1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0 2*4882a593Smuzhiyun /* 3*4882a593Smuzhiyun * Copyright (c) 2000,2005 Silicon Graphics, Inc. 4*4882a593Smuzhiyun * All Rights Reserved. 5*4882a593Smuzhiyun */ 6*4882a593Smuzhiyun #ifndef __XFS_INODE_ITEM_H__ 7*4882a593Smuzhiyun #define __XFS_INODE_ITEM_H__ 8*4882a593Smuzhiyun 9*4882a593Smuzhiyun /* kernel only definitions */ 10*4882a593Smuzhiyun 11*4882a593Smuzhiyun struct xfs_buf; 12*4882a593Smuzhiyun struct xfs_bmbt_rec; 13*4882a593Smuzhiyun struct xfs_inode; 14*4882a593Smuzhiyun struct xfs_mount; 15*4882a593Smuzhiyun 16*4882a593Smuzhiyun struct xfs_inode_log_item { 17*4882a593Smuzhiyun struct xfs_log_item ili_item; /* common portion */ 18*4882a593Smuzhiyun struct xfs_inode *ili_inode; /* inode ptr */ 19*4882a593Smuzhiyun unsigned short ili_lock_flags; /* inode lock flags */ 20*4882a593Smuzhiyun /* 21*4882a593Smuzhiyun * The ili_lock protects the interactions between the dirty state and 22*4882a593Smuzhiyun * the flush state of the inode log item. This allows us to do atomic 23*4882a593Smuzhiyun * modifications of multiple state fields without having to hold a 24*4882a593Smuzhiyun * specific inode lock to serialise them. 25*4882a593Smuzhiyun * 26*4882a593Smuzhiyun * We need atomic changes between inode dirtying, inode flushing and 27*4882a593Smuzhiyun * inode completion, but these all hold different combinations of 28*4882a593Smuzhiyun * ILOCK and IFLUSHING and hence we need some other method of 29*4882a593Smuzhiyun * serialising updates to the flush state. 30*4882a593Smuzhiyun */ 31*4882a593Smuzhiyun spinlock_t ili_lock; /* flush state lock */ 32*4882a593Smuzhiyun unsigned int ili_last_fields; /* fields when flushed */ 33*4882a593Smuzhiyun unsigned int ili_fields; /* fields to be logged */ 34*4882a593Smuzhiyun unsigned int ili_fsync_fields; /* logged since last fsync */ 35*4882a593Smuzhiyun xfs_lsn_t ili_flush_lsn; /* lsn at last flush */ 36*4882a593Smuzhiyun xfs_csn_t ili_commit_seq; /* last transaction commit */ 37*4882a593Smuzhiyun }; 38*4882a593Smuzhiyun xfs_inode_clean(struct xfs_inode * ip)39*4882a593Smuzhiyunstatic inline int xfs_inode_clean(struct xfs_inode *ip) 40*4882a593Smuzhiyun { 41*4882a593Smuzhiyun return !ip->i_itemp || !(ip->i_itemp->ili_fields & XFS_ILOG_ALL); 42*4882a593Smuzhiyun } 43*4882a593Smuzhiyun 44*4882a593Smuzhiyun extern void xfs_inode_item_init(struct xfs_inode *, struct xfs_mount *); 45*4882a593Smuzhiyun extern void xfs_inode_item_destroy(struct xfs_inode *); 46*4882a593Smuzhiyun extern void xfs_iflush_abort(struct xfs_inode *); 47*4882a593Smuzhiyun extern int xfs_inode_item_format_convert(xfs_log_iovec_t *, 48*4882a593Smuzhiyun struct xfs_inode_log_format *); 49*4882a593Smuzhiyun 50*4882a593Smuzhiyun extern struct kmem_zone *xfs_ili_zone; 51*4882a593Smuzhiyun 52*4882a593Smuzhiyun #endif /* __XFS_INODE_ITEM_H__ */ 53