalds uint field, 80720f4ebf2SDavid Chinner int64_t delta) 8081da177e4SLinus Torvalds { 80992821e2bSDavid Chinner uint32_t flags = (XFS_TRANS_DIRTY|XFS_TRANS_SB_DIRTY); 81092821e2bSDavid Chinner xfs_mount_t *mp = tp->t_mountp; 8111da177e4SLinus Torvalds 8121da177e4SLinus Torvalds switch (field) { 8131da177e4SLinus Torvalds case XFS_TRANS_SB_ICOUNT: 8141da177e4SLinus Torvalds tp->t_icount_delta += delta; 81592821e2bSDavid Chinner if (xfs_sb_version_haslazysbcount(&mp->m_sb)) 81692821e2bSDavid Chinner flags &= ~XFS_TRANS_SB_DIRTY; 8171da177e4SLinus Torvalds break; 8181da177e4SLinus Torvalds case XFS_TRANS_SB_IFREE: 8191da177e4SLinus Torvalds tp->t_ifree_delta += delta; 82092821e2bSDavid Chinner if (xfs_sb_version_haslazysbcount(&mp->m_sb)) 82192821e2bSDavid Chinner flags &= ~XFS_TRANS_SB_DIRTY; 8221da177e4SLinus Torvalds break; 8231da177e4SLinus Torvalds case XFS_TRANS_SB_FDBLOCKS: 8241da177e4SLinus Torvalds /* 8251da177e4SLinus Torvalds * Track the number of blocks allocated in the 8261da177e4SLinus Torvalds * transaction. Make sure it does not exceed the 8271da177e4SLinus Torvalds * number reserved. 8281da177e4SLinus Torvalds */ 8291da177e4SLinus Torvalds if (delta < 0) { 8301da177e4SLinus Torvalds tp->t_blk_res_used += (uint)-delta; 8311da177e4SLinus Torvalds ASSERT(tp->t_blk_res_used <= tp->t_blk_res); 8321da177e4SLinus Torvalds } 8331da177e4SLinus Torvalds tp->t_fdblocks_delta += delta; 83492821e2bSDavid Chinner if (xfs_sb_version_haslazysbcount(&mp->m_sb)) 83592821e2bSDavid Chinner flags &= ~XFS_TRANS_SB_DIRTY; 8361da177e4SLinus Torvalds break; 8371da177e4SLinus Torvalds case XFS_TRANS_SB_RES_FDBLOCKS: 8381da177e4SLinus Torvalds /* 8391da177e4SLinus Torvalds * The allocation has already been applied to the 8401da177e4SLinus Torvalds * in-core superblock's counter. This should only 8411da177e4SLinus Torvalds * be applied to the on-disk superblock. 8421da177e4SLinus Torvalds */ 8431da177e4SLinus Torvalds ASSERT(delta < 0); 8441da177e4SLinus Torvalds tp->t_res_fdblocks_delta += delta; 84592821e2bSDavid Chinner if (xfs_sb_version_haslazysbcount(&mp->m_sb)) 84692821e2bSDavid Chinner flags &= ~XFS_TRANS_SB_DIRTY; 8471da177e4SLinus Torvalds break; 8481da177e4SLinus Torvalds case XFS_TRANS_SB_FREXTENTS: 8491da177e4SLinus Torvalds /* 8501da177e4SLinus Torvalds * Track the number of blocks allocated in the 8511da177e4SLinus Torvalds * transaction. Make sure it does not exceed the 8521da177e4SLinus Torvalds * number reserved. 8531da177e4SLinus Torvalds */ 8541da177e4SLinus Torvalds if (delta < 0) { 8551da177e4SLinus Torvalds tp->t_rtx_res_used += (uint)-delta; 8561da177e4SLinus Torvalds ASSERT(tp->t_rtx_res_used <= tp->t_rtx_res); 8571da177e4SLinus Torvalds } 8581da177e4SLinus Torvalds tp->t_frextents_delta += delta; 8591da177e4SLinus Torvalds break; 8601da177e4SLinus Torvalds case XFS_TRANS_SB_RES_FREXTENTS: 8611da177e4SLinus Torvalds /* 8621da177e4SLinus Torvalds * The allocation has already been applied to the 863c41564b5SNathan Scott * in-core superblock's counter. This should only 8641da177e4SLinus Torvalds * be applied to the on-disk superblock. 8651da177e4SLinus Torvalds */ 8661da177e4SLinus Torvalds ASSERT(delta < 0); 8671da177e4SLinus Torvalds tp->t_res_frextents_delta += delta; 8681da177e4SLinus Torvalds break; 8691da177e4SLinus Torvalds case XFS_TRANS_SB_DBLOCKS: 8701da177e4SLinus Torvalds ASSERT(delta > 0); 8711da177e4SLinus Torvalds tp->t_dblocks_delta += delta; 8721da177e4SLinus Torvalds break; 8731da177e4SLinus Torvalds case XFS_TRANS_SB_AGCOUNT: 8741da177e4SLinus Torvalds ASSERT(delta > 0); 8751da177e4SLinus Torvalds tp->t_agcount_delta += delta; 8761da177e4SLinus Torvalds break; 8771da177e4SLinus Torvalds case XFS_TRANS_SB_IMAXPCT: 8781da177e4SLinus Torvalds tp->t_imaxpct_delta += delta; 8791da177e4SLinus Torvalds break; 8801da177e4SLinus Torvalds case XFS_TRANS_SB_REXTSIZE: 8811da177e4SLinus Torvalds tp->t_rextsize_delta += delta; 8821da177e4SLinus Torvalds break; 8831da177e4SLinus Torvalds case XFS_TRANS_SB_RBMBLOCKS: 8841da177e4SLinus Torvalds tp->t_rbmblocks_delta += delta; 8851da177e4SLinus Torvalds break; 8861da177e4SLinus Torvalds case XFS_TRANS_SB_RBLOCKS: 8871da177e4SLinus Torvalds tp->t_rblocks_delta += delta; 8881da177e4SLinus Torvalds break; 8891da177e4SLinus Torvalds case XFS_TRANS_SB_REXTENTS: 8901da177e4SLinus Torvalds tp->t_rextents_delta += delta; 8911da177e4SLinus Torvalds break; 8921da177e4SLinus Torvalds case XFS_TRANS_SB_REXTSLOG: 8931da177e4SLinus Torvalds tp->t_rextslog_delta += delta; 8941da177e4SLinus Torvalds break; 8951da177e4SLinus Torvalds default: 8961da177e4SLinus Torvalds ASSERT(0); 8971da177e4SLinus Torvalds return; 8981da177e4SLinus Torvalds } 8991da177e4SLinus Torvalds 900210c6f1cSDavid Chinner tp->t_flags |= flags; 9011da177e4SLinus Torvalds } 9021da177e4SLinus Torvalds 9031da177e4SLinus Torvalds /* 9041da177e4SLinus Torvalds * xfs_trans_apply_sb_deltas() is called from the commit code 9051da177e4SLinus Torvalds * to bring the superblock buffer into the current transaction 9061da177e4SLinus Torvalds * and modify it as requested by earlier calls to xfs_trans_mod_sb(). 