b092dadd55
this means we don't have to reserve space for them when calculating filesystem capacity Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
114 lines
2.8 KiB
C
114 lines
2.8 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _BCACHEFS_ALLOC_FOREGROUND_H
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#define _BCACHEFS_ALLOC_FOREGROUND_H
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#include "bcachefs.h"
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#include "alloc_types.h"
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#include <linux/hash.h>
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struct bkey;
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struct bch_dev;
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struct bch_fs;
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struct bch_devs_List;
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struct dev_alloc_list {
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unsigned nr;
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u8 devs[BCH_SB_MEMBERS_MAX];
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};
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struct dev_alloc_list bch2_wp_alloc_list(struct bch_fs *,
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struct write_point *,
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struct bch_devs_mask *);
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void bch2_wp_rescale(struct bch_fs *, struct bch_dev *,
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struct write_point *);
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long bch2_bucket_alloc_new_fs(struct bch_dev *);
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struct open_bucket *bch2_bucket_alloc(struct bch_fs *, struct bch_dev *,
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enum alloc_reserve, bool,
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struct closure *);
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static inline void ob_push(struct bch_fs *c, struct open_buckets *obs,
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struct open_bucket *ob)
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{
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BUG_ON(obs->nr >= ARRAY_SIZE(obs->v));
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obs->v[obs->nr++] = ob - c->open_buckets;
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}
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#define open_bucket_for_each(_c, _obs, _ob, _i) \
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for ((_i) = 0; \
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(_i) < (_obs)->nr && \
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((_ob) = (_c)->open_buckets + (_obs)->v[_i], true); \
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(_i)++)
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void __bch2_open_bucket_put(struct bch_fs *, struct open_bucket *);
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static inline void bch2_open_bucket_put(struct bch_fs *c, struct open_bucket *ob)
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{
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if (atomic_dec_and_test(&ob->pin))
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__bch2_open_bucket_put(c, ob);
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}
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static inline void bch2_open_buckets_put(struct bch_fs *c,
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struct open_buckets *ptrs)
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{
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struct open_bucket *ob;
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unsigned i;
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open_bucket_for_each(c, ptrs, ob, i)
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bch2_open_bucket_put(c, ob);
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ptrs->nr = 0;
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}
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static inline void bch2_open_bucket_get(struct bch_fs *c,
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struct write_point *wp,
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struct open_buckets *ptrs)
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{
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struct open_bucket *ob;
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unsigned i;
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open_bucket_for_each(c, &wp->ptrs, ob, i) {
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atomic_inc(&ob->pin);
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ob_push(c, ptrs, ob);
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}
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}
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struct write_point *bch2_alloc_sectors_start(struct bch_fs *,
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unsigned,
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struct write_point_specifier,
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struct bch_devs_list *,
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unsigned, unsigned,
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enum alloc_reserve,
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unsigned,
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struct closure *);
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void bch2_alloc_sectors_append_ptrs(struct bch_fs *, struct write_point *,
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struct bkey_i_extent *, unsigned);
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void bch2_alloc_sectors_done(struct bch_fs *, struct write_point *);
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void bch2_writepoint_stop(struct bch_fs *, struct bch_dev *,
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struct write_point *);
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static inline struct write_point_specifier writepoint_hashed(unsigned long v)
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{
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return (struct write_point_specifier) { .v = v | 1 };
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}
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static inline struct write_point_specifier writepoint_ptr(struct write_point *wp)
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{
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return (struct write_point_specifier) { .v = (unsigned long) wp };
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}
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static inline void writepoint_init(struct write_point *wp,
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enum bch_data_type type)
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{
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mutex_init(&wp->lock);
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wp->type = type;
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}
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void bch2_fs_allocator_foreground_init(struct bch_fs *);
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#endif /* _BCACHEFS_ALLOC_FOREGROUND_H */
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