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2024-12-19 9370bb92b2d16684ee45cf24e879c93c509162da 
 kernel/fs/xfs/xfs_icreate_item.c
....@@ -9,13 +9,16 @@
99 #include "xfs_format.h"
1010 #include "xfs_log_format.h"
1111 #include "xfs_trans_resv.h"
12
-#include "xfs_bit.h"
1312 #include "xfs_mount.h"
13
+#include "xfs_inode.h"
1414 #include "xfs_trans.h"
1515 #include "xfs_trans_priv.h"
16
-#include "xfs_error.h"
1716 #include "xfs_icreate_item.h"
1817 #include "xfs_log.h"
18
+#include "xfs_log_priv.h"
19
+#include "xfs_log_recover.h"
20
+#include "xfs_ialloc.h"
21
+#include "xfs_trace.h"
1922 
2023 kmem_zone_t	*xfs_icreate_zone;		/* inode create item zone */
2124 
....@@ -56,80 +59,18 @@
5659 			sizeof(struct xfs_icreate_log));
5760 }
5861 
59
-
60
-/* Pinning has no meaning for the create item, so just return. */
6162 STATIC void
62
-xfs_icreate_item_pin(
63
+xfs_icreate_item_release(
6364 	struct xfs_log_item	*lip)
6465 {
66
+	kmem_cache_free(xfs_icreate_zone, ICR_ITEM(lip));
6567 }
6668 
67
-
68
-/* pinning has no meaning for the create item, so just return. */
69
-STATIC void
70
-xfs_icreate_item_unpin(
71
-	struct xfs_log_item	*lip,
72
-	int			remove)
73
-{
74
-}
75
-
76
-STATIC void
77
-xfs_icreate_item_unlock(
78
-	struct xfs_log_item	*lip)
79
-{
80
-	struct xfs_icreate_item	*icp = ICR_ITEM(lip);
81
-
82
-	if (test_bit(XFS_LI_ABORTED, &lip->li_flags))
83
-		kmem_zone_free(xfs_icreate_zone, icp);
84
-	return;
85
-}
86
-
87
-/*
88
- * Because we have ordered buffers being tracked in the AIL for the inode
89
- * creation, we don't need the create item after this. Hence we can free
90
- * the log item and return -1 to tell the caller we're done with the item.
91
- */
92
-STATIC xfs_lsn_t
93
-xfs_icreate_item_committed(
94
-	struct xfs_log_item	*lip,
95
-	xfs_lsn_t		lsn)
96
-{
97
-	struct xfs_icreate_item	*icp = ICR_ITEM(lip);
98
-
99
-	kmem_zone_free(xfs_icreate_zone, icp);
100
-	return (xfs_lsn_t)-1;
101
-}
102
-
103
-/* item can never get into the AIL */
104
-STATIC uint
105
-xfs_icreate_item_push(
106
-	struct xfs_log_item	*lip,
107
-	struct list_head	*buffer_list)
108
-{
109
-	ASSERT(0);
110
-	return XFS_ITEM_SUCCESS;
111
-}
112
-
113
-/* Ordered buffers do the dependency tracking here, so this does nothing. */
114
-STATIC void
115
-xfs_icreate_item_committing(
116
-	struct xfs_log_item	*lip,
117
-	xfs_lsn_t		lsn)
118
-{
119
-}
120
-
121
-/*
122
- * This is the ops vector shared by all buf log items.