9071da177e4SLinus Torvalds * 9081da177e4SLinus Torvalds * For now we just look at each field allowed to change and change 9091da177e4SLinus Torvalds * it if necessary. 9101da177e4SLinus Torvalds */ 9111da177e4SLinus Torvalds STATIC void 9121da177e4SLinus Torvalds xfs_trans_apply_sb_deltas( 9131da177e4SLinus Torvalds xfs_trans_t *tp) 9141da177e4SLinus Torvalds { 9152bdf7cd0SChristoph Hellwig xfs_dsb_t *sbp; 9161da177e4SLinus Torvalds xfs_buf_t *bp; 9171da177e4SLinus Torvalds int whole = 0; 9181da177e4SLinus Torvalds 9191da177e4SLinus Torvalds bp = xfs_trans_getsb(tp, tp->t_mountp, 0); 9201da177e4SLinus Torvalds sbp = XFS_BUF_TO_SBP(bp); 9211da177e4SLinus Torvalds 9221da177e4SLinus Torvalds /* 9231da177e4SLinus Torvalds * Check that superblock mods match the mods made to AGF counters. 9241da177e4SLinus Torvalds */ 9251da177e4SLinus Torvalds ASSERT((tp->t_fdblocks_delta + tp->t_res_fdblocks_delta) == 9261da177e4SLinus Torvalds (tp->t_ag_freeblks_delta + tp->t_ag_flist_delta + 9271da177e4SLinus Torvalds tp->t_ag_btree_delta)); 9281da177e4SLinus Torvalds 92992821e2bSDavid Chinner /* 93092821e2bSDavid Chinner * Only update the superblock counters if we are logging them 93192821e2bSDavid Chinner */ 93292821e2bSDavid Chinner if (!xfs_sb_version_haslazysbcount(&(tp->t_mountp->m_sb))) { 9332bdf7cd0SChristoph Hellwig if (tp->t_icount_delta) 934413d57c9SMarcin Slusarz be64_add_cpu(&sbp->sb_icount, tp->t_icount_delta); 9352bdf7cd0SChristoph Hellwig if (tp->t_ifree_delta) 936413d57c9SMarcin Slusarz be64_add_cpu(&sbp->sb_ifree, tp->t_ifree_delta); 9372bdf7cd0SChristoph Hellwig if (tp->t_fdblocks_delta) 938413d57c9SMarcin Slusarz be64_add_cpu(&sbp->sb_fdblocks, tp->t_fdblocks_delta); 9392bdf7cd0SChristoph Hellwig if (tp->t_res_fdblocks_delta) 940413d57c9SMarcin Slusarz be64_add_cpu(&sbp->sb_fdblocks, tp->t_res_fdblocks_delta); 9411da177e4SLinus Torvalds } 9421da177e4SLinus Torvalds 9432bdf7cd0SChristoph Hellwig if (tp->t_frextents_delta) 944413d57c9SMarcin Slusarz be64_add_cpu(&sbp->sb_frextents, tp->t_frextents_delta); 9452bdf7cd0SChristoph Hellwig if (tp->t_res_frextents_delta) 946413d57c9SMarcin Slusarz be64_add_cpu(&sbp->sb_frextents, tp->t_res_frextents_delta); 9471da177e4SLinus Torvalds 9482bdf7cd0SChristoph Hellwig if (tp->t_dblocks_delta) { 949413d57c9SMarcin Slusarz be64_add_cpu(&sbp->sb_dblocks, tp->t_dblocks_delta); 9501da177e4SLinus Torvalds whole = 1; 9511da177e4SLinus Torvalds } 9522bdf7cd0SChristoph Hellwig if (tp->t_agcount_delta) { 953413d57c9SMarcin Slusarz be32_add_cpu(&sbp->sb_agcount, tp->t_agcount_delta); 9541da177e4SLinus Torvalds whole = 1; 9551da177e4SLinus Torvalds } 9562bdf7cd0SChristoph Hellwig if (tp->t_imaxpct_delta) { 9572bdf7cd0SChristoph Hellwig sbp->sb_imax_pct += tp->t_imaxpct_delta; 9581da177e4SLinus Torvalds whole = 1; 9591da177e4SLinus Torvalds } 9602bdf7cd0SChristoph Hellwig if (tp->t_rextsize_delta) { 961413d57c9SMarcin Slusarz be32_add_cpu(&sbp->sb_rextsize, tp->t_rextsize_delta); 9621da177e4SLinus Torvalds whole = 1; 9631da177e4SLinus Torvalds } 9642bdf7cd0SChristoph Hellwig if (tp->t_rbmblocks_delta) { 965413d57c9SMarcin Slusarz be32_add_cpu(&sbp->sb_rbmblocks, tp->t_rbmblocks_delta); 9661da177e4SLinus Torvalds whole = 1; 9671da177e4SLinus Torvalds } 9682bdf7cd0SChristoph Hellwig if (tp->t_rblocks_delta) { 969413d57c9SMarcin Slusarz be64_add_cpu(&sbp->sb_rblocks, tp->t_rblocks_delta); 9701da177e4SLinus Torvalds whole = 1; 9711da177e4SLinus Torvalds } 9722bdf7cd0SChristoph Hellwig if (tp->t_rextents_delta) { 973413d57c9SMarcin Slusarz be64_add_cpu(&sbp->sb_rextents, tp->t_rextents_delta); 9741da177e4SLinus Torvalds whole = 1; 9751da177e4SLinus Torvalds } 9762bdf7cd0SChristoph Hellwig if (tp->t_rextslog_delta) { 9772bdf7cd0SChristoph Hellwig sbp->sb_rextslog += tp->t_rextslog_delta; 9781da177e4SLinus Torvalds whole = 1; 9791da177e4SLinus Torvalds } 9801da177e4SLinus Torvalds 9811da177e4SLinus Torvalds if (whole) 9821da177e4SLinus Torvalds /* 983c41564b5SNathan Scott * Log the whole thing, the fields are noncontiguous. 9841da177e4SLinus Torvalds */ 9852bdf7cd0SChristoph Hellwig xfs_trans_log_buf(tp, bp, 0, sizeof(xfs_dsb_t) - 1); 9861da177e4SLinus Torvalds else 9871da177e4SLinus Torvalds /* 9881da177e4SLinus Torvalds * Since all the modifiable fields are contiguous, we 9891da177e4SLinus Torvalds * can get away with this. 9901da177e4SLinus Torvalds */ 9912bdf7cd0SChristoph Hellwig xfs_trans_log_buf(tp, bp, offsetof(xfs_dsb_t, sb_icount), 9922bdf7cd0SChristoph Hellwig offsetof(xfs_dsb_t, sb_frextents) + 9931da177e4SLinus Torvalds sizeof(sbp->sb_frextents) - 1); 9941da177e4SLinus Torvalds } 9951da177e4SLinus Torvalds 9961da177e4SLinus Torvalds /* 99745c34141SDavid Chinner * xfs_trans_unreserve_and_mod_sb() is called to release unused reservations 99845c34141SDavid Chinner * and apply superblock counter changes to the in-core superblock. The 99945c34141SDavid Chinner * t_res_fdblocks_delta and t_res_frextents_delta fields are explicitly NOT 100045c34141SDavid Chinner * applied to the in-core superblock. The idea is that that has already been 100145c34141SDavid Chinner * done. 10021da177e4SLinus Torvalds * 10031da177e4SLinus Torvalds * This is done efficiently with a single call to xfs_mod_incore_sb_batch(). 