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488a58a998
o Changed pv_map.c to maintain the list of free areas in size order, which is more helpful to the allocators. If you want to allocate a bit of an area call consume_area(area, size), this will adjust the area if there's some space left and shuffle it to the correct place in the list. Not tested.
44 lines
798 B
C
44 lines
798 B
C
/*
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* Copyright (C) 2001 Sistina Software
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*
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* This file is released under the LGPL.
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*/
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#ifndef _LVM_PV_MAP_H
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#define _LVM_PV_MAP_H
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#include "metadata.h"
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#include "bitset.h"
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#include "pool.h"
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/*
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* The in core rep. only stores a mapping from
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* logical extents to physical extents against an
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* lv. Sometimes, when allocating a new lv for
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* instance, it is useful to have the inverse
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* mapping available.
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*/
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struct pv_area {
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struct pv_map *map;
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uint32_t start;
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uint32_t count;
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struct list list;
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};
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struct pv_map {
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struct physical_volume *pv;
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bitset_t allocated_extents;
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struct list areas;
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struct list list;
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};
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struct list *create_pv_maps(struct pool *mem,
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struct volume_group *vg, struct list *pvs);
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void consume_pv_area(struct pv_area *area, uint32_t to_go);
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#endif
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