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261 lines
7.5 KiB
261 lines
7.5 KiB
// SPDX-License-Identifier: GPL-2.0 |
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/* |
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* Copyright (c) 2008-2010, 2013 Dave Chinner |
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* All Rights Reserved. |
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*/ |
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#include "xfs.h" |
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#include "xfs_fs.h" |
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#include "xfs_shared.h" |
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#include "xfs_format.h" |
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#include "xfs_log_format.h" |
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#include "xfs_trans_resv.h" |
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#include "xfs_mount.h" |
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#include "xfs_inode.h" |
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#include "xfs_trans.h" |
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#include "xfs_trans_priv.h" |
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#include "xfs_icreate_item.h" |
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#include "xfs_log.h" |
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#include "xfs_log_priv.h" |
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#include "xfs_log_recover.h" |
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#include "xfs_ialloc.h" |
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#include "xfs_trace.h" |
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struct kmem_cache *xfs_icreate_cache; /* inode create item */ |
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static inline struct xfs_icreate_item *ICR_ITEM(struct xfs_log_item *lip) |
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{ |
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return container_of(lip, struct xfs_icreate_item, ic_item); |
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} |
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/* |
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* This returns the number of iovecs needed to log the given inode item. |
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* |
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* We only need one iovec for the icreate log structure. |
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*/ |
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STATIC void |
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xfs_icreate_item_size( |
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struct xfs_log_item *lip, |
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int *nvecs, |
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int *nbytes) |
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{ |
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*nvecs += 1; |
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*nbytes += sizeof(struct xfs_icreate_log); |
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} |
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/* |
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* This is called to fill in the vector of log iovecs for the |
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* given inode create log item. |
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*/ |
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STATIC void |
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xfs_icreate_item_format( |
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struct xfs_log_item *lip, |
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struct xfs_log_vec *lv) |
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{ |
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struct xfs_icreate_item *icp = ICR_ITEM(lip); |
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struct xfs_log_iovec *vecp = NULL; |
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xlog_copy_iovec(lv, &vecp, XLOG_REG_TYPE_ICREATE, |
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&icp->ic_format, |
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sizeof(struct xfs_icreate_log)); |
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} |
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STATIC void |
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xfs_icreate_item_release( |
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struct xfs_log_item *lip) |
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{ |
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kmem_cache_free(xfs_icreate_cache, ICR_ITEM(lip)); |
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} |
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static const struct xfs_item_ops xfs_icreate_item_ops = { |
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.flags = XFS_ITEM_RELEASE_WHEN_COMMITTED, |
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.iop_size = xfs_icreate_item_size, |
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.iop_format = xfs_icreate_item_format, |
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.iop_release = xfs_icreate_item_release, |
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}; |
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/* |
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* Initialize the inode log item for a newly allocated (in-core) inode. |
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* |
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* Inode extents can only reside within an AG. Hence specify the starting |
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* block for the inode chunk by offset within an AG as well as the |
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* length of the allocated extent. |
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* |
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* This joins the item to the transaction and marks it dirty so |
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* that we don't need a separate call to do this, nor does the |
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* caller need to know anything about the icreate item. |
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*/ |
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void |
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xfs_icreate_log( |
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struct xfs_trans *tp, |
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xfs_agnumber_t agno, |
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xfs_agblock_t agbno, |
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unsigned int count, |
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unsigned int inode_size, |
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xfs_agblock_t length, |
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unsigned int generation) |
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{ |
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struct xfs_icreate_item *icp; |
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icp = kmem_cache_zalloc(xfs_icreate_cache, GFP_KERNEL | __GFP_NOFAIL); |
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xfs_log_item_init(tp->t_mountp, &icp->ic_item, XFS_LI_ICREATE, |
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&xfs_icreate_item_ops); |
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icp->ic_format.icl_type = XFS_LI_ICREATE; |
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icp->ic_format.icl_size = 1; /* single vector */ |
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icp->ic_format.icl_ag = cpu_to_be32(agno); |
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icp->ic_format.icl_agbno = cpu_to_be32(agbno); |
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icp->ic_format.icl_count = cpu_to_be32(count); |
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icp->ic_format.icl_isize = cpu_to_be32(inode_size); |
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icp->ic_format.icl_length = cpu_to_be32(length); |
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icp->ic_format.icl_gen = cpu_to_be32(generation); |
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xfs_trans_add_item(tp, &icp->ic_item); |
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tp->t_flags |= XFS_TRANS_DIRTY; |
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set_bit(XFS_LI_DIRTY, &icp->ic_item.li_flags); |
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} |
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static enum xlog_recover_reorder |
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xlog_recover_icreate_reorder( |
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struct xlog_recover_item *item) |
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{ |
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/* |
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* Inode allocation buffers must be replayed before subsequent inode |
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* items try to modify those buffers. ICREATE items are the logical |
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* equivalent of logging a newly initialized inode buffer, so recover |
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* these at the same time that we recover logged buffers. |
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*/ |
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return XLOG_REORDER_BUFFER_LIST; |
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} |
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/* |
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* This routine is called when an inode create format structure is found in a |
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* committed transaction in the log. It's purpose is to initialise the inodes |
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* being allocated on disk. This requires us to get inode cluster buffers that |
