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Diffstat (limited to '')
| -rw-r--r-- | fs/bcachefs/alloc_foreground.h | 224 |
1 files changed, 224 insertions, 0 deletions
diff --git a/fs/bcachefs/alloc_foreground.h b/fs/bcachefs/alloc_foreground.h new file mode 100644 index 0000000000..7aaeec44c7 --- /dev/null +++ b/fs/bcachefs/alloc_foreground.h @@ -0,0 +1,224 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef _BCACHEFS_ALLOC_FOREGROUND_H +#define _BCACHEFS_ALLOC_FOREGROUND_H + +#include "bcachefs.h" +#include "alloc_types.h" +#include "extents.h" +#include "sb-members.h" + +#include <linux/hash.h> + +struct bkey; +struct bch_dev; +struct bch_fs; +struct bch_devs_List; + +extern const char * const bch2_watermarks[]; + +void bch2_reset_alloc_cursors(struct bch_fs *); + +struct dev_alloc_list { + unsigned nr; + u8 devs[BCH_SB_MEMBERS_MAX]; +}; + +struct dev_alloc_list bch2_dev_alloc_list(struct bch_fs *, + struct dev_stripe_state *, + struct bch_devs_mask *); +void bch2_dev_stripe_increment(struct bch_dev *, struct dev_stripe_state *); + +long bch2_bucket_alloc_new_fs(struct bch_dev *); + +struct open_bucket *bch2_bucket_alloc(struct bch_fs *, struct bch_dev *, + enum bch_watermark, struct closure *); + +static inline void ob_push(struct bch_fs *c, struct open_buckets *obs, + struct open_bucket *ob) +{ + BUG_ON(obs->nr >= ARRAY_SIZE(obs->v)); + + obs->v[obs->nr++] = ob - c->open_buckets; +} + +#define open_bucket_for_each(_c, _obs, _ob, _i) \ + for ((_i) = 0; \ + (_i) < (_obs)->nr && \ + ((_ob) = (_c)->open_buckets + (_obs)->v[_i], true); \ + (_i)++) + +static inline struct open_bucket *ec_open_bucket(struct bch_fs *c, + struct open_buckets *obs) +{ + struct open_bucket *ob; + unsigned i; + + open_bucket_for_each(c, obs, ob, i) + if (ob->ec) + return ob; + + return NULL; +} + +void bch2_open_bucket_write_error(struct bch_fs *, + struct open_buckets *, unsigned); + +void __bch2_open_bucket_put(struct bch_fs *, struct open_bucket *); + +static inline void bch2_open_bucket_put(struct bch_fs *c, struct open_bucket *ob) +{ + if (atomic_dec_and_test(&ob->pin)) + __bch2_open_bucket_put(c, ob); +} + +static inline void bch2_open_buckets_put(struct bch_fs *c, + struct open_buckets *ptrs) +{ + struct open_bucket *ob; + unsigned i; + + open_bucket_for_each(c, ptrs, ob, i) + bch2_open_bucket_put(c, ob); + ptrs->nr = 0; +} + +static inline void bch2_alloc_sectors_done_inlined(struct bch_fs *c, struct write_point *wp) +{ + struct open_buckets ptrs = { .nr = 0 }, keep = { .nr = 0 }; + struct open_bucket *ob; + unsigned i; + + open_bucket_for_each(c, &wp->ptrs, ob, i) + ob_push(c, !ob->sectors_free ? &ptrs : &keep, ob); + wp->ptrs = keep; + + mutex_unlock(&wp->lock); + + bch2_open_buckets_put(c, &ptrs); +} + +static inline void bch2_open_bucket_get(struct bch_fs *c, + struct write_point *wp, + struct open_buckets *ptrs) +{ + struct open_bucket *ob; + unsigned i; + + open_bucket_for_each(c, &wp->ptrs, ob, i) { + ob->data_type = wp->data_type; + atomic_inc(&ob->pin); + ob_push(c, ptrs, ob); + } +} + +static