1 files changed, 0 insertions, 501 deletions
diff --git a/sys/contrib/opensolaris/uts/common/fs/zfs/space_map.c b/sys/contrib/opensolaris/uts/common/fs/zfs/space_map.c
deleted file mode 100644
index 23313a9..0000000
--- a/sys/contrib/opensolaris/uts/common/fs/zfs/space_map.c
+++ /dev/null
@@ -1,501 +0,0 @@
-/*
- * CDDL HEADER START
- *
- * The contents of this file are subject to the terms of the
- * Common Development and Distribution License (the "License").
- * You may not use this file except in compliance with the License.
- *
- * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
- * or http://www.opensolaris.org/os/licensing.
- * See the License for the specific language governing permissions
- * and limitations under the License.
- *
- * When distributing Covered Code, include this CDDL HEADER in each
- * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
- * If applicable, add the following below this CDDL HEADER, with the
- * fields enclosed by brackets "[]" replaced with your own identifying
- * information: Portions Copyright [yyyy] [name of copyright owner]
- *
- * CDDL HEADER END
- */
-/*
- * Copyright 2007 Sun Microsystems, Inc.  All rights reserved.
- * Use is subject to license terms.
- */
-
-#pragma ident	"%Z%%M%	%I%	%E% SMI"
-
-#include <sys/zfs_context.h>
-#include <sys/spa.h>
-#include <sys/dmu.h>
-#include <sys/zio.h>
-#include <sys/space_map.h>
-
-/*
- * Space map routines.
- * NOTE: caller is responsible for all locking.
- */
-static int
-space_map_seg_compare(const void *x1, const void *x2)
-{
-	const space_seg_t *s1 = x1;
-	const space_seg_t *s2 = x2;
-
-	if (s1->ss_start < s2->ss_start) {
-		if (s1->ss_end > s2->ss_start)
-			return (0);
-		return (-1);
-	}
-	if (s1->ss_start > s2->ss_start) {
-		if (s1->ss_start < s2->ss_end)
-			return (0);
-		return (1);
-	}
-	return (0);
-}
-
-void
-space_map_create(space_map_t *sm, uint64_t start, uint64_t size, uint8_t shift,
-	kmutex_t *lp)
-{
-	bzero(sm, sizeof (*sm));
-
-	cv_init(&sm->sm_load_cv, NULL, CV_DEFAULT, NULL);
-	avl_create(&sm->sm_root, space_map_seg_compare,
-	    sizeof (space_seg_t), offsetof(struct space_seg, ss_node));
-
-	sm->sm_start = start;
-	sm->sm_size = size;
-	sm->sm_shift = shift;
-	sm->sm_lock = lp;
-}
-
-void
-space_map_destroy(space_map_t *sm)
-{
-	ASSERT(!sm->sm_loaded && !sm->sm_loading);
-	VERIFY3U(sm->sm_space, ==, 0);
-	avl_destroy(&sm->sm_root);
-	cv_destroy(&sm->sm_load_cv);
-}
-
-void
-space_map_add(space_map_t *sm, uint64_t start, uint64_t size)
-{
-	avl_index_t where;
-	space_seg_t ssearch, *ss_before, *ss_after, *ss;
-	uint64_t end = start + size;
-	int merge_before, merge_after;
-
-	ASSERT(MUTEX_HELD(sm->sm_lock));
-	VERIFY(size != 0);
-	VERIFY3U(start, >=, sm->sm_start);
-	VERIFY3U(end, <=, sm->sm_start + sm->sm_size);
-	VERIFY(sm->sm_space + size <= sm->sm_size);
-	VERIFY(P2PHASE(start, 1ULL << sm->sm_shift) == 0);
-	VERIFY(P2PHASE(size, 1ULL << sm->sm_shift) == 0);
-
-	ssearch.ss_start = start;
-	ssearch.ss_end = end;
-	ss = avl_find(&sm->sm_root, &ssearch, &where);
-
-	if (ss != NULL && ss->ss_start <= start && ss->ss_end >= end) {
-		zfs_panic_recover("zfs: allocating allocated segment"
-		    "(offset=%llu size=%llu)\n",
-		    (longlong_t)start, (longlong_t)size);
-		return;
-	}
-
-	/* Make sure we don't overlap with either of our neighbors */
-	VERIFY(ss == NULL);
-
-	ss_before = avl_nearest(&sm->sm_root, where, AVL_BEFORE);
-	ss_after = avl_nearest(&sm->sm_root, where, AVL_AFTER);
-
-	merge_before = (ss_before != NULL && ss_before->ss_end == start);
-	merge_after = (ss_after != NULL && ss_after->ss_start == end);
