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 12 struct bkey; 13 struct bch_dev; 14 struct bch_fs; 15 struct bch_devs_List; 16 17 extern const char * const bch2_watermarks[]; 18 19 void bch2_reset_alloc_cursors(struct bch_fs *); 20 21 struct dev_alloc_list { 22 unsigned nr; 23 u8 data[BCH_SB_MEMBERS_MAX]; 24 }; 25 26 struct dev_alloc_list bch2_dev_alloc_list(struct bch_fs *, 27 struct dev_stripe_state *, 28 struct bch_devs_mask *); 29 void bch2_dev_stripe_increment(struct bch_dev *, struct dev_stripe_state *); 30 31 static inline struct bch_dev *ob_dev(struct bch_fs *c, struct open_bucket *ob) 32 { 33 return bch2_dev_have_ref(c, ob->dev); 34 } 35 36 static inline unsigned bch2_open_buckets_reserved(enum bch_watermark watermark) 37 { 38 switch (watermark) { 39 case BCH_WATERMARK_interior_updates: 40 return 0; 41 case BCH_WATERMARK_reclaim: 42 return OPEN_BUCKETS_COUNT / 6; 43 case BCH_WATERMARK_btree: 44 case BCH_WATERMARK_btree_copygc: 45 return OPEN_BUCKETS_COUNT / 4; 46 case BCH_WATERMARK_copygc: 47 return OPEN_BUCKETS_COUNT / 3; 48 default: 49 return OPEN_BUCKETS_COUNT / 2; 50 } 51 } 52 53 struct open_bucket *bch2_bucket_alloc(struct bch_fs *, struct bch_dev *, 54 enum bch_watermark, enum bch_data_type, 55 struct closure *); 56 57 static inline void ob_push(struct bch_fs *c, struct open_buckets *obs, 58 struct open_bucket *ob) 59 { 60 BUG_ON(obs->nr >= ARRAY_SIZE(obs->v)); 61 62 obs->v[obs->nr++] = ob - c->open_buckets; 63 } 64 65 #define open_bucket_for_each(_c, _obs, _ob, _i) \ 66 for ((_i) = 0; \ 67 (_i) < (_obs)->nr && \ 68 ((_ob) = (_c)->open_buckets + (_obs)->v[_i], true); \ 69 (_i)++) 70 71 static inline struct open_bucket *ec_open_bucket(struct bch_fs *c, 72 struct open_buckets *obs) 73 { 74 struct open_bucket *ob; 75 unsigned i; 76 77 open_bucket_for_each(c, obs, ob, i) 78 if (ob->ec) 79 return ob; 80 81 return NULL; 82 } 83 84 void bch2_open_bucket_write_error(struct bch_fs *, 85 struct open_buckets *, unsigned, int); 86 87 void __bch2_open_bucket_put(struct bch_fs *, struct open_bucket *); 88 89 static inline void bch2_open_bucket_put(struct bch_fs *c, struct open_bucket *ob) 90 { 91 if (atomic_dec_and_test(&ob->pin)) 92 __bch2_open_bucket_put(c, ob); 93 } 94 95 static inline void bch2_open_buckets_put(struct bch_fs *c, 96 struct open_buckets *ptrs) 97 { 98 struct open_bucket *ob; 99 unsigned i; 100 101 open_bucket_for_each(c, ptrs, ob, i) 102 bch2_open_bucket_put(c, ob); 103 ptrs->nr = 0; 104 } 105 106 static inline void bch2_alloc_sectors_done_inlined(struct bch_fs *c, struct write_point *wp) 107 { 108 struct open_buckets ptrs = { .nr = 0 }, keep = { .nr = 0 }; 109 struct open_bucket *ob; 110 unsigned i; 111 112 open_bucket_for_each(c, &wp->ptrs, ob, i) 113 ob_push(c, !ob->sectors_free ? &ptrs : &keep, ob); 114 wp->ptrs = keep; 115 116 mutex_unlock(&wp->lock); 117 118 bch2_open_buckets_put(c, &ptrs); 119 } 120 121 static inline void bch2_open_bucket_get(struct bch_fs *c, 122 struct write_point *wp, 123 struct open_buckets *ptrs) 124 { 125 struct open_bucket *ob; 126 unsigned i; 127 128 open_bucket_for_each(c, &wp->ptrs, ob, i) { 129 ob->data_type = wp->data_type; 130 atomic_inc(&ob->pin); 131 ob_push(c, ptrs, ob); 132 } 133 } 134 135 static inline open_bucket_idx_t *open_bucket_hashslot(struct bch_fs *c, 136 unsigned dev, u64 bucket) 137 { 138 return c->open_buckets_hash + 139 (jhash_3words(dev, bucket, bucket >> 32, 0) & 140 (OPEN_BUCKETS_COUNT - 1)); 141 } 142 143 static inline bool bch2_bucket_is_open(struct bch_fs *c, unsigned dev, u64 bucket) 