116cdcec7SMiao Xie /* 216cdcec7SMiao Xie * Copyright (C) 2011 Fujitsu. All rights reserved. 316cdcec7SMiao Xie * Written by Miao Xie <miaox@cn.fujitsu.com> 416cdcec7SMiao Xie * 516cdcec7SMiao Xie * This program is free software; you can redistribute it and/or 616cdcec7SMiao Xie * modify it under the terms of the GNU General Public 716cdcec7SMiao Xie * License v2 as published by the Free Software Foundation. 816cdcec7SMiao Xie * 916cdcec7SMiao Xie * This program is distributed in the hope that it will be useful, 1016cdcec7SMiao Xie * but WITHOUT ANY WARRANTY; without even the implied warranty of 1116cdcec7SMiao Xie * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 1216cdcec7SMiao Xie * General Public License for more details. 1316cdcec7SMiao Xie * 1416cdcec7SMiao Xie * You should have received a copy of the GNU General Public 1516cdcec7SMiao Xie * License along with this program; if not, write to the 1616cdcec7SMiao Xie * Free Software Foundation, Inc., 59 Temple Place - Suite 330, 1716cdcec7SMiao Xie * Boston, MA 021110-1307, USA. 1816cdcec7SMiao Xie */ 1916cdcec7SMiao Xie 2016cdcec7SMiao Xie #include <linux/slab.h> 2116cdcec7SMiao Xie #include "delayed-inode.h" 2216cdcec7SMiao Xie #include "disk-io.h" 2316cdcec7SMiao Xie #include "transaction.h" 243cae210fSQu Wenruo #include "ctree.h" 2516cdcec7SMiao Xie 26de3cb945SChris Mason #define BTRFS_DELAYED_WRITEBACK 512 27de3cb945SChris Mason #define BTRFS_DELAYED_BACKGROUND 128 28de3cb945SChris Mason #define BTRFS_DELAYED_BATCH 16 2916cdcec7SMiao Xie 3016cdcec7SMiao Xie static struct kmem_cache *delayed_node_cache; 3116cdcec7SMiao Xie 3216cdcec7SMiao Xie int __init btrfs_delayed_inode_init(void) 3316cdcec7SMiao Xie { 34837e1972SDavid Sterba delayed_node_cache = kmem_cache_create("btrfs_delayed_node", 3516cdcec7SMiao Xie sizeof(struct btrfs_delayed_node), 3616cdcec7SMiao Xie 0, 37fba4b697SNikolay Borisov SLAB_MEM_SPREAD, 3816cdcec7SMiao Xie NULL); 3916cdcec7SMiao Xie if (!delayed_node_cache) 4016cdcec7SMiao Xie return -ENOMEM; 4116cdcec7SMiao Xie return 0; 4216cdcec7SMiao Xie } 4316cdcec7SMiao Xie 4416cdcec7SMiao Xie void btrfs_delayed_inode_exit(void) 4516cdcec7SMiao Xie { 4616cdcec7SMiao Xie kmem_cache_destroy(delayed_node_cache); 4716cdcec7SMiao Xie } 4816cdcec7SMiao Xie 4916cdcec7SMiao Xie static inline void btrfs_init_delayed_node( 5016cdcec7SMiao Xie struct btrfs_delayed_node *delayed_node, 5116cdcec7SMiao Xie struct btrfs_root *root, u64 inode_id) 5216cdcec7SMiao Xie { 5316cdcec7SMiao Xie delayed_node->root = root; 5416cdcec7SMiao Xie delayed_node->inode_id = inode_id; 5516cdcec7SMiao Xie atomic_set(&delayed_node->refs, 0); 5616cdcec7SMiao Xie delayed_node->ins_root = RB_ROOT; 5716cdcec7SMiao Xie delayed_node->del_root = RB_ROOT; 5816cdcec7SMiao Xie mutex_init(&delayed_node->mutex); 5916cdcec7SMiao Xie INIT_LIST_HEAD(&delayed_node->n_list); 6016cdcec7SMiao Xie INIT_LIST_HEAD(&delayed_node->p_list); 6116cdcec7SMiao Xie } 6216cdcec7SMiao Xie 6316cdcec7SMiao Xie static inline int btrfs_is_continuous_delayed_item( 6416cdcec7SMiao Xie struct btrfs_delayed_item *item1, 6516cdcec7SMiao Xie struct btrfs_delayed_item *item2) 6616cdcec7SMiao Xie { 6716cdcec7SMiao Xie if (item1->key.type == BTRFS_DIR_INDEX_KEY && 6816cdcec7SMiao Xie item1->key.objectid == item2->key.objectid && 6916cdcec7SMiao Xie item1->key.type == item2->key.type && 7016cdcec7SMiao Xie item1->key.offset + 1 == item2->key.offset) 7116cdcec7SMiao Xie return 1; 7216cdcec7SMiao Xie return 0; 7316cdcec7SMiao Xie } 7416cdcec7SMiao Xie 752f7e33d4SMiao Xie static struct btrfs_delayed_node *btrfs_get_delayed_node(struct inode *inode) 762f7e33d4SMiao Xie { 772f7e33d4SMiao Xie struct btrfs_inode *btrfs_inode = BTRFS_I(inode); 782f7e33d4SMiao Xie struct btrfs_root *root = btrfs_inode->root; 792f7e33d4SMiao Xie u64 ino = btrfs_ino(inode); 802f7e33d4SMiao Xie struct btrfs_delayed_node *node; 812f7e33d4SMiao Xie 822f7e33d4SMiao Xie node = ACCESS_ONCE(btrfs_inode->delayed_node); 832f7e33d4SMiao Xie if (node) { 842f7e33d4SMiao Xie atomic_inc(&node->refs); 852f7e33d4SMiao Xie return node; 862f7e33d4SMiao Xie } 872f7e33d4SMiao Xie 882f7e33d4SMiao Xie spin_lock(&root->inode_lock); 892f7e33d4SMiao Xie node = radix_tree_lookup(&root->delayed_nodes_tree, ino); 902f7e33d4SMiao Xie if (node) { 912f7e33d4SMiao Xie if (btrfs_inode->delayed_node) { 922f7e33d4SMiao Xie atomic_inc(&node->refs); /* can be accessed */ 932f7e33d4SMiao Xie BUG_ON(btrfs_inode->delayed_node != node); 942f7e33d4SMiao Xie spin_unlock(&root->inode_lock); 952f7e33d4SMiao Xie return node; 962f7e33d4SMiao Xie } 972f7e33d4SMiao Xie btrfs_inode->delayed_node = node; 9895e94d14SRashika /* can be accessed and cached in the inode */ 9995e94d14SRashika atomic_add(2, &node->refs); 1002f7e33d4SMiao Xie spin_unlock(&root->inode_lock); 1012f7e33d4SMiao Xie return node; 1022f7e33d4SMiao Xie } 1032f7e33d4SMiao Xie spin_unlock(&root->inode_lock); 1042f7e33d4SMiao Xie 1052f7e33d4SMiao Xie return NULL; 1062f7e33d4SMiao Xie } 1072f7e33d4SMiao Xie 10879787eaaSJeff Mahoney /* Will return either the node or PTR_ERR(-ENOMEM) */ 10916cdcec7SMiao Xie static struct btrfs_delayed_node *btrfs_get_or_create_delayed_node( 11016cdcec7SMiao Xie struct inode *inode) 11116cdcec7SMiao Xie { 11216cdcec7SMiao Xie struct btrfs_delayed_node *node; 11316cdcec7SMiao Xie struct btrfs_inode *btrfs_inode = BTRFS_I(inode); 11416cdcec7SMiao Xie struct btrfs_root *root = btrfs_inode->root; 1150d0ca30fSChris Mason u64 ino = btrfs_ino(inode); 11616cdcec7SMiao Xie int ret; 11716cdcec7SMiao Xie 11816cdcec7SMiao Xie again: 1192f7e33d4SMiao Xie node = btrfs_get_delayed_node(inode); 1202f7e33d4SMiao Xie if (node) 12116cdcec7SMiao Xie return node; 12216cdcec7SMiao Xie 123352dd9c8SAlexandru Moise node = kmem_cache_zalloc(delayed_node_cache, GFP_NOFS); 12416cdcec7SMiao Xie if (!node) 12516cdcec7SMiao Xie return ERR_PTR(-ENOMEM); 1260d0ca30fSChris Mason btrfs_init_delayed_node(node, root, ino); 12716cdcec7SMiao Xie 12895e94d14SRashika /* cached in the btrfs inode and can be accessed */ 12995e94d14SRashika atomic_add(2, &node->refs); 13016cdcec7SMiao Xie 131e1860a77SDavid Sterba ret = radix_tree_preload(GFP_NOFS); 13216cdcec7SMiao Xie if (ret) { 13316cdcec7SMiao Xie kmem_cache_free(delayed_node_cache, node); 13416cdcec7SMiao Xie return ERR_PTR(ret); 13516cdcec7SMiao Xie } 13616cdcec7SMiao Xie 13716cdcec7SMiao Xie spin_lock(&root->inode_lock); 1380d0ca30fSChris Mason ret = radix_tree_insert(&root->delayed_nodes_tree, ino, node); 13916cdcec7SMiao Xie if (ret == -EEXIST) { 14016cdcec7SMiao Xie