linux/fs/xfs/xfs_inode_item.h
Dave Chinner aac855ab1a xfs: make inode IO completion buffer centric
Having different io completion callbacks for different inode states
makes things complex. We can detect if the inode is stale via the
XFS_ISTALE flag in IO completion, so we don't need a special
callback just for this.

This means inodes only have a single iodone callback, and inode IO
completion is entirely buffer centric at this point. Hence we no
longer need to use a log item callback at all as we can just call
xfs_iflush_done() directly from the buffer completions and walk the
buffer log item list to complete the all inodes under IO.

Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
2020-07-06 10:46:59 -07:00

54 lines
1.8 KiB
C

// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (c) 2000,2005 Silicon Graphics, Inc.
* All Rights Reserved.
*/
#ifndef __XFS_INODE_ITEM_H__
#define __XFS_INODE_ITEM_H__
/* kernel only definitions */
struct xfs_buf;
struct xfs_bmbt_rec;
struct xfs_inode;
struct xfs_mount;
struct xfs_inode_log_item {
struct xfs_log_item ili_item; /* common portion */
struct xfs_inode *ili_inode; /* inode ptr */
unsigned short ili_lock_flags; /* inode lock flags */
/*
* The ili_lock protects the interactions between the dirty state and
* the flush state of the inode log item. This allows us to do atomic
* modifications of multiple state fields without having to hold a
* specific inode lock to serialise them.
*
* We need atomic changes between inode dirtying, inode flushing and
* inode completion, but these all hold different combinations of
* ILOCK and iflock and hence we need some other method of serialising
* updates to the flush state.
*/
spinlock_t ili_lock; /* flush state lock */
unsigned int ili_last_fields; /* fields when flushed */
unsigned int ili_fields; /* fields to be logged */
unsigned int ili_fsync_fields; /* logged since last fsync */
xfs_lsn_t ili_flush_lsn; /* lsn at last flush */
xfs_lsn_t ili_last_lsn; /* lsn at last transaction */
};
static inline int xfs_inode_clean(struct xfs_inode *ip)
{
return !ip->i_itemp || !(ip->i_itemp->ili_fields & XFS_ILOG_ALL);
}
extern void xfs_inode_item_init(struct xfs_inode *, struct xfs_mount *);
extern void xfs_inode_item_destroy(struct xfs_inode *);
extern void xfs_iflush_done(struct xfs_buf *);
extern void xfs_iflush_abort(struct xfs_inode *);
extern int xfs_inode_item_format_convert(xfs_log_iovec_t *,
struct xfs_inode_log_format *);
extern struct kmem_zone *xfs_ili_zone;
#endif /* __XFS_INODE_ITEM_H__ */