tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
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linux
1/*
2 * Copyright (c) 2006-2007 Silicon Graphics, Inc.
3 * All Rights Reserved.
4 *
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License as
7 * published by the Free Software Foundation.
8 *
9 * This program is distributed in the hope that it would be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write the Free Software Foundation,
16 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
17 */
18#ifndef __XFS_FILESTREAM_H__
19#define __XFS_FILESTREAM_H__
20
21struct xfs_mount;
22struct xfs_inode;
23struct xfs_perag;
24struct xfs_bmalloca;
25
26#ifdef XFS_FILESTREAMS_TRACE
27#define XFS_FSTRM_KTRACE_INFO 1
28#define XFS_FSTRM_KTRACE_AGSCAN 2
29#define XFS_FSTRM_KTRACE_AGPICK1 3
30#define XFS_FSTRM_KTRACE_AGPICK2 4
31#define XFS_FSTRM_KTRACE_UPDATE 5
32#define XFS_FSTRM_KTRACE_FREE 6
33#define XFS_FSTRM_KTRACE_ITEM_LOOKUP 7
34#define XFS_FSTRM_KTRACE_ASSOCIATE 8
35#define XFS_FSTRM_KTRACE_MOVEAG 9
36#define XFS_FSTRM_KTRACE_ORPHAN 10
37
38#define XFS_FSTRM_KTRACE_SIZE 16384
39extern ktrace_t *xfs_filestreams_trace_buf;
40
41#endif
42
43/* allocation selection flags */
44typedef enum xfs_fstrm_alloc {
45 XFS_PICK_USERDATA = 1,
46 XFS_PICK_LOWSPACE = 2,
47} xfs_fstrm_alloc_t;
48
49/* prototypes for filestream.c */
50int xfs_filestream_init(void);
51void xfs_filestream_uninit(void);
52int xfs_filestream_mount(struct xfs_mount *mp);
53void xfs_filestream_unmount(struct xfs_mount *mp);
54xfs_agnumber_t xfs_filestream_lookup_ag(struct xfs_inode *ip);
55int xfs_filestream_associate(struct xfs_inode *dip, struct xfs_inode *ip);
56void xfs_filestream_deassociate(struct xfs_inode *ip);
57int xfs_filestream_new_ag(struct xfs_bmalloca *ap, xfs_agnumber_t *agp);
58
59
60/* filestreams for the inode? */
61static inline int
62xfs_inode_is_filestream(
63 struct xfs_inode *ip)
64{
65 return (ip->i_mount->m_flags & XFS_MOUNT_FILESTREAMS) ||
66 xfs_iflags_test(ip, XFS_IFILESTREAM) ||
67 (ip->i_d.di_flags & XFS_DIFLAG_FILESTREAM);
68}
69
70#endif /* __XFS_FILESTREAM_H__ */