144 { 145 open_bucket_idx_t slot = *open_bucket_hashslot(c, dev, bucket); 146 147 while (slot) { 148 struct open_bucket *ob = &c->open_buckets[slot]; 149 150 if (ob->dev == dev && ob->bucket == bucket) 151 return true; 152 153 slot = ob->hash; 154 } 155 156 return false; 157 } 158 159 static inline bool bch2_bucket_is_open_safe(struct bch_fs *c, unsigned dev, u64 bucket) 160 { 161 bool ret; 162 163 if (bch2_bucket_is_open(c, dev, bucket)) 164 return true; 165 166 spin_lock(&c->freelist_lock); 167 ret = bch2_bucket_is_open(c, dev, bucket); 168 spin_unlock(&c->freelist_lock); 169 170 return ret; 171 } 172 173 enum bch_write_flags; 174 int bch2_bucket_alloc_set_trans(struct btree_trans *, struct open_buckets *, 175 struct dev_stripe_state *, struct bch_devs_mask *, 176 unsigned, unsigned *, bool *, enum bch_write_flags, 177 enum bch_data_type, enum bch_watermark, 178 struct closure *); 179 180 int bch2_alloc_sectors_start_trans(struct btree_trans *, 181 unsigned, unsigned, 182 struct write_point_specifier, 183 struct bch_devs_list *, 184 unsigned, unsigned, 185 enum bch_watermark, 186 enum bch_write_flags, 187 struct closure *, 188 struct write_point **); 189 190 struct bch_extent_ptr bch2_ob_ptr(struct bch_fs *, struct open_bucket *); 191 192 /* 193 * Append pointers to the space we just allocated to @k, and mark @sectors space 194 * as allocated out of @ob 195 */ 196 static inline void 197 bch2_alloc_sectors_append_ptrs_inlined(struct bch_fs *c, struct write_point *wp, 198 struct bkey_i *k, unsigned sectors, 199 bool cached) 200 { 201 struct open_bucket *ob; 202 unsigned i; 203 204 BUG_ON(sectors > wp->sectors_free); 205 wp->sectors_free -= sectors; 206 wp->sectors_allocated += sectors; 207 208 open_bucket_for_each(c, &wp->ptrs, ob, i) { 209 struct bch_dev *ca = ob_dev(c, ob); 210 struct bch_extent_ptr ptr = bch2_ob_ptr(c, ob); 211 212 ptr.cached = cached || 213 (!ca->mi.durability && 214 wp->data_type == BCH_DATA_user); 215 216 bch2_bkey_append_ptr(k, ptr); 217 218 BUG_ON(sectors > ob->sectors_free); 219 ob->sectors_free -= sectors; 220 } 221 } 222 223 void bch2_alloc_sectors_append_ptrs(struct bch_fs *, struct write_point *, 224 struct bkey_i *, unsigned, bool); 225 void bch2_alloc_sectors_done(struct bch_fs *, struct write_point *); 226 227 void bch2_open_buckets_stop(struct bch_fs *c, struct bch_dev *, bool); 228 229 static inline struct write_point_specifier writepoint_hashed(unsigned long v) 230 { 231 return (struct write_point_specifier) { .v = v | 1 }; 232 } 233 234 static inline struct write_point_specifier writepoint_ptr(struct write_point *wp) 235 { 236 return (struct write_point_specifier) { .v = (unsigned long) wp }; 237 } 238 239 void bch2_fs_allocator_foreground_init(struct bch_fs *); 240 241 void bch2_open_bucket_to_text(struct printbuf *, struct bch_fs *, struct open_bucket *); 242 void bch2_open_buckets_to_text(struct printbuf *, struct bch_fs *, struct bch_dev *); 243 void bch2_open_buckets_partial_to_text(struct printbuf *, struct bch_fs *); 244 245 void bch2_write_points_to_text(struct printbuf *, struct bch_fs *); 246 247 void bch2_fs_alloc_debug_to_text(struct printbuf *, struct bch_fs *); 248 void bch2_dev_alloc_debug_to_text(struct printbuf *, struct bch_dev *); 249 250 void __bch2_wait_on_allocator(struct bch_fs *, struct closure *); 251 static inline void bch2_wait_on_allocator(struct bch_fs *c, struct closure *cl) 252 { 253 if (cl->closure_get_happened) 254 __bch2_wait_on_allocator(c, cl); 255 } 256 257 #endif /* _BCACHEFS_ALLOC_FOREGROUND_H */ 258