projects / linux-2.6-block.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
ALSA: hda - Fix pending unsol events at shutdown
[linux-2.6-block.git] / fs / ocfs2 / dlmglue.h
CommitLineData
328970de 1/* SPDX-License-Identifier: GPL-2.0-or-later */
ccd979bd
MF		 2/* -*- mode: c; c-basic-offset: 8; -*-
3 * vim: noexpandtab sw=8 ts=8 sts=0:
4 *
5 * dlmglue.h
6 *
7 * description here
8 *
9 * Copyright (C) 2002, 2004 Oracle. All rights reserved.
ccd979bd
MF		 10 */
11
12
13#ifndef DLMGLUE_H
14#define DLMGLUE_H
15
d680efe9
MF		 16#include "dcache.h"
17
15b1e36b 18#define OCFS2_LVB_VERSION 5
ccd979bd
MF		 19
20struct ocfs2_meta_lvb {
4d3b83f7 21 __u8 lvb_version;
24c19ef4 22 __u8 lvb_reserved0;
15b1e36b 23 __be16 lvb_idynfeatures;
ccd979bd
MF		 24 __be32 lvb_iclusters;
25 __be32 lvb_iuid;
26 __be32 lvb_igid;
27 __be64 lvb_iatime_packed;
28 __be64 lvb_ictime_packed;
29 __be64 lvb_imtime_packed;
30 __be64 lvb_isize;
31 __be16 lvb_imode;
32 __be16 lvb_inlink;
ca4d147e 33 __be32 lvb_iattr;
f9e2d82e
MF		 34 __be32 lvb_igeneration;
35 __be32 lvb_reserved2;
ccd979bd
MF		 36};
37
9e33d69f
JK		 38#define OCFS2_QINFO_LVB_VERSION 1
39
40struct ocfs2_qinfo_lvb {
41 __u8 lvb_version;
42 __u8 lvb_reserved[3];
43 __be32 lvb_bgrace;
44 __be32 lvb_igrace;
45 __be32 lvb_syncms;
46 __be32 lvb_blocks;
47 __be32 lvb_free_blk;
48 __be32 lvb_free_entry;
49};
50
83273932
SE		 51#define OCFS2_ORPHAN_LVB_VERSION 1
52
53struct ocfs2_orphan_scan_lvb {
54 __u8 lvb_version;
55 __u8 lvb_reserved[3];
56 __be32 lvb_os_seqno;
57};
58
4882abeb
GH		 59#define OCFS2_TRIMFS_LVB_VERSION 1
60
61struct ocfs2_trim_fs_lvb {
62 __u8 lvb_version;
63 __u8 lvb_success;
64 __u8 lvb_reserved[2];
65 __be32 lvb_nodenum;
66 __be64 lvb_start;
67 __be64 lvb_len;
68 __be64 lvb_minlen;
69 __be64 lvb_trimlen;
70};
71
72struct ocfs2_trim_fs_info {
73 u8 tf_valid; /* lvb is valid, or not */
74 u8 tf_success; /* trim is successful, or not */
75 u32 tf_nodenum; /* osb node number */
76 u64 tf_start; /* trim start offset in clusters */
77 u64 tf_len; /* trim end offset in clusters */
78 u64 tf_minlen; /* trim minimum contiguous free clusters */
79 u64 tf_trimlen; /* trimmed length in bytes */
80};
81
439a36b8
ER		 82struct ocfs2_lock_holder {
83 struct list_head oh_list;
84 struct pid *oh_owner_pid;
133b81f2 85 int oh_ex;
439a36b8
ER		 86};
87
e63aecb6 88/* ocfs2_inode_lock_full() 'arg_flags' flags */
ccd979bd
MF		 89/* don't wait on recovery. */
90#define OCFS2_META_LOCK_RECOVERY (0x01)
91/* Instruct the dlm not to queue ourselves on the other node. */
92#define OCFS2_META_LOCK_NOQUEUE (0x02)
34d024f8 93/* don't block waiting for the downconvert thread, instead return -EAGAIN */
ccd979bd 94#define OCFS2_LOCK_NONBLOCK (0x04)
439a36b8
ER		 95/* just get back disk inode bh if we've got cluster lock. */
