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space_map.c (236250) space_map.c (240415)
1/*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE

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17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21/*
22 * Copyright 2009 Sun Microsystems, Inc. All rights reserved.
23 * Use is subject to license terms.
24 */
1/*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE

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17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21/*
22 * Copyright 2009 Sun Microsystems, Inc. All rights reserved.
23 * Use is subject to license terms.
24 */
25/*
26 * Copyright (c) 2012 by Delphix. All rights reserved.
27 */
25
26#include <sys/zfs_context.h>
27#include <sys/spa.h>
28#include <sys/dmu.h>
29#include <sys/zio.h>
30#include <sys/space_map.h>
31
32SYSCTL_DECL(_vfs_zfs);

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75 sm->sm_shift = shift;
76 sm->sm_lock = lp;
77}
78
79void
80space_map_destroy(space_map_t *sm)
81{
82 ASSERT(!sm->sm_loaded && !sm->sm_loading);
28
29#include <sys/zfs_context.h>
30#include <sys/spa.h>
31#include <sys/dmu.h>
32#include <sys/zio.h>
33#include <sys/space_map.h>
34
35SYSCTL_DECL(_vfs_zfs);

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78 sm->sm_shift = shift;
79 sm->sm_lock = lp;
80}
81
82void
83space_map_destroy(space_map_t *sm)
84{
85 ASSERT(!sm->sm_loaded && !sm->sm_loading);
83 VERIFY3U(sm->sm_space, ==, 0);
86 VERIFY0(sm->sm_space);
84 avl_destroy(&sm->sm_root);
85 cv_destroy(&sm->sm_load_cv);
86}
87
88void
89space_map_add(space_map_t *sm, uint64_t start, uint64_t size)
90{
91 avl_index_t where;

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304 ASSERT(!sm->sm_loaded);
305 ASSERT(!sm->sm_loading);
306
307 sm->sm_loading = B_TRUE;
308 end = smo->smo_objsize;
309 space = smo->smo_alloc;
310
311 ASSERT(sm->sm_ops == NULL);
87 avl_destroy(&sm->sm_root);
88 cv_destroy(&sm->sm_load_cv);
89}
90
91void
92space_map_add(space_map_t *sm, uint64_t start, uint64_t size)
93{
94 avl_index_t where;

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307 ASSERT(!sm->sm_loaded);
308 ASSERT(!sm->sm_loading);
309
310 sm->sm_loading = B_TRUE;
311 end = smo->smo_objsize;
312 space = smo->smo_alloc;
313
314 ASSERT(sm->sm_ops == NULL);
312 VERIFY3U(sm->sm_space, ==, 0);
315 VERIFY0(sm->sm_space);
313
314 if (maptype == SM_FREE) {
315 space_map_add(sm, sm->sm_start, sm->sm_size);
316 space = sm->sm_size - space;
317 }
318
319 bufsize = 1ULL << SPACE_MAP_BLOCKSHIFT;
320 entry_map = zio_buf_alloc(bufsize);

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493 dmu_write(os, smo->smo_object, smo->smo_objsize,
494 size, entry_map, tx);
495 mutex_enter(sm->sm_lock);
496 smo->smo_objsize += size;
497 }
498
499 zio_buf_free(entry_map, bufsize);
500
316
317 if (maptype == SM_FREE) {
318 space_map_add(sm, sm->sm_start, sm->sm_size);
319 space = sm->sm_size - space;
320 }
321
322 bufsize = 1ULL << SPACE_MAP_BLOCKSHIFT;
323 entry_map = zio_buf_alloc(bufsize);

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496 dmu_write(os, smo->smo_object, smo->smo_objsize,
497 size, entry_map, tx);
498 mutex_enter(sm->sm_lock);
499 smo->smo_objsize += size;
500 }
501
502 zio_buf_free(entry_map, bufsize);
503
501 VERIFY3U(sm->sm_space, ==, 0);
504 VERIFY0(sm->sm_space);
502}
503
504void
505space_map_truncate(space_map_obj_t *smo, objset_t *os, dmu_tx_t *tx)
506{
507 VERIFY(dmu_free_range(os, smo->smo_object, 0, -1ULL, tx) == 0);
508
509 smo->smo_objsize = 0;

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506
507void
508space_map_truncate(space_map_obj_t *smo, objset_t *os, dmu_tx_t *tx)
509{
510 VERIFY(dmu_free_range(os, smo->smo_object, 0, -1ULL, tx) == 0);
511
512 smo->smo_objsize = 0;

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