100445c34141SDavid Chinner * However, we have to ensure that we only modify each superblock field only 100545c34141SDavid Chinner * once because the application of the delta values may not be atomic. That can 100645c34141SDavid Chinner * lead to ENOSPC races occurring if we have two separate modifcations of the 100745c34141SDavid Chinner * free space counter to put back the entire reservation and then take away 100845c34141SDavid Chinner * what we used. 100945c34141SDavid Chinner * 101045c34141SDavid Chinner * If we are not logging superblock counters, then the inode allocated/free and 101145c34141SDavid Chinner * used block counts are not updated in the on disk superblock. In this case, 101245c34141SDavid Chinner * XFS_TRANS_SB_DIRTY will not be set when the transaction is updated but we 101345c34141SDavid Chinner * still need to update the incore superblock with the changes. 10141da177e4SLinus Torvalds */ 101571e330b5SDave Chinner void 10161da177e4SLinus Torvalds xfs_trans_unreserve_and_mod_sb( 10171da177e4SLinus Torvalds xfs_trans_t *tp) 10181da177e4SLinus Torvalds { 10191b040712SChristoph Hellwig xfs_mod_sb_t msb[9]; /* If you add cases, add entries */ 10201da177e4SLinus Torvalds xfs_mod_sb_t *msbp; 102192821e2bSDavid Chinner xfs_mount_t *mp = tp->t_mountp; 10221da177e4SLinus Torvalds /* REFERENCED */ 10231da177e4SLinus Torvalds int error; 10241da177e4SLinus Torvalds int rsvd; 102545c34141SDavid Chinner int64_t blkdelta = 0; 102645c34141SDavid Chinner int64_t rtxdelta = 0; 10271b040712SChristoph Hellwig int64_t idelta = 0; 10281b040712SChristoph Hellwig int64_t ifreedelta = 0; 10291da177e4SLinus Torvalds 10301da177e4SLinus Torvalds msbp = msb; 10311da177e4SLinus Torvalds rsvd = (tp->t_flags & XFS_TRANS_RESERVE) != 0; 10321da177e4SLinus Torvalds 10331b040712SChristoph Hellwig /* calculate deltas */ 103445c34141SDavid Chinner if (tp->t_blk_res > 0) 103545c34141SDavid Chinner blkdelta = tp->t_blk_res; 103645c34141SDavid Chinner if ((tp->t_fdblocks_delta != 0) && 103745c34141SDavid Chinner (xfs_sb_version_haslazysbcount(&mp->m_sb) || 103845c34141SDavid Chinner (tp->t_flags & XFS_TRANS_SB_DIRTY))) 103945c34141SDavid Chinner blkdelta += tp->t_fdblocks_delta; 104045c34141SDavid Chinner 104145c34141SDavid Chinner if (tp->t_rtx_res > 0) 104245c34141SDavid Chinner rtxdelta = tp->t_rtx_res; 104345c34141SDavid Chinner if ((tp->t_frextents_delta != 0) && 104445c34141SDavid Chinner (tp->t_flags & XFS_TRANS_SB_DIRTY)) 104545c34141SDavid Chinner rtxdelta += tp->t_frextents_delta; 104645c34141SDavid Chinner 10471b040712SChristoph Hellwig if (xfs_sb_version_haslazysbcount(&mp->m_sb) || 10481b040712SChristoph Hellwig (tp->t_flags & XFS_TRANS_SB_DIRTY)) { 10491b040712SChristoph Hellwig idelta = tp->t_icount_delta; 10501b040712SChristoph Hellwig ifreedelta = tp->t_ifree_delta; 10511b040712SChristoph Hellwig } 10521b040712SChristoph Hellwig 10531b040712SChristoph Hellwig /* apply the per-cpu counters */ 10541b040712SChristoph Hellwig if (blkdelta) { 10551b040712SChristoph Hellwig error = xfs_icsb_modify_counters(mp, XFS_SBS_FDBLOCKS, 10561b040712SChristoph Hellwig blkdelta, rsvd); 10571b040712SChristoph Hellwig if (error) 10581b040712SChristoph Hellwig goto out; 10591b040712SChristoph Hellwig } 10601b040712SChristoph Hellwig 10611b040712SChristoph Hellwig if (idelta) { 10621b040712SChristoph Hellwig error = xfs_icsb_modify_counters(mp, XFS_SBS_ICOUNT, 10631b040712SChristoph Hellwig idelta, rsvd); 10641b040712SChristoph Hellwig if (error) 10651b040712SChristoph Hellwig goto out_undo_fdblocks; 10661b040712SChristoph Hellwig } 10671b040712SChristoph Hellwig 10681b040712SChristoph Hellwig if (ifreedelta) { 10691b040712SChristoph Hellwig error = xfs_icsb_modify_counters(mp, XFS_SBS_IFREE, 10701b040712SChristoph Hellwig ifreedelta, rsvd); 10711b040712SChristoph Hellwig if (error) 10721b040712SChristoph Hellwig goto out_undo_icount; 10731b040712SChristoph Hellwig } 10741b040712SChristoph Hellwig 10751b040712SChristoph Hellwig /* apply remaining deltas */ 107645c34141SDavid Chinner if (rtxdelta != 0) { 10771da177e4SLinus Torvalds msbp->msb_field = XFS_SBS_FREXTENTS; 107845c34141SDavid Chinner msbp->msb_delta = rtxdelta; 10791da177e4SLinus Torvalds msbp++; 10801da177e4SLinus Torvalds } 10811da177e4SLinus Torvalds 108292821e2bSDavid Chinner if (tp->t_flags & XFS_TRANS_SB_DIRTY) { 10831da177e4SLinus Torvalds if (tp->t_dblocks_delta != 0) { 10841da177e4SLinus Torvalds msbp->msb_field = XFS_SBS_DBLOCKS; 108520f4ebf2SDavid Chinner msbp->msb_delta = tp->t_dblocks_delta; 10861da177e4SLinus Torvalds msbp++; 10871da177e4SLinus Torvalds } 10881da177e4SLinus Torvalds if (tp->t_agcount_delta != 0) { 10891da177e4SLinus Torvalds msbp->msb_field = XFS_SBS_AGCOUNT; 109020f4ebf2SDavid Chinner msbp->msb_delta = tp->t_agcount_delta; 10911da177e4SLinus Torvalds msbp++; 10921da177e4SLinus Torvalds } 10931da177e4SLinus Torvalds if (tp->t_imaxpct_delta != 0) { 10941da177e4SLinus Torvalds msbp->msb_field = XFS_SBS_IMAX_PCT; 109520f4ebf2SDavid Chinner msbp->msb_delta = tp->t_imaxpct_delta; 10961da177e4SLinus Torvalds msbp++; 10971da177e4SLinus Torvalds } 10981da177e4SLinus Torvalds if (tp->t_rextsize_delta != 0) { 10991da177e4SLinus Torvalds msbp->msb_field = XFS_SBS_REXTSIZE; 110020f4ebf2SDavid Chinner msbp->msb_delta = tp->t_rextsize_delta; 11011da177e4SLinus Torvalds msbp++; 11021da177e4SLinus Torvalds } 11031da177e4SLinus Torvalds if (tp->t_rbmblocks_delta != 0) { 11041da177e4SLinus Torvalds msbp->msb_field = XFS_SBS_RBMBLOCKS; 110520f4ebf2SDavid Chinner msbp->msb_delta = tp->t_rbmblocks_delta; 11061da177e4SLinus Torvalds msbp++; 11071da177e4SLinus Torvalds } 11081da177e4SLinus Torvalds if (tp->t_rblocks_delta != 0) { 11091da177e4SLinus Torvalds msbp->msb_field = XFS_SBS_RBLOCKS; 111020f4ebf2SDavid Chinner msbp->msb_delta = tp->t_rblocks_delta; 11111da177e4SLinus Torvalds msbp++; 11121da177e4SLinus Torvalds } 11131da177e4SLinus Torvalds if (tp->t_rextents_delta != 0) { 11141da177e4SLinus Torvalds msbp->msb_field = XFS_SBS_REXTENTS; 111520f4ebf2SDavid Chinner msbp->msb_delta = tp->t_rextents_delta; 11161da177e4SLinus Torvalds msbp++; 11171da177e4SLinus Torvalds } 11181da177e4SLinus Torvalds if (tp->t_rextslog_delta != 0) { 11191da177e4SLinus Torvalds msbp->msb_field = XFS_SBS_REXTSLOG; 112020f4ebf2SDavid Chinner msbp->msb_delta = tp->t_rextslog_delta; 11211da177e4SLinus Torvalds msbp++; 11221da177e4SLinus Torvalds } 11231da177e4SLinus Torvalds } 11241da177e4SLinus Torvalds 11251da177e4SLinus Torvalds /* 11261da177e4SLinus Torvalds * If we need to change anything, do it. 11271da177e4SLinus Torvalds */ 11281da177e4SLinus Torvalds if (msbp > msb) { 11291da177e4SLinus Torvalds error = xfs_mod_incore_sb_batch(tp->t_mountp, msb, 11301da177e4SLinus Torvalds (uint)(msbp - msb), rsvd); 11311b040712SChristoph Hellwig if (error) 11321b040712SChristoph Hellwig goto out_undo_ifreecount; 11331da177e4SLinus Torvalds } 11341b040712SChristoph Hellwig 11351b040712SChristoph Hellwig return; 11361b040712SChristoph Hellwig 11371b040712SChristoph Hellwig out_undo_ifreecount: 11381b040712SChristoph Hellwig if (ifreedelta) 11391b040712SChristoph Hellwig xfs_icsb_modify_counters(mp, XFS_SBS_IFREE, -ifreedelta, rsvd); 11401b040712SChristoph Hellwig out_undo_icount: 11411b040712SChristoph Hellwig if (idelta) 11421b040712SChristoph Hellwig xfs_icsb_modify_counters(mp, XFS_SBS_ICOUNT, -idelta, rsvd); 11431b040712SChristoph Hellwig out_undo_fdblocks: 11441b040712SChristoph Hellwig if (blkdelta) 11451b040712SChristoph Hellwig xfs_icsb_modify_counters(mp, XFS_SBS_FDBLOCKS, -blkdelta, rsvd); 11461b040712SChristoph Hellwig out: 11471884bd83SJesper Juhl ASSERT(error == 0); 11481b040712SChristoph Hellwig return; 11491da177e4SLinus Torvalds } 11501da177e4SLinus Torvalds 11511da177e4SLinus Torvalds /* 1152e98c414fSChristoph Hellwig * Add the given log item to the transaction's list of log items. 1153e98c414fSChristoph Hellwig * 1154e98c414fSChristoph Hellwig * The log item will now point to its new descriptor with its li_desc field. 1155e98c414fSChristoph Hellwig */ 1156e98c414fSChristoph Hellwig void 1157e98c414fSChristoph Hellwig xfs_trans_add_item( 1158e98c414fSChristoph Hellwig struct xfs_trans *tp, 1159e98c414fSChristoph Hellwig struct xfs_log_item *lip) 1160e98c414fSChristoph Hellwig { 1161e98c414fSChristoph Hellwig struct xfs_log_item_desc *lidp; 1162e98c414fSChristoph Hellwig 1163f65020a8SJesper Juhl ASSERT(lip->li_mountp == tp->t_mountp); 1164f65020a8SJesper Juhl ASSERT(lip->li_ailp == tp->t_mountp->m_ail); 1165e98c414fSChristoph Hellwig 116643869706SDave Chinner lidp = kmem_zone_zalloc(xfs_log_item_desc_zone, KM_SLEEP | KM_NOFS); 1167e98c414fSChristoph Hellwig 1168e98c414fSChristoph Hellwig lidp->lid_item = lip; 1169e98c414fSChristoph Hellwig lidp->lid_flags = 0; 1170e98c414fSChristoph Hellwig list_add_tail(&lidp->lid_trans, &tp->t_items); 1171e98c414fSChristoph Hellwig 1172e98c414fSChristoph Hellwig lip->li_desc = lidp; 1173e98c414fSChristoph Hellwig } 1174e98c414fSChristoph Hellwig 1175e98c414fSChristoph Hellwig STATIC void 1176e98c414fSChristoph Hellwig xfs_trans_free_item_desc( 1177e98c414fSChristoph Hellwig struct xfs_log_item_desc *lidp) 1178e98c414fSChristoph Hellwig { 1179e98c414fSChristoph Hellwig list_del_init(&lidp->lid_trans); 1180e98c414fSChristoph Hellwig kmem_zone_free(xfs_log_item_desc_zone, lidp); 1181e98c414fSChristoph Hellwig } 1182e98c414fSChristoph Hellwig 1183e98c414fSChristoph Hellwig /* 1184e98c414fSChristoph Hellwig * Unlink and free the given descriptor. 