96#define OCFS2_META_LOCK_GETBH (0x08)
ccd979bd 97
cb25797d
JK		 98/* Locking subclasses of inode cluster lock */
99enum {
100 OI_LS_NORMAL = 0,
101 OI_LS_PARENT,
102 OI_LS_RENAME1,
103 OI_LS_RENAME2,
07eaac94 104 OI_LS_REFLINK_TARGET,
cb25797d
JK		 105};
106
ccd979bd 107int ocfs2_dlm_init(struct ocfs2_super *osb);
286eaa95 108void ocfs2_dlm_shutdown(struct ocfs2_super *osb, int hangup_pending);
ccd979bd
MF		 109void ocfs2_lock_res_init_once(struct ocfs2_lock_res *res);
110void ocfs2_inode_lock_res_init(struct ocfs2_lock_res *res,
111 enum ocfs2_lock_type type,
24c19ef4 112 unsigned int generation,
ccd979bd 113 struct inode *inode);
d680efe9
MF		 114void ocfs2_dentry_lock_res_init(struct ocfs2_dentry_lock *dl,
115 u64 parent, struct inode *inode);
cf8e06f1
MF		 116struct ocfs2_file_private;
117void ocfs2_file_lock_res_init(struct ocfs2_lock_res *lockres,
118 struct ocfs2_file_private *fp);
9e33d69f
JK		 119struct ocfs2_mem_dqinfo;
120void ocfs2_qinfo_lock_res_init(struct ocfs2_lock_res *lockres,
121 struct ocfs2_mem_dqinfo *info);
8dec98ed
TM		 122void ocfs2_refcount_lock_res_init(struct ocfs2_lock_res *lockres,
123 struct ocfs2_super *osb, u64 ref_blkno,
124 unsigned int generation);
ccd979bd
MF		 125void ocfs2_lock_res_free(struct ocfs2_lock_res *res);
126int ocfs2_create_new_inode_locks(struct inode *inode);
127int ocfs2_drop_inode_locks(struct inode *inode);
ccd979bd 128int ocfs2_rw_lock(struct inode *inode, int write);
06e7f13d 129int ocfs2_try_rw_lock(struct inode *inode, int write);
ccd979bd 130void ocfs2_rw_unlock(struct inode *inode, int write);
50008630
TY		 131int ocfs2_open_lock(struct inode *inode);
132int ocfs2_try_open_lock(struct inode *inode, int write);
133void ocfs2_open_unlock(struct inode *inode);
e63aecb6 134int ocfs2_inode_lock_atime(struct inode *inode,
7f1a37e3 135 struct vfsmount *vfsmnt,
c4c2416a 136 int *level, int wait);
cb25797d 137int ocfs2_inode_lock_full_nested(struct inode *inode,
ccd979bd
MF		 138 struct buffer_head **ret_bh,
139 int ex,
cb25797d
JK		 140 int arg_flags,
141 int subclass);
e63aecb6 142int ocfs2_inode_lock_with_page(struct inode *inode,
ccd979bd
MF		 143 struct buffer_head **ret_bh,
144 int ex,
145 struct page *page);
cb25797d
JK		 146/* Variants without special locking class or flags */
147#define ocfs2_inode_lock_full(i, r, e, f)\
148 ocfs2_inode_lock_full_nested(i, r, e, f, OI_LS_NORMAL)
149#define ocfs2_inode_lock_nested(i, b, e, s)\
150 ocfs2_inode_lock_full_nested(i, b, e, 0, s)
ccd979bd
MF		 151/* 99% of the time we don't want to supply any additional flags --
152 * those are for very specific cases only. */
cb25797d 153#define ocfs2_inode_lock(i, b, e) ocfs2_inode_lock_full_nested(i, b, e, 0, OI_LS_NORMAL)
06e7f13d