123
- */
12469 static const struct xfs_item_ops xfs_icreate_item_ops = {
70
+	.flags		= XFS_ITEM_RELEASE_WHEN_COMMITTED,
12571 	.iop_size	= xfs_icreate_item_size,
12672 	.iop_format	= xfs_icreate_item_format,
127
-	.iop_pin	= xfs_icreate_item_pin,
128
-	.iop_unpin	= xfs_icreate_item_unpin,
129
-	.iop_push	= xfs_icreate_item_push,
130
-	.iop_unlock	= xfs_icreate_item_unlock,
131
-	.iop_committed	= xfs_icreate_item_committed,
132
-	.iop_committing = xfs_icreate_item_committing,
73
+	.iop_release	= xfs_icreate_item_release,
13374 };
13475 
13576 
....@@ -156,7 +97,7 @@
15697 {
15798 	struct xfs_icreate_item	*icp;
15899 
159
-	icp = kmem_zone_zalloc(xfs_icreate_zone, KM_SLEEP);
100
+	icp = kmem_cache_zalloc(xfs_icreate_zone, GFP_KERNEL | __GFP_NOFAIL);
160101 
161102 	xfs_log_item_init(tp->t_mountp, &icp->ic_item, XFS_LI_ICREATE,
162103 			  &xfs_icreate_item_ops);
....@@ -174,3 +115,147 @@
174115 	tp->t_flags |= XFS_TRANS_DIRTY;
175116 	set_bit(XFS_LI_DIRTY, &icp->ic_item.li_flags);
176117 }
118
+
119
+static enum xlog_recover_reorder
120
+xlog_recover_icreate_reorder(
121
+		struct xlog_recover_item *item)
122
+{
123
+	/*
124
+	 * Inode allocation buffers must be replayed before subsequent inode
125
+	 * items try to modify those buffers.  ICREATE items are the logical
126
+	 * equivalent of logging a newly initialized inode buffer, so recover
127
+	 * these at the same time that we recover logged buffers.
128
+	 */
129
+	return XLOG_REORDER_BUFFER_LIST;
130
+}
131
+
132
+/*
133
+ * This routine is called when an inode create format structure is found in a
134
+ * committed transaction in the log.  It's purpose is to initialise the inodes
135
+ * being allocated on disk. This requires us to get inode cluster buffers that
136
+ * match the range to be initialised, stamped with inode templates and written
137
+ * by delayed write so that subsequent modifications will hit the cached buffer
138
+ * and only need writing out at the end of recovery.
139
+ */
140
+STATIC int
141
+xlog_recover_icreate_commit_pass2(
142
+	struct xlog			*log,
143
+	struct list_head		*buffer_list,
144
+	struct xlog_recover_item	*item,
145
+	xfs_lsn_t			lsn)
146
+{
147
+	struct xfs_mount		*mp = log->l_mp;
148
+	struct xfs_icreate_log		*icl;
149
+	struct xfs_ino_geometry		*igeo = M_IGEO(mp);
150
+	xfs_agnumber_t			agno;
151
+	xfs_agblock_t			agbno;
152
+	unsigned int			count;
153
+	unsigned int			isize;
154
+	xfs_agblock_t			length;
155
+	int				bb_per_cluster;
156
+	int				cancel_count;
157
+	int				nbufs;
158
+	int				i;
159
+
160
+	icl = (struct xfs_icreate_log *)item->ri_buf[0].i_addr;
161
+	if (icl->icl_type != XFS_LI_ICREATE) {
162
+		xfs_warn(log->l_mp, "xlog_recover_do_icreate_trans: bad type");
163
+		return -EINVAL;
164
+	}
165
+
166
+	if (icl->icl_size != 1) {
167
+		xfs_warn(log->l_mp, "xlog_recover_do_icreate_trans: bad icl size");
168
+		return -EINVAL;
169
+	}
170
+
171
+	agno = be32_to_cpu(icl->icl_ag);
172
+	if (agno >= mp->m_sb.sb_agcount) {
173
+		xfs_warn(log->l_mp, "xlog_recover_do_icreate_trans: bad agno");
174
+		return -EINVAL;
175
+	}
176
+	agbno = be32_to_cpu(icl->icl_agbno);
177
+	if (!agbno || agbno == NULLAGBLOCK || agbno >= mp->m_sb.sb_agblocks) {
178
+		xfs_warn(log->l_mp, "xlog_recover_do_icreate_trans: bad agbno");
179
+		return -EINVAL;
180
+	}
181
+	isize = be32_to_cpu(icl->icl_isize);
182
+	if (isize != mp->m_sb.sb_inodesize) {
183
+		xfs_warn(log->l_mp, "xlog_recover_do_icreate_trans: bad isize");
184
+		return -EINVAL;
185
+	}
186
+	count = be32_to_cpu(icl->icl_count);
187
+	if (!count) {
188
+		xfs_warn(log->l_mp, "xlog_recover_do_icreate_trans: bad count");
189
+		return -EINVAL;
190
+	}
191
+	length = be32_to_cpu(icl->icl_length);
192
+	if (!length || length >= mp->m_sb.sb_agblocks) {
193
+		xfs_warn(log->l_mp, "xlog_recover_do_icreate_trans: bad length");
194
+		return -EINVAL;
195
+	}
196
+
197
+	/*
198
+	 * The inode chunk is either full or sparse and we only support
199
+	 * m_ino_geo.ialloc_min_blks sized sparse allocations at this time.
