1/* SPDX-License-Identifier: GPL-2.0 */ 2#ifndef _BCACHEFS_ALLOC_FOREGROUND_H 3#define _BCACHEFS_ALLOC_FOREGROUND_H 4 5#include "bcachefs.h" 6#include "alloc_types.h" 7#include "extents.h" 8#include "sb-members.h" 9 10#include <linux/hash.h> 11 12struct bkey; 13struct bch_dev; 14struct bch_fs; 15struct bch_devs_List; 16 17extern const char * const bch2_watermarks[]; 18 19void bch2_reset_alloc_cursors(struct bch_fs *); 20 21struct dev_alloc_list { 22 unsigned nr; 23 u8 devs[BCH_SB_MEMBERS_MAX]; 24}; 25 26struct dev_alloc_list bch2_dev_alloc_list(struct bch_fs *, 27 struct dev_stripe_state *, 28 struct bch_devs_mask *); 29void bch2_dev_stripe_increment(struct bch_dev *, struct dev_stripe_state *); 30 31long bch2_bucket_alloc_new_fs(struct bch_dev *); 32 33struct open_bucket *bch2_bucket_alloc(struct bch_fs *, struct bch_dev *, 34 enum bch_watermark, struct closure *); 35 36static inline void ob_push(struct bch_fs *c, struct open_buckets *obs, 37 struct open_bucket *ob) 38{ 39 BUG_ON(obs->nr >= ARRAY_SIZE(obs->v)); 40 41 obs->v[obs->nr++] = ob - c->open_buckets; 42} 43 44#define open_bucket_for_each(_c, _obs, _ob, _i) \ 45 for ((_i) = 0; \ 46 (_i) < (_obs)->nr && \ 47 ((_ob) = (_c)->open_buckets + (_obs)->v[_i], true); \ 48 (_i)++) 49 50static inline struct open_bucket *ec_open_bucket(struct bch_fs *c, 51 struct open_buckets *obs) 52{ 53 struct open_bucket *ob; 54 unsigned i; 55 56 open_bucket_for_each(c, obs, ob, i) 57 if (ob->ec) 58 return ob; 59 60 return NULL; 61} 62 63void bch2_open_bucket_write_error(struct bch_fs *, 64 struct open_buckets *, unsigned); 65 66void __bch2_open_bucket_put(struct bch_fs *, struct open_bucket *); 67 68static inline void bch2_open_bucket_put(struct bch_fs *c, struct open_bucket *ob) 69{ 70 if (atomic_dec_and_test(&ob->pin)) 71 __bch2_open_bucket_put(c, ob); 72} 73 74static inline void bch2_open_buckets_put(struct bch_fs *c, 75 struct open_buckets *ptrs) 76{ 77 struct open_bucket *ob; 78 unsigned i; 79 80 open_bucket_for_each(c, ptrs, ob, i) 81 bch2_open_bucket_put(c, ob); 82 ptrs->nr = 0; 83} 84 85static inline void bch2_alloc_sectors_done_inlined(struct bch_fs *c, struct write_point *wp) 86{ 87 struct open_buckets ptrs = { .nr = 0 }, keep = { .nr = 0 }; 88 struct open_bucket *ob; 89 unsigned i; 90 91 open_bucket_for_each(c, &wp->ptrs, ob, i) 92 ob_push(c, !ob->sectors_free ? &ptrs : &keep, ob); 93 wp->ptrs = keep; 94 95 mutex_unlock(&wp->lock); 96 97 bch2_open_buckets_put(c, &ptrs); 98} 99 100static inline void bch2_open_bucket_get(struct bch_fs *c, 101 struct write_point *wp, 102 struct open_buckets *ptrs) 103{ 104 struct open_bucket *ob; 105 unsigned i; 106 107 open_bucket_for_each(c, &wp->ptrs, ob, i) { 108 ob->data_type = wp->data_type; 109 atomic_inc(&ob->pin); 110 ob_push(c, ptrs, ob); 111 } 112} 113 114static inline open_bucket_idx_t *open_bucket_hashslot(struct bch_fs *c, 115 unsigned dev, u64 bucket) 116{ 117 return c->open_buckets_hash + 118 (jhash_3words(dev, bucket, bucket >> 32, 0) & 119 (OPEN_BUCKETS_COUNT - 1)); 120} 121 122static inline