spin_unlock(&root->inode_lock); 14196493031SJeff Mahoney kmem_cache_free(delayed_node_cache, node); 14216cdcec7SMiao Xie radix_tree_preload_end(); 14316cdcec7SMiao Xie goto again; 14416cdcec7SMiao Xie } 14516cdcec7SMiao Xie btrfs_inode->delayed_node = node; 14616cdcec7SMiao Xie spin_unlock(&root->inode_lock); 14716cdcec7SMiao Xie radix_tree_preload_end(); 14816cdcec7SMiao Xie 14916cdcec7SMiao Xie return node; 15016cdcec7SMiao Xie } 15116cdcec7SMiao Xie 15216cdcec7SMiao Xie /* 15316cdcec7SMiao Xie * Call it when holding delayed_node->mutex 15416cdcec7SMiao Xie * 15516cdcec7SMiao Xie * If mod = 1, add this node into the prepared list. 15616cdcec7SMiao Xie */ 15716cdcec7SMiao Xie static void btrfs_queue_delayed_node(struct btrfs_delayed_root *root, 15816cdcec7SMiao Xie struct btrfs_delayed_node *node, 15916cdcec7SMiao Xie int mod) 16016cdcec7SMiao Xie { 16116cdcec7SMiao Xie spin_lock(&root->lock); 1627cf35d91SMiao Xie if (test_bit(BTRFS_DELAYED_NODE_IN_LIST, &node->flags)) { 16316cdcec7SMiao Xie if (!list_empty(&node->p_list)) 16416cdcec7SMiao Xie list_move_tail(&node->p_list, &root->prepare_list); 16516cdcec7SMiao Xie else if (mod) 16616cdcec7SMiao Xie list_add_tail(&node->p_list, &root->prepare_list); 16716cdcec7SMiao Xie } else { 16816cdcec7SMiao Xie list_add_tail(&node->n_list, &root->node_list); 16916cdcec7SMiao Xie list_add_tail(&node->p_list, &root->prepare_list); 17016cdcec7SMiao Xie atomic_inc(&node->refs); /* inserted into list */ 17116cdcec7SMiao Xie root->nodes++; 1727cf35d91SMiao Xie set_bit(BTRFS_DELAYED_NODE_IN_LIST, &node->flags); 17316cdcec7SMiao Xie } 17416cdcec7SMiao Xie spin_unlock(&root->lock); 17516cdcec7SMiao Xie } 17616cdcec7SMiao Xie 17716cdcec7SMiao Xie /* Call it when holding delayed_node->mutex */ 17816cdcec7SMiao Xie static void btrfs_dequeue_delayed_node(struct btrfs_delayed_root *root, 17916cdcec7SMiao Xie struct btrfs_delayed_node *node) 18016cdcec7SMiao Xie { 18116cdcec7SMiao Xie spin_lock(&root->lock); 1827cf35d91SMiao Xie if (test_bit(BTRFS_DELAYED_NODE_IN_LIST, &node->flags)) { 18316cdcec7SMiao Xie root->nodes--; 18416cdcec7SMiao Xie atomic_dec(&node->refs); /* not in the list */ 18516cdcec7SMiao Xie list_del_init(&node->n_list); 18616cdcec7SMiao Xie if (!list_empty(&node->p_list)) 18716cdcec7SMiao Xie list_del_init(&node->p_list); 1887cf35d91SMiao Xie clear_bit(BTRFS_DELAYED_NODE_IN_LIST, &node->flags); 18916cdcec7SMiao Xie } 19016cdcec7SMiao Xie spin_unlock(&root->lock); 19116cdcec7SMiao Xie } 19216cdcec7SMiao Xie 19348a3b636SEric Sandeen static struct btrfs_delayed_node *btrfs_first_delayed_node( 19416cdcec7SMiao Xie struct btrfs_delayed_root *delayed_root) 19516cdcec7SMiao Xie { 19616cdcec7SMiao Xie struct list_head *p; 19716cdcec7SMiao Xie struct btrfs_delayed_node *node = NULL; 19816cdcec7SMiao Xie 19916cdcec7SMiao Xie spin_lock(&delayed_root->lock); 20016cdcec7SMiao Xie if (list_empty(&delayed_root->node_list)) 20116cdcec7SMiao Xie goto out; 20216cdcec7SMiao Xie 20316cdcec7SMiao Xie p = delayed_root->node_list.next; 20416cdcec7SMiao Xie node = list_entry(p, struct btrfs_delayed_node, n_list); 20516cdcec7SMiao Xie atomic_inc(&node->refs); 20616cdcec7SMiao Xie out: 20716cdcec7SMiao Xie spin_unlock(&delayed_root->lock); 20816cdcec7SMiao Xie 20916cdcec7SMiao Xie return node; 21016cdcec7SMiao Xie } 21116cdcec7SMiao Xie 21248a3b636SEric Sandeen static struct btrfs_delayed_node *btrfs_next_delayed_node( 21316cdcec7SMiao Xie struct btrfs_delayed_node *node) 21416cdcec7SMiao Xie { 21516cdcec7SMiao Xie struct btrfs_delayed_root *delayed_root; 21616cdcec7SMiao Xie struct list_head *p; 21716cdcec7SMiao Xie struct btrfs_delayed_node *next = NULL; 21816cdcec7SMiao Xie 21916cdcec7SMiao Xie delayed_root = node->root->fs_info->delayed_root; 22016cdcec7SMiao Xie spin_lock(&delayed_root->lock); 2217cf35d91SMiao Xie if (!test_bit(BTRFS_DELAYED_NODE_IN_LIST, &node->flags)) { 2227cf35d91SMiao Xie /* not in the list */ 22316cdcec7SMiao Xie if (list_empty(&delayed_root->node_list)) 22416cdcec7SMiao Xie goto out; 22516cdcec7SMiao Xie p = delayed_root->node_list.next; 22616cdcec7SMiao Xie } else if (list_is_last(&node->n_list, &delayed_root->node_list)) 22716cdcec7SMiao Xie goto out; 22816cdcec7SMiao Xie else 22916cdcec7SMiao Xie p = node->n_list.next; 23016cdcec7SMiao Xie 23116cdcec7SMiao Xie next = list_entry(p, struct btrfs_delayed_node, n_list); 23216cdcec7SMiao Xie atomic_inc(&next->refs); 23316cdcec7SMiao Xie out: 23416cdcec7SMiao Xie spin_unlock(&delayed_root->lock); 23516cdcec7SMiao Xie 23616cdcec7SMiao Xie return next; 23716cdcec7SMiao Xie } 23816cdcec7SMiao Xie 23916cdcec7SMiao Xie static void __btrfs_release_delayed_node( 24016cdcec7SMiao Xie struct btrfs_delayed_node *delayed_node, 24116cdcec7SMiao Xie int mod) 24216cdcec7SMiao Xie { 24316cdcec7SMiao Xie struct btrfs_delayed_root *delayed_root; 24416cdcec7SMiao Xie 24516cdcec7SMiao Xie if (!delayed_node) 24616cdcec7SMiao Xie return; 24716cdcec7SMiao Xie 24816cdcec7SMiao Xie delayed_root = delayed_node->root->fs_info->delayed_root; 24916cdcec7SMiao Xie 25016cdcec7SMiao Xie mutex_lock(&delayed_node->mutex); 25116cdcec7SMiao Xie if (delayed_node->count) 25216cdcec7SMiao Xie btrfs_queue_delayed_node(delayed_root, delayed_node, mod); 25316cdcec7SMiao Xie else 25416cdcec7SMiao Xie btrfs_dequeue_delayed_node(delayed_root, delayed_node); 25516cdcec7SMiao Xie mutex_unlock(&delayed_node->mutex); 25616cdcec7SMiao Xie 25716cdcec7SMiao Xie if (atomic_dec_and_test(&delayed_node->refs)) { 25896493031SJeff Mahoney bool free = false; 25916cdcec7SMiao Xie struct btrfs_root *root = delayed_node->root; 26016cdcec7SMiao Xie spin_lock(&root->inode_lock); 26116cdcec7SMiao Xie if (atomic_read(&delayed_node->refs) == 0) { 26216cdcec7SMiao Xie radix_tree_delete(&root->delayed_nodes_tree, 26316cdcec7SMiao Xie delayed_node->inode_id); 26496493031SJeff Mahoney free = true; 26516cdcec7SMiao Xie } 26616cdcec7SMiao Xie spin_unlock(&root->inode_lock); 26796493031SJeff Mahoney if (free) 26896493031SJeff Mahoney kmem_cache_free(delayed_node_cache, delayed_node); 26916cdcec7SMiao Xie } 27016cdcec7SMiao Xie } 27116cdcec7SMiao Xie 27216cdcec7SMiao Xie static inline void btrfs_release_delayed_node(struct btrfs_delayed_node *node) 27316cdcec7SMiao Xie { 27416cdcec7SMiao Xie __btrfs_release_delayed_node(node, 0); 27516cdcec7SMiao Xie } 27616cdcec7SMiao Xie 27748a3b636SEric Sandeen static struct btrfs_delayed_node *btrfs_first_prepared_delayed_node( 27816cdcec7SMiao Xie struct btrfs_delayed_root *delayed_root) 27916cdcec7SMiao Xie { 28016cdcec7SMiao Xie struct