200
+	 */
201
+	if (length != igeo->ialloc_blks &&
202
+	    length != igeo->ialloc_min_blks) {
203
+		xfs_warn(log->l_mp,
204
+			 "%s: unsupported chunk length", __FUNCTION__);
205
+		return -EINVAL;
206
+	}
207
+
208
+	/* verify inode count is consistent with extent length */
209
+	if ((count >> mp->m_sb.sb_inopblog) != length) {
210
+		xfs_warn(log->l_mp,
211
+			 "%s: inconsistent inode count and chunk length",
212
+			 __FUNCTION__);
213
+		return -EINVAL;
214
+	}
215
+
216
+	/*
217
+	 * The icreate transaction can cover multiple cluster buffers and these
218
+	 * buffers could have been freed and reused. Check the individual
219
+	 * buffers for cancellation so we don't overwrite anything written after
220
+	 * a cancellation.
221
+	 */
222
+	bb_per_cluster = XFS_FSB_TO_BB(mp, igeo->blocks_per_cluster);
223
+	nbufs = length / igeo->blocks_per_cluster;
224
+	for (i = 0, cancel_count = 0; i < nbufs; i++) {
225
+		xfs_daddr_t	daddr;
226
+
227
+		daddr = XFS_AGB_TO_DADDR(mp, agno,
228
+				agbno + i * igeo->blocks_per_cluster);
229
+		if (xlog_is_buffer_cancelled(log, daddr, bb_per_cluster))
230
+			cancel_count++;
231
+	}
232
+
233
+	/*
234
+	 * We currently only use icreate for a single allocation at a time. This
235
+	 * means we should expect either all or none of the buffers to be
236
+	 * cancelled. Be conservative and skip replay if at least one buffer is
237
+	 * cancelled, but warn the user that something is awry if the buffers
238
+	 * are not consistent.
239
+	 *
240
+	 * XXX: This must be refined to only skip cancelled clusters once we use
241
+	 * icreate for multiple chunk allocations.
242
+	 */
243
+	ASSERT(!cancel_count || cancel_count == nbufs);
244
+	if (cancel_count) {
245
+		if (cancel_count != nbufs)
246
+			xfs_warn(mp,
247
+	"WARNING: partial inode chunk cancellation, skipped icreate.");
248
+		trace_xfs_log_recover_icreate_cancel(log, icl);
249
+		return 0;
250
+	}
251
+
252
+	trace_xfs_log_recover_icreate_recover(log, icl);
253
+	return xfs_ialloc_inode_init(mp, NULL, buffer_list, count, agno, agbno,
254
+				     length, be32_to_cpu(icl->icl_gen));
255
+}
256
+
257
+const struct xlog_recover_item_ops xlog_icreate_item_ops = {
258
+	.item_type		= XFS_LI_ICREATE,
259
+	.reorder		= xlog_recover_icreate_reorder,
260
+	.commit_pass2		= xlog_recover_icreate_commit_pass2,
261
+};