bool bch2_bucket_is_open(struct bch_fs *c, unsigned dev, u64 bucket) 123{ 124 open_bucket_idx_t slot = *open_bucket_hashslot(c, dev, bucket); 125 126 while (slot) { 127 struct open_bucket *ob = &c->open_buckets[slot]; 128 129 if (ob->dev == dev && ob->bucket == bucket) 130 return true; 131 132 slot = ob->hash; 133 } 134 135 return false; 136} 137 138static inline bool bch2_bucket_is_open_safe(struct bch_fs *c, unsigned dev, u64 bucket) 139{ 140 bool ret; 141 142 if (bch2_bucket_is_open(c, dev, bucket)) 143 return true; 144 145 spin_lock(&c->freelist_lock); 146 ret = bch2_bucket_is_open(c, dev, bucket); 147 spin_unlock(&c->freelist_lock); 148 149 return ret; 150} 151 152int bch2_bucket_alloc_set_trans(struct btree_trans *, struct open_buckets *, 153 struct dev_stripe_state *, struct bch_devs_mask *, 154 unsigned, unsigned *, bool *, unsigned, 155 enum bch_data_type, enum bch_watermark, 156 struct closure *); 157 158int bch2_alloc_sectors_start_trans(struct btree_trans *, 159 unsigned, unsigned, 160 struct write_point_specifier, 161 struct bch_devs_list *, 162 unsigned, unsigned, 163 enum bch_watermark, 164 unsigned, 165 struct closure *, 166 struct write_point **); 167 168struct bch_extent_ptr bch2_ob_ptr(struct bch_fs *, struct open_bucket *); 169 170/* 171 * Append pointers to the space we just allocated to @k, and mark @sectors space 172 * as allocated out of @ob 173 */ 174static inline void 175bch2_alloc_sectors_append_ptrs_inlined(struct bch_fs *c, struct write_point *wp, 176 struct bkey_i *k, unsigned sectors, 177 bool cached) 178{ 179 struct open_bucket *ob; 180 unsigned i; 181 182 BUG_ON(sectors > wp->sectors_free); 183 wp->sectors_free -= sectors; 184 wp->sectors_allocated += sectors; 185 186 open_bucket_for_each(c, &wp->ptrs, ob, i) { 187 struct bch_dev *ca = bch_dev_bkey_exists(c, ob->dev); 188 struct bch_extent_ptr ptr = bch2_ob_ptr(c, ob); 189 190 ptr.cached = cached || 191 (!ca->mi.durability && 192 wp->data_type == BCH_DATA_user); 193 194 bch2_bkey_append_ptr(k, ptr); 195 196 BUG_ON(sectors > ob->sectors_free); 197 ob->sectors_free -= sectors; 198 } 199} 200 201void bch2_alloc_sectors_append_ptrs(struct bch_fs *, struct write_point *, 202 struct bkey_i *, unsigned, bool); 203void bch2_alloc_sectors_done(struct bch_fs *, struct write_point *); 204 205void bch2_open_buckets_stop(struct bch_fs *c, struct bch_dev *, bool); 206 207static inline struct write_point_specifier writepoint_hashed(unsigned long v) 208{ 209 return (struct write_point_specifier) { .v = v | 1 }; 210} 211 212static inline struct write_point_specifier writepoint_ptr(struct write_point *wp) 213{ 214 return (struct write_point_specifier) { .v = (unsigned long) wp }; 215} 216 217void bch2_fs_allocator_foreground_init(struct bch_fs *); 218 219void bch2_open_buckets_to_text(struct printbuf *, struct bch_fs *); 220void bch2_open_buckets_partial_to_text(struct printbuf *, struct bch_fs *); 221 222void bch2_write_points_to_text(struct printbuf *, struct bch_fs *); 223 224#endif /* _BCACHEFS_ALLOC_FOREGROUND_H */ 225