linux/fs/xfs/xfs_icreate_item.c

// SPDX-License-Identifier: GPL-2.0
/*
 * Copyright (c) 2008-2010, 2013 Dave Chinner
 * All Rights Reserved.
 */
#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_mount.h"
#include "xfs_inode.h"
#include "xfs_trans.h"
#include "xfs_trans_priv.h"
#include "xfs_icreate_item.h"
#include "xfs_log.h"
#include "xfs_log_priv.h"
#include "xfs_log_recover.h"
#include "xfs_ialloc.h"
#include "xfs_trace.h"

struct kmem_cache	*xfs_icreate_cache;		/* inode create item */

static inline struct xfs_icreate_item *ICR_ITEM(struct xfs_log_item *lip)
{ … }

/*
 * 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)
{ … }

/*
 * 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)
{ … }

STATIC void
xfs_icreate_item_release(
	struct xfs_log_item	*lip)
{ … }

static const struct xfs_item_ops xfs_icreate_item_ops = …;


/*
 * 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)
{ … }

static enum xlog_recover_reorder
xlog_recover_icreate_reorder(
		struct xlog_recover_item *item)
{ … }

/*
 * This routine is called when an inode create format structure is found in a
 * committed transaction in the log.  It's purpose is to initialise the inodes
 * being allocated on disk. This requires us to get inode cluster buffers that
 * match the range to be initialised, stamped with inode templates and written
 * by delayed write so that subsequent modifications will hit the cached buffer
 * and only need writing out at the end of recovery.
 */
STATIC int
xlog_recover_icreate_commit_pass2(
	struct xlog			*log,
	struct list_head		*buffer_list,
	struct xlog_recover_item	*item,
	xfs_lsn_t			lsn)
{ … }

const struct xlog_recover_item_ops xlog_icreate_item_ops = …;