1185e98c414fSChristoph Hellwig */ 1186e98c414fSChristoph Hellwig void 1187e98c414fSChristoph Hellwig xfs_trans_del_item( 1188e98c414fSChristoph Hellwig struct xfs_log_item *lip) 1189e98c414fSChristoph Hellwig { 1190e98c414fSChristoph Hellwig xfs_trans_free_item_desc(lip->li_desc); 1191e98c414fSChristoph Hellwig lip->li_desc = NULL; 1192e98c414fSChristoph Hellwig } 1193e98c414fSChristoph Hellwig 1194e98c414fSChristoph Hellwig /* 1195e98c414fSChristoph Hellwig * Unlock all of the items of a transaction and free all the descriptors 1196e98c414fSChristoph Hellwig * of that transaction. 1197e98c414fSChristoph Hellwig */ 1198d17c701cSDave Chinner void 1199e98c414fSChristoph Hellwig xfs_trans_free_items( 1200e98c414fSChristoph Hellwig struct xfs_trans *tp, 1201e98c414fSChristoph Hellwig xfs_lsn_t commit_lsn, 1202e98c414fSChristoph Hellwig int flags) 1203e98c414fSChristoph Hellwig { 1204e98c414fSChristoph Hellwig struct xfs_log_item_desc *lidp, *next; 1205e98c414fSChristoph Hellwig 1206e98c414fSChristoph Hellwig list_for_each_entry_safe(lidp, next, &tp->t_items, lid_trans) { 1207e98c414fSChristoph Hellwig struct xfs_log_item *lip = lidp->lid_item; 1208e98c414fSChristoph Hellwig 1209e98c414fSChristoph Hellwig lip->li_desc = NULL; 1210e98c414fSChristoph Hellwig 1211e98c414fSChristoph Hellwig if (commit_lsn != NULLCOMMITLSN) 1212e98c414fSChristoph Hellwig IOP_COMMITTING(lip, commit_lsn); 1213e98c414fSChristoph Hellwig if (flags & XFS_TRANS_ABORT) 1214e98c414fSChristoph Hellwig lip->li_flags |= XFS_LI_ABORTED; 1215e98c414fSChristoph Hellwig IOP_UNLOCK(lip); 1216e98c414fSChristoph Hellwig 1217e98c414fSChristoph Hellwig xfs_trans_free_item_desc(lidp); 1218e98c414fSChristoph Hellwig } 1219e98c414fSChristoph Hellwig } 1220e98c414fSChristoph Hellwig 12210e57f6a3SDave Chinner static inline void 12220e57f6a3SDave Chinner xfs_log_item_batch_insert( 12230e57f6a3SDave Chinner struct xfs_ail *ailp, 12241d8c95a3SDave Chinner struct xfs_ail_cursor *cur, 12250e57f6a3SDave Chinner struct xfs_log_item **log_items, 12260e57f6a3SDave Chinner int nr_items, 12270e57f6a3SDave Chinner xfs_lsn_t commit_lsn) 12280e57f6a3SDave Chinner { 12290e57f6a3SDave Chinner int i; 12300e57f6a3SDave Chinner 12310e57f6a3SDave Chinner spin_lock(&ailp->xa_lock); 12320e57f6a3SDave Chinner /* xfs_trans_ail_update_bulk drops ailp->xa_lock */ 12331d8c95a3SDave Chinner xfs_trans_ail_update_bulk(ailp, cur, log_items, nr_items, commit_lsn); 12340e57f6a3SDave Chinner 12350e57f6a3SDave Chinner for (i = 0; i < nr_items; i++) 12360e57f6a3SDave Chinner IOP_UNPIN(log_items[i], 0); 12370e57f6a3SDave Chinner } 12380e57f6a3SDave Chinner 12390e57f6a3SDave Chinner /* 12400e57f6a3SDave Chinner * Bulk operation version of xfs_trans_committed that takes a log vector of 12410e57f6a3SDave Chinner * items to insert into the AIL. This uses bulk AIL insertion techniques to 12420e57f6a3SDave Chinner * minimise lock traffic. 1243e34a314cSDave Chinner * 1244e34a314cSDave Chinner * If we are called with the aborted flag set, it is because a log write during 1245e34a314cSDave Chinner * a CIL checkpoint commit has failed. In this case, all the items in the 1246e34a314cSDave Chinner * checkpoint have already gone through IOP_COMMITED and IOP_UNLOCK, which 1247e34a314cSDave Chinner * means that checkpoint commit abort handling is treated exactly the same 1248e34a314cSDave Chinner * as an iclog write error even though we haven't started any IO yet. Hence in 1249e34a314cSDave Chinner * this case all we need to do is IOP_COMMITTED processing, followed by an 1250e34a314cSDave Chinner * IOP_UNPIN(aborted) call. 12511d8c95a3SDave Chinner * 12521d8c95a3SDave Chinner * The AIL cursor is used to optimise the insert process. If commit_lsn is not 12531d8c95a3SDave Chinner * at the end of the AIL, the insert cursor avoids the need to walk 12541d8c95a3SDave Chinner * the AIL to find the insertion point on every xfs_log_item_batch_insert() 12551d8c95a3SDave Chinner * call. This saves a lot of needless list walking and is a net win, even 12561d8c95a3SDave Chinner * though it slightly increases that amount of AIL lock traffic to set it up 12571d8c95a3SDave Chinner * and tear it down. 12580e57f6a3SDave Chinner */ 12590e57f6a3SDave Chinner void 12600e57f6a3SDave Chinner xfs_trans_committed_bulk( 12610e57f6a3SDave Chinner struct xfs_ail *ailp, 12620e57f6a3SDave Chinner struct xfs_log_vec *log_vector, 12630e57f6a3SDave Chinner xfs_lsn_t commit_lsn, 12640e57f6a3SDave Chinner int aborted) 12650e57f6a3SDave Chinner { 12660e57f6a3SDave Chinner #define LOG_ITEM_BATCH_SIZE 32 12670e57f6a3SDave Chinner struct xfs_log_item *log_items[LOG_ITEM_BATCH_SIZE]; 12680e57f6a3SDave Chinner struct xfs_log_vec *lv; 12691d8c95a3SDave Chinner struct xfs_ail_cursor cur; 12700e57f6a3SDave Chinner int i = 0; 12710e57f6a3SDave Chinner 12721d8c95a3SDave Chinner spin_lock(&ailp->xa_lock); 12731d8c95a3SDave Chinner xfs_trans_ail_cursor_last(ailp, &cur, commit_lsn); 12741d8c95a3SDave Chinner spin_unlock(&ailp->xa_lock); 12751d8c95a3SDave Chinner 12760e57f6a3SDave Chinner /* unpin all the log items */ 12770e57f6a3SDave Chinner for (lv = log_vector; lv; lv = lv->lv_next ) { 12780e57f6a3SDave Chinner struct xfs_log_item *lip = lv->lv_item; 12790e57f6a3SDave Chinner xfs_lsn_t item_lsn; 12800e57f6a3SDave Chinner 12810e57f6a3SDave Chinner if (aborted) 12820e57f6a3SDave Chinner lip->li_flags |= XFS_LI_ABORTED; 12830e57f6a3SDave Chinner item_lsn = IOP_COMMITTED(lip, commit_lsn); 12840e57f6a3SDave Chinner 12851316d4daSDave Chinner /* item_lsn of -1 means the item needs no further processing */ 12860e57f6a3SDave Chinner if (XFS_LSN_CMP(item_lsn, (xfs_lsn_t)-1) == 0) 12870e57f6a3SDave Chinner continue; 12880e57f6a3SDave Chinner 1289e34a314cSDave Chinner /* 1290e34a314cSDave Chinner * if we are aborting the operation, no point in inserting the 1291e34a314cSDave Chinner * object into the AIL as we are in a shutdown situation. 