17c1a000dSChao Yu // SPDX-License-Identifier: GPL-2.0 2a28ef1f5SChao Yu /* 3a28ef1f5SChao Yu * f2fs extent cache support 4a28ef1f5SChao Yu * 5a28ef1f5SChao Yu * Copyright (c) 2015 Motorola Mobility 6a28ef1f5SChao Yu * Copyright (c) 2015 Samsung Electronics 7a28ef1f5SChao Yu * Authors: Jaegeuk Kim <jaegeuk@kernel.org> 8a28ef1f5SChao Yu * Chao Yu <chao2.yu@samsung.com> 9a28ef1f5SChao Yu */ 10a28ef1f5SChao Yu 11a28ef1f5SChao Yu #include <linux/fs.h> 12a28ef1f5SChao Yu #include <linux/f2fs_fs.h> 13a28ef1f5SChao Yu 14a28ef1f5SChao Yu #include "f2fs.h" 15a28ef1f5SChao Yu #include "node.h" 16a28ef1f5SChao Yu #include <trace/events/f2fs.h> 17a28ef1f5SChao Yu 1854c2258cSChao Yu static struct rb_entry *__lookup_rb_tree_fast(struct rb_entry *cached_re, 1954c2258cSChao Yu unsigned int ofs) 2054c2258cSChao Yu { 2154c2258cSChao Yu if (cached_re) { 2254c2258cSChao Yu if (cached_re->ofs <= ofs && 2354c2258cSChao Yu cached_re->ofs + cached_re->len > ofs) { 2454c2258cSChao Yu return cached_re; 2554c2258cSChao Yu } 2654c2258cSChao Yu } 2754c2258cSChao Yu return NULL; 2854c2258cSChao Yu } 2954c2258cSChao Yu 304dada3fdSChao Yu static struct rb_entry *__lookup_rb_tree_slow(struct rb_root_cached *root, 3154c2258cSChao Yu unsigned int ofs) 3254c2258cSChao Yu { 334dada3fdSChao Yu struct rb_node *node = root->rb_root.rb_node; 3454c2258cSChao Yu struct rb_entry *re; 3554c2258cSChao Yu 3654c2258cSChao Yu while (node) { 3754c2258cSChao Yu re = rb_entry(node, struct rb_entry, rb_node); 3854c2258cSChao Yu 3954c2258cSChao Yu if (ofs < re->ofs) 4054c2258cSChao Yu node = node->rb_left; 4154c2258cSChao Yu else if (ofs >= re->ofs + re->len) 4254c2258cSChao Yu node = node->rb_right; 4354c2258cSChao Yu else 4454c2258cSChao Yu return re; 4554c2258cSChao Yu } 4654c2258cSChao Yu return NULL; 4754c2258cSChao Yu } 4854c2258cSChao Yu 494dada3fdSChao Yu struct rb_entry *f2fs_lookup_rb_tree(struct rb_root_cached *root, 5054c2258cSChao Yu struct rb_entry *cached_re, unsigned int ofs) 5154c2258cSChao Yu { 5254c2258cSChao Yu struct rb_entry *re; 5354c2258cSChao Yu 5454c2258cSChao Yu re = __lookup_rb_tree_fast(cached_re, ofs); 5554c2258cSChao Yu if (!re) 5654c2258cSChao Yu return __lookup_rb_tree_slow(root, ofs); 5754c2258cSChao Yu 5854c2258cSChao Yu return re; 5954c2258cSChao Yu } 6054c2258cSChao Yu 614d57b86dSChao Yu struct rb_node **f2fs_lookup_rb_tree_for_insert(struct f2fs_sb_info *sbi, 624dada3fdSChao Yu struct rb_root_cached *root, 634dada3fdSChao Yu struct rb_node **parent, 644dada3fdSChao Yu unsigned int ofs, bool *leftmost) 6554c2258cSChao Yu { 664dada3fdSChao Yu struct rb_node **p = &root->rb_root.rb_node; 6754c2258cSChao Yu struct rb_entry *re; 6854c2258cSChao Yu 6954c2258cSChao Yu while (*p) { 7054c2258cSChao Yu *parent = *p; 7154c2258cSChao Yu re = rb_entry(*parent, struct rb_entry, rb_node); 7254c2258cSChao Yu 734dada3fdSChao Yu if (ofs < re->ofs) { 7454c2258cSChao Yu p = &(*p)->rb_left; 754dada3fdSChao Yu } else if (ofs >= re->ofs + re->len) { 7654c2258cSChao Yu p = &(*p)->rb_right; 774dada3fdSChao Yu *leftmost = false; 784dada3fdSChao Yu } else { 7954c2258cSChao Yu f2fs_bug_on(sbi, 1); 8054c2258cSChao Yu } 814dada3fdSChao Yu } 8254c2258cSChao Yu 8354c2258cSChao Yu return p; 8454c2258cSChao Yu } 8554c2258cSChao Yu 8654c2258cSChao Yu /* 8754c2258cSChao Yu * lookup rb entry in position of @ofs in rb-tree, 8854c2258cSChao Yu * if hit, return the entry, otherwise, return NULL 8954c2258cSChao Yu * @prev_ex: extent before ofs 9054c2258cSChao Yu * @next_ex: extent after ofs 9154c2258cSChao Yu * @insert_p: insert point for new extent at ofs 9254c2258cSChao Yu * in order to simpfy the insertion after. 9354c2258cSChao Yu * tree must stay unchanged between lookup and insertion. 9454c2258cSChao Yu */ 954dada3fdSChao Yu struct rb_entry *f2fs_lookup_rb_tree_ret(struct rb_root_cached *root, 9654c2258cSChao Yu struct rb_entry *cached_re, 9754c2258cSChao Yu unsigned int ofs, 9854c2258cSChao Yu struct rb_entry **prev_entry, 9954c2258cSChao Yu struct rb_entry **next_entry, 10054c2258cSChao Yu struct rb_node ***insert_p, 101004b6862SChao Yu struct rb_node **insert_parent, 1024dada3fdSChao Yu bool force, bool *leftmost) 10354c2258cSChao Yu { 1044dada3fdSChao Yu struct rb_node **pnode = &root->rb_root.rb_node; 10554c2258cSChao Yu struct rb_node *parent = NULL, *tmp_node; 10654c2258cSChao Yu struct rb_entry *re = cached_re; 10754c2258cSChao Yu 10854c2258cSChao Yu *insert_p = NULL; 10954c2258cSChao Yu *insert_parent = NULL; 11054c2258cSChao Yu *prev_entry = NULL; 11154c2258cSChao Yu *next_entry = NULL; 11254c2258cSChao Yu 1134dada3fdSChao Yu if (RB_EMPTY_ROOT(&root->rb_root)) 11454c2258cSChao Yu return NULL; 11554c2258cSChao Yu 11654c2258cSChao Yu if (re) { 11754c2258cSChao Yu if (re->ofs <= ofs && re->ofs + re->len > ofs) 11854c2258cSChao Yu goto lookup_neighbors; 11954c2258cSChao Yu } 12054c2258cSChao Yu 1214dada3fdSChao Yu if (leftmost) 1224dada3fdSChao Yu *leftmost = true; 1234dada3fdSChao Yu 12454c2258cSChao Yu while (*pnode) { 12554c2258cSChao Yu parent = *pnode; 12654c2258cSChao Yu re = rb_entry(*pnode, struct rb_entry, rb_node); 12754c2258cSChao Yu 1284dada3fdSChao Yu if (ofs < re->ofs) { 12954c2258cSChao Yu pnode = &(*pnode)->rb_left; 1304dada3fdSChao Yu } else if (ofs >= re->ofs + re->len) { 13154c2258cSChao Yu pnode = &(*pnode)->rb_right; 1324dada3fdSChao Yu if (leftmost) 1334dada3fdSChao Yu *leftmost = false; 1344dada3fdSChao Yu } else { 13554c2258cSChao Yu goto lookup_neighbors; 13654c2258cSChao Yu } 1374dada3fdSChao Yu } 13854c2258cSChao Yu 13954c2258cSChao Yu *insert_p = pnode; 14054c2258cSChao Yu *insert_parent = parent; 14154c2258cSChao Yu 14254c2258cSChao Yu re = rb_entry(parent, struct rb_entry, rb_node); 14354c2258cSChao Yu tmp_node = parent; 14454c2258cSChao Yu if (parent && ofs > re->ofs) 14554c2258cSChao Yu tmp_node = rb_next(parent); 14654c2258cSChao Yu *next_entry = rb_entry_safe(tmp_node, struct rb_entry, rb_node); 14754c2258cSChao Yu 14854c2258cSChao Yu tmp_node = parent; 14954c2258cSChao Yu if (parent && ofs < re->ofs) 15054c2258cSChao Yu tmp_node = rb_prev(parent); 15154c2258cSChao Yu *prev_entry = rb_entry_safe(tmp_node, struct rb_entry, rb_node); 15254c2258cSChao Yu return NULL; 15354c2258cSChao Yu 15454c2258cSChao Yu lookup_neighbors: 155004b6862SChao Yu if (ofs == re->ofs || force) { 15654c2258cSChao Yu /* lookup prev node for merging backward later */ 15754c2258cSChao Yu tmp_node = rb_prev(&re->rb_node); 15854c2258cSChao Yu *prev_entry = rb_entry_safe(tmp_node, struct rb_entry, rb_node); 15954c2258cSChao Yu } 160004b6862SChao Yu if (ofs == re->ofs + re->len - 1 || force) { 16154c2258cSChao Yu /* lookup next node for merging frontward later */ 16254c2258cSChao Yu tmp_node = rb_next(&re->rb_node); 16354c2258cSChao Yu *next_entry = rb_entry_safe(tmp_node, struct rb_entry, rb_node); 16454c2258cSChao Yu } 16554c2258cSChao Yu return re; 16654c2258cSChao Yu } 16754c2258cSChao Yu 1684d57b86dSChao Yu bool f2fs_check_rb_tree_consistence(struct f2fs_sb_info *sbi, 1694dada3fdSChao Yu struct rb_root_cached *root) 170df0f6b44SChao Yu { 171df0f6b44SChao Yu #ifdef CONFIG_F2FS_CHECK_FS 1724dada3fdSChao Yu struct rb_node *cur = rb_first_cached(root), *next; 173df0f6b44SChao Yu struct rb_entry *cur_re, *next_re; 174df0f6b44SChao Yu 175df0f6b44SChao Yu if (!cur) 176df0f6b44SChao Yu return true; 177df0f6b44SChao Yu 178df0f6b44SChao Yu while (cur) { 179df0f6b44SChao Yu next = rb_next(cur); 180df0f6b44SChao Yu if (!next) 181df0f6b44SChao Yu return true; 182df0f6b44SChao Yu 183df0f6b44SChao Yu cur_re = rb_entry(cur, struct rb_entry, rb_node); 184df0f6b44SChao Yu next_re = rb_entry(next, struct rb_entry, rb_node); 185df0f6b44SChao Yu 186df0f6b44SChao Yu if (cur_re->ofs + cur_re->len > next_re->ofs) { 187df0f6b44SChao Yu f2fs_msg(sbi->sb, KERN_INFO, "inconsistent rbtree, " 188df0f6b44SChao Yu "cur(%u, %u) next(%u, %u)", 189df0f6b44SChao Yu cur_re->ofs, cur_re->len, 190df0f6b44SChao Yu next_re->ofs, next_re->len); 191df0f6b44SChao Yu return false; 192df0f6b44SChao Yu } 193df0f6b44SChao Yu 194df0f6b44SChao Yu cur = next; 195df0f6b44SChao Yu } 196df0f6b44SChao Yu #endif 197df0f6b44SChao Yu return true; 198df0f6b44SChao Yu } 199df0f6b44SChao Yu 200a28ef1f5SChao Yu static struct kmem_cache *extent_tree_slab; 201a28ef1f5SChao Yu static struct kmem_cache *extent_node_slab; 202a28ef1f5SChao Yu 203a28ef1f5SChao Yu static struct extent_node *__attach_extent_node(struct f2fs_sb_info *sbi, 204a28ef1f5SChao Yu struct extent_tree *et, struct extent_info *ei, 2054dada3fdSChao Yu struct rb_node *parent, struct rb_node **p, 2064dada3fdSChao Yu bool leftmost) 207a28ef1f5SChao Yu { 208a28ef1f5SChao Yu struct extent_node *en; 209a28ef1f5SChao Yu 210a28ef1f5SChao Yu en = kmem_cache_alloc(extent_node_slab, GFP_ATOMIC); 211a28ef1f5SChao Yu if (!en) 212a28ef1f5SChao Yu return NULL; 213a28ef1f5SChao Yu 214a28ef1f5SChao Yu en->ei = *ei; 215a28ef1f5SChao Yu INIT_LIST_HEAD(&en->list); 216201ef5e0SHou Pengyang en->et = et; 217a28ef1f5SChao Yu 218a28ef1f5SChao Yu rb_link_node(&en->rb_node, parent, p); 2194dada3fdSChao Yu rb_insert_color_cached(&en->rb_node, &et->root, leftmost); 22068e35385SChao Yu atomic_inc(&et->node_cnt); 221a28ef1f5SChao Yu