list_head *p; 28116cdcec7SMiao Xie struct btrfs_delayed_node *node = NULL; 28216cdcec7SMiao Xie 28316cdcec7SMiao Xie spin_lock(&delayed_root->lock); 28416cdcec7SMiao Xie if (list_empty(&delayed_root->prepare_list)) 28516cdcec7SMiao Xie goto out; 28616cdcec7SMiao Xie 28716cdcec7SMiao Xie p = delayed_root->prepare_list.next; 28816cdcec7SMiao Xie list_del_init(p); 28916cdcec7SMiao Xie node = list_entry(p, struct btrfs_delayed_node, p_list); 29016cdcec7SMiao Xie atomic_inc(&node->refs); 29116cdcec7SMiao Xie out: 29216cdcec7SMiao Xie spin_unlock(&delayed_root->lock); 29316cdcec7SMiao Xie 29416cdcec7SMiao Xie return node; 29516cdcec7SMiao Xie } 29616cdcec7SMiao Xie 29716cdcec7SMiao Xie static inline void btrfs_release_prepared_delayed_node( 29816cdcec7SMiao Xie struct btrfs_delayed_node *node) 29916cdcec7SMiao Xie { 30016cdcec7SMiao Xie __btrfs_release_delayed_node(node, 1); 30116cdcec7SMiao Xie } 30216cdcec7SMiao Xie 30348a3b636SEric Sandeen static struct btrfs_delayed_item *btrfs_alloc_delayed_item(u32 data_len) 30416cdcec7SMiao Xie { 30516cdcec7SMiao Xie struct btrfs_delayed_item *item; 30616cdcec7SMiao Xie item = kmalloc(sizeof(*item) + data_len, GFP_NOFS); 30716cdcec7SMiao Xie if (item) { 30816cdcec7SMiao Xie item->data_len = data_len; 30916cdcec7SMiao Xie item->ins_or_del = 0; 31016cdcec7SMiao Xie item->bytes_reserved = 0; 31116cdcec7SMiao Xie item->delayed_node = NULL; 31216cdcec7SMiao Xie atomic_set(&item->refs, 1); 31316cdcec7SMiao Xie } 31416cdcec7SMiao Xie return item; 31516cdcec7SMiao Xie } 31616cdcec7SMiao Xie 31716cdcec7SMiao Xie /* 31816cdcec7SMiao Xie * __btrfs_lookup_delayed_item - look up the delayed item by key 31916cdcec7SMiao Xie * @delayed_node: pointer to the delayed node 32016cdcec7SMiao Xie * @key: the key to look up 32116cdcec7SMiao Xie * @prev: used to store the prev item if the right item isn't found 32216cdcec7SMiao Xie * @next: used to store the next item if the right item isn't found 32316cdcec7SMiao Xie * 32416cdcec7SMiao Xie * Note: if we don't find the right item, we will return the prev item and 32516cdcec7SMiao Xie * the next item. 32616cdcec7SMiao Xie */ 32716cdcec7SMiao Xie static struct btrfs_delayed_item *__btrfs_lookup_delayed_item( 32816cdcec7SMiao Xie struct rb_root *root, 32916cdcec7SMiao Xie struct btrfs_key *key, 33016cdcec7SMiao Xie struct btrfs_delayed_item **prev, 33116cdcec7SMiao Xie struct btrfs_delayed_item **next) 33216cdcec7SMiao Xie { 33316cdcec7SMiao Xie struct rb_node *node, *prev_node = NULL; 33416cdcec7SMiao Xie struct btrfs_delayed_item *delayed_item = NULL; 33516cdcec7SMiao Xie int ret = 0; 33616cdcec7SMiao Xie 33716cdcec7SMiao Xie node = root->rb_node; 33816cdcec7SMiao Xie 33916cdcec7SMiao Xie while (node) { 34016cdcec7SMiao Xie delayed_item = rb_entry(node, struct btrfs_delayed_item, 34116cdcec7SMiao Xie rb_node); 34216cdcec7SMiao Xie prev_node = node; 34316cdcec7SMiao Xie ret = btrfs_comp_cpu_keys(&delayed_item->key, key); 34416cdcec7SMiao Xie if (ret < 0) 34516cdcec7SMiao Xie node = node->rb_right; 34616cdcec7SMiao Xie else if (ret > 0) 34716cdcec7SMiao Xie node = node->rb_left; 34816cdcec7SMiao Xie else 34916cdcec7SMiao Xie return delayed_item; 35016cdcec7SMiao Xie } 35116cdcec7SMiao Xie 35216cdcec7SMiao Xie if (prev) { 35316cdcec7SMiao Xie if (!prev_node) 35416cdcec7SMiao Xie *prev = NULL; 35516cdcec7SMiao Xie else if (ret < 0) 35616cdcec7SMiao Xie *prev = delayed_item; 35716cdcec7SMiao Xie else if ((node = rb_prev(prev_node)) != NULL) { 35816cdcec7SMiao Xie *prev = rb_entry(node, struct btrfs_delayed_item, 35916cdcec7SMiao Xie rb_node); 36016cdcec7SMiao Xie } else 36116cdcec7SMiao Xie *prev = NULL; 36216cdcec7SMiao Xie } 36316cdcec7SMiao Xie 36416cdcec7SMiao Xie if (next) { 36516cdcec7SMiao Xie if (!prev_node) 36616cdcec7SMiao Xie *next = NULL; 36716cdcec7SMiao Xie else if (ret > 0) 36816cdcec7SMiao Xie *next = delayed_item; 36916cdcec7SMiao Xie else if ((node = rb_next(prev_node)) != NULL) { 37016cdcec7SMiao Xie *next = rb_entry(node, struct btrfs_delayed_item, 37116cdcec7SMiao Xie rb_node); 37216cdcec7SMiao Xie } else 37316cdcec7SMiao Xie *next = NULL; 37416cdcec7SMiao Xie } 37516cdcec7SMiao Xie return NULL; 37616cdcec7SMiao Xie } 37716cdcec7SMiao Xie 37848a3b636SEric Sandeen static struct btrfs_delayed_item *__btrfs_lookup_delayed_insertion_item( 37916cdcec7SMiao Xie struct btrfs_delayed_node *delayed_node, 38016cdcec7SMiao Xie struct btrfs_key *key) 38116cdcec7SMiao Xie { 382e2c89907SMasahiro Yamada return __btrfs_lookup_delayed_item(&delayed_node->ins_root, key, 38316cdcec7SMiao Xie NULL, NULL); 38416cdcec7SMiao Xie } 38516cdcec7SMiao Xie 38616cdcec7SMiao Xie static int __btrfs_add_delayed_item(struct btrfs_delayed_node *delayed_node, 38716cdcec7SMiao Xie struct btrfs_delayed_item *ins, 38816cdcec7SMiao Xie int action) 38916cdcec7SMiao Xie { 39016cdcec7SMiao Xie struct rb_node **p, *node; 39116cdcec7SMiao Xie struct rb_node *parent_node = NULL; 39216cdcec7SMiao Xie struct rb_root *root; 39316cdcec7SMiao Xie struct btrfs_delayed_item *item; 39416cdcec7SMiao Xie int cmp; 39516cdcec7SMiao Xie 39616cdcec7SMiao Xie if (action == BTRFS_DELAYED_INSERTION_ITEM) 39716cdcec7SMiao Xie root = &delayed_node->ins_root; 39816cdcec7SMiao Xie else if (action == BTRFS_DELAYED_DELETION_ITEM) 39916cdcec7SMiao Xie root = &delayed_node->del_root; 40016cdcec7SMiao Xie else 40116cdcec7SMiao Xie BUG(); 40216cdcec7SMiao Xie p = &root->rb_node; 40316cdcec7SMiao Xie node = &ins->rb_node; 40416cdcec7SMiao Xie 40516cdcec7SMiao Xie while (*p) { 40616cdcec7SMiao Xie parent_node = *p; 40716cdcec7SMiao Xie item = rb_entry(parent_node, struct btrfs_delayed_item, 40816cdcec7SMiao Xie rb_node); 40916cdcec7SMiao Xie 41016cdcec7SMiao Xie cmp = btrfs_comp_cpu_keys(&item->key, &ins->key); 41116cdcec7SMiao Xie if (cmp < 0) 41216cdcec7SMiao Xie p = &(*p)->rb_right; 41316cdcec7SMiao Xie else if (cmp > 0) 41416cdcec7SMiao Xie p = &(*p)->rb_left; 41516cdcec7SMiao Xie else 41616cdcec7SMiao Xie return -EEXIST; 41716cdcec7SMiao Xie } 41816cdcec7SMiao Xie 41916cdcec7SMiao Xie rb_link_node(node, parent_node, p); 42016cdcec7SMiao Xie rb_insert_color(node, root); 42116cdcec7SMiao Xie ins->delayed_node = delayed_node; 42216cdcec7SMiao Xie ins->ins_or_del = action; 42316cdcec7SMiao Xie 42416cdcec7SMiao Xie if (ins->key.type == BTRFS_DIR_INDEX_KEY && 42516cdcec7SMiao Xie action == BTRFS_DELAYED_INSERTION_ITEM && 42616cdcec7SMiao Xie ins->key.offset >= delayed_node->index_cnt) 42716cdcec7SMiao Xie delayed_node->index_cnt = ins->key.offset + 1; 42816cdcec7SMiao Xie 42916cdcec7SMiao