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1// SPDX-License-Identifier: GPL-2.02/*3 * Copyright (c) 2008-2010, 2013 Dave Chinner4 * All Rights Reserved.5 */6#include "xfs.h"7#include "xfs_fs.h"8#include "xfs_shared.h"9#include "xfs_format.h"10#include "xfs_log_format.h"11#include "xfs_trans_resv.h"12#include "xfs_mount.h"13#include "xfs_inode.h"14#include "xfs_trans.h"15#include "xfs_trans_priv.h"16#include "xfs_icreate_item.h"17#include "xfs_log.h"18#include "xfs_log_priv.h"19#include "xfs_log_recover.h"20#include "xfs_ialloc.h"21#include "xfs_trace.h"22 23struct kmem_cache *xfs_icreate_cache; /* inode create item */24 25static inline struct xfs_icreate_item *ICR_ITEM(struct xfs_log_item *lip)26{27 return container_of(lip, struct xfs_icreate_item, ic_item);28}29 30/*31 * This returns the number of iovecs needed to log the given inode item.32 *33 * We only need one iovec for the icreate log structure.34 */35STATIC void36xfs_icreate_item_size(37 struct xfs_log_item *lip,38 int *nvecs,39 int *nbytes)40{41 *nvecs += 1;42 *nbytes += sizeof(struct xfs_icreate_log);43}44 45/*46 * This is called to fill in the vector of log iovecs for the47 * given inode create log item.48 */49STATIC void50xfs_icreate_item_format(51 struct xfs_log_item *lip,52 struct xfs_log_vec *lv)53{54 struct xfs_icreate_item *icp = ICR_ITEM(lip);55 struct xfs_log_iovec *vecp = NULL;56 57 xlog_copy_iovec(lv, &vecp, XLOG_REG_TYPE_ICREATE,58 &icp->ic_format,59 sizeof(struct xfs_icreate_log));60}61 62STATIC void63xfs_icreate_item_release(64 struct xfs_log_item *lip)65{66 kvfree(ICR_ITEM(lip)->ic_item.li_lv_shadow);67 kmem_cache_free(xfs_icreate_cache, ICR_ITEM(lip));68}69 70static const struct xfs_item_ops xfs_icreate_item_ops = {71 .flags = XFS_ITEM_RELEASE_WHEN_COMMITTED,72 .iop_size = xfs_icreate_item_size,73 .iop_format = xfs_icreate_item_format,74 .iop_release = xfs_icreate_item_release,75};76 77 78/*79 * Initialize the inode log item for a newly allocated (in-core) inode.80 *81 * Inode extents can only reside within an AG. Hence specify the starting82 * block for the inode chunk by offset within an AG as well as the83 * length of the allocated extent.84 *85 * This joins the item to the transaction and marks it dirty so86 * that we don't need a separate call to do this, nor does the87 * caller need to know anything about the icreate item.88 */89void90xfs_icreate_log(91 struct xfs_trans *tp,92 xfs_agnumber_t agno,93 xfs_agblock_t agbno,94 unsigned int count,95 unsigned int inode_size,96 xfs_agblock_t length,97 unsigned int generation)98{99 struct xfs_icreate_item *icp;100 101 icp = kmem_cache_zalloc(xfs_icreate_cache, GFP_KERNEL | __GFP_NOFAIL);102 103 xfs_log_item_init(tp->t_mountp, &icp->ic_item, XFS_LI_ICREATE,104 &xfs_icreate_item_ops);105 106 icp->ic_format.icl_type = XFS_LI_ICREATE;107 icp->ic_format.icl_size = 1; /* single vector */108 icp->ic_format.icl_ag = cpu_to_be32(agno);109 icp->ic_format.icl_agbno = cpu_to_be32(agbno);110 icp->ic_format.icl_count = cpu_to_be32(count);111 icp->ic_format.icl_isize = cpu_to_be32(inode_size);112 icp->ic_format.icl_length = cpu_to_be32(length);113 icp->ic_format.icl_gen = cpu_to_be32(generation);114 115 xfs_trans_add_item(tp, &icp->ic_item);116 tp->t_flags |= XFS_TRANS_DIRTY;117 set_bit(XFS_LI_DIRTY, &icp->ic_item.li_flags);118}119 120static enum xlog_recover_reorder121xlog_recover_icreate_reorder(122 struct xlog_recover_item *item)123{124 /*125 * Inode allocation buffers must be replayed before subsequent inode126 * items try to modify those buffers. ICREATE items are the logical127 * equivalent of logging a newly initialized inode buffer, so recover128 * these at the same time that we recover logged buffers.129 */130 return XLOG_REORDER_BUFFER_LIST;131}132 133/*134 * This routine is called when an inode create format structure is found in a135 * committed transaction in the log. It's purpose is to initialise the inodes136 * being allocated on disk. This requires us to get inode cluster buffers that137 * match the range to be initialised, stamped with inode templates and