-
-	if (merge_before && merge_after) {
-		avl_remove(&sm->sm_root, ss_before);
-		ss_after->ss_start = ss_before->ss_start;
-		kmem_free(ss_before, sizeof (*ss_before));
-	} else if (merge_before) {
-		ss_before->ss_end = end;
-	} else if (merge_after) {
-		ss_after->ss_start = start;
-	} else {
-		ss = kmem_alloc(sizeof (*ss), KM_SLEEP);
-		ss->ss_start = start;
-		ss->ss_end = end;
-		avl_insert(&sm->sm_root, ss, where);
-	}
-
-	sm->sm_space += size;
-}
-
-void
-space_map_remove(space_map_t *sm, uint64_t start, uint64_t size)
-{
-	avl_index_t where;
-	space_seg_t ssearch, *ss, *newseg;
-	uint64_t end = start + size;
-	int left_over, right_over;
-
-	ASSERT(MUTEX_HELD(sm->sm_lock));
-	VERIFY(size != 0);
-	VERIFY(P2PHASE(start, 1ULL << sm->sm_shift) == 0);
-	VERIFY(P2PHASE(size, 1ULL << sm->sm_shift) == 0);
-
-	ssearch.ss_start = start;
-	ssearch.ss_end = end;
-	ss = avl_find(&sm->sm_root, &ssearch, &where);
-
-	/* Make sure we completely overlap with someone */
-	if (ss == NULL) {
-		zfs_panic_recover("zfs: freeing free segment "
-		    "(offset=%llu size=%llu)",
-		    (longlong_t)start, (longlong_t)size);
-		return;
-	}
-	VERIFY3U(ss->ss_start, <=, start);
-	VERIFY3U(ss->ss_end, >=, end);
-	VERIFY(sm->sm_space - size <= sm->sm_size);
-
-	left_over = (ss->ss_start != start);
-	right_over = (ss->ss_end != end);
-
-	if (left_over && right_over) {
-		newseg = kmem_alloc(sizeof (*newseg), KM_SLEEP);
-		newseg->ss_start = end;
-		newseg->ss_end = ss->ss_end;
-		ss->ss_end = start;
-		avl_insert_here(&sm->sm_root, newseg, ss, AVL_AFTER);
-	} else if (left_over) {
-		ss->ss_end = start;
-	} else if (right_over) {
-		ss->ss_start = end;
-	} else {
-		avl_remove(&sm->sm_root, ss);
-		kmem_free(ss, sizeof (*ss));
-	}
-
-	sm->sm_space -= size;
-}
-
-int
-space_map_contains(space_map_t *sm, uint64_t start, uint64_t size)
-{
-	avl_index_t where;
-	space_seg_t ssearch, *ss;
-	uint64_t end = start + size;
-
-	ASSERT(MUTEX_HELD(sm->sm_lock));
-	VERIFY(size != 0);
-	VERIFY(P2PHASE(start, 1ULL << sm->sm_shift) == 0);
-	VERIFY(P2PHASE(size, 1ULL << sm->sm_shift) == 0);
-
-	ssearch.ss_start = start;
-	ssearch.ss_end = end;
-	ss = avl_find(&sm->sm_root, &ssearch, &where);
-
-	return (ss != NULL && ss->ss_start <= start && ss->ss_end >= end);
-}
-
-void
-space_map_vacate(space_map_t *sm, space_map_func_t *func, space_map_t *mdest)
-{
-	space_seg_t *ss;
-	void *cookie = NULL;
-
-	ASSERT(MUTEX_HELD(sm->sm_lock));
-
-	while ((ss = avl_destroy_nodes(&sm->sm_root, &cookie)) != NULL) {
-		if (func != NULL)
-			func(mdest, ss->ss_start, ss->ss_end - ss->ss_start);
-		kmem_free(ss, sizeof (*ss));
-	}
-	sm->sm_space = 0;
-}
-
-void
-space_map_walk(space_map_t *sm, space_map_func_t *func, space_map_t *mdest)
-{
-	space_seg_t *ss;
-
-	for (ss = avl_first(&sm->sm_root); ss; ss = AVL_NEXT(&sm->sm_root, ss))
-		func(mdest, ss->ss_start, ss->ss_end - ss->ss_start);
-}
-
-void
-space_map_excise(space_map_t *sm, uint64_t start, uint64_t size)
-{
-	avl_tree_t *t = &sm->sm_root;
-	avl_index_t where;
-	space_seg_t *ss, search;
-	uint64_t end = start + size;
-	uint64_t rm_start, rm_end;
-
-	ASSERT(MUTEX_HELD(sm->sm_lock));
-
-	search.ss_start = start;
-	search.ss_end = start;
-
-	for (;;) {
-		ss = avl_find(t, &search, &where);
-
-		if (ss == NULL)
-			ss = avl_nearest(t, where, AVL_AFTER);
-
-		if (ss == NULL || ss->ss_start >= end)
-			break;
-
-		rm_start = MAX(ss->ss_start, start);
-		rm_end = MIN(ss->ss_end, end);
-
-		space_map_remove(sm, rm_start, rm_end - rm_start);
-	}
-}
-
-/*
- * Replace smd with the union of smd and sms.