Xie delayed_node->count++; 43016cdcec7SMiao Xie atomic_inc(&delayed_node->root->fs_info->delayed_root->items); 43116cdcec7SMiao Xie return 0; 43216cdcec7SMiao Xie } 43316cdcec7SMiao Xie 43416cdcec7SMiao Xie static int __btrfs_add_delayed_insertion_item(struct btrfs_delayed_node *node, 43516cdcec7SMiao Xie struct btrfs_delayed_item *item) 43616cdcec7SMiao Xie { 43716cdcec7SMiao Xie return __btrfs_add_delayed_item(node, item, 43816cdcec7SMiao Xie BTRFS_DELAYED_INSERTION_ITEM); 43916cdcec7SMiao Xie } 44016cdcec7SMiao Xie 44116cdcec7SMiao Xie static int __btrfs_add_delayed_deletion_item(struct btrfs_delayed_node *node, 44216cdcec7SMiao Xie struct btrfs_delayed_item *item) 44316cdcec7SMiao Xie { 44416cdcec7SMiao Xie return __btrfs_add_delayed_item(node, item, 44516cdcec7SMiao Xie BTRFS_DELAYED_DELETION_ITEM); 44616cdcec7SMiao Xie } 44716cdcec7SMiao Xie 448de3cb945SChris Mason static void finish_one_item(struct btrfs_delayed_root *delayed_root) 449de3cb945SChris Mason { 450de3cb945SChris Mason int seq = atomic_inc_return(&delayed_root->items_seq); 451ee863954SDavid Sterba 452ee863954SDavid Sterba /* 453ee863954SDavid Sterba * atomic_dec_return implies a barrier for waitqueue_active 454ee863954SDavid Sterba */ 455de3cb945SChris Mason if ((atomic_dec_return(&delayed_root->items) < 456de3cb945SChris Mason BTRFS_DELAYED_BACKGROUND || seq % BTRFS_DELAYED_BATCH == 0) && 457de3cb945SChris Mason waitqueue_active(&delayed_root->wait)) 458de3cb945SChris Mason wake_up(&delayed_root->wait); 459de3cb945SChris Mason } 460de3cb945SChris Mason 46116cdcec7SMiao Xie static void __btrfs_remove_delayed_item(struct btrfs_delayed_item *delayed_item) 46216cdcec7SMiao Xie { 46316cdcec7SMiao Xie struct rb_root *root; 46416cdcec7SMiao Xie struct btrfs_delayed_root *delayed_root; 46516cdcec7SMiao Xie 46616cdcec7SMiao Xie delayed_root = delayed_item->delayed_node->root->fs_info->delayed_root; 46716cdcec7SMiao Xie 46816cdcec7SMiao Xie BUG_ON(!delayed_root); 46916cdcec7SMiao Xie BUG_ON(delayed_item->ins_or_del != BTRFS_DELAYED_DELETION_ITEM && 47016cdcec7SMiao Xie delayed_item->ins_or_del != BTRFS_DELAYED_INSERTION_ITEM); 47116cdcec7SMiao Xie 47216cdcec7SMiao Xie if (delayed_item->ins_or_del == BTRFS_DELAYED_INSERTION_ITEM) 47316cdcec7SMiao Xie root = &delayed_item->delayed_node->ins_root; 47416cdcec7SMiao Xie else 47516cdcec7SMiao Xie root = &delayed_item->delayed_node->del_root; 47616cdcec7SMiao Xie 47716cdcec7SMiao Xie rb_erase(&delayed_item->rb_node, root); 47816cdcec7SMiao Xie delayed_item->delayed_node->count--; 479de3cb945SChris Mason 480de3cb945SChris Mason finish_one_item(delayed_root); 48116cdcec7SMiao Xie } 48216cdcec7SMiao Xie 48316cdcec7SMiao Xie static void btrfs_release_delayed_item(struct btrfs_delayed_item *item) 48416cdcec7SMiao Xie { 48516cdcec7SMiao Xie if (item) { 48616cdcec7SMiao Xie __btrfs_remove_delayed_item(item); 48716cdcec7SMiao Xie if (atomic_dec_and_test(&item->refs)) 48816cdcec7SMiao Xie kfree(item); 48916cdcec7SMiao Xie } 49016cdcec7SMiao Xie } 49116cdcec7SMiao Xie 49248a3b636SEric Sandeen static struct btrfs_delayed_item *__btrfs_first_delayed_insertion_item( 49316cdcec7SMiao Xie struct btrfs_delayed_node *delayed_node) 49416cdcec7SMiao Xie { 49516cdcec7SMiao Xie struct rb_node *p; 49616cdcec7SMiao Xie struct btrfs_delayed_item *item = NULL; 49716cdcec7SMiao Xie 49816cdcec7SMiao Xie p = rb_first(&delayed_node->ins_root); 49916cdcec7SMiao Xie if (p) 50016cdcec7SMiao Xie item = rb_entry(p, struct btrfs_delayed_item, rb_node); 50116cdcec7SMiao Xie 50216cdcec7SMiao Xie return item; 50316cdcec7SMiao Xie } 50416cdcec7SMiao Xie 50548a3b636SEric Sandeen static struct btrfs_delayed_item *__btrfs_first_delayed_deletion_item( 50616cdcec7SMiao Xie struct btrfs_delayed_node *delayed_node) 50716cdcec7SMiao Xie { 50816cdcec7SMiao Xie struct rb_node *p; 50916cdcec7SMiao Xie struct btrfs_delayed_item *item = NULL; 51016cdcec7SMiao Xie 51116cdcec7SMiao Xie p = rb_first(&delayed_node->del_root); 51216cdcec7SMiao Xie if (p) 51316cdcec7SMiao Xie item = rb_entry(p, struct btrfs_delayed_item, rb_node); 51416cdcec7SMiao Xie 51516cdcec7SMiao Xie return item; 51616cdcec7SMiao Xie } 51716cdcec7SMiao Xie 51848a3b636SEric Sandeen static struct btrfs_delayed_item *__btrfs_next_delayed_item( 51916cdcec7SMiao Xie struct btrfs_delayed_item *item) 52016cdcec7SMiao Xie { 52116cdcec7SMiao Xie struct rb_node *p; 52216cdcec7SMiao Xie struct btrfs_delayed_item *next = NULL; 52316cdcec7SMiao Xie 52416cdcec7SMiao Xie p = rb_next(&item->rb_node); 52516cdcec7SMiao Xie if (p) 52616cdcec7SMiao Xie next = rb_entry(p, struct btrfs_delayed_item, rb_node); 52716cdcec7SMiao Xie 52816cdcec7SMiao Xie return next; 52916cdcec7SMiao Xie } 53016cdcec7SMiao Xie 53116cdcec7SMiao Xie static int btrfs_delayed_item_reserve_metadata(struct btrfs_trans_handle *trans, 5322ff7e61eSJeff Mahoney struct btrfs_fs_info *fs_info, 53316cdcec7SMiao Xie struct btrfs_delayed_item *item) 53416cdcec7SMiao Xie { 53516cdcec7SMiao Xie struct btrfs_block_rsv *src_rsv; 53616cdcec7SMiao Xie struct btrfs_block_rsv *dst_rsv; 53716cdcec7SMiao Xie u64 num_bytes; 53816cdcec7SMiao Xie int ret; 53916cdcec7SMiao Xie 54016cdcec7SMiao Xie if (!trans->bytes_reserved) 54116cdcec7SMiao Xie return 0; 54216cdcec7SMiao Xie 54316cdcec7SMiao Xie src_rsv = trans->block_rsv; 5440b246afaSJeff Mahoney dst_rsv = &fs_info->delayed_block_rsv; 54516cdcec7SMiao Xie 5460b246afaSJeff Mahoney num_bytes = btrfs_calc_trans_metadata_size(fs_info, 1); 54725d609f8SJosef Bacik ret = btrfs_block_rsv_migrate(src_rsv, dst_rsv, num_bytes, 1); 5488c2a3ca2SJosef Bacik if (!ret) { 5490b246afaSJeff Mahoney trace_btrfs_space_reservation(fs_info, "delayed_item", 5508c2a3ca2SJosef Bacik item->key.objectid, 5518c2a3ca2SJosef Bacik num_bytes, 1); 55216cdcec7SMiao Xie item->bytes_reserved = num_bytes; 5538c2a3ca2SJosef Bacik } 55416cdcec7SMiao Xie 55516cdcec7SMiao Xie return ret; 55616cdcec7SMiao Xie } 55716cdcec7SMiao Xie 5582ff7e61eSJeff Mahoney static void btrfs_delayed_item_release_metadata(struct btrfs_fs_info *fs_info, 55916cdcec7SMiao Xie struct btrfs_delayed_item *item) 56016cdcec7SMiao Xie { 56119fd2949SMiao Xie struct btrfs_block_rsv *rsv; 56219fd2949SMiao Xie 56316cdcec7SMiao Xie if (!item->bytes_reserved) 56416cdcec7SMiao Xie return; 56516cdcec7SMiao Xie 5660b246afaSJeff Mahoney rsv = &fs_info->delayed_block_rsv; 5670b246afaSJeff Mahoney trace_btrfs_space_reservation(fs_info, "delayed_item", 5688c2a3ca2SJosef Bacik item->key.objectid, item->bytes_reserved, 5698c2a3ca2SJosef Bacik 0); 5702ff7e61eSJeff Mahoney