]>
Commit | Line | Data |
---|---|---|
2bd0ea18 | 1 | /* |
da23017d NS |
2 | * Copyright (c) 2000-2001,2005 Silicon Graphics, Inc. |
3 | * All Rights Reserved. | |
5000d01d | 4 | * |
da23017d NS |
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 | |
2bd0ea18 | 7 | * published by the Free Software Foundation. |
5000d01d | 8 | * |
da23017d NS |
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. | |
5000d01d | 13 | * |
da23017d NS |
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 | |
2bd0ea18 NS |
17 | */ |
18 | ||
9c799827 | 19 | #include "libxfs_priv.h" |
b626fb59 DC |
20 | #include "xfs_fs.h" |
21 | #include "xfs_shared.h" | |
22 | #include "xfs_format.h" | |
23 | #include "xfs_log_format.h" | |
24 | #include "xfs_trans_resv.h" | |
25 | #include "xfs_mount.h" | |
26 | #include "xfs_inode_buf.h" | |
27 | #include "xfs_inode_fork.h" | |
28 | #include "xfs_inode.h" | |
29 | #include "xfs_trans.h" | |
2bd0ea18 | 30 | |
5e656dbb BN |
31 | kmem_zone_t *xfs_buf_item_zone; |
32 | kmem_zone_t *xfs_ili_zone; /* inode log item zone */ | |
2bd0ea18 | 33 | |
5e656dbb BN |
34 | /* |
35 | * Following functions from fs/xfs/xfs_trans_buf.c | |
36 | */ | |
37 | ||
2bd0ea18 NS |
38 | /* |
39 | * Check to see if a buffer matching the given parameters is already | |
c40bdaa2 | 40 | * a part of the given transaction. |
2bd0ea18 | 41 | */ |
5e656dbb | 42 | xfs_buf_t * |
2bd0ea18 | 43 | xfs_trans_buf_item_match( |
5bfc0742 | 44 | xfs_trans_t *tp, |
75c8b434 | 45 | struct xfs_buftarg *btp, |
a2ceac1f DC |
46 | struct xfs_buf_map *map, |
47 | int nmaps) | |
2bd0ea18 | 48 | { |
c40bdaa2 DC |
49 | struct xfs_log_item_desc *lidp; |
50 | struct xfs_buf_log_item *blip; | |
a2ceac1f DC |
51 | int len = 0; |
52 | int i; | |
53 | ||
54 | for (i = 0; i < nmaps; i++) | |
55 | len += map[i].bm_len; | |
c40bdaa2 | 56 | |
c40bdaa2 DC |
57 | list_for_each_entry(lidp, &tp->t_items, lid_trans) { |
58 | blip = (struct xfs_buf_log_item *)lidp->lid_item; | |
59 | if (blip->bli_item.li_type == XFS_LI_BUF && | |
75c8b434 | 60 | blip->bli_buf->b_target->dev == btp->dev && |
a2ceac1f DC |
61 | XFS_BUF_ADDR(blip->bli_buf) == map[0].bm_bn && |
62 | blip->bli_buf->b_bcount == BBTOB(len)) { | |
63 | ASSERT(blip->bli_buf->b_map_count == nmaps); | |
c40bdaa2 | 64 | return blip->bli_buf; |
a2ceac1f | 65 | } |
c40bdaa2 DC |
66 | } |
67 | ||
68 | return NULL; | |
2bd0ea18 | 69 | } |
5e656dbb BN |
70 | /* |
71 | * The following are from fs/xfs/xfs_buf_item.c | |
72 | */ | |
73 | ||
2bd0ea18 NS |
74 | /* |
75 | * Allocate a new buf log item to go with the given buffer. | |
76 | * Set the buffer's b_fsprivate field to point to the new | |
77 | * buf log item. If there are other item's attached to the | |
78 | * buffer (see xfs_buf_attach_iodone() below), then put the | |
79 | * buf log item at the front. | |