- */
-void
-space_map_union(space_map_t *smd, space_map_t *sms)
-{
-	avl_tree_t *t = &sms->sm_root;
-	space_seg_t *ss;
-
-	ASSERT(MUTEX_HELD(smd->sm_lock));
-
-	/*
-	 * For each source segment, remove any intersections with the
-	 * destination, then add the source segment to the destination.
-	 */
-	for (ss = avl_first(t); ss != NULL; ss = AVL_NEXT(t, ss)) {
-		space_map_excise(smd, ss->ss_start, ss->ss_end - ss->ss_start);
-		space_map_add(smd, ss->ss_start, ss->ss_end - ss->ss_start);
-	}
-}
-
-/*
- * Wait for any in-progress space_map_load() to complete.
- */
-void
-space_map_load_wait(space_map_t *sm)
-{
-	ASSERT(MUTEX_HELD(sm->sm_lock));
-
-	while (sm->sm_loading)
-		cv_wait(&sm->sm_load_cv, sm->sm_lock);
-}
-
-/*
- * Note: space_map_load() will drop sm_lock across dmu_read() calls.
- * The caller must be OK with this.
- */
-int
-space_map_load(space_map_t *sm, space_map_ops_t *ops, uint8_t maptype,
-	space_map_obj_t *smo, objset_t *os)
-{
-	uint64_t *entry, *entry_map, *entry_map_end;
-	uint64_t bufsize, size, offset, end, space;
-	uint64_t mapstart = sm->sm_start;
-
-	ASSERT(MUTEX_HELD(sm->sm_lock));
-
-	space_map_load_wait(sm);
-
-	if (sm->sm_loaded)
-		return (0);
-
-	sm->sm_loading = B_TRUE;
-	end = smo->smo_objsize;
-	space = smo->smo_alloc;
-
-	ASSERT(sm->sm_ops == NULL);
-	VERIFY3U(sm->sm_space, ==, 0);
-
-	if (maptype == SM_FREE) {
-		space_map_add(sm, sm->sm_start, sm->sm_size);
-		space = sm->sm_size - space;
-	}
-
-	bufsize = 1ULL << SPACE_MAP_BLOCKSHIFT;
-	entry_map = zio_buf_alloc(bufsize);
-
-	mutex_exit(sm->sm_lock);
-	if (end > bufsize)
-		dmu_prefetch(os, smo->smo_object, bufsize, end - bufsize);
-	mutex_enter(sm->sm_lock);
-
-	for (offset = 0; offset < end; offset += bufsize) {
-		size = MIN(end - offset, bufsize);
-		VERIFY(P2PHASE(size, sizeof (uint64_t)) == 0);
-		VERIFY(size != 0);
-
-		dprintf("object=%llu  offset=%llx  size=%llx\n",
-		    smo->smo_object, offset, size);
-
-		mutex_exit(sm->sm_lock);
-		VERIFY3U(dmu_read(os, smo->smo_object, offset, size,
-		    entry_map), ==, 0);
-		mutex_enter(sm->sm_lock);
-
-		entry_map_end = entry_map + (size / sizeof (uint64_t));
-		for (entry = entry_map; entry < entry_map_end; entry++) {
-			uint64_t e = *entry;
-
-			if (SM_DEBUG_DECODE(e))		/* Skip debug entries */
-				continue;
-
-			(SM_TYPE_DECODE(e) == maptype ?