btrfs_block_rsv_release(fs_info, rsv, 57116cdcec7SMiao Xie item->bytes_reserved); 57216cdcec7SMiao Xie } 57316cdcec7SMiao Xie 57416cdcec7SMiao Xie static int btrfs_delayed_inode_reserve_metadata( 57516cdcec7SMiao Xie struct btrfs_trans_handle *trans, 57616cdcec7SMiao Xie struct btrfs_root *root, 5777fd2ae21SJosef Bacik struct inode *inode, 57816cdcec7SMiao Xie struct btrfs_delayed_node *node) 57916cdcec7SMiao Xie { 5800b246afaSJeff Mahoney struct btrfs_fs_info *fs_info = root->fs_info; 58116cdcec7SMiao Xie struct btrfs_block_rsv *src_rsv; 58216cdcec7SMiao Xie struct btrfs_block_rsv *dst_rsv; 58316cdcec7SMiao Xie u64 num_bytes; 58416cdcec7SMiao Xie int ret; 5858c2a3ca2SJosef Bacik bool release = false; 58616cdcec7SMiao Xie 58716cdcec7SMiao Xie src_rsv = trans->block_rsv; 5880b246afaSJeff Mahoney dst_rsv = &fs_info->delayed_block_rsv; 58916cdcec7SMiao Xie 5900b246afaSJeff Mahoney num_bytes = btrfs_calc_trans_metadata_size(fs_info, 1); 591c06a0e12SJosef Bacik 592c06a0e12SJosef Bacik /* 593c48f49d6SJosef Bacik * If our block_rsv is the delalloc block reserve then check and see if 594c48f49d6SJosef Bacik * we have our extra reservation for updating the inode. If not fall 595c48f49d6SJosef Bacik * through and try to reserve space quickly. 596c48f49d6SJosef Bacik * 597c48f49d6SJosef Bacik * We used to try and steal from the delalloc block rsv or the global 598c48f49d6SJosef Bacik * reserve, but we'd steal a full reservation, which isn't kind. We are 599c48f49d6SJosef Bacik * here through delalloc which means we've likely just cowed down close 600c48f49d6SJosef Bacik * to the leaf that contains the inode, so we would steal less just 601c48f49d6SJosef Bacik * doing the fallback inode update, so if we do end up having to steal 602c48f49d6SJosef Bacik * from the global block rsv we hopefully only steal one or two blocks 603c48f49d6SJosef Bacik * worth which is less likely to hurt us. 604c48f49d6SJosef Bacik */ 605c48f49d6SJosef Bacik if (src_rsv && src_rsv->type == BTRFS_BLOCK_RSV_DELALLOC) { 606c48f49d6SJosef Bacik spin_lock(&BTRFS_I(inode)->lock); 607c48f49d6SJosef Bacik if (test_and_clear_bit(BTRFS_INODE_DELALLOC_META_RESERVED, 608c48f49d6SJosef Bacik &BTRFS_I(inode)->runtime_flags)) 609c48f49d6SJosef Bacik release = true; 610c48f49d6SJosef Bacik else 611c48f49d6SJosef Bacik src_rsv = NULL; 612c48f49d6SJosef Bacik spin_unlock(&BTRFS_I(inode)->lock); 613c48f49d6SJosef Bacik } 614c48f49d6SJosef Bacik 615c48f49d6SJosef Bacik /* 616c06a0e12SJosef Bacik * btrfs_dirty_inode will update the inode under btrfs_join_transaction 617c06a0e12SJosef Bacik * which doesn't reserve space for speed. This is a problem since we 618c06a0e12SJosef Bacik * still need to reserve space for this update, so try to reserve the 619c06a0e12SJosef Bacik * space. 620c06a0e12SJosef Bacik * 621c06a0e12SJosef Bacik * Now if src_rsv == delalloc_block_rsv we'll let it just steal since 622c06a0e12SJosef Bacik * we're accounted for. 623c06a0e12SJosef Bacik */ 624e755d9abSChris Mason if (!src_rsv || (!trans->bytes_reserved && 62566d8f3ddSMiao Xie src_rsv->type != BTRFS_BLOCK_RSV_DELALLOC)) { 62608e007d2SMiao Xie ret = btrfs_block_rsv_add(root, dst_rsv, num_bytes, 62708e007d2SMiao Xie BTRFS_RESERVE_NO_FLUSH); 628c06a0e12SJosef Bacik /* 629c06a0e12SJosef Bacik * Since we're under a transaction reserve_metadata_bytes could 630c06a0e12SJosef Bacik * try to commit the transaction which will make it return 631c06a0e12SJosef Bacik * EAGAIN to make us stop the transaction we have, so return 632c06a0e12SJosef Bacik * ENOSPC instead so that btrfs_dirty_inode knows what to do. 633c06a0e12SJosef Bacik */ 634c06a0e12SJosef Bacik if (ret == -EAGAIN) 635c06a0e12SJosef Bacik ret = -ENOSPC; 6368c2a3ca2SJosef Bacik if (!ret) { 637c06a0e12SJosef Bacik node->bytes_reserved = num_bytes; 6380b246afaSJeff Mahoney trace_btrfs_space_reservation(fs_info, 6398c2a3ca2SJosef Bacik "delayed_inode", 6408c2a3ca2SJosef Bacik btrfs_ino(inode), 6418c2a3ca2SJosef Bacik num_bytes, 1); 6428c2a3ca2SJosef Bacik } 643c06a0e12SJosef Bacik return ret; 644c06a0e12SJosef Bacik } 645c06a0e12SJosef Bacik 64625d609f8SJosef Bacik ret = btrfs_block_rsv_migrate(src_rsv, dst_rsv, num_bytes, 1); 6477fd2ae21SJosef Bacik 6487fd2ae21SJosef Bacik /* 6497fd2ae21SJosef Bacik * Migrate only takes a reservation, it doesn't touch the size of the 6507fd2ae21SJosef Bacik * block_rsv. This is to simplify people who don't normally have things 6517fd2ae21SJosef Bacik * migrated from their block rsv. If they go to release their 6527fd2ae21SJosef Bacik * reservation, that will decrease the size as well, so if migrate 6537fd2ae21SJosef Bacik * reduced size we'd end up with a negative size. But for the 6547fd2ae21SJosef Bacik * delalloc_meta_reserved stuff we will only know to drop 1 reservation, 6557fd2ae21SJosef Bacik * but we could in fact do this reserve/migrate dance several times 6567fd2ae21SJosef Bacik * between the time we did the original reservation and we'd clean it 6577fd2ae21SJosef Bacik * up. So to take care of this, release the space for the meta 6587fd2ae21SJosef Bacik * reservation here. I think it may be time for a documentation page on 6597fd2ae21SJosef Bacik * how block rsvs. work. 6607fd2ae21SJosef Bacik */ 6618c2a3ca2SJosef Bacik if (!ret) { 6620b246afaSJeff Mahoney trace_btrfs_space_reservation(fs_info, "delayed_inode", 6638c2a3ca2SJosef Bacik btrfs_ino(inode), num_bytes, 1); 66416cdcec7SMiao Xie node->bytes_reserved = num_bytes; 6658c2a3ca2SJosef Bacik } 66616cdcec7SMiao Xie 6678c2a3ca2SJosef Bacik if (release) { 6680b246afaSJeff Mahoney trace_btrfs_space_reservation(fs_info, "delalloc", 6698c2a3ca2SJosef Bacik btrfs_ino(inode), num_bytes, 0); 6702ff7e61eSJeff Mahoney btrfs_block_rsv_release(fs_info, src_rsv, num_bytes); 6718c2a3ca2SJosef Bacik } 67216cdcec7SMiao Xie 67316cdcec7SMiao Xie return ret; 67416cdcec7SMiao Xie } 67516cdcec7SMiao Xie 6762ff7e61eSJeff Mahoney static void btrfs_delayed_inode_release_metadata(struct btrfs_fs_info *fs_info, 67716cdcec7SMiao Xie struct btrfs_delayed_node *node) 67816cdcec7SMiao Xie { 67916cdcec7SMiao Xie struct btrfs_block_rsv *rsv; 68016cdcec7SMiao Xie 68116cdcec7SMiao Xie if (!node->bytes_reserved) 68216cdcec7SMiao Xie return; 68316cdcec7SMiao Xie 6840b246afaSJeff Mahoney rsv = &fs_info->delayed_block_rsv; 6850b246afaSJeff Mahoney trace_btrfs_space_reservation(fs_info, "delayed_inode", 6868c2a3ca2SJosef Bacik node->inode_id, node->bytes_reserved, 0); 6872ff7e61eSJeff Mahoney btrfs_block_rsv_release(fs_info, rsv, 68816cdcec7SMiao Xie node->bytes_reserved); 