fs/xfs/xfs_inode_item.h

   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
  11 struct xfs_buf;
  12 struct xfs_bmbt_rec;
  13 struct xfs_inode;
  14 struct xfs_mount;
  15
  16 struct 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         unsigned int            ili_dirty_flags;   /* dirty in current tx */
  21         /*
  22          * The ili_lock protects the interactions between the dirty state and
  23          * the flush state of the inode log item. This allows us to do atomic
  24          * modifications of multiple state fields without having to hold a
  25          * specific inode lock to serialise them.
  26          *
  27          * We need atomic changes between inode dirtying, inode flushing and
  28          * inode completion, but these all hold different combinations of
  29          * ILOCK and IFLUSHING and hence we need some other method of
  30          * serialising updates to the flush state.
  31          */
  32         spinlock_t              ili_lock;          /* flush state lock */
  33         unsigned int            ili_last_fields;   /* fields when flushed */
  34         unsigned int            ili_fields;        /* fields to be logged */
  35         unsigned int            ili_fsync_fields;  /* logged since last fsync */
  36         xfs_lsn_t               ili_flush_lsn;     /* lsn at last flush */
  37         xfs_csn_t               ili_commit_seq;    /* last transaction commit */
  38 };
  39
  40 static inline int xfs_inode_clean(struct xfs_inode *ip)
  41 {
  42         return !ip->i_itemp || !(ip->i_itemp->ili_fields & XFS_ILOG_ALL);
  43 }
  44
  45 extern void xfs_inode_item_init(struct xfs_inode *, struct xfs_mount *);
  46 extern void xfs_inode_item_destroy(struct xfs_inode *);
  47 extern void xfs_iflush_abort(struct xfs_inode *);
  48 extern void xfs_iflush_shutdown_abort(struct xfs_inode *);
  49 extern int xfs_inode_item_format_convert(xfs_log_iovec_t *,
  50                                          struct xfs_inode_log_format *);
  51
  52 extern struct kmem_cache        *xfs_ili_cache;
  53
  54 #endif  /* __XFS_INODE_ITEM_H__ */