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![Carlos Maiolino](/assets/img/avatar_default.png)
Use kmem_cache_zalloc() directly. With the exception of xlog_ticket_alloc() which will be dealt on the next patch for readability. Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Carlos Maiolino <cmaiolino@redhat.com> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Dave Chinner <dchinner@redhat.com>
261 lines
7.5 KiB
C
261 lines
7.5 KiB
C
// 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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kmem_zone_t *xfs_icreate_zone; /* inode create item zone */
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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_zone, 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_zone, 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", __FUNCTION__);
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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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__FUNCTION__);
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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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