atomic_inc(&sbi->total_ext_node); 222a28ef1f5SChao Yu return en; 223a28ef1f5SChao Yu } 224a28ef1f5SChao Yu 225a28ef1f5SChao Yu static void __detach_extent_node(struct f2fs_sb_info *sbi, 226a28ef1f5SChao Yu struct extent_tree *et, struct extent_node *en) 227a28ef1f5SChao Yu { 2284dada3fdSChao Yu rb_erase_cached(&en->rb_node, &et->root); 22968e35385SChao Yu atomic_dec(&et->node_cnt); 230a28ef1f5SChao Yu atomic_dec(&sbi->total_ext_node); 231a28ef1f5SChao Yu 232a28ef1f5SChao Yu if (et->cached_en == en) 233a28ef1f5SChao Yu et->cached_en = NULL; 234a03f01f2SHou Pengyang kmem_cache_free(extent_node_slab, en); 235a03f01f2SHou Pengyang } 236a03f01f2SHou Pengyang 237a03f01f2SHou Pengyang /* 238a03f01f2SHou Pengyang * Flow to release an extent_node: 239a03f01f2SHou Pengyang * 1. list_del_init 240a03f01f2SHou Pengyang * 2. __detach_extent_node 241a03f01f2SHou Pengyang * 3. kmem_cache_free. 242a03f01f2SHou Pengyang */ 243a03f01f2SHou Pengyang static void __release_extent_node(struct f2fs_sb_info *sbi, 244a03f01f2SHou Pengyang struct extent_tree *et, struct extent_node *en) 245a03f01f2SHou Pengyang { 246a03f01f2SHou Pengyang spin_lock(&sbi->extent_lock); 247201ef5e0SHou Pengyang f2fs_bug_on(sbi, list_empty(&en->list)); 248a03f01f2SHou Pengyang list_del_init(&en->list); 249a03f01f2SHou Pengyang spin_unlock(&sbi->extent_lock); 250a03f01f2SHou Pengyang 251a03f01f2SHou Pengyang __detach_extent_node(sbi, et, en); 252a28ef1f5SChao Yu } 253a28ef1f5SChao Yu 254a28ef1f5SChao Yu static struct extent_tree *__grab_extent_tree(struct inode *inode) 255a28ef1f5SChao Yu { 256a28ef1f5SChao Yu struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 257a28ef1f5SChao Yu struct extent_tree *et; 258a28ef1f5SChao Yu nid_t ino = inode->i_ino; 259a28ef1f5SChao Yu 2605e8256acSYunlei He mutex_lock(&sbi->extent_tree_lock); 261a28ef1f5SChao Yu et = radix_tree_lookup(&sbi->extent_tree_root, ino); 262a28ef1f5SChao Yu if (!et) { 263a28ef1f5SChao Yu et = f2fs_kmem_cache_alloc(extent_tree_slab, GFP_NOFS); 264a28ef1f5SChao Yu f2fs_radix_tree_insert(&sbi->extent_tree_root, ino, et); 265a28ef1f5SChao Yu memset(et, 0, sizeof(struct extent_tree)); 266a28ef1f5SChao Yu et->ino = ino; 2674dada3fdSChao Yu et->root = RB_ROOT_CACHED; 268a28ef1f5SChao Yu et->cached_en = NULL; 269a28ef1f5SChao Yu rwlock_init(&et->lock); 270137d09f0SJaegeuk Kim INIT_LIST_HEAD(&et->list); 27168e35385SChao Yu atomic_set(&et->node_cnt, 0); 2727441ccefSJaegeuk Kim atomic_inc(&sbi->total_ext_tree); 27374fd8d99SJaegeuk Kim } else { 27474fd8d99SJaegeuk Kim atomic_dec(&sbi->total_zombie_tree); 275137d09f0SJaegeuk Kim list_del_init(&et->list); 276a28ef1f5SChao Yu } 2775e8256acSYunlei He mutex_unlock(&sbi->extent_tree_lock); 278a28ef1f5SChao Yu 279a28ef1f5SChao Yu /* never died until evict_inode */ 280a28ef1f5SChao Yu F2FS_I(inode)->extent_tree = et; 281a28ef1f5SChao Yu 282a28ef1f5SChao Yu return et; 283a28ef1f5SChao Yu } 284a28ef1f5SChao Yu 285a6f78345SChao Yu static struct extent_node *__init_extent_tree(struct f2fs_sb_info *sbi, 286a6f78345SChao Yu struct extent_tree *et, struct extent_info *ei) 287a28ef1f5SChao Yu { 2884dada3fdSChao Yu struct rb_node **p = &et->root.rb_root.rb_node; 289a28ef1f5SChao Yu struct extent_node *en; 290a28ef1f5SChao Yu 2914dada3fdSChao Yu en = __attach_extent_node(sbi, et, ei, NULL, p, true); 292a28ef1f5SChao Yu if (!en) 293a28ef1f5SChao Yu return NULL; 294a6f78345SChao Yu 295a28ef1f5SChao Yu et->largest = en->ei; 296a28ef1f5SChao Yu et->cached_en = en; 297a28ef1f5SChao Yu return en; 298a28ef1f5SChao Yu } 299a28ef1f5SChao Yu 300a28ef1f5SChao Yu static unsigned int __free_extent_tree(struct f2fs_sb_info *sbi, 301201ef5e0SHou Pengyang struct extent_tree *et) 302a28ef1f5SChao Yu { 303a28ef1f5SChao Yu struct rb_node *node, *next; 304a28ef1f5SChao Yu struct extent_node *en; 30568e35385SChao Yu unsigned int count = atomic_read(&et->node_cnt); 306a28ef1f5SChao Yu 3074dada3fdSChao Yu node = rb_first_cached(&et->root); 308a28ef1f5SChao Yu while (node) { 309a28ef1f5SChao Yu next = rb_next(node); 310a28ef1f5SChao Yu en = rb_entry(node, struct extent_node, rb_node); 311a03f01f2SHou Pengyang __release_extent_node(sbi, et, en); 312a28ef1f5SChao Yu node = next; 313a28ef1f5SChao Yu } 314a28ef1f5SChao Yu 31568e35385SChao Yu return count - atomic_read(&et->node_cnt); 316a28ef1f5SChao Yu } 317a28ef1f5SChao Yu 318b430f726SZhikang Zhang static void __drop_largest_extent(struct extent_tree *et, 31941a099deSFan Li pgoff_t fofs, unsigned int len) 320a28ef1f5SChao Yu { 321b430f726SZhikang Zhang if (fofs < et->largest.fofs + et->largest.len && 322b430f726SZhikang Zhang fofs + len > et->largest.fofs) { 323b430f726SZhikang Zhang et->largest.len = 0; 324b430f726SZhikang Zhang et->largest_updated = true; 325205b9822SJaegeuk Kim } 326a28ef1f5SChao Yu } 327a28ef1f5SChao Yu 328ed3d1256SJaegeuk Kim /* return true, if inode page is changed */ 329dad48e73SYunlei He static bool __f2fs_init_extent_tree(struct inode *inode, struct f2fs_extent *i_ext) 330a28ef1f5SChao Yu { 331a28ef1f5SChao Yu struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 332a28ef1f5SChao Yu struct extent_tree *et; 333a28ef1f5SChao Yu struct extent_node *en; 334a28ef1f5SChao Yu struct extent_info ei; 335a28ef1f5SChao Yu 336ed3d1256SJaegeuk Kim if (!f2fs_may_extent_tree(inode)) { 337ed3d1256SJaegeuk Kim /* drop largest extent */ 338ed3d1256SJaegeuk Kim if (i_ext && i_ext->len) { 339ed3d1256SJaegeuk Kim i_ext->len = 0; 340ed3d1256SJaegeuk Kim return true; 341ed3d1256SJaegeuk Kim } 342ed3d1256SJaegeuk Kim return false; 343ed3d1256SJaegeuk Kim } 344a28ef1f5SChao Yu 345a28ef1f5SChao Yu et = __grab_extent_tree(inode); 346a28ef1f5SChao Yu 347ed3d1256SJaegeuk Kim if (!i_ext || !i_ext->len) 348ed3d1256SJaegeuk Kim return false; 349a28ef1f5SChao Yu 350bd933d4fSChao Yu get_extent_info(&ei, i_ext); 351a28ef1f5SChao Yu 352a28ef1f5SChao Yu write_lock(&et->lock); 35368e35385SChao Yu if (atomic_read(&et->node_cnt)) 354a28ef1f5SChao Yu goto out; 355a28ef1f5SChao Yu 356a6f78345SChao Yu en = __init_extent_tree(sbi, et, &ei); 357a28ef1f5SChao Yu if (en) { 358a28ef1f5SChao Yu spin_lock(&sbi->extent_lock); 359a28ef1f5SChao Yu list_add_tail(&en->list, &sbi->extent_list); 360a28ef1f5SChao Yu spin_unlock(&sbi->extent_lock); 361a28ef1f5SChao Yu } 362a28ef1f5SChao Yu out: 363a28ef1f5SChao Yu write_unlock(&et->lock); 364ed3d1256SJaegeuk Kim return false; 365a28ef1f5SChao Yu } 366a28ef1f5SChao Yu 367dad48e73SYunlei He bool f2fs_init_extent_tree(struct inode *inode, struct f2fs_extent *i_ext) 368dad48e73SYunlei He { 369dad48e73SYunlei He bool ret = __f2fs_init_extent_tree(inode, i_ext); 370dad48e73SYunlei He 371dad48e73SYunlei He if (!F2FS_I(inode)->extent_tree) 372dad48e73SYunlei He set_inode_flag(inode, FI_NO_EXTENT); 373dad48e73SYunlei He 374dad48e73SYunlei He return ret; 375dad48e73SYunlei He } 376dad48e73SYunlei He 377a28ef1f5SChao Yu static bool f2fs_lookup_extent_tree(struct inode *inode, pgoff_t pgofs, 378a28ef1f5SChao Yu struct extent_info *ei) 379a28ef1f5SChao Yu { 380a28ef1f5SChao Yu struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 381a28ef1f5SChao Yu struct extent_tree *et = F2FS_I(inode)->extent_tree; 382a28ef1f5SChao Yu struct extent_node *en; 383a28ef1f5SChao Yu bool ret = false; 384a28ef1f5SChao Yu 385a28ef1f5SChao Yu f2fs_bug_on(sbi, !et); 386a28ef1f5SChao Yu 387a28ef1f5SChao Yu trace_f2fs_lookup_extent_tree_start(inode, pgofs); 388a28ef1f5SChao Yu 389a28ef1f5SChao Yu read_lock(&et->lock); 390a28ef1f5SChao Yu 391a28ef1f5SChao Yu if (et->largest.fofs <= pgofs && 392a28ef1f5SChao Yu et->largest.fofs + et->largest.len > pgofs) { 393a28ef1f5SChao Yu *ei = et->largest; 394a28ef1f5SChao Yu ret = true; 39591c481ffSChao Yu stat_inc_largest_node_hit(sbi); 396a28ef1f5SChao Yu goto out; 397a28ef1f5SChao Yu } 398a28ef1f5SChao Yu 3994d57b86dSChao Yu en = (struct extent_node *)f2fs_lookup_rb_tree(&et->root, 40054c2258cSChao Yu (struct rb_entry *)et->cached_en, pgofs); 40154c2258cSChao Yu if (!en) 40254c2258cSChao Yu goto out; 40354c2258cSChao Yu 40454c2258cSChao Yu if (en == et->cached_en) 40554c2258cSChao Yu stat_inc_cached_node_hit(sbi); 40654c2258cSChao Yu else 40754c2258cSChao Yu stat_inc_rbtree_node_hit(sbi); 40854c2258cSChao Yu 409a28ef1f5SChao Yu *ei = en->ei; 410a28ef1f5SChao Yu spin_lock(&sbi->extent_lock); 41142926744SJaegeuk Kim if (!list_empty(&en->list)) { 412a28ef1f5SChao Yu list_move_tail(&en->list, &sbi->extent_list); 413a28ef1f5SChao Yu et->cached_en = en; 41442926744SJaegeuk Kim } 415a28ef1f5SChao Yu spin_unlock(&sbi->extent_lock); 416a28ef1f5SChao Yu ret = true; 417a28ef1f5SChao Yu out: 418727edac5SChao Yu stat_inc_total_hit(sbi); 419a28ef1f5SChao Yu read_unlock(&et->lock); 420a28ef1f5SChao Yu 421a28ef1f5SChao Yu trace_f2fs_lookup_extent_tree_end(inode, pgofs, ei); 422a28ef1f5SChao Yu return ret; 423a28ef1f5SChao Yu } 424a28ef1f5SChao Yu 425b430f726SZhikang Zhang static struct extent_node *__try_merge_extent_node(struct f2fs_sb_info *sbi, 4260f825ee6SFan Li struct extent_tree *et, struct extent_info *ei, 4270f825ee6SFan Li struct extent_node *prev_ex, 428ef05e221SChao Yu struct extent_node *next_ex) 4290f825ee6SFan Li { 4300f825ee6SFan Li struct extent_node *en = NULL; 4310f825ee6SFan Li 4320f825ee6SFan