1292e34a314cSDave Chinner */ 1293e34a314cSDave Chinner if (aborted) { 1294e34a314cSDave Chinner ASSERT(XFS_FORCED_SHUTDOWN(ailp->xa_mount)); 1295e34a314cSDave Chinner IOP_UNPIN(lip, 1); 1296e34a314cSDave Chinner continue; 1297e34a314cSDave Chinner } 1298e34a314cSDave Chinner 12990e57f6a3SDave Chinner if (item_lsn != commit_lsn) { 13000e57f6a3SDave Chinner 13010e57f6a3SDave Chinner /* 13020e57f6a3SDave Chinner * Not a bulk update option due to unusual item_lsn. 13030e57f6a3SDave Chinner * Push into AIL immediately, rechecking the lsn once 13041d8c95a3SDave Chinner * we have the ail lock. Then unpin the item. This does 13051d8c95a3SDave Chinner * not affect the AIL cursor the bulk insert path is 13061d8c95a3SDave Chinner * using. 13070e57f6a3SDave Chinner */ 13080e57f6a3SDave Chinner spin_lock(&ailp->xa_lock); 13090e57f6a3SDave Chinner if (XFS_LSN_CMP(item_lsn, lip->li_lsn) > 0) 13100e57f6a3SDave Chinner xfs_trans_ail_update(ailp, lip, item_lsn); 13110e57f6a3SDave Chinner else 13120e57f6a3SDave Chinner spin_unlock(&ailp->xa_lock); 13130e57f6a3SDave Chinner IOP_UNPIN(lip, 0); 13140e57f6a3SDave Chinner continue; 13150e57f6a3SDave Chinner } 13160e57f6a3SDave Chinner 13170e57f6a3SDave Chinner /* Item is a candidate for bulk AIL insert. */ 13180e57f6a3SDave Chinner log_items[i++] = lv->lv_item; 13190e57f6a3SDave Chinner if (i >= LOG_ITEM_BATCH_SIZE) { 13201d8c95a3SDave Chinner xfs_log_item_batch_insert(ailp, &cur, log_items, 13210e57f6a3SDave Chinner LOG_ITEM_BATCH_SIZE, commit_lsn); 13220e57f6a3SDave Chinner i = 0; 13230e57f6a3SDave Chinner } 13240e57f6a3SDave Chinner } 13250e57f6a3SDave Chinner 13260e57f6a3SDave Chinner /* make sure we insert the remainder! */ 13270e57f6a3SDave Chinner if (i) 13281d8c95a3SDave Chinner xfs_log_item_batch_insert(ailp, &cur, log_items, i, commit_lsn); 13291d8c95a3SDave Chinner 13301d8c95a3SDave Chinner spin_lock(&ailp->xa_lock); 13311d8c95a3SDave Chinner xfs_trans_ail_cursor_done(ailp, &cur); 13321d8c95a3SDave Chinner spin_unlock(&ailp->xa_lock); 13330e57f6a3SDave Chinner } 13340e57f6a3SDave Chinner 1335b1c1b5b6SDave Chinner /* 1336b1037058SChristoph Hellwig * Commit the given transaction to the log. 13370924378aSDave Chinner * 13380924378aSDave Chinner * XFS disk error handling mechanism is not based on a typical 13390924378aSDave Chinner * transaction abort mechanism. Logically after the filesystem 13400924378aSDave Chinner * gets marked 'SHUTDOWN', we can't let any new transactions 13410924378aSDave Chinner * be durable - ie. committed to disk - because some metadata might 13420924378aSDave Chinner * be inconsistent. In such cases, this returns an error, and the 13430924378aSDave Chinner * caller may assume that all locked objects joined to the transaction 13440924378aSDave Chinner * have already been unlocked as if the commit had succeeded. 13450924378aSDave Chinner * Do not reference the transaction structure after this call. 13460924378aSDave Chinner */ 13470924378aSDave Chinner int 1348b1037058SChristoph Hellwig xfs_trans_commit( 1349a3ccd2caSChristoph Hellwig struct xfs_trans *tp, 1350b1037058SChristoph Hellwig uint flags) 13510924378aSDave Chinner { 1352a3ccd2caSChristoph Hellwig struct xfs_mount *mp = tp->t_mountp; 13530924378aSDave Chinner xfs_lsn_t commit_lsn = -1; 1354a3ccd2caSChristoph Hellwig int error = 0; 13550924378aSDave Chinner int log_flags = 0; 13560924378aSDave Chinner int sync = tp->t_flags & XFS_TRANS_SYNC; 13570924378aSDave Chinner 13580924378aSDave Chinner /* 13590924378aSDave Chinner * Determine whether this commit is releasing a permanent 13600924378aSDave Chinner * log reservation or not. 13610924378aSDave Chinner */ 13620924378aSDave Chinner if (flags & XFS_TRANS_RELEASE_LOG_RES) { 13630924378aSDave Chinner ASSERT(tp->t_flags & XFS_TRANS_PERM_LOG_RES); 13640924378aSDave Chinner log_flags = XFS_LOG_REL_PERM_RESERV; 13650924378aSDave Chinner } 13660924378aSDave Chinner 13670924378aSDave Chinner /* 13680924378aSDave Chinner * If there is nothing to be logged by the transaction, 13690924378aSDave Chinner * then unlock all of the items associated with the 13700924378aSDave Chinner * transaction and free the transaction structure. 13710924378aSDave Chinner * Also make sure to return any reserved blocks to 13720924378aSDave Chinner * the free pool. 13730924378aSDave Chinner */ 1374a3ccd2caSChristoph Hellwig if (!