80 | */ | |
81 | void | |
82 | xfs_buf_item_init( | |
5bfc0742 NS |
83 | xfs_buf_t *bp, |
84 | xfs_mount_t *mp) | |
2bd0ea18 NS |
85 | { |
86 | xfs_log_item_t *lip; | |
87 | xfs_buf_log_item_t *bip; | |
88 | ||
89 | #ifdef LI_DEBUG | |
90 | fprintf(stderr, "buf_item_init for buffer %p\n", bp); | |
91 | #endif | |
92 | ||
93 | /* | |
94 | * Check to see if there is already a buf log item for | |
5000d01d | 95 | * this buffer. If there is, it is guaranteed to be |
2bd0ea18 NS |
96 | * the first. If we do already have one, there is |
97 | * nothing to do here so return. | |
98 | */ | |
2bd0ea18 | 99 | XFS_BUF_SET_BDSTRAT_FUNC(bp, xfs_bdstrat_cb); |
38d096b6 CH |
100 | if (bp->b_fspriv != NULL) { |
101 | lip = bp->b_fspriv; | |
2bd0ea18 NS |
102 | if (lip->li_type == XFS_LI_BUF) { |
103 | #ifdef LI_DEBUG | |
104 | fprintf(stderr, | |
105 | "reused buf item %p for pre-logged buffer %p\n", | |
106 | lip, bp); | |
107 | #endif | |
108 | return; | |
109 | } | |
110 | } | |
111 | ||
112 | bip = (xfs_buf_log_item_t *)kmem_zone_zalloc(xfs_buf_item_zone, | |
113 | KM_SLEEP); | |
114 | #ifdef LI_DEBUG | |
115 | fprintf(stderr, "adding buf item %p for not-logged buffer %p\n", | |
116 | bip, bp); | |
117 | #endif | |
118 | bip->bli_item.li_type = XFS_LI_BUF; | |
119 | bip->bli_item.li_mountp = mp; | |
120 | bip->bli_buf = bp; | |
121 | bip->bli_format.blf_type = XFS_LI_BUF; | |
14f8b681 | 122 | bip->bli_format.blf_blkno = (int64_t)XFS_BUF_ADDR(bp); |
919dbc78 | 123 | bip->bli_format.blf_len = (unsigned short)BTOBB(XFS_BUF_COUNT(bp)); |
38d096b6 | 124 | bp->b_fspriv = bip; |
2bd0ea18 NS |
125 | } |
126 | ||
127 | ||
128 | /* | |
129 | * Mark bytes first through last inclusive as dirty in the buf | |
130 | * item's bitmap. | |
131 | */ | |
132 | void | |
133 | xfs_buf_item_log( | |
134 | xfs_buf_log_item_t *bip, | |
135 | uint first, | |
136 | uint last) | |
137 | { | |
138 | /* | |
139 | * Mark the item as having some dirty data for | |
140 | * quick reference in xfs_buf_item_dirty. | |
141 | */ | |
142 | bip->bli_flags |= XFS_BLI_DIRTY; | |
143 | } | |
144 | ||
145 | /* | |
146 | * Initialize the inode log item for a newly allocated (in-core) inode. | |
147 | */ | |
148 | void | |
149 | xfs_inode_item_init( | |
5bfc0742 NS |
150 | xfs_inode_t *ip, |
151 | xfs_mount_t *mp) | |
2bd0ea18 NS |
152 | { |
153 | xfs_inode_log_item_t *iip; | |
154 | ||
155 | ASSERT(ip->i_itemp == NULL); | |
156 | iip = ip->i_itemp = (xfs_inode_log_item_t *) | |
157 | kmem_zone_zalloc(xfs_ili_zone, KM_SLEEP); | |
158 | #ifdef LI_DEBUG | |
159 | fprintf(stderr, "inode_item_init for inode %llu, iip=%p\n", | |
160 | ip->i_ino, iip); | |
161 | #endif | |
162 | ||
163 | iip->ili_item.li_type = XFS_LI_INODE; | |
164 | iip->ili_item.li_mountp = mp; | |
165 | iip->ili_inode = ip; | |
2bd0ea18 | 166 | } |