GH		 154#define ocfs2_try_inode_lock(i, b, e)\
155 ocfs2_inode_lock_full_nested(i, b, e, OCFS2_META_LOCK_NOQUEUE,\
156 OI_LS_NORMAL)
e63aecb6 157void ocfs2_inode_unlock(struct inode *inode,
ccd979bd
MF		 158 int ex);
159int ocfs2_super_lock(struct ocfs2_super *osb,
160 int ex);
161void ocfs2_super_unlock(struct ocfs2_super *osb,
162 int ex);
df152c24
SM		 163int ocfs2_orphan_scan_lock(struct ocfs2_super *osb, u32 *seqno);
164void ocfs2_orphan_scan_unlock(struct ocfs2_super *osb, u32 seqno);
83273932 165
ccd979bd
MF		 166int ocfs2_rename_lock(struct ocfs2_super *osb);
167void ocfs2_rename_unlock(struct ocfs2_super *osb);
6ca497a8 168int ocfs2_nfs_sync_lock(struct ocfs2_super *osb, int ex);
169void ocfs2_nfs_sync_unlock(struct ocfs2_super *osb, int ex);
4882abeb
GH		 170void ocfs2_trim_fs_lock_res_init(struct ocfs2_super *osb);
171void ocfs2_trim_fs_lock_res_uninit(struct ocfs2_super *osb);
172int ocfs2_trim_fs_lock(struct ocfs2_super *osb,
173 struct ocfs2_trim_fs_info *info, int trylock);
174void ocfs2_trim_fs_unlock(struct ocfs2_super *osb,
175 struct ocfs2_trim_fs_info *info);
d680efe9
MF		 176int ocfs2_dentry_lock(struct dentry *dentry, int ex);
177void ocfs2_dentry_unlock(struct dentry *dentry, int ex);
cf8e06f1
MF		 178int ocfs2_file_lock(struct file *file, int ex, int trylock);
179void ocfs2_file_unlock(struct file *file);
9e33d69f
JK		 180int ocfs2_qinfo_lock(struct ocfs2_mem_dqinfo *oinfo, int ex);
181void ocfs2_qinfo_unlock(struct ocfs2_mem_dqinfo *oinfo, int ex);
8dec98ed
TM		 182struct ocfs2_refcount_tree;
183int ocfs2_refcount_lock(struct ocfs2_refcount_tree *ref_tree, int ex);
184void ocfs2_refcount_unlock(struct ocfs2_refcount_tree *ref_tree, int ex);
9e33d69f 185
d680efe9 186
84d86f83
JK		 187void ocfs2_mark_lockres_freeing(struct ocfs2_super *osb,
188 struct ocfs2_lock_res *lockres);
d680efe9
MF		 189void ocfs2_simple_drop_lockres(struct ocfs2_super *osb,
190 struct ocfs2_lock_res *lockres);
ccd979bd 191
34d024f8 192/* for the downconvert thread */
34d024f8 193void ocfs2_wake_downconvert_thread(struct ocfs2_super *osb);
ccd979bd
MF		 194
195struct ocfs2_dlm_debug *ocfs2_new_dlm_debug(void);
196void ocfs2_put_dlm_debug(struct ocfs2_dlm_debug *dlm_debug);
197
63e0c48a
JB		 198/* To set the locking protocol on module initialization */
199void ocfs2_set_locking_protocol(void);
439a36b8
ER		 200
201/* The _tracker pair is used to avoid cluster recursive locking */
202int ocfs2_inode_lock_tracker(struct inode *inode,
203 struct buffer_head **ret_bh,
204 int ex,
205 struct ocfs2_lock_holder *oh);
206void ocfs2_inode_unlock_tracker(struct inode *inode,
207 int ex,
208 struct ocfs2_lock_holder *oh,
209 int had_lock);
210
ccd979bd 211#endif /* DLMGLUE_H */
Linux 6.x block layer and io_uring tree(s)