xfs_rtalloc.h

 1// SPDX-License-Identifier: GPL-2.0
 2/*
 3 * Copyright (c) 2000-2003,2005 Silicon Graphics, Inc.
 4 * All Rights Reserved.
 5 */
 6#ifndef __XFS_RTALLOC_H__
 7#define	__XFS_RTALLOC_H__
 8
 9/* kernel only definitions and functions */
10
11struct xfs_mount;
12struct xfs_trans;
13
14#ifdef CONFIG_XFS_RT
15/* rtgroup superblock initialization */
16int xfs_rtmount_readsb(struct xfs_mount *mp);
17void xfs_rtmount_freesb(struct xfs_mount *mp);
18
19/*
20 * Initialize realtime fields in the mount structure.
21 */
22int					/* error */
23xfs_rtmount_init(
24	struct xfs_mount	*mp);	/* file system mount structure */
25void
26xfs_rtunmount_inodes(
27	struct xfs_mount	*mp);
28
29/*
30 * Get the bitmap and summary inodes into the mount structure
31 * at mount time.
32 */
33int					/* error */
34xfs_rtmount_inodes(
35	struct xfs_mount	*mp);	/* file system mount structure */
36
37/*
38 * Grow the realtime area of the filesystem.
39 */
40int
41xfs_growfs_rt(
42	struct xfs_mount	*mp,	/* file system mount structure */
43	xfs_growfs_rt_t		*in);	/* user supplied growfs struct */
44
45int xfs_rtalloc_reinit_frextents(struct xfs_mount *mp);
46int xfs_growfs_check_rtgeom(const struct xfs_mount *mp, xfs_rfsblock_t dblocks,
47		xfs_rfsblock_t rblocks, xfs_agblock_t rextsize);
48#else
49# define xfs_growfs_rt(mp,in)				(-ENOSYS)
50# define xfs_rtalloc_reinit_frextents(m)		(0)
51# define xfs_rtmount_readsb(mp)				(0)
52# define xfs_rtmount_freesb(mp)				((void)0)
53static inline int		/* error */
54xfs_rtmount_init(
55	xfs_mount_t	*mp)	/* file system mount structure */
56{
57	if (mp->m_sb.sb_rblocks == 0)
58		return 0;
59
60	xfs_warn(mp, "Not built with CONFIG_XFS_RT");
61	return -ENOSYS;
62}
63# define xfs_rtmount_inodes(m)  (((mp)->m_sb.sb_rblocks == 0)? 0 : (-ENOSYS))
64# define xfs_rtunmount_inodes(m)
65
66static inline int
67xfs_growfs_check_rtgeom(const struct xfs_mount *mp,
68		xfs_rfsblock_t dblocks, xfs_rfsblock_t rblocks,
69		xfs_extlen_t rextsize)
70{
71	return 0;
72}
73#endif	/* CONFIG_XFS_RT */
74
75int xfs_rtallocate_rtgs(struct xfs_trans *tp, xfs_fsblock_t bno_hint,
76		xfs_rtxlen_t minlen, xfs_rtxlen_t maxlen, xfs_rtxlen_t prod,
77		bool wasdel, bool initial_user_data, xfs_rtblock_t *bno,
78		xfs_extlen_t *blen);
79
80#endif	/* __XFS_RTALLOC_H__ */