inline open_bucket_idx_t *open_bucket_hashslot(struct bch_fs *c, + unsigned dev, u64 bucket) +{ + return c->open_buckets_hash + + (jhash_3words(dev, bucket, bucket >> 32, 0) & + (OPEN_BUCKETS_COUNT - 1)); +} + +static inline bool bch2_bucket_is_open(struct bch_fs *c, unsigned dev, u64 bucket) +{ + open_bucket_idx_t slot = *open_bucket_hashslot(c, dev, bucket); + + while (slot) { + struct open_bucket *ob = &c->open_buckets[slot]; + + if (ob->dev == dev && ob->bucket == bucket) + return true; + + slot = ob->hash; + } + + return false; +} + +static inline bool bch2_bucket_is_open_safe(struct bch_fs *c, unsigned dev, u64 bucket) +{ + bool ret; + + if (bch2_bucket_is_open(c, dev, bucket)) + return true; + + spin_lock(&c->freelist_lock); + ret = bch2_bucket_is_open(c, dev, bucket); + spin_unlock(&c->freelist_lock); + + return ret; +} + +int bch2_bucket_alloc_set_trans(struct btree_trans *, struct open_buckets *, + struct dev_stripe_state *, struct bch_devs_mask *, + unsigned, unsigned *, bool *, unsigned, + enum bch_data_type, enum bch_watermark, + struct closure *); + +int bch2_alloc_sectors_start_trans(struct btree_trans *, + unsigned, unsigned, + struct write_point_specifier, + struct bch_devs_list *, + unsigned, unsigned, + enum bch_watermark, + unsigned, + struct closure *, + struct write_point **); + +struct bch_extent_ptr bch2_ob_ptr(struct bch_fs *, struct open_bucket *); + +/* + * Append pointers to the space we just allocated to @k, and mark @sectors space + * as allocated out of @ob + */ +static inline void +bch2_alloc_sectors_append_ptrs_inlined(struct bch_fs *c, struct write_point *wp, + struct bkey_i *k, unsigned sectors, + bool cached) +{ + struct open_bucket *ob; + unsigned i; + + BUG_ON(sectors > wp->sectors_free); + wp->sectors_free -= sectors; + wp->sectors_allocated += sectors; + + open_bucket_for_each(c, &wp->ptrs, ob, i) { + struct bch_dev *ca = bch_dev_bkey_exists(c, ob->dev); + struct bch_extent_ptr ptr = bch2_ob_ptr(c, ob); + + ptr.cached = cached || + (!ca->mi.durability && + wp->data_type == BCH_DATA_user); + + bch2_bkey_append_ptr(k, ptr); + + BUG_ON(sectors > ob->sectors_free); + ob->sectors_free -= sectors; + } +} + +void bch2_alloc_sectors_append_ptrs(struct bch_fs *, struct write_point *, + struct bkey_i *, unsigned, bool); +void bch2_alloc_sectors_done(struct bch_fs *, struct write_point *); + +void bch2_open_buckets_stop(struct bch_fs *c, struct bch_dev *, bool); + +static inline struct write_point_specifier writepoint_hashed(unsigned long v) +{ + return (struct write_point_specifier) { .v = v | 1 }; +} + +static inline struct write_point_specifier writepoint_ptr(struct write_point *wp) +{ + return (struct write_point_specifier) { .v = (unsigned long) wp }; +} + +void bch2_fs_allocator_foreground_init(struct bch_fs *); + +void bch2_open_buckets_to_text(struct printbuf *, struct bch_fs *); +void bch2_open_buckets_partial_to_text(struct printbuf *, struct bch_fs *); + +void bch2_write_points_to_text(struct printbuf *, struct bch_fs *); + +#endif /* _BCACHEFS_ALLOC_FOREGROUND_H */ |