xfs_icreate_item.c
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/*
* Copyright (c) 2008-2010, 2013 Dave Chinner
* All Rights Reserved.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it would be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "xfs.h"
#include "xfs_fs.h"
#include "xfs_shared.h"
#include "xfs_format.h"
#include "xfs_log_format.h"
#include "xfs_trans_resv.h"
#include "xfs_bit.h"
#include "xfs_mount.h"
#include "xfs_trans.h"
#include "xfs_trans_priv.h"
#include "xfs_error.h"
#include "xfs_icreate_item.h"
#include "xfs_log.h"
kmem_zone_t *xfs_icreate_zone; /* inode create item zone */
static inline struct xfs_icreate_item *ICR_ITEM(struct xfs_log_item *lip)
{
return container_of(lip, struct xfs_icreate_item, ic_item);
}
/*
* This returns the number of iovecs needed to log the given inode item.
*
* We only need one iovec for the icreate log structure.
*/
STATIC void
xfs_icreate_item_size(
struct xfs_log_item *lip,
int *nvecs,
int *nbytes)
{
*nvecs += 1;
*nbytes += sizeof(struct xfs_icreate_log);
}
/*
* This is called to fill in the vector of log iovecs for the
* given inode create log item.
*/
STATIC void
xfs_icreate_item_format(
struct xfs_log_item *lip,
struct xfs_log_vec *lv)
{
struct xfs_icreate_item *icp = ICR_ITEM(lip);
struct xfs_log_iovec *vecp = NULL;
xlog_copy_iovec(lv, &vecp, XLOG_REG_TYPE_ICREATE,
&icp->ic_format,
sizeof(struct xfs_icreate_log));
}
/* Pinning has no meaning for the create item, so just return. */
STATIC void
xfs_icreate_item_pin(
struct xfs_log_item *lip)
{
}
/* pinning has no meaning for the create item, so just return. */
STATIC void
xfs_icreate_item_unpin(
struct xfs_log_item *lip,
int remove)
{
}
STATIC void
xfs_icreate_item_unlock(
struct xfs_log_item *lip)
{
struct xfs_icreate_item *icp = ICR_ITEM(lip);
if (icp->ic_item.li_flags & XFS_LI_ABORTED)
kmem_zone_free(xfs_icreate_zone, icp);
return;
}
/*
* Because we have ordered buffers being tracked in the AIL for the inode
* creation, we don't need the create item after this. Hence we can free
* the log item and return -1 to tell the caller we're done with the item.
*/
STATIC xfs_lsn_t
xfs_icreate_item_committed(
struct xfs_log_item *lip,
xfs_lsn_t lsn)
{
struct xfs_icreate_item *icp = ICR_ITEM(lip);
kmem_zone_free(xfs_icreate_zone, icp);
return (xfs_lsn_t)-1;
}
/* item can never get into the AIL */
STATIC uint
xfs_icreate_item_push(
struct xfs_log_item *lip,
struct list_head *buffer_list)
{
ASSERT(0);
return XFS_ITEM_SUCCESS;
}
/* Ordered buffers do the dependency tracking here, so this does nothing. */
STATIC void
xfs_icreate_item_committing(
struct xfs_log_item *lip,
xfs_lsn_t lsn)
{
}
/*
* This is the ops vector shared by all buf log items.
*/
static struct xfs_item_ops xfs_icreate_item_ops = {
.iop_size = xfs_icreate_item_size,
.iop_format = xfs_icreate_item_format,
.iop_pin = xfs_icreate_item_pin,
.iop_unpin = xfs_icreate_item_unpin,
.iop_push = xfs_icreate_item_push,
.iop_unlock = xfs_icreate_item_unlock,
.iop_committed = xfs_icreate_item_committed,
.iop_committing = xfs_icreate_item_committing,
};
/*
* Initialize the inode log item for a newly allocated (in-core) inode.
*
* Inode extents can only reside within an AG. Hence specify the starting
* block for the inode chunk by offset within an AG as well as the
* length of the allocated extent.
*
* This joins the item to the transaction and marks it dirty so
* that we don't need a separate call to do this, nor does the
* caller need to know anything about the icreate item.
*/
void
xfs_icreate_log(
struct xfs_trans *tp,
xfs_agnumber_t agno,
xfs_agblock_t agbno,
unsigned int count,
unsigned int inode_size,
xfs_agblock_t length,
unsigned int generation)
{
struct xfs_icreate_item *icp;
icp = kmem_zone_zalloc(xfs_icreate_zone, KM_SLEEP);
xfs_log_item_init(tp->t_mountp, &icp->ic_item, XFS_LI_ICREATE,
&xfs_icreate_item_ops);
icp->ic_format.icl_type = XFS_LI_ICREATE;
icp->ic_format.icl_size = 1; /* single vector */
icp->ic_format.icl_ag = cpu_to_be32(agno);
icp->ic_format.icl_agbno = cpu_to_be32(agbno);
icp->ic_format.icl_count = cpu_to_be32(count);
icp->ic_format.icl_isize = cpu_to_be32(inode_size);
icp->ic_format.icl_length = cpu_to_be32(length);
icp->ic_format.icl_gen = cpu_to_be32(generation);
xfs_trans_add_item(tp, &icp->ic_item);
tp->t_flags |= XFS_TRANS_DIRTY;
icp->ic_item.li_desc->lid_flags |= XFS_LID_DIRTY;
}