-			    space_map_add : space_map_remove)(sm,
-			    (SM_OFFSET_DECODE(e) << sm->sm_shift) + mapstart,
-			    SM_RUN_DECODE(e) << sm->sm_shift);
-		}
-	}
-	VERIFY3U(sm->sm_space, ==, space);
-
-	zio_buf_free(entry_map, bufsize);
-
-	sm->sm_loading = B_FALSE;
-	sm->sm_loaded = B_TRUE;
-	sm->sm_ops = ops;
-
-	cv_broadcast(&sm->sm_load_cv);
-
-	if (ops != NULL)
-		ops->smop_load(sm);
-
-	return (0);
-}
-
-void
-space_map_unload(space_map_t *sm)
-{
-	ASSERT(MUTEX_HELD(sm->sm_lock));
-
-	if (sm->sm_loaded && sm->sm_ops != NULL)
-		sm->sm_ops->smop_unload(sm);
-
-	sm->sm_loaded = B_FALSE;
-	sm->sm_ops = NULL;
-
-	space_map_vacate(sm, NULL, NULL);
-}
-
-uint64_t
-space_map_alloc(space_map_t *sm, uint64_t size)
-{
-	uint64_t start;
-
-	start = sm->sm_ops->smop_alloc(sm, size);
-	if (start != -1ULL)
-		space_map_remove(sm, start, size);
-	return (start);
-}
-
-void
-space_map_claim(space_map_t *sm, uint64_t start, uint64_t size)
-{
-	sm->sm_ops->smop_claim(sm, start, size);
-	space_map_remove(sm, start, size);
-}
-
-void
-space_map_free(space_map_t *sm, uint64_t start, uint64_t size)
-{
-	space_map_add(sm, start, size);
-	sm->sm_ops->smop_free(sm, start, size);
-}
-
-/*
- * Note: space_map_sync() will drop sm_lock across dmu_write() calls.
- */
-void
-space_map_sync(space_map_t *sm, uint8_t maptype,
-	space_map_obj_t *smo, objset_t *os, dmu_tx_t *tx)
-{
-	spa_t *spa = dmu_objset_spa(os);
-	void *cookie = NULL;
-	space_seg_t *ss;
-	uint64_t bufsize, start, size, run_len;
-	uint64_t *entry, *entry_map, *entry_map_end;
-
-	ASSERT(MUTEX_HELD(sm->sm_lock));
-
-	if (sm->sm_space == 0)
-		return;
-
-	dprintf("object %4llu, txg %llu, pass %d, %c, count %lu, space %llx\n",
-	    smo->smo_object, dmu_tx_get_txg(tx), spa_sync_pass(spa),
-	    maptype == SM_ALLOC ? 'A' : 'F', avl_numnodes(&sm->sm_root),
-	    sm->sm_space);
-
-	if (maptype == SM_ALLOC)
-		smo->smo_alloc += sm->sm_space;
-	else
-		smo->smo_alloc -= sm->sm_space;
-
-	bufsize = (8 + avl_numnodes(&sm->sm_root)) * sizeof (uint64_t);
-	bufsize = MIN(bufsize, 1ULL << SPACE_MAP_BLOCKSHIFT);
-	entry_map = zio_buf_alloc(bufsize);
-	entry_map_end = entry_map + (bufsize / sizeof (uint64_t));
-	entry = entry_map;
-
-	*entry++ = SM_DEBUG_ENCODE(1) |
-	    SM_DEBUG_ACTION_ENCODE(maptype) |
-	    SM_DEBUG_SYNCPASS_ENCODE(spa_sync_pass(spa)) |
-	    SM_DEBUG_TXG_ENCODE(dmu_tx_get_txg(tx));
-
-	while ((ss = avl_destroy_nodes(&sm->sm_root, &cookie)) != NULL) {
-		size = ss->ss_end - ss->ss_start;
-		start = (ss->ss_start - sm->sm_start) >> sm->sm_shift;
-
-		sm->sm_space -= size;
-		size >>= sm->sm_shift;
-
-		while (size) {
-			run_len = MIN(size, SM_RUN_MAX);
-
-			if (entry == entry_map_end) {
-				mutex_exit(sm->sm_lock);
-				dmu_write(os, smo->smo_object, smo->smo_objsize,
-				    bufsize, entry_map, tx);
-				mutex_enter(sm->sm_lock);
-				smo->smo_objsize += bufsize;
-				entry = entry_map;
-			}
-
-			*entry++ = SM_OFFSET_ENCODE(start) |
-			    SM_TYPE_ENCODE(maptype) |
-			    SM_RUN_ENCODE(run_len);
-
-			start += run_len;
-			size -= run_len;
-		}
-		kmem_free(ss, sizeof (*ss));
-	}
-
-	if (entry != entry_map) {
-		size = (entry - entry_map) * sizeof (uint64_t);
-		mutex_exit(sm->sm_lock);
-		dmu_write(os, smo->smo_object, smo->smo_objsize,
-		    size, entry_map, tx);
-		mutex_enter(sm->sm_lock);
-		smo->smo_objsize += size;
-	}
-
-	zio_buf_free(entry_map, bufsize);
-
-	VERIFY3U(sm->sm_space, ==, 0);
-}
-
-void
-space_map_truncate(space_map_obj_t *smo, objset_t *os, dmu_tx_t *tx)
-{
-	VERIFY(dmu_free_range(os, smo->smo_object, 0, -1ULL, tx) == 0);
-
-	smo->smo_objsize = 0;
-	smo->smo_alloc = 0;
-}