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* match the range to be initialised, stamped with inode templates and written |
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* by delayed write so that subsequent modifications will hit the cached buffer |
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* and only need writing out at the end of recovery. |
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*/ |
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STATIC int |
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xlog_recover_icreate_commit_pass2( |
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struct xlog *log, |
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struct list_head *buffer_list, |
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struct xlog_recover_item *item, |
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xfs_lsn_t lsn) |
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{ |
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struct xfs_mount *mp = log->l_mp; |
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struct xfs_icreate_log *icl; |
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struct xfs_ino_geometry *igeo = M_IGEO(mp); |
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xfs_agnumber_t agno; |
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xfs_agblock_t agbno; |
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unsigned int count; |
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unsigned int isize; |
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xfs_agblock_t length; |
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int bb_per_cluster; |
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int cancel_count; |
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int nbufs; |
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int i; |
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icl = (struct xfs_icreate_log *)item->ri_buf[0].i_addr; |
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if (icl->icl_type != XFS_LI_ICREATE) { |
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xfs_warn(log->l_mp, "xlog_recover_do_icreate_trans: bad type"); |
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return -EINVAL; |
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} |
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if (icl->icl_size != 1) { |
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xfs_warn(log->l_mp, "xlog_recover_do_icreate_trans: bad icl size"); |
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return -EINVAL; |
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} |
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agno = be32_to_cpu(icl->icl_ag); |
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if (agno >= mp->m_sb.sb_agcount) { |
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xfs_warn(log->l_mp, "xlog_recover_do_icreate_trans: bad agno"); |
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return -EINVAL; |
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} |
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agbno = be32_to_cpu(icl->icl_agbno); |
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if (!agbno || agbno == NULLAGBLOCK || agbno >= mp->m_sb.sb_agblocks) { |
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xfs_warn(log->l_mp, "xlog_recover_do_icreate_trans: bad agbno"); |
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return -EINVAL; |
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} |
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isize = be32_to_cpu(icl->icl_isize); |
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if (isize != mp->m_sb.sb_inodesize) { |
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xfs_warn(log->l_mp, "xlog_recover_do_icreate_trans: bad isize"); |
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return -EINVAL; |
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} |
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count = be32_to_cpu(icl->icl_count); |
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if (!count) { |
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xfs_warn(log->l_mp, "xlog_recover_do_icreate_trans: bad count"); |
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return -EINVAL; |
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} |
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length = be32_to_cpu(icl->icl_length); |
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if (!length || length >= mp->m_sb.sb_agblocks) { |
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xfs_warn(log->l_mp, "xlog_recover_do_icreate_trans: bad length"); |
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return -EINVAL; |
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} |
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/* |
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* The inode chunk is either full or sparse and we only support |
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* m_ino_geo.ialloc_min_blks sized sparse allocations at this time. |
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*/ |
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if (length != igeo->ialloc_blks && |
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length != igeo->ialloc_min_blks) { |
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xfs_warn(log->l_mp, |
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"%s: unsupported chunk length", __func__); |
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return -EINVAL; |
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} |
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/* verify inode count is consistent with extent length */ |
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if ((count >> mp->m_sb.sb_inopblog) != length) { |
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xfs_warn(log->l_mp, |
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"%s: inconsistent inode count and chunk length", |
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__func__); |
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return -EINVAL; |
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} |
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/* |
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* The icreate transaction can cover multiple cluster buffers and these |
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* buffers could have been freed and reused. Check the individual |
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* buffers for cancellation so we don't overwrite anything written after |
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* a cancellation. |
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*/ |
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bb_per_cluster = XFS_FSB_TO_BB(mp, igeo->blocks_per_cluster); |
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nbufs = length / igeo->blocks_per_cluster; |
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for (i = 0, cancel_count = 0; i < nbufs; i++) { |
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xfs_daddr_t daddr; |
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daddr = XFS_AGB_TO_DADDR(mp, agno, |
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agbno + i * igeo->blocks_per_cluster); |
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if (xlog_is_buffer_cancelled(log, daddr, bb_per_cluster)) |
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cancel_count++; |
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} |
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/* |
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* We currently only use icreate for a single allocation at a time. This |
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* means we should expect either all or none of the buffers to be |
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* cancelled. Be conservative and skip replay if at least one buffer is |
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* cancelled, but warn the user that something is awry if the buffers |
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* are not consistent. |
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* |
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* XXX: This must be refined to only skip cancelled clusters once we use |
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* icreate for multiple chunk allocations. |
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*/ |
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ASSERT(!cancel_count || cancel_count == nbufs); |
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if (cancel_count) { |
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if (cancel_count != nbufs) |
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xfs_warn(mp, |
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"WARNING: partial inode chunk cancellation, skipped icreate."); |
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trace_xfs_log_recover_icreate_cancel(log, icl); |
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return 0; |
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} |
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trace_xfs_log_recover_icreate_recover(log, icl); |
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return xfs_ialloc_inode_init(mp, NULL, buffer_list, count, agno, agbno, |
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length, be32_to_cpu(icl->icl_gen)); |
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} |
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const struct xlog_recover_item_ops xlog_icreate_item_ops = { |
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.item_type = XFS_LI_ICREATE, |
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.reorder = xlog_recover_icreate_reorder, |
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.commit_pass2 = xlog_recover_icreate_commit_pass2, |
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};
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