Li if (prev_ex && __is_back_mergeable(ei, &prev_ex->ei)) { 4330f825ee6SFan Li prev_ex->ei.len += ei->len; 4340f825ee6SFan Li ei = &prev_ex->ei; 4350f825ee6SFan Li en = prev_ex; 4360f825ee6SFan Li } 437ef05e221SChao Yu 4380f825ee6SFan Li if (next_ex && __is_front_mergeable(ei, &next_ex->ei)) { 4390f825ee6SFan Li next_ex->ei.fofs = ei->fofs; 4400f825ee6SFan Li next_ex->ei.blk = ei->blk; 4410f825ee6SFan Li next_ex->ei.len += ei->len; 4427855eba4SYunlei He if (en) 4437855eba4SYunlei He __release_extent_node(sbi, et, prev_ex); 4447855eba4SYunlei He 4450f825ee6SFan Li en = next_ex; 4460f825ee6SFan Li } 447ef05e221SChao Yu 44843a2fa18SJaegeuk Kim if (!en) 44943a2fa18SJaegeuk Kim return NULL; 45043a2fa18SJaegeuk Kim 451b430f726SZhikang Zhang __try_update_largest_extent(et, en); 45243a2fa18SJaegeuk Kim 45343a2fa18SJaegeuk Kim spin_lock(&sbi->extent_lock); 45442926744SJaegeuk Kim if (!list_empty(&en->list)) { 45543a2fa18SJaegeuk Kim list_move_tail(&en->list, &sbi->extent_list); 45642926744SJaegeuk Kim et->cached_en = en; 45742926744SJaegeuk Kim } 45843a2fa18SJaegeuk Kim spin_unlock(&sbi->extent_lock); 459ef05e221SChao Yu return en; 460ef05e221SChao Yu } 461ef05e221SChao Yu 462b430f726SZhikang Zhang static struct extent_node *__insert_extent_tree(struct f2fs_sb_info *sbi, 463ef05e221SChao Yu struct extent_tree *et, struct extent_info *ei, 464ef05e221SChao Yu struct rb_node **insert_p, 4654dada3fdSChao Yu struct rb_node *insert_parent, 4664dada3fdSChao Yu bool leftmost) 467ef05e221SChao Yu { 4688fe326cbSColin Ian King struct rb_node **p; 469ef05e221SChao Yu struct rb_node *parent = NULL; 470ef05e221SChao Yu struct extent_node *en = NULL; 4710f825ee6SFan Li 4720f825ee6SFan Li if (insert_p && insert_parent) { 4730f825ee6SFan Li parent = insert_parent; 4740f825ee6SFan Li p = insert_p; 4750f825ee6SFan Li goto do_insert; 4760f825ee6SFan Li } 4770f825ee6SFan Li 4784dada3fdSChao Yu leftmost = true; 4794dada3fdSChao Yu 4804dada3fdSChao Yu p = f2fs_lookup_rb_tree_for_insert(sbi, &et->root, &parent, 4814dada3fdSChao Yu ei->fofs, &leftmost); 4820f825ee6SFan Li do_insert: 4834dada3fdSChao Yu en = __attach_extent_node(sbi, et, ei, parent, p, leftmost); 4840f825ee6SFan Li if (!en) 4850f825ee6SFan Li return NULL; 486ef05e221SChao Yu 487b430f726SZhikang Zhang __try_update_largest_extent(et, en); 48843a2fa18SJaegeuk Kim 48943a2fa18SJaegeuk Kim /* update in global extent list */ 49043a2fa18SJaegeuk Kim spin_lock(&sbi->extent_lock); 49143a2fa18SJaegeuk Kim list_add_tail(&en->list, &sbi->extent_list); 49242926744SJaegeuk Kim et->cached_en = en; 49343a2fa18SJaegeuk Kim spin_unlock(&sbi->extent_lock); 4940f825ee6SFan Li return en; 4950f825ee6SFan Li } 4960f825ee6SFan Li 497317e1300SChao Yu static void f2fs_update_extent_tree_range(struct inode *inode, 49819b2c30dSChao Yu pgoff_t fofs, block_t blkaddr, unsigned int len) 499a28ef1f5SChao Yu { 500a28ef1f5SChao Yu struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 501a28ef1f5SChao Yu struct extent_tree *et = F2FS_I(inode)->extent_tree; 5024d1fa815SFan Li struct extent_node *en = NULL, *en1 = NULL; 50319b2c30dSChao Yu struct extent_node *prev_en = NULL, *next_en = NULL; 504a28ef1f5SChao Yu struct extent_info ei, dei, prev; 5050f825ee6SFan Li struct rb_node **insert_p = NULL, *insert_parent = NULL; 50619b2c30dSChao Yu unsigned int end = fofs + len; 50719b2c30dSChao Yu unsigned int pos = (unsigned int)fofs; 508b430f726SZhikang Zhang bool updated = false; 509*f9aa52a8SChao Yu bool leftmost = false; 510a28ef1f5SChao Yu 511a28ef1f5SChao Yu if (!et) 512317e1300SChao Yu return; 513a28ef1f5SChao Yu 514744288c7SChao Yu trace_f2fs_update_extent_tree_range(inode, fofs, blkaddr, len); 515744288c7SChao Yu 516a28ef1f5SChao Yu write_lock(&et->lock); 517a28ef1f5SChao Yu 51891942321SJaegeuk Kim if (is_inode_flag_set(inode, FI_NO_EXTENT)) { 519a28ef1f5SChao Yu write_unlock(&et->lock); 520317e1300SChao Yu return; 521a28ef1f5SChao Yu } 522a28ef1f5SChao Yu 523a28ef1f5SChao Yu prev = et->largest; 524a28ef1f5SChao Yu dei.len = 0; 525a28ef1f5SChao Yu 5264d1fa815SFan Li /* 5274d1fa815SFan Li * drop largest extent before lookup, in case it's already 5284d1fa815SFan Li * been shrunk from extent tree 5294d1fa815SFan Li */ 530b430f726SZhikang Zhang __drop_largest_extent(et, fofs, len); 531a28ef1f5SChao Yu 53219b2c30dSChao Yu /* 1. lookup first extent node in range [fofs, fofs + len - 1] */ 5334d57b86dSChao Yu en = (struct extent_node *)f2fs_lookup_rb_tree_ret(&et->root, 53454c2258cSChao Yu (struct rb_entry *)et->cached_en, fofs, 53554c2258cSChao Yu (struct rb_entry **)&prev_en, 53654c2258cSChao Yu (struct