68916cdcec7SMiao Xie node->bytes_reserved = 0; 69016cdcec7SMiao Xie } 69116cdcec7SMiao Xie 69216cdcec7SMiao Xie /* 69316cdcec7SMiao Xie * This helper will insert some continuous items into the same leaf according 69416cdcec7SMiao Xie * to the free space of the leaf. 69516cdcec7SMiao Xie */ 696afe5fea7STsutomu Itoh static int btrfs_batch_insert_items(struct btrfs_root *root, 69716cdcec7SMiao Xie struct btrfs_path *path, 69816cdcec7SMiao Xie struct btrfs_delayed_item *item) 69916cdcec7SMiao Xie { 7002ff7e61eSJeff Mahoney struct btrfs_fs_info *fs_info = root->fs_info; 70116cdcec7SMiao Xie struct btrfs_delayed_item *curr, *next; 70216cdcec7SMiao Xie int free_space; 70316cdcec7SMiao Xie int total_data_size = 0, total_size = 0; 70416cdcec7SMiao Xie struct extent_buffer *leaf; 70516cdcec7SMiao Xie char *data_ptr; 70616cdcec7SMiao Xie struct btrfs_key *keys; 70716cdcec7SMiao Xie u32 *data_size; 70816cdcec7SMiao Xie struct list_head head; 70916cdcec7SMiao Xie int slot; 71016cdcec7SMiao Xie int nitems; 71116cdcec7SMiao Xie int i; 71216cdcec7SMiao Xie int ret = 0; 71316cdcec7SMiao Xie 71416cdcec7SMiao Xie BUG_ON(!path->nodes[0]); 71516cdcec7SMiao Xie 71616cdcec7SMiao Xie leaf = path->nodes[0]; 7172ff7e61eSJeff Mahoney free_space = btrfs_leaf_free_space(fs_info, leaf); 71816cdcec7SMiao Xie INIT_LIST_HEAD(&head); 71916cdcec7SMiao Xie 72016cdcec7SMiao Xie next = item; 72117aca1c9SChris Mason nitems = 0; 72216cdcec7SMiao Xie 72316cdcec7SMiao Xie /* 72416cdcec7SMiao Xie * count the number of the continuous items that we can insert in batch 72516cdcec7SMiao Xie */ 72616cdcec7SMiao Xie while (total_size + next->data_len + sizeof(struct btrfs_item) <= 72716cdcec7SMiao Xie free_space) { 72816cdcec7SMiao Xie total_data_size += next->data_len; 72916cdcec7SMiao Xie total_size += next->data_len + sizeof(struct btrfs_item); 73016cdcec7SMiao Xie list_add_tail(&next->tree_list, &head); 73116cdcec7SMiao Xie nitems++; 73216cdcec7SMiao Xie 73316cdcec7SMiao Xie curr = next; 73416cdcec7SMiao Xie next = __btrfs_next_delayed_item(curr); 73516cdcec7SMiao Xie if (!next) 73616cdcec7SMiao Xie break; 73716cdcec7SMiao Xie 73816cdcec7SMiao Xie if (!btrfs_is_continuous_delayed_item(curr, next)) 73916cdcec7SMiao Xie break; 74016cdcec7SMiao Xie } 74116cdcec7SMiao Xie 74216cdcec7SMiao Xie if (!nitems) { 74316cdcec7SMiao Xie ret = 0; 74416cdcec7SMiao Xie goto out; 74516cdcec7SMiao Xie } 74616cdcec7SMiao Xie 74716cdcec7SMiao Xie /* 74816cdcec7SMiao Xie * we need allocate some memory space, but it might cause the task 74916cdcec7SMiao Xie * to sleep, so we set all locked nodes in the path to blocking locks 75016cdcec7SMiao Xie * first. 75116cdcec7SMiao Xie */ 75216cdcec7SMiao Xie btrfs_set_path_blocking(path); 75316cdcec7SMiao Xie 754d9b0d9baSDulshani Gunawardhana keys = kmalloc_array(nitems, sizeof(struct btrfs_key), GFP_NOFS); 75516cdcec7SMiao Xie if (!keys) { 75616cdcec7SMiao Xie ret = -ENOMEM; 75716cdcec7SMiao Xie goto out; 75816cdcec7SMiao Xie } 75916cdcec7SMiao Xie 760d9b0d9baSDulshani Gunawardhana data_size = kmalloc_array(nitems, sizeof(u32), GFP_NOFS); 76116cdcec7SMiao Xie if (!data_size) { 76216cdcec7SMiao Xie ret = -ENOMEM; 76316cdcec7SMiao Xie goto error; 76416cdcec7SMiao Xie } 76516cdcec7SMiao Xie 76616cdcec7SMiao Xie /* get keys of all the delayed items */ 76716cdcec7SMiao Xie i = 0; 76816cdcec7SMiao Xie list_for_each_entry(next, &head, tree_list) { 76916cdcec7SMiao Xie keys[i] = next->key; 77016cdcec7SMiao Xie data_size[i] = next->data_len; 77116cdcec7SMiao Xie i++; 77216cdcec7SMiao Xie } 77316cdcec7SMiao Xie 77416cdcec7SMiao Xie /* reset all the locked nodes in the patch to spinning locks. */ 775bd681513SChris Mason btrfs_clear_path_blocking(path, NULL, 0); 77616cdcec7SMiao Xie 77716cdcec7SMiao Xie /* insert the keys of the items */ 778afe5fea7STsutomu Itoh setup_items_for_insert(root, path, keys, data_size, 77916cdcec7SMiao Xie total_data_size, total_size, nitems); 78016cdcec7SMiao Xie 78116cdcec7SMiao Xie /* insert the dir index items */ 78216cdcec7SMiao Xie slot = path->slots[0]; 78316cdcec7SMiao Xie list_for_each_entry_safe(curr, next, &head, tree_list) { 78416cdcec7SMiao Xie data_ptr = btrfs_item_ptr(leaf, slot, char); 78516cdcec7SMiao Xie write_extent_buffer(leaf, &curr->data, 78616cdcec7SMiao Xie (unsigned long)data_ptr, 78716cdcec7SMiao Xie curr->data_len); 78816cdcec7SMiao Xie slot++; 78916cdcec7SMiao Xie 7902ff7e61eSJeff Mahoney btrfs_delayed_item_release_metadata(fs_info, curr); 79116cdcec7SMiao Xie 79216cdcec7SMiao Xie list_del(&curr->tree_list); 79316cdcec7SMiao Xie btrfs_release_delayed_item(curr); 79416cdcec7SMiao Xie } 79516cdcec7SMiao Xie 79616cdcec7SMiao Xie error: 79716cdcec7SMiao Xie kfree(data_size); 79816cdcec7SMiao Xie kfree(keys); 79916cdcec7SMiao Xie out: 80016cdcec7SMiao Xie return ret; 80116cdcec7SMiao Xie } 80216cdcec7SMiao Xie 80316cdcec7SMiao Xie /* 80416cdcec7SMiao Xie * This helper can just do simple insertion that needn't extend item for new 80516cdcec7SMiao Xie * data, such as directory name index insertion, inode insertion. 80616cdcec7SMiao Xie */ 80716cdcec7SMiao Xie static int btrfs_insert_delayed_item(struct btrfs_trans_handle *trans, 80816cdcec7SMiao Xie struct btrfs_root *root, 80916cdcec7SMiao Xie struct btrfs_path *path, 81016cdcec7SMiao Xie struct btrfs_delayed_item *delayed_item) 81116cdcec7SMiao Xie { 8122ff7e61eSJeff Mahoney struct btrfs_fs_info *fs_info = root->fs_info; 81316cdcec7SMiao Xie struct extent_buffer *leaf; 81416cdcec7SMiao Xie char *ptr; 81516cdcec7SMiao Xie int ret; 81616cdcec7SMiao Xie 81716cdcec7SMiao Xie ret = btrfs_insert_empty_item(trans, root, path, &delayed_item->key, 81816cdcec7SMiao Xie delayed_item->data_len); 81916cdcec7SMiao Xie if (ret < 0 && ret != -EEXIST) 82016cdcec7SMiao Xie return ret; 82116cdcec7SMiao Xie 82216cdcec7SMiao Xie leaf = path->nodes[0]; 82316cdcec7SMiao Xie 82416cdcec7SMiao Xie ptr = btrfs_item_ptr(leaf, path->slots[0], char); 82516cdcec7SMiao Xie 82616cdcec7SMiao Xie write_extent_buffer(leaf, delayed_item->data, (unsigned long)ptr, 82716cdcec7SMiao Xie delayed_item->data_len); 82816cdcec7SMiao Xie btrfs_mark_buffer_dirty(leaf); 82916cdcec7SMiao Xie 8302ff7e61eSJeff Mahoney btrfs_delayed_item_release_metadata(fs_info, delayed_item); 83116cdcec7SMiao Xie return 0; 83216cdcec7SMiao Xie } 83316cdcec7SMiao Xie 83416cdcec7SMiao Xie /* 83516cdcec7SMiao Xie * we insert an item first, then if there are some continuous items, we try 83616cdcec7SMiao Xie * to insert those items into the same leaf. 83716cdcec7SMiao Xie */ 83816cdcec7SMiao