1// SPDX-License-Identifier: GPL-2.0
  2/*
  3 * Copyright (c) 2008-2010, 2013 Dave Chinner
  4 * All Rights Reserved.
  5 */
  6#include "xfs.h"
  7#include "xfs_fs.h"
  8#include "xfs_shared.h"
  9#include "xfs_log_format.h"
 10#include "xfs_trans.h"
 11#include "xfs_trans_priv.h"
 12#include "xfs_icreate_item.h"
 13#include "xfs_log.h"
 14
 15kmem_zone_t	*xfs_icreate_zone;		/* inode create item zone */
 16
 17static inline struct xfs_icreate_item *ICR_ITEM(struct xfs_log_item *lip)
 18{
 19	return container_of(lip, struct xfs_icreate_item, ic_item);
 20}
 21
 22/*
 23 * This returns the number of iovecs needed to log the given inode item.
 24 *
 25 * We only need one iovec for the icreate log structure.
 26 */
 27STATIC void
 28xfs_icreate_item_size(
 29	struct xfs_log_item	*lip,
 30	int			*nvecs,
 31	int			*nbytes)
 32{
 33	*nvecs += 1;
 34	*nbytes += sizeof(struct xfs_icreate_log);
 35}
 36
 37/*
 38 * This is called to fill in the vector of log iovecs for the
 39 * given inode create log item.
 40 */
 41STATIC void
 42xfs_icreate_item_format(
 43	struct xfs_log_item	*lip,
 44	struct xfs_log_vec	*lv)
 45{
 46	struct xfs_icreate_item	*icp = ICR_ITEM(lip);
 47	struct xfs_log_iovec	*vecp = NULL;
 48
 49	xlog_copy_iovec(lv, &vecp, XLOG_REG_TYPE_ICREATE,
 50			&icp->ic_format,
 51			sizeof(struct xfs_icreate_log));
 52}
 53
 54STATIC void
 55xfs_icreate_item_release(
 56	struct xfs_log_item	*lip)
 57{
 58	kmem_zone_free(xfs_icreate_zone, ICR_ITEM(lip));
 59}
 60
 61static const struct xfs_item_ops xfs_icreate_item_ops = {
 62	.flags		= XFS_ITEM_RELEASE_WHEN_COMMITTED,
 63	.iop_size	= xfs_icreate_item_size,
 64	.iop_format	= xfs_icreate_item_format,
 65	.iop_release	= xfs_icreate_item_release,
 66};
 67
 68
 69/*
 70 * Initialize the inode log item for a newly allocated (in-core) inode.
 71 *
 72 * Inode extents can only reside within an AG. Hence specify the starting
 73 * block for the inode chunk by offset within an AG as well as the
 74 * length of the allocated extent.
 75 *
 76 * This joins the item to the transaction and marks it dirty so
 77 * that we don't need a separate call to do this, nor does the
 78 * caller need to know anything about the icreate item.
 79 */
 80void
 81xfs_icreate_log(
 82	struct xfs_trans	*tp,
 83	xfs_agnumber_t		agno,
 84	xfs_agblock_t		agbno,
 85	unsigned int		count,
 86	unsigned int		inode_size,
 87	xfs_agblock_t		length,
 88	unsigned int		generation)
 89{
 90	struct xfs_icreate_item	*icp;
 91
 92	icp = kmem_zone_zalloc(xfs_icreate_zone, 0);
 93
 94	xfs_log_item_init(tp->t_mountp, &icp->ic_item, XFS_LI_ICREATE,
 95			  &xfs_icreate_item_ops);
 96
 97	icp->ic_format.icl_type = XFS_LI_ICREATE;
 98	icp->ic_format.icl_size = 1;	/* single vector */
 99	icp->ic_format.icl_ag = cpu_to_be32(agno);
100	icp->ic_format.icl_agbno = cpu_to_be32(agbno);
101	icp->ic_format.icl_count = cpu_to_be32(count);
102	icp->ic_format.icl_isize = cpu_to_be32(inode_size);
103	icp->ic_format.icl_length = cpu_to_be32(length);
104	icp->ic_format.icl_gen = cpu_to_be32(generation);
105
106	xfs_trans_add_item(tp, &icp->ic_item);
107	tp->t_flags |= XFS_TRANS_DIRTY;
108	set_bit(XFS_LI_DIRTY, &icp->ic_item.li_flags);
109}