rb_entry **)&next_en, 5374dada3fdSChao Yu &insert_p, &insert_parent, false, 5384dada3fdSChao Yu &leftmost); 5394d1fa815SFan Li if (!en) 54019b2c30dSChao Yu en = next_en; 54119b2c30dSChao Yu 54219b2c30dSChao Yu /* 2. invlidate all extent nodes in range [fofs, fofs + len - 1] */ 5434d1fa815SFan Li while (en && en->ei.fofs < end) { 5444d1fa815SFan Li unsigned int org_end; 5454d1fa815SFan Li int parts = 0; /* # of parts current extent split into */ 54619b2c30dSChao Yu 5474d1fa815SFan Li next_en = en1 = NULL; 548a28ef1f5SChao Yu 549a28ef1f5SChao Yu dei = en->ei; 5504d1fa815SFan Li org_end = dei.fofs + dei.len; 5514d1fa815SFan Li f2fs_bug_on(sbi, pos >= org_end); 55219b2c30dSChao Yu 5534d1fa815SFan Li if (pos > dei.fofs && pos - dei.fofs >= F2FS_MIN_EXTENT_LEN) { 5544d1fa815SFan Li en->ei.len = pos - en->ei.fofs; 5554d1fa815SFan Li prev_en = en; 5564d1fa815SFan Li parts = 1; 55719b2c30dSChao Yu } 55819b2c30dSChao Yu 5594d1fa815SFan Li if (end < org_end && org_end - end >= F2FS_MIN_EXTENT_LEN) { 5604d1fa815SFan Li if (parts) { 5614d1fa815SFan Li set_extent_info(&ei, end, 5624d1fa815SFan Li end - dei.fofs + dei.blk, 5634d1fa815SFan Li org_end - end); 564b430f726SZhikang Zhang en1 = __insert_extent_tree(sbi, et, &ei, 5654dada3fdSChao Yu NULL, NULL, true); 5664d1fa815SFan Li next_en = en1; 5674d1fa815SFan Li } else { 56819b2c30dSChao Yu en->ei.fofs = end; 56919b2c30dSChao Yu en->ei.blk += end - dei.fofs; 57019b2c30dSChao Yu en->ei.len -= end - dei.fofs; 5714d1fa815SFan Li next_en = en; 5724d1fa815SFan Li } 5734d1fa815SFan Li parts++; 57419b2c30dSChao Yu } 57519b2c30dSChao Yu 5764d1fa815SFan Li if (!next_en) { 5774d1fa815SFan Li struct rb_node *node = rb_next(&en->rb_node); 5784d1fa815SFan Li 579ed0b5620SGeliang Tang next_en = rb_entry_safe(node, struct extent_node, 580ed0b5620SGeliang Tang rb_node); 5814d1fa815SFan Li } 5824d1fa815SFan Li 5834abd3f5aSChao Yu if (parts) 584b430f726SZhikang Zhang __try_update_largest_extent(et, en); 5854abd3f5aSChao Yu else 586a03f01f2SHou Pengyang __release_extent_node(sbi, et, en); 58719b2c30dSChao Yu 58819b2c30dSChao Yu /* 5894d1fa815SFan Li * if original extent is split into zero or two parts, extent 5904d1fa815SFan Li * tree has been altered by deletion or insertion, therefore 5914d1fa815SFan Li * invalidate pointers regard to tree. 59219b2c30dSChao Yu */ 5934d1fa815SFan Li if (parts != 1) { 59419b2c30dSChao Yu insert_p = NULL; 59519b2c30dSChao Yu insert_parent = NULL; 59619b2c30dSChao Yu } 5974d1fa815SFan Li en = next_en; 59819b2c30dSChao Yu } 599a28ef1f5SChao Yu 600a28ef1f5SChao Yu /* 3. update extent in extent cache */ 601a28ef1f5SChao Yu if (blkaddr) { 60219b2c30dSChao Yu 60319b2c30dSChao Yu set_extent_info(&ei, fofs, blkaddr, len); 604b430f726SZhikang Zhang if (!__try_merge_extent_node(sbi, et, &ei, prev_en, next_en)) 605b430f726SZhikang Zhang __insert_extent_tree(sbi, et, &ei, 6064dada3fdSChao Yu insert_p, insert_parent, leftmost); 607a28ef1f5SChao Yu 608a28ef1f5SChao Yu /* give up extent_cache, if split and small updates happen */ 609a28ef1f5SChao Yu if (dei.len >= 1 && 610a28ef1f5SChao Yu prev.len < F2FS_MIN_EXTENT_LEN && 611a28ef1f5SChao Yu et->largest.len < F2FS_MIN_EXTENT_LEN) { 612b430f726SZhikang Zhang et->largest.len = 0; 613b430f726SZhikang Zhang et->largest_updated = true; 61491942321SJaegeuk Kim set_inode_flag(inode, FI_NO_EXTENT); 615a28ef1f5SChao Yu } 61619b2c30dSChao Yu } 617a28ef1f5SChao Yu 61891942321SJaegeuk Kim if (is_inode_flag_set(inode, FI_NO_EXTENT)) 619201ef5e0SHou Pengyang __free_extent_tree(sbi, et); 620a28ef1f5SChao Yu 621b430f726SZhikang Zhang if (et->largest_updated) { 622b430f726SZhikang Zhang et->largest_updated = false; 623b430f726SZhikang Zhang updated = true; 624b430f726SZhikang Zhang } 625b430f726SZhikang Zhang 626a28ef1f5SChao Yu write_unlock(&et->lock); 627b430f726SZhikang Zhang 628b430f726SZhikang Zhang if (updated) 629b430f726SZhikang Zhang f2fs_mark_inode_dirty_sync(inode, true); 630a28ef1f5SChao Yu } 631a28ef1f5SChao Yu 632a28ef1f5SChao Yu unsigned int f2fs_shrink_extent_tree(struct f2fs_sb_info *sbi, int nr_shrink) 633a28ef1f5SChao Yu { 634137d09f0SJaegeuk Kim struct extent_tree *et, *next; 635201ef5e0SHou Pengyang struct extent_node *en; 636a28ef1f5SChao Yu unsigned int node_cnt = 0, tree_cnt = 0; 637a28ef1f5SChao Yu int remained; 638a28ef1f5SChao Yu 639a28ef1f5SChao Yu if (!test_opt(sbi, EXTENT_CACHE)) 640a28ef1f5SChao Yu return 0; 641a28ef1f5SChao Yu 64274fd8d99SJaegeuk Kim if (!atomic_read(&sbi->total_zombie_tree)) 64374fd8d99SJaegeuk Kim goto free_node; 64474fd8d99SJaegeuk Kim 6455e8256acSYunlei He if (!mutex_trylock(&sbi->extent_tree_lock)) 646a28ef1f5SChao Yu goto out; 647a28ef1f5SChao Yu 648a28ef1f5SChao Yu /* 1. remove unreferenced extent tree */ 649137d09f0SJaegeuk Kim list_for_each_entry_safe(et, next, &sbi->zombie_list, list) { 6509b72a388SChao Yu if (atomic_read(&et->node_cnt)) { 651a28ef1f5SChao Yu write_lock(&et->lock); 652201ef5e0SHou Pengyang node_cnt += __free_extent_tree(sbi, et); 653a28ef1f5SChao Yu write_unlock(&et->lock); 6549b72a388SChao Yu } 655201ef5e0SHou Pengyang f2fs_bug_on(sbi, atomic_read(&et->node_cnt)); 656137d09f0SJaegeuk Kim list_del_init(&et->list); 657137d09f0SJaegeuk Kim radix_tree_delete(&sbi->extent_tree_root, et->ino); 658a28ef1f5SChao Yu kmem_cache_free(extent_tree_slab, et); 6597441ccefSJaegeuk Kim atomic_dec(&sbi->total_ext_tree); 66074fd8d99SJaegeuk Kim atomic_dec(&sbi->total_zombie_tree); 661a28ef1f5SChao Yu tree_cnt++; 662a28ef1f5SChao Yu 663a28ef1f5SChao Yu if (node_cnt + tree_cnt >= nr_shrink) 664a28ef1f5SChao Yu goto unlock_out; 6656fe2bc95SJaegeuk Kim cond_resched(); 666a28ef1f5SChao Yu } 6675e8256acSYunlei He mutex_unlock(&sbi->extent_tree_lock); 668a28ef1f5SChao Yu 66974fd8d99SJaegeuk Kim free_node: 670a28ef1f5SChao Yu /* 2. remove LRU extent entries */ 6715e8256acSYunlei He if (!mutex_trylock(&sbi->extent_tree_lock)) 672a28ef1f5SChao Yu goto out; 673a28ef1f5SChao Yu 674a28ef1f5SChao Yu remained = nr_shrink - (node_cnt + tree_cnt); 675a28ef1f5SChao Yu 676a28ef1f5SChao Yu spin_lock(&sbi->extent_lock); 677201ef5e0SHou Pengyang for (; remained > 0; remained--) { 678201ef5e0SHou Pengyang if (list_empty(&sbi->extent_list)) 679a28ef1f5SChao Yu break; 680201ef5e0SHou Pengyang en = list_first_entry(&sbi->extent_list, 681201ef5e0SHou Pengyang struct extent_node, list); 682201ef5e0SHou Pengyang et = en->et; 683201ef5e0SHou Pengyang if (!write_trylock(&et->lock)) { 684201ef5e0SHou Pengyang /* refresh this extent node's position in extent list */ 685201ef5e0SHou Pengyang list_move_tail(&en->list, &sbi->extent_list); 686201ef5e0SHou Pengyang continue; 687201ef5e0SHou Pengyang } 688201ef5e0SHou Pengyang 689a28ef1f5SChao Yu list_del_init(&en->list); 690201ef5e0SHou Pengyang spin_unlock(&sbi->extent_lock); 691201ef5e0SHou Pengyang 692201ef5e0SHou Pengyang __detach_extent_node(sbi, et, en); 693201ef5e0SHou Pengyang 694201ef5e0SHou Pengyang write_unlock(&et->lock); 695201ef5e0SHou Pengyang node_cnt++; 696201ef5e0SHou Pengyang spin_lock(&sbi->extent_lock); 697a28ef1f5SChao Yu } 698a28ef1f5SChao Yu spin_unlock(&sbi->extent_lock); 699a28ef1f5SChao Yu 700a28ef1f5SChao Yu unlock_out: 7015e8256acSYunlei He mutex_unlock(&sbi->extent_tree_lock); 702a28ef1f5SChao Yu out: 703a28ef1f5SChao Yu trace_f2fs_shrink_extent_tree(sbi, node_cnt, tree_cnt); 704a28ef1f5SChao Yu 705a28ef1f5SChao Yu return node_cnt + tree_cnt; 706a28ef1f5SChao Yu } 707a28ef1f5SChao Yu 708a28ef1f5SChao Yu unsigned int f2fs_destroy_extent_node(struct inode *inode) 709a28ef1f5SChao Yu { 710a28ef1f5SChao Yu struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 711a28ef1f5SChao Yu struct extent_tree *et = F2FS_I(inode)->extent_tree; 712a28ef1f5SChao Yu unsigned int node_cnt = 0; 713a28ef1f5SChao Yu 7149b72a388SChao Yu if (!et || !atomic_read(&et->node_cnt)) 715a28ef1f5SChao Yu return 0; 716a28ef1f5SChao Yu 717a28ef1f5SChao Yu write_lock(&et->lock); 718201ef5e0SHou Pengyang node_cnt = __free_extent_tree(sbi, et); 719a28ef1f5SChao Yu write_unlock(&et->lock); 720a28ef1f5SChao Yu 721a28ef1f5SChao Yu return node_cnt; 722a28ef1f5SChao Yu } 723a28ef1f5SChao Yu 7245f281fabSJaegeuk Kim void f2fs_drop_extent_tree(struct inode *inode) 7255f281fabSJaegeuk Kim { 7265f281fabSJaegeuk Kim struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 7275f281fabSJaegeuk Kim struct extent_tree *et = F2FS_I(inode)->extent_tree; 728b430f726SZhikang Zhang bool updated = false; 7295f281fabSJaegeuk Kim 730bf617f7aSChao Yu if (!f2fs_may_extent_tree(inode)) 731bf617f7aSChao Yu return; 732bf617f7aSChao Yu 7335f281fabSJaegeuk Kim set_inode_flag(inode, FI_NO_EXTENT); 7345f281fabSJaegeuk Kim 7355f281fabSJaegeuk Kim write_lock(&et->lock); 7365f281fabSJaegeuk Kim __free_extent_tree(sbi, et); 737b430f726SZhikang Zhang if (et->largest.len) { 738b430f726SZhikang Zhang et->largest.len = 0; 739b430f726SZhikang Zhang updated = true; 740b430f726SZhikang Zhang } 7415f281fabSJaegeuk Kim write_unlock(&et->lock); 742b430f726SZhikang Zhang if (updated) 743b430f726SZhikang Zhang f2fs_mark_inode_dirty_sync(inode, true); 7445f281fabSJaegeuk Kim } 7455f281fabSJaegeuk Kim 746a28ef1f5SChao Yu void f2fs_destroy_extent_tree(struct inode *inode) 747a28ef1f5SChao Yu { 748a28ef1f5SChao Yu struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 749a28ef1f5SChao Yu struct extent_tree *et = F2FS_I(inode)->extent_tree; 750a28ef1f5SChao Yu unsigned int node_cnt = 0; 751a28ef1f5SChao Yu 752a28ef1f5SChao Yu if (!et) 753a28ef1f5SChao Yu return; 754a28ef1f5SChao Yu 75568e35385SChao Yu if (inode->i_nlink && !is_bad_inode(inode) && 75668e35385SChao Yu atomic_read(&et->node_cnt)) { 7575e8256acSYunlei He mutex_lock(&sbi->extent_tree_lock); 758137d09f0SJaegeuk Kim list_add_tail(&et->list, &sbi->zombie_list); 75974fd8d99SJaegeuk Kim atomic_inc(&sbi->total_zombie_tree); 7605e8256acSYunlei He mutex_unlock(&sbi->extent_tree_lock); 761a28ef1f5SChao Yu return; 762a28ef1f5SChao Yu } 763a28ef1f5SChao Yu 764a28ef1f5SChao Yu /* free all extent info belong to this extent tree */ 765a28ef1f5SChao Yu node_cnt = f2fs_destroy_extent_node(inode); 766a28ef1f5SChao Yu 767a28ef1f5SChao Yu /* delete extent tree entry in radix tree */ 7685e8256acSYunlei He mutex_lock(&sbi->extent_tree_lock); 76968e35385SChao Yu f2fs_bug_on(sbi, atomic_read(&et->node_cnt)); 770a28ef1f5SChao Yu radix_tree_delete(&sbi->extent_tree_root, inode->i_ino); 771a28ef1f5SChao Yu kmem_cache_free(extent_tree_slab, et); 7727441ccefSJaegeuk Kim atomic_dec(&sbi->total_ext_tree); 7735e8256acSYunlei He mutex_unlock(&sbi->extent_tree_lock); 774a28ef1f5SChao Yu 775a28ef1f5SChao Yu F2FS_I(inode)->extent_tree = NULL; 776a28ef1f5SChao Yu 777a28ef1f5SChao Yu trace_f2fs_destroy_extent_tree(inode, node_cnt); 778a28ef1f5SChao Yu } 779a28ef1f5SChao Yu 780a28ef1f5SChao Yu bool f2fs_lookup_extent_cache(struct inode *inode, pgoff_t pgofs, 781a28ef1f5SChao Yu struct extent_info *ei) 782a28ef1f5SChao Yu { 783a28ef1f5SChao Yu if (!f2fs_may_extent_tree(inode)) 784a28ef1f5SChao Yu return false; 785a28ef1f5SChao Yu 786a28ef1f5SChao Yu return f2fs_lookup_extent_tree(inode, pgofs, ei); 787a28ef1f5SChao Yu } 788a28ef1f5SChao Yu 789a28ef1f5SChao Yu void f2fs_update_extent_cache(struct dnode_of_data *dn) 790a28ef1f5SChao Yu { 791a28ef1f5SChao Yu pgoff_t fofs; 792f28b3434SChao Yu block_t blkaddr; 793a28ef1f5SChao Yu 794a28ef1f5SChao Yu if (!f2fs_may_extent_tree(dn->inode)) 795a28ef1f5SChao Yu return; 796a28ef1f5SChao Yu 797f28b3434SChao Yu if (dn->data_blkaddr == NEW_ADDR) 798f28b3434SChao Yu blkaddr = NULL_ADDR; 799f28b3434SChao Yu else 800f28b3434SChao Yu blkaddr = dn->data_blkaddr; 80119b2c30dSChao Yu 8024d57b86dSChao Yu fofs = f2fs_start_bidx_of_node(ofs_of_node(dn->node_page), dn->inode) + 803a28ef1f5SChao Yu dn->ofs_in_node; 804ee6d182fSJaegeuk Kim f2fs_update_extent_tree_range(dn->inode, fofs, blkaddr, 1); 80519b2c30dSChao Yu } 80619b2c30dSChao Yu 80719b2c30dSChao Yu void f2fs_update_extent_cache_range(struct dnode_of_data *dn, 80819b2c30dSChao Yu pgoff_t fofs, block_t blkaddr, unsigned int len) 80919b2c30dSChao Yu 81019b2c30dSChao Yu { 81119b2c30dSChao Yu if (!f2fs_may_extent_tree(dn->inode)) 81219b2c30dSChao Yu return; 81319b2c30dSChao Yu 814ee6d182fSJaegeuk Kim f2fs_update_extent_tree_range(dn->inode, fofs, blkaddr, len); 815a28ef1f5SChao Yu } 816a28ef1f5SChao Yu 8174d57b86dSChao Yu void f2fs_init_extent_cache_info(struct f2fs_sb_info *sbi) 818a28ef1f5SChao Yu { 819a28ef1f5SChao Yu INIT_RADIX_TREE(&sbi->extent_tree_root, GFP_NOIO); 8205e8256acSYunlei He mutex_init(&sbi->extent_tree_lock); 821a28ef1f5SChao Yu INIT_LIST_HEAD(&sbi->extent_list); 822a28ef1f5SChao Yu spin_lock_init(&sbi->extent_lock); 8237441ccefSJaegeuk Kim atomic_set(&sbi->total_ext_tree, 0); 824137d09f0SJaegeuk Kim INIT_LIST_HEAD(&sbi->zombie_list); 82574fd8d99SJaegeuk Kim atomic_set(&sbi->total_zombie_tree, 0); 826a28ef1f5SChao Yu atomic_set(&sbi->total_ext_node, 0); 827a28ef1f5SChao Yu } 828a28ef1f5SChao Yu 8294d57b86dSChao Yu int __init f2fs_create_extent_cache(void) 830a28ef1f5SChao Yu { 831a28ef1f5SChao Yu extent_tree_slab = f2fs_kmem_cache_create("f2fs_extent_tree", 832a28ef1f5SChao Yu sizeof(struct extent_tree)); 833a28ef1f5SChao Yu if (!extent_tree_slab) 834a28ef1f5SChao Yu return -ENOMEM; 835a28ef1f5SChao Yu extent_node_slab = f2fs_kmem_cache_create("f2fs_extent_node", 836a28ef1f5SChao Yu sizeof(struct extent_node)); 837a28ef1f5SChao Yu if (!extent_node_slab) { 838a28ef1f5SChao Yu kmem_cache_destroy(extent_tree_slab); 839a28ef1f5SChao Yu return -ENOMEM; 840a28ef1f5SChao Yu } 841a28ef1f5SChao Yu return 0; 842a28ef1f5SChao Yu } 843a28ef1f5SChao Yu 8444d57b86dSChao Yu void f2fs_destroy_extent_cache(void) 845a28ef1f5SChao Yu { 846a28ef1f5SChao Yu kmem_cache_destroy(extent_node_slab); 847a28ef1f5SChao Yu kmem_cache_destroy(extent_tree_slab); 848a28ef1f5SChao Yu } 849