(tp->t_flags & XFS_TRANS_DIRTY)) 1375a3ccd2caSChristoph Hellwig goto out_unreserve; 1376a3ccd2caSChristoph Hellwig 1377a3ccd2caSChristoph Hellwig if (XFS_FORCED_SHUTDOWN(mp)) { 1378a3ccd2caSChristoph Hellwig error = XFS_ERROR(EIO); 1379a3ccd2caSChristoph Hellwig goto out_unreserve; 13800924378aSDave Chinner } 1381a3ccd2caSChristoph Hellwig 13820924378aSDave Chinner ASSERT(tp->t_ticket != NULL); 13830924378aSDave Chinner 13840924378aSDave Chinner /* 13850924378aSDave Chinner * If we need to update the superblock, then do it now. 13860924378aSDave Chinner */ 13870924378aSDave Chinner if (tp->t_flags & XFS_TRANS_SB_DIRTY) 13880924378aSDave Chinner xfs_trans_apply_sb_deltas(tp); 13890924378aSDave Chinner xfs_trans_apply_dquot_deltas(tp); 13900924378aSDave Chinner 13910244b960SChristoph Hellwig error = xfs_log_commit_cil(mp, tp, &commit_lsn, flags); 13920924378aSDave Chinner if (error == ENOMEM) { 13930924378aSDave Chinner xfs_force_shutdown(mp, SHUTDOWN_LOG_IO_ERROR); 1394a3ccd2caSChristoph Hellwig error = XFS_ERROR(EIO); 1395a3ccd2caSChristoph Hellwig goto out_unreserve; 13960924378aSDave Chinner } 13971da177e4SLinus Torvalds 13980244b960SChristoph Hellwig current_restore_flags_nested(&tp->t_pflags, PF_FSTRANS); 13990244b960SChristoph Hellwig xfs_trans_free(tp); 14000244b960SChristoph Hellwig 14011da177e4SLinus Torvalds /* 14021da177e4SLinus Torvalds * If the transaction needs to be synchronous, then force the 14031da177e4SLinus Torvalds * log out now and wait for it. 14041da177e4SLinus Torvalds */ 14051da177e4SLinus Torvalds if (sync) { 1406f538d4daSChristoph Hellwig if (!error) { 1407a14a348bSChristoph Hellwig error = _xfs_log_force_lsn(mp, commit_lsn, 1408b1037058SChristoph Hellwig XFS_LOG_SYNC, NULL); 1409f538d4daSChristoph Hellwig } 14101da177e4SLinus Torvalds XFS_STATS_INC(xs_trans_sync); 14111da177e4SLinus Torvalds } else { 14121da177e4SLinus Torvalds XFS_STATS_INC(xs_trans_async); 14131da177e4SLinus Torvalds } 14141da177e4SLinus Torvalds 1415a3ccd2caSChristoph Hellwig return error; 1416a3ccd2caSChristoph Hellwig 1417a3ccd2caSChristoph Hellwig out_unreserve: 1418a3ccd2caSChristoph Hellwig xfs_trans_unreserve_and_mod_sb(tp); 1419a3ccd2caSChristoph Hellwig 1420a3ccd2caSChristoph Hellwig /* 1421a3ccd2caSChristoph Hellwig * It is indeed possible for the transaction to be not dirty but 1422a3ccd2caSChristoph Hellwig * the dqinfo portion to be. All that means is that we have some 1423a3ccd2caSChristoph Hellwig * (non-persistent) quota reservations that need to be unreserved. 1424a3ccd2caSChristoph Hellwig */ 1425a3ccd2caSChristoph Hellwig xfs_trans_unreserve_and_mod_dquots(tp); 1426a3ccd2caSChristoph Hellwig if (tp->t_ticket) { 1427a3ccd2caSChristoph Hellwig commit_lsn = xfs_log_done(mp, tp->t_ticket, NULL, log_flags); 1428a3ccd2caSChristoph Hellwig if (commit_lsn == -1 && !error) 1429a3ccd2caSChristoph Hellwig error = XFS_ERROR(EIO); 1430a3ccd2caSChristoph Hellwig } 1431a3ccd2caSChristoph Hellwig current_restore_flags_nested(&tp->t_pflags, PF_FSTRANS); 143271e330b5SDave Chinner xfs_trans_free_items(tp, NULLCOMMITLSN, error ? XFS_TRANS_ABORT : 0); 1433a3ccd2caSChristoph Hellwig xfs_trans_free(tp); 1434a3ccd2caSChristoph Hellwig 1435a3ccd2caSChristoph Hellwig XFS_STATS_INC(xs_trans_empty); 1436a3ccd2caSChristoph Hellwig return error; 14371da177e4SLinus Torvalds } 14381da177e4SLinus Torvalds 14391da177e4SLinus Torvalds /* 14401da177e4SLinus Torvalds * Unlock all of the transaction's items and free the transaction. 14411da177e4SLinus Torvalds * The transaction must not have modified any of its items, because 14421da177e4SLinus Torvalds * there is no way to restore them to their previous state. 14431da177e4SLinus Torvalds * 14441da177e4SLinus Torvalds * If the transaction has made a log reservation, make sure to release 14451da177e4SLinus Torvalds * it as well. 14461da177e4SLinus Torvalds */ 14471da177e4SLinus Torvalds void 14481da177e4SLinus Torvalds xfs_trans_cancel( 14491da177e4SLinus Torvalds xfs_trans_t *tp, 14501da177e4SLinus Torvalds int flags) 14511da177e4SLinus Torvalds { 14521da177e4SLinus Torvalds int log_flags; 14530733af21SRyan Hankins xfs_mount_t *mp = tp->t_mountp; 14541da177e4SLinus Torvalds 14551da177e4SLinus Torvalds /* 14561da177e4SLinus Torvalds * See if the caller is being too lazy to figure out if 14571da177e4SLinus Torvalds * the transaction really needs an abort. 14581da177e4SLinus Torvalds */ 14591da177e4SLinus Torvalds if ((flags & XFS_TRANS_ABORT) && !(tp->t_flags & XFS_TRANS_DIRTY)) 14601da177e4SLinus Torvalds flags &= ~XFS_TRANS_ABORT; 14611da177e4SLinus Torvalds /* 14621da177e4SLinus Torvalds * See if the caller is relying on us to shut down the 14631da177e4SLinus Torvalds * filesystem. This happens in paths where we detect 14641da177e4SLinus Torvalds * corruption and decide to give up. 14651da177e4SLinus Torvalds */ 146660a204f0SNathan Scott if ((tp->t_flags & XFS_TRANS_DIRTY) && !XFS_FORCED_SHUTDOWN(mp)) { 14670733af21SRyan Hankins XFS_ERROR_REPORT("xfs_trans_cancel", XFS_ERRLEVEL_LOW, mp); 14687d04a335SNathan Scott xfs_force_shutdown(mp, SHUTDOWN_CORRUPT_INCORE); 146960a204f0SNathan Scott } 14701da177e4SLinus Torvalds #ifdef DEBUG 1471e98c414fSChristoph Hellwig if (!