written138 * by delayed write so that subsequent modifications will hit the cached buffer139 * and only need writing out at the end of recovery.140 */141STATIC int142xlog_recover_icreate_commit_pass2(143 struct xlog *log,144 struct list_head *buffer_list,145 struct xlog_recover_item *item,146 xfs_lsn_t lsn)147{148 struct xfs_mount *mp = log->l_mp;149 struct xfs_icreate_log *icl;150 struct xfs_ino_geometry *igeo = M_IGEO(mp);151 xfs_agnumber_t agno;152 xfs_agblock_t agbno;153 unsigned int count;154 unsigned int isize;155 xfs_agblock_t length;156 int bb_per_cluster;157 int cancel_count;158 int nbufs;159 int i;160 161 icl = (struct xfs_icreate_log *)item->ri_buf[0].i_addr;162 if (icl->icl_type != XFS_LI_ICREATE) {163 xfs_warn(log->l_mp, "xlog_recover_do_icreate_trans: bad type");164 return -EINVAL;165 }166 167 if (icl->icl_size != 1) {168 xfs_warn(log->l_mp, "xlog_recover_do_icreate_trans: bad icl size");169 return -EINVAL;170 }171 172 agno = be32_to_cpu(icl->icl_ag);173 if (agno >= mp->m_sb.sb_agcount) {174 xfs_warn(log->l_mp, "xlog_recover_do_icreate_trans: bad agno");175 return -EINVAL;176 }177 agbno = be32_to_cpu(icl->icl_agbno);178 if (!agbno || agbno == NULLAGBLOCK || agbno >= mp->m_sb.sb_agblocks) {179 xfs_warn(log->l_mp, "xlog_recover_do_icreate_trans: bad agbno");180 return -EINVAL;181 }182 isize = be32_to_cpu(icl->icl_isize);183 if (isize != mp->m_sb.sb_inodesize) {184 xfs_warn(log->l_mp, "xlog_recover_do_icreate_trans: bad isize");185 return -EINVAL;186 }187 count = be32_to_cpu(icl->icl_count);188 if (!count) {189 xfs_warn(log->l_mp, "xlog_recover_do_icreate_trans: bad count");190 return -EINVAL;191 }192 length = be32_to_cpu(icl->icl_length);193 if (!length || length >= mp->m_sb.sb_agblocks) {194 xfs_warn(log->l_mp, "xlog_recover_do_icreate_trans: bad length");195 return -EINVAL;196 }197 198 /*199 * The inode chunk is either full or sparse and we only support200 * m_ino_geo.ialloc_min_blks sized sparse allocations at this time.201 */202 if (length != igeo->ialloc_blks &&203 length != igeo->ialloc_min_blks) {204 xfs_warn(log->l_mp,205 "%s: unsupported chunk length", __func__);206 return -EINVAL;207 }208 209 /* verify inode count is consistent with extent length */210 if ((count >> mp->m_sb.sb_inopblog) != length) {211 xfs_warn(log->l_mp,212 "%s: inconsistent inode count and chunk length",213 __func__);214 return -EINVAL;215 }216 217 /*218 * The icreate transaction can cover multiple cluster buffers and these219 * buffers could have been freed and reused. Check the individual220 * buffers for cancellation so we don't overwrite anything written after221 * a cancellation.222 */223 bb_per_cluster = XFS_FSB_TO_BB(mp, igeo->blocks_per_cluster);224 nbufs = length / igeo->blocks_per_cluster;225 for (i = 0, cancel_count = 0; i < nbufs; i++) {226 xfs_daddr_t daddr;227 228 daddr = XFS_AGB_TO_DADDR(mp, agno,229 agbno + i * igeo->blocks_per_cluster);230 if (xlog_is_buffer_cancelled(log, daddr, bb_per_cluster))231 cancel_count++;232 }233 234 /*235 * We currently only use icreate for a single allocation at a time. This236 * means we should expect either all or none of the buffers to be237 * cancelled. Be conservative and skip replay if at least one buffer is238 * cancelled, but warn the user that something is awry if the buffers239 * are not consistent.240 *241 * XXX: This must be refined to only skip cancelled clusters once we use242 * icreate for multiple chunk allocations.243 */244 ASSERT(!cancel_count || cancel_count == nbufs);245 if (cancel_count) {246 if (cancel_count != nbufs)247 xfs_warn(mp,248 "WARNING: partial inode chunk cancellation, skipped icreate.");249 trace_xfs_log_recover_icreate_cancel(log, icl);250 return 0;251 }252 253 trace_xfs_log_recover_icreate_recover(log, icl);254 return xfs_ialloc_inode_init(mp, NULL, buffer_list, count, agno, agbno,255 length, be32_to_cpu(icl->icl_gen));256}257 258const struct xlog_recover_item_ops xlog_icreate_item_ops = {259 .item_type = XFS_LI_ICREATE,260 .reorder = xlog_recover_icreate_reorder,261 .commit_pass2 = xlog_recover_icreate_commit_pass2,262};263