Xie static int btrfs_insert_delayed_items(struct btrfs_trans_handle *trans, 83916cdcec7SMiao Xie struct btrfs_path *path, 84016cdcec7SMiao Xie struct btrfs_root *root, 84116cdcec7SMiao Xie struct btrfs_delayed_node *node) 84216cdcec7SMiao Xie { 84316cdcec7SMiao Xie struct btrfs_delayed_item *curr, *prev; 84416cdcec7SMiao Xie int ret = 0; 84516cdcec7SMiao Xie 84616cdcec7SMiao Xie do_again: 84716cdcec7SMiao Xie mutex_lock(&node->mutex); 84816cdcec7SMiao Xie curr = __btrfs_first_delayed_insertion_item(node); 84916cdcec7SMiao Xie if (!curr) 85016cdcec7SMiao Xie goto insert_end; 85116cdcec7SMiao Xie 85216cdcec7SMiao Xie ret = btrfs_insert_delayed_item(trans, root, path, curr); 85316cdcec7SMiao Xie if (ret < 0) { 854945d8962SChris Mason btrfs_release_path(path); 85516cdcec7SMiao Xie goto insert_end; 85616cdcec7SMiao Xie } 85716cdcec7SMiao Xie 85816cdcec7SMiao Xie prev = curr; 85916cdcec7SMiao Xie curr = __btrfs_next_delayed_item(prev); 86016cdcec7SMiao Xie if (curr && btrfs_is_continuous_delayed_item(prev, curr)) { 86116cdcec7SMiao Xie /* insert the continuous items into the same leaf */ 86216cdcec7SMiao Xie path->slots[0]++; 863afe5fea7STsutomu Itoh btrfs_batch_insert_items(root, path, curr); 86416cdcec7SMiao Xie } 86516cdcec7SMiao Xie btrfs_release_delayed_item(prev); 86616cdcec7SMiao Xie btrfs_mark_buffer_dirty(path->nodes[0]); 86716cdcec7SMiao Xie 868945d8962SChris Mason btrfs_release_path(path); 86916cdcec7SMiao Xie mutex_unlock(&node->mutex); 87016cdcec7SMiao Xie goto do_again; 87116cdcec7SMiao Xie 87216cdcec7SMiao Xie insert_end: 87316cdcec7SMiao Xie mutex_unlock(&node->mutex); 87416cdcec7SMiao Xie return ret; 87516cdcec7SMiao Xie } 87616cdcec7SMiao Xie 87716cdcec7SMiao Xie static int btrfs_batch_delete_items(struct btrfs_trans_handle *trans, 87816cdcec7SMiao Xie struct btrfs_root *root, 87916cdcec7SMiao Xie struct btrfs_path *path, 88016cdcec7SMiao Xie struct btrfs_delayed_item *item) 88116cdcec7SMiao Xie { 8822ff7e61eSJeff Mahoney struct btrfs_fs_info *fs_info = root->fs_info; 88316cdcec7SMiao Xie struct btrfs_delayed_item *curr, *next; 88416cdcec7SMiao Xie struct extent_buffer *leaf; 88516cdcec7SMiao Xie struct btrfs_key key; 88616cdcec7SMiao Xie struct list_head head; 88716cdcec7SMiao Xie int nitems, i, last_item; 88816cdcec7SMiao Xie int ret = 0; 88916cdcec7SMiao Xie 89016cdcec7SMiao Xie BUG_ON(!path->nodes[0]); 89116cdcec7SMiao Xie 89216cdcec7SMiao Xie leaf = path->nodes[0]; 89316cdcec7SMiao Xie 89416cdcec7SMiao Xie i = path->slots[0]; 89516cdcec7SMiao Xie last_item = btrfs_header_nritems(leaf) - 1; 89616cdcec7SMiao Xie if (i > last_item) 89716cdcec7SMiao Xie return -ENOENT; /* FIXME: Is errno suitable? */ 89816cdcec7SMiao Xie 89916cdcec7SMiao Xie next = item; 90016cdcec7SMiao Xie INIT_LIST_HEAD(&head); 90116cdcec7SMiao Xie btrfs_item_key_to_cpu(leaf, &key, i); 90216cdcec7SMiao Xie nitems = 0; 90316cdcec7SMiao Xie /* 90416cdcec7SMiao Xie * count the number of the dir index items that we can delete in batch 90516cdcec7SMiao Xie */ 90616cdcec7SMiao Xie while (btrfs_comp_cpu_keys(&next->key, &key) == 0) { 90716cdcec7SMiao Xie list_add_tail(&next->tree_list, &head); 90816cdcec7SMiao Xie nitems++; 90916cdcec7SMiao Xie 91016cdcec7SMiao Xie curr = next; 91116cdcec7SMiao Xie next = __btrfs_next_delayed_item(curr); 91216cdcec7SMiao Xie if (!next) 91316cdcec7SMiao Xie break; 91416cdcec7SMiao Xie 91516cdcec7SMiao Xie if (!btrfs_is_continuous_delayed_item(curr, next)) 91616cdcec7SMiao Xie break; 91716cdcec7SMiao Xie 91816cdcec7SMiao Xie i++; 91916cdcec7SMiao Xie if (i > last_item) 92016cdcec7SMiao Xie break; 92116cdcec7SMiao Xie btrfs_item_key_to_cpu(leaf, &key, i); 92216cdcec7SMiao Xie } 92316cdcec7SMiao Xie 92416cdcec7SMiao Xie if (!nitems) 92516cdcec7SMiao Xie return 0; 92616cdcec7SMiao Xie 92716cdcec7SMiao Xie ret = btrfs_del_items(trans, root, path, path->slots[0], nitems); 92816cdcec7SMiao Xie if (ret) 92916cdcec7SMiao Xie goto out; 93016cdcec7SMiao Xie 93116cdcec7SMiao Xie list_for_each_entry_safe(curr, next, &head, tree_list) { 9322ff7e61eSJeff Mahoney btrfs_delayed_item_release_metadata(fs_info, curr); 93316cdcec7SMiao Xie list_del(&curr->tree_list); 93416cdcec7SMiao Xie btrfs_release_delayed_item(curr); 93516cdcec7SMiao Xie } 93616cdcec7SMiao Xie 93716cdcec7SMiao Xie out: 93816cdcec7SMiao Xie return ret; 93916cdcec7SMiao Xie } 94016cdcec7SMiao Xie 94116cdcec7SMiao Xie static int btrfs_delete_delayed_items(struct btrfs_trans_handle *trans, 94216cdcec7SMiao Xie struct btrfs_path *path, 94316cdcec7SMiao Xie struct btrfs_root *root, 94416cdcec7SMiao Xie struct btrfs_delayed_node *node) 94516cdcec7SMiao Xie { 94616cdcec7SMiao Xie struct btrfs_delayed_item *curr, *prev; 94716cdcec7SMiao Xie int ret = 0; 94816cdcec7SMiao Xie 94916cdcec7SMiao Xie do_again: 95016cdcec7SMiao Xie mutex_lock(&node->mutex); 95116cdcec7SMiao Xie curr = __btrfs_first_delayed_deletion_item(node); 95216cdcec7SMiao Xie if (!curr) 95316cdcec7SMiao Xie goto delete_fail; 95416cdcec7SMiao Xie 95516cdcec7SMiao Xie ret = btrfs_search_slot(trans, root, &curr->key, path, -1, 1); 95616cdcec7SMiao Xie if (ret < 0) 95716cdcec7SMiao Xie goto delete_fail; 95816cdcec7SMiao Xie else if (ret > 0) { 95916cdcec7SMiao Xie /* 96016cdcec7SMiao Xie * can't find the item which the node points to, so this node 96116cdcec7SMiao Xie * is invalid, just drop it. 96216cdcec7SMiao Xie */ 96316cdcec7SMiao Xie prev = curr; 96416cdcec7SMiao Xie curr = __btrfs_next_delayed_item(prev); 96516cdcec7SMiao Xie btrfs_release_delayed_item(prev); 96616cdcec7SMiao Xie ret = 0; 967945d8962SChris Mason btrfs_release_path(path); 96862095265SFengguang Wu if (curr) { 96962095265SFengguang Wu mutex_unlock(&node->mutex); 97016cdcec7SMiao Xie goto do_again; 97162095265SFengguang Wu } else 97216cdcec7SMiao Xie goto delete_fail; 97316cdcec7SMiao Xie } 97416cdcec7SMiao Xie 97516cdcec7SMiao Xie btrfs_batch_delete_items(trans, root, path, curr); 976945d8962SChris Mason btrfs_release_path(path); 97716cdcec7SMiao Xie mutex_unlock(&node->mutex); 97816cdcec7SMiao Xie goto do_again; 97916cdcec7SMiao Xie 98016cdcec7SMiao Xie delete_fail: 981945d8962SChris Mason btrfs_release_path(path); 98216cdcec7SMiao Xie mutex_unlock(&node->mutex); 98316cdcec7SMiao Xie return ret; 98416cdcec7SMiao Xie } 98516cdcec7SMiao Xie 98616cdcec7SMiao Xie static void btrfs_release_delayed_inode(struct btrfs_delayed_node *delayed_node) 98716cdcec7SMiao Xie { 98816cdcec7SMiao Xie struct btrfs_delayed_root *delayed_root; 98916cdcec7SMiao Xie 9907cf35d91SMiao Xie if (delayed_node && 9917cf35d91SMiao Xie