LXR linux/fs/xfs/xfs_inode

   1// SPDX-License-Identifier: GPL-2.0
   2/*
   3 * Copyright (c) 2000,2005 Silicon Graphics, Inc.
   4 * All Rights Reserved.
   5 */
   6#ifndef __XFS_INODE_ITEM_H__
   7#define __XFS_INODE_ITEM_H__
   8
   9/* kernel only definitions */
  10
  11struct xfs_buf;
  12struct xfs_bmbt_rec;
  13struct xfs_inode;
  14struct xfs_mount;
  15
  16struct xfs_inode_log_item {
  17        struct xfs_log_item     ili_item;          /* common portion */
  18        struct xfs_inode        *ili_inode;        /* inode ptr */
  19        unsigned short          ili_lock_flags;    /* inode lock flags */
  20        /*
  21         * The ili_lock protects the interactions between the dirty state and
  22         * the flush state of the inode log item. This allows us to do atomic
  23         * modifications of multiple state fields without having to hold a
  24         * specific inode lock to serialise them.
  25         *
  26         * We need atomic changes between inode dirtying, inode flushing and
  27         * inode completion, but these all hold different combinations of
  28         * ILOCK and IFLUSHING and hence we need some other method of
  29         * serialising updates to the flush state.
  30         */
  31        spinlock_t              ili_lock;          /* flush state lock */
  32        unsigned int            ili_last_fields;   /* fields when flushed */
  33        unsigned int            ili_fields;        /* fields to be logged */
  34        unsigned int            ili_fsync_fields;  /* logged since last fsync */
  35        xfs_lsn_t               ili_flush_lsn;     /* lsn at last flush */
  36        xfs_lsn_t               ili_last_lsn;      /* lsn at last transaction */
  37};
  38
  39static inline int xfs_inode_clean(struct xfs_inode *ip)
  40{
  41        return !ip->i_itemp || !(ip->i_itemp->ili_fields & XFS_ILOG_ALL);
  42}
  43
  44extern void xfs_inode_item_init(struct xfs_inode *, struct xfs_mount *);
  45extern void xfs_inode_item_destroy(struct xfs_inode *);
  46extern void xfs_iflush_abort(struct xfs_inode *);
  47extern int xfs_inode_item_format_convert(xfs_log_iovec_t *,
  48                                         struct xfs_inode_log_format *);
  49
  50extern struct kmem_zone *xfs_ili_zone;
  51
  52#endif  /* __XFS_INODE_ITEM_H__ */
  53