tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1/*
2 * Copyright (c) 2008-2010, 2013 Dave Chinner
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#include "xfs.h"
19#include "xfs_fs.h"
20#include "xfs_types.h"
21#include "xfs_bit.h"
22#include "xfs_log.h"
23#include "xfs_inum.h"
24#include "xfs_trans.h"
25#include "xfs_buf_item.h"
26#include "xfs_sb.h"
27#include "xfs_ag.h"
28#include "xfs_dir2.h"
29#include "xfs_mount.h"
30#include "xfs_trans_priv.h"
31#include "xfs_bmap_btree.h"
32#include "xfs_alloc_btree.h"
33#include "xfs_ialloc_btree.h"
34#include "xfs_attr_sf.h"
35#include "xfs_dinode.h"
36#include "xfs_inode.h"
37#include "xfs_inode_item.h"
38#include "xfs_btree.h"
39#include "xfs_ialloc.h"
40#include "xfs_error.h"
41#include "xfs_icreate_item.h"
42
43kmem_zone_t *xfs_icreate_zone; /* inode create item zone */
44
45static inline struct xfs_icreate_item *ICR_ITEM(struct xfs_log_item *lip)
46{
47 return container_of(lip, struct xfs_icreate_item, ic_item);
48}
49
50/*
51 * This returns the number of iovecs needed to log the given inode item.
52 *
53 * We only need one iovec for the icreate log structure.
54 */
55STATIC uint
56xfs_icreate_item_size(
57 struct xfs_log_item *lip)
58{
59 return 1;
60}
61
62/*
63 * This is called to fill in the vector of log iovecs for the
64 * given inode create log item.
65 */
66STATIC void
67xfs_icreate_item_format(
68 struct xfs_log_item *lip,
69 struct xfs_log_iovec *log_vector)
70{
71 struct xfs_icreate_item *icp = ICR_ITEM(lip);
72
73 log_vector->i_addr = (xfs_caddr_t)&icp->ic_format;
74 log_vector->i_len = sizeof(struct xfs_icreate_log);
75 log_vector->i_type = XLOG_REG_TYPE_ICREATE;
76}
77
78
79/* Pinning has no meaning for the create item, so just return. */
80STATIC void
81xfs_icreate_item_pin(
82 struct xfs_log_item *lip)
83{
84}
85
86
87/* pinning has no meaning for the create item, so just return. */
88STATIC void
89xfs_icreate_item_unpin(
90 struct xfs_log_item *lip,
91 int remove)
92{
93}
94
95STATIC void
96xfs_icreate_item_unlock(
97 struct xfs_log_item *lip)
98{
99 struct xfs_icreate_item *icp = ICR_ITEM(lip);
100
101 if (icp->ic_item.li_flags & XFS_LI_ABORTED)
102 kmem_zone_free(xfs_icreate_zone, icp);
103 return;
104}
105
106/*
107 * Because we have ordered buffers being tracked in the AIL for the inode
108 * creation, we don't need the create item after this. Hence we can free
109 * the log item and return -1 to tell the caller we're done with the item.
110 */
111STATIC xfs_lsn_t
112xfs_icreate_item_committed(
113 struct xfs_log_item *lip,
114 xfs_lsn_t lsn)
115{
116 struct xfs_icreate_item *icp = ICR_ITEM(lip);
117
118 kmem_zone_free(xfs_icreate_zone, icp);
119 return (xfs_lsn_t)-1;
120}
121
122/* item can never get into the AIL */
123STATIC uint
124xfs_icreate_item_push(
125 struct xfs_log_item *lip,
126 struct list_head *buffer_list)
127{
128 ASSERT(0);
129 return XFS_ITEM_SUCCESS;
130}
131
132/* Ordered buffers do the dependency tracking here, so this does nothing. */
133STATIC void
134xfs_icreate_item_committing(
135 struct xfs_log_item *lip,
136 xfs_lsn_t lsn)
137{
138}
139
140/*
141 * This is the ops vector shared by all buf log items.
142 */
143static struct xfs_item_ops xfs_icreate_item_ops = {
144 .iop_size = xfs_icreate_item_size,
145 .iop_format = xfs_icreate_item_format,
146 .iop_pin = xfs_icreate_item_pin,
147 .iop_unpin = xfs_icreate_item_unpin,
148 .iop_push = xfs_icreate_item_push,
149 .iop_unlock = xfs_icreate_item_unlock,
150 .iop_committed = xfs_icreate_item_committed,
151 .iop_committing = xfs_icreate_item_committing,
152};
153
154
155/*
156 * Initialize the inode log item for a newly allocated (in-core) inode.
157 *
158 * Inode extents can only reside within an AG. Hence specify the starting
159 * block for the inode chunk by offset within an AG as well as the
160 * length of the allocated extent.
161 *
162 * This joins the item to the transaction and marks it dirty so
163 * that we don't need a separate call to do this, nor does the
164 * caller need to know anything about the icreate item.
165 */
166void
167xfs_icreate_log(
168 struct xfs_trans *tp,
169 xfs_agnumber_t agno,
170 xfs_agblock_t agbno,
171 unsigned int count,
172 unsigned int inode_size,
173 xfs_agblock_t length,
174 unsigned int generation)
175{
176 struct xfs_icreate_item *icp;
177
178 icp = kmem_zone_zalloc(xfs_icreate_zone, KM_SLEEP);
179
180 xfs_log_item_init(tp->t_mountp, &icp->ic_item, XFS_LI_ICREATE,
181 &xfs_icreate_item_ops);
182
183 icp->ic_format.icl_type = XFS_LI_ICREATE;
184 icp->ic_format.icl_size = 1; /* single vector */
185 icp->ic_format.icl_ag = cpu_to_be32(agno);
186 icp->ic_format.icl_agbno = cpu_to_be32(agbno);
187 icp->ic_format.icl_count = cpu_to_be32(count);
188 icp->ic_format.icl_isize = cpu_to_be32(inode_size);
189 icp->ic_format.icl_length = cpu_to_be32(length);
190 icp->ic_format.icl_gen = cpu_to_be32(generation);
191
192 xfs_trans_add_item(tp, &icp->ic_item);
193 tp->t_flags |= XFS_TRANS_DIRTY;
194 icp->ic_item.li_desc->lid_flags |= XFS_LID_DIRTY;
195}