(flags & XFS_TRANS_ABORT) && !XFS_FORCED_SHUTDOWN(mp)) { 1472e98c414fSChristoph Hellwig struct xfs_log_item_desc *lidp; 14731da177e4SLinus Torvalds 1474e98c414fSChristoph Hellwig list_for_each_entry(lidp, &tp->t_items, lid_trans) 1475e98c414fSChristoph Hellwig ASSERT(!(lidp->lid_item->li_type == XFS_LI_EFD)); 14761da177e4SLinus Torvalds } 14771da177e4SLinus Torvalds #endif 14781da177e4SLinus Torvalds xfs_trans_unreserve_and_mod_sb(tp); 14797d095257SChristoph Hellwig xfs_trans_unreserve_and_mod_dquots(tp); 14801da177e4SLinus Torvalds 14811da177e4SLinus Torvalds if (tp->t_ticket) { 14821da177e4SLinus Torvalds if (flags & XFS_TRANS_RELEASE_LOG_RES) { 14831da177e4SLinus Torvalds ASSERT(tp->t_flags & XFS_TRANS_PERM_LOG_RES); 14841da177e4SLinus Torvalds log_flags = XFS_LOG_REL_PERM_RESERV; 14851da177e4SLinus Torvalds } else { 14861da177e4SLinus Torvalds log_flags = 0; 14871da177e4SLinus Torvalds } 14880733af21SRyan Hankins xfs_log_done(mp, tp->t_ticket, NULL, log_flags); 14891da177e4SLinus Torvalds } 14901da177e4SLinus Torvalds 14911da177e4SLinus Torvalds /* mark this thread as no longer being in a transaction */ 149259c1b082SNathan Scott current_restore_flags_nested(&tp->t_pflags, PF_FSTRANS); 14931da177e4SLinus Torvalds 149471e330b5SDave Chinner xfs_trans_free_items(tp, NULLCOMMITLSN, flags); 14951da177e4SLinus Torvalds xfs_trans_free(tp); 14961da177e4SLinus Torvalds } 14971da177e4SLinus Torvalds 1498322ff6b8SNiv Sardi /* 1499322ff6b8SNiv Sardi * Roll from one trans in the sequence of PERMANENT transactions to 1500322ff6b8SNiv Sardi * the next: permanent transactions are only flushed out when 1501322ff6b8SNiv Sardi * committed with XFS_TRANS_RELEASE_LOG_RES, but we still want as soon 1502322ff6b8SNiv Sardi * as possible to let chunks of it go to the log. So we commit the 1503322ff6b8SNiv Sardi * chunk we've been working on and get a new transaction to continue. 1504322ff6b8SNiv Sardi */ 1505322ff6b8SNiv Sardi int 1506322ff6b8SNiv Sardi xfs_trans_roll( 1507322ff6b8SNiv Sardi struct xfs_trans **tpp, 1508322ff6b8SNiv Sardi struct xfs_inode *dp) 1509322ff6b8SNiv Sardi { 1510322ff6b8SNiv Sardi struct xfs_trans *trans; 1511322ff6b8SNiv Sardi unsigned int logres, count; 1512322ff6b8SNiv Sardi int error; 1513322ff6b8SNiv Sardi 1514322ff6b8SNiv Sardi /* 1515322ff6b8SNiv Sardi * Ensure that the inode is always logged. 1516322ff6b8SNiv Sardi */ 1517322ff6b8SNiv Sardi trans = *tpp; 1518322ff6b8SNiv Sardi xfs_trans_log_inode(trans, dp, XFS_ILOG_CORE); 1519322ff6b8SNiv Sardi 1520322ff6b8SNiv Sardi /* 1521322ff6b8SNiv Sardi * Copy the critical parameters from one trans to the next. 1522322ff6b8SNiv Sardi */ 1523322ff6b8SNiv Sardi logres = trans->t_log_res; 1524322ff6b8SNiv Sardi count = trans->t_log_count; 1525322ff6b8SNiv Sardi *tpp = xfs_trans_dup(trans); 1526322ff6b8SNiv Sardi 1527322ff6b8SNiv Sardi /* 1528322ff6b8SNiv Sardi * Commit the current transaction. 1529322ff6b8SNiv Sardi * If this commit failed, then it'd just unlock those items that 1530322ff6b8SNiv Sardi * are not marked ihold. That also means that a filesystem shutdown 1531322ff6b8SNiv Sardi * is in progress. The caller takes the responsibility to cancel 1532322ff6b8SNiv Sardi * the duplicate transaction that gets returned. 1533322ff6b8SNiv Sardi */ 1534322ff6b8SNiv Sardi error = xfs_trans_commit(trans, 0); 1535322ff6b8SNiv Sardi if (error) 1536322ff6b8SNiv Sardi return (error); 1537322ff6b8SNiv Sardi 1538322ff6b8SNiv Sardi trans = *tpp; 1539322ff6b8SNiv Sardi 1540322ff6b8SNiv Sardi /* 1541cc09c0dcSDave Chinner * transaction commit worked ok so we can drop the extra ticket 1542cc09c0dcSDave Chinner * reference that we gained in xfs_trans_dup() 1543cc09c0dcSDave Chinner */ 1544cc09c0dcSDave Chinner xfs_log_ticket_put(trans->t_ticket); 1545cc09c0dcSDave Chinner 1546cc09c0dcSDave Chinner 1547cc09c0dcSDave Chinner /* 1548322ff6b8SNiv Sardi * Reserve space in the log for th next transaction. 1549322ff6b8SNiv Sardi * This also pushes items in the "AIL", the list of logged items, 1550322ff6b8SNiv Sardi * out to disk if they are taking up space at the tail of the log 1551322ff6b8SNiv Sardi * that we want to use. This requires that either nothing be locked 1552322ff6b8SNiv Sardi * across this call, or that anything that is locked be logged in 1553322ff6b8SNiv Sardi * the prior and the next transactions. 1554322ff6b8SNiv Sardi */ 1555322ff6b8SNiv Sardi error = xfs_trans_reserve(trans, 0, logres, 0, 1556322ff6b8SNiv Sardi XFS_TRANS_PERM_LOG_RES, count); 1557322ff6b8SNiv Sardi /* 1558322ff6b8SNiv Sardi * Ensure that the inode is in the new transaction and locked. 1559322ff6b8SNiv Sardi */ 1560322ff6b8SNiv Sardi if (error) 1561322ff6b8SNiv Sardi return error; 1562322ff6b8SNiv Sardi 1563ddc3415aSChristoph Hellwig xfs_trans_ijoin(trans, dp, 0); 1564322ff6b8SNiv Sardi return 0; 1565322ff6b8SNiv Sardi } 1566