test_bit(BTRFS_DELAYED_NODE_INODE_DIRTY, &delayed_node->flags)) { 99216cdcec7SMiao Xie BUG_ON(!delayed_node->root); 9937cf35d91SMiao Xie clear_bit(BTRFS_DELAYED_NODE_INODE_DIRTY, &delayed_node->flags); 99416cdcec7SMiao Xie delayed_node->count--; 99516cdcec7SMiao Xie 99616cdcec7SMiao Xie delayed_root = delayed_node->root->fs_info->delayed_root; 997de3cb945SChris Mason finish_one_item(delayed_root); 99816cdcec7SMiao Xie } 99916cdcec7SMiao Xie } 100016cdcec7SMiao Xie 100167de1176SMiao Xie static void btrfs_release_delayed_iref(struct btrfs_delayed_node *delayed_node) 100267de1176SMiao Xie { 100367de1176SMiao Xie struct btrfs_delayed_root *delayed_root; 100467de1176SMiao Xie 100567de1176SMiao Xie ASSERT(delayed_node->root); 100667de1176SMiao Xie clear_bit(BTRFS_DELAYED_NODE_DEL_IREF, &delayed_node->flags); 100767de1176SMiao Xie delayed_node->count--; 100867de1176SMiao Xie 100967de1176SMiao Xie delayed_root = delayed_node->root->fs_info->delayed_root; 101067de1176SMiao Xie finish_one_item(delayed_root); 101167de1176SMiao Xie } 101267de1176SMiao Xie 10130e8c36a9SMiao Xie static int __btrfs_update_delayed_inode(struct btrfs_trans_handle *trans, 101416cdcec7SMiao Xie struct btrfs_root *root, 101516cdcec7SMiao Xie struct btrfs_path *path, 101616cdcec7SMiao Xie struct btrfs_delayed_node *node) 101716cdcec7SMiao Xie { 10182ff7e61eSJeff Mahoney struct btrfs_fs_info *fs_info = root->fs_info; 101916cdcec7SMiao Xie struct btrfs_key key; 102016cdcec7SMiao Xie struct btrfs_inode_item *inode_item; 102116cdcec7SMiao Xie struct extent_buffer *leaf; 102267de1176SMiao Xie int mod; 102316cdcec7SMiao Xie int ret; 102416cdcec7SMiao Xie 102516cdcec7SMiao Xie key.objectid = node->inode_id; 1026962a298fSDavid Sterba key.type = BTRFS_INODE_ITEM_KEY; 102716cdcec7SMiao Xie key.offset = 0; 10280e8c36a9SMiao Xie 102967de1176SMiao Xie if (test_bit(BTRFS_DELAYED_NODE_DEL_IREF, &node->flags)) 103067de1176SMiao Xie mod = -1; 103167de1176SMiao Xie else 103267de1176SMiao Xie mod = 1; 103367de1176SMiao Xie 103467de1176SMiao Xie ret = btrfs_lookup_inode(trans, root, path, &key, mod); 103516cdcec7SMiao Xie if (ret > 0) { 1036945d8962SChris Mason btrfs_release_path(path); 103716cdcec7SMiao Xie return -ENOENT; 103816cdcec7SMiao Xie } else if (ret < 0) { 103916cdcec7SMiao Xie return ret; 104016cdcec7SMiao Xie } 104116cdcec7SMiao Xie 104216cdcec7SMiao Xie leaf = path->nodes[0]; 104316cdcec7SMiao Xie inode_item = btrfs_item_ptr(leaf, path->slots[0], 104416cdcec7SMiao Xie struct btrfs_inode_item); 104516cdcec7SMiao Xie write_extent_buffer(leaf, &node->inode_item, (unsigned long)inode_item, 104616cdcec7SMiao Xie sizeof(struct btrfs_inode_item)); 104716cdcec7SMiao Xie btrfs_mark_buffer_dirty(leaf); 104816cdcec7SMiao Xie 104967de1176SMiao Xie if (!test_bit(BTRFS_DELAYED_NODE_DEL_IREF, &node->flags)) 105067de1176SMiao Xie goto no_iref; 105167de1176SMiao Xie 105267de1176SMiao Xie path->slots[0]++; 105367de1176SMiao Xie if (path->slots[0] >= btrfs_header_nritems(leaf)) 105467de1176SMiao Xie goto search; 105567de1176SMiao Xie again: 105667de1176SMiao Xie btrfs_item_key_to_cpu(leaf, &key, path->slots[0]); 105767de1176SMiao Xie if (key.objectid != node->inode_id) 105867de1176SMiao Xie goto out; 105967de1176SMiao Xie 106067de1176SMiao Xie if (key.type != BTRFS_INODE_REF_KEY && 106167de1176SMiao Xie key.type != BTRFS_INODE_EXTREF_KEY) 106267de1176SMiao Xie goto out; 106367de1176SMiao Xie 106467de1176SMiao Xie /* 106567de1176SMiao Xie * Delayed iref deletion is for the inode who has only one link, 106667de1176SMiao Xie * so there is only one iref. The case that several irefs are 106767de1176SMiao Xie * in the same item doesn't exist. 106867de1176SMiao Xie */ 106967de1176SMiao Xie btrfs_del_item(trans, root, path); 107067de1176SMiao Xie out: 107167de1176SMiao Xie btrfs_release_delayed_iref(node); 107267de1176SMiao Xie no_iref: 107367de1176SMiao Xie btrfs_release_path(path); 107467de1176SMiao Xie err_out: 10752ff7e61eSJeff Mahoney btrfs_delayed_inode_release_metadata(fs_info, node); 107616cdcec7SMiao Xie btrfs_release_delayed_inode(node); 107716cdcec7SMiao Xie 107867de1176SMiao Xie return ret; 107967de1176SMiao Xie 108067de1176SMiao Xie search: 108167de1176SMiao Xie btrfs_release_path(path); 108267de1176SMiao Xie 1083962a298fSDavid Sterba key.type = BTRFS_INODE_EXTREF_KEY; 108467de1176SMiao Xie key.offset = -1; 108567de1176SMiao Xie ret = btrfs_search_slot(trans, root, &key, path, -1, 1); 108667de1176SMiao Xie if (ret < 0) 108767de1176SMiao Xie goto err_out; 108867de1176SMiao Xie ASSERT(ret); 108967de1176SMiao Xie 109067de1176SMiao Xie ret = 0; 109167de1176SMiao Xie leaf = path->nodes[0]; 109267de1176SMiao Xie path->slots[0]--; 109367de1176SMiao Xie goto again; 109416cdcec7SMiao Xie } 109516cdcec7SMiao Xie 10960e8c36a9SMiao Xie static inline int btrfs_update_delayed_inode(struct btrfs_trans_handle *trans, 10970e8c36a9SMiao Xie struct btrfs_root *root, 10980e8c36a9SMiao Xie struct btrfs_path *path, 10990e8c36a9SMiao Xie struct btrfs_delayed_node *node) 11000e8c36a9SMiao Xie { 11010e8c36a9SMiao Xie int ret; 11020e8c36a9SMiao Xie 11030e8c36a9SMiao Xie mutex_lock(&node->mutex); 11047cf35d91SMiao Xie if (!test_bit(BTRFS_DELAYED_NODE_INODE_DIRTY, &node->flags)) { 11050e8c36a9SMiao Xie mutex_unlock(&node->mutex); 11060e8c36a9SMiao Xie return 0; 11070e8c36a9SMiao Xie } 11080e8c36a9SMiao Xie 11090e8c36a9SMiao Xie ret = __btrfs_update_delayed_inode(trans, root, path, node); 11100e8c36a9SMiao Xie mutex_unlock(&node->mutex); 11110e8c36a9SMiao Xie return ret; 11120e8c36a9SMiao Xie } 11130e8c36a9SMiao Xie 11144ea41ce0SMiao Xie static inline int 11154ea41ce0SMiao Xie __btrfs_commit_inode_delayed_items(struct btrfs_trans_handle *trans, 11164ea41ce0SMiao Xie struct btrfs_path *path, 11174ea41ce0SMiao Xie struct btrfs_delayed_node *node) 11184ea41ce0SMiao Xie { 11194ea41ce0SMiao Xie int ret; 11204ea41ce0SMiao Xie 11214ea41ce0SMiao Xie ret = btrfs_insert_delayed_items(trans, path, node->root, node); 11224ea41ce0SMiao Xie if (ret) 11234ea41ce0SMiao Xie return ret; 11244ea41ce0SMiao Xie 11254ea41ce0SMiao Xie ret = btrfs_delete_delayed_items(trans, path, node->root, node); 11264ea41ce0SMiao Xie if (ret) 11274ea41ce0SMiao Xie return ret; 11284ea41ce0SMiao Xie 11294ea41ce0SMiao Xie ret = btrfs_update_delayed_inode(trans, node->root, path, node); 11304ea41ce0SMiao Xie return ret; 11314ea41ce0SMiao Xie } 11324ea41ce0SMiao Xie 113379787eaaSJeff Mahoney /* 113479787eaaSJeff Mahoney * Called when committing the transaction. 113579787eaaSJeff Mahoney * Returns 0 on success. 113679787eaaSJeff