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Rebase master to b117

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This commit is contained in:
Brian Behlendorf
2009-07-02 15:44:48 -07:00
parent d164b20935
commit 9babb37438
103 changed files with 7629 additions and 4093 deletions
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module/zfs/space_map.c
+35 -2
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@@ -19,7 +19,7 @@
* CDDL HEADER END
*/
/*
* Copyright 2008 Sun Microsystems, Inc. All rights reserved.
* Copyright 2009 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
@@ -116,12 +116,23 @@ space_map_add(space_map_t *sm, uint64_t start, uint64_t size)
if (merge_before && merge_after) {
avl_remove(&sm->sm_root, ss_before);
if (sm->sm_pp_root) {
avl_remove(sm->sm_pp_root, ss_before);
avl_remove(sm->sm_pp_root, ss_after);
}
ss_after->ss_start = ss_before->ss_start;
kmem_free(ss_before, sizeof (*ss_before));
ss = ss_after;
} else if (merge_before) {
ss_before->ss_end = end;
if (sm->sm_pp_root)
avl_remove(sm->sm_pp_root, ss_before);
ss = ss_before;
} else if (merge_after) {
ss_after->ss_start = start;
if (sm->sm_pp_root)
avl_remove(sm->sm_pp_root, ss_after);
ss = ss_after;
} else {
ss = kmem_alloc(sizeof (*ss), KM_SLEEP);
ss->ss_start = start;
@@ -129,6 +140,9 @@ space_map_add(space_map_t *sm, uint64_t start, uint64_t size)
avl_insert(&sm->sm_root, ss, where);
}
if (sm->sm_pp_root)
avl_add(sm->sm_pp_root, ss);
sm->sm_space += size;
}
@@ -163,12 +177,17 @@ space_map_remove(space_map_t *sm, uint64_t start, uint64_t size)
left_over = (ss->ss_start != start);
right_over = (ss->ss_end != end);
if (sm->sm_pp_root)
avl_remove(sm->sm_pp_root, ss);
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);
if (sm->sm_pp_root)
avl_add(sm->sm_pp_root, newseg);
} else if (left_over) {
ss->ss_end = start;
} else if (right_over) {
@@ -176,8 +195,12 @@ space_map_remove(space_map_t *sm, uint64_t start, uint64_t size)
} else {
avl_remove(&sm->sm_root, ss);
kmem_free(ss, sizeof (*ss));
ss = NULL;
}
if (sm->sm_pp_root && ss != NULL)
avl_add(sm->sm_pp_root, ss);
sm->sm_space -= size;
}
@@ -288,7 +311,8 @@ space_map_load(space_map_t *sm, space_map_ops_t *ops, uint8_t maptype,
smo->smo_object, offset, size);
mutex_exit(sm->sm_lock);
error = dmu_read(os, smo->smo_object, offset, size, entry_map);
error = dmu_read(os, smo->smo_object, offset, size, entry_map,
DMU_READ_PREFETCH);
mutex_enter(sm->sm_lock);
if (error != 0)
break;
@@ -341,6 +365,15 @@ space_map_unload(space_map_t *sm)
space_map_vacate(sm, NULL, NULL);
}
uint64_t
space_map_maxsize(space_map_t *sm)
{
if (sm->sm_loaded && sm->sm_ops != NULL)
return (sm->sm_ops->smop_max(sm));
else
return (-1ULL);
}
uint64_t
space_map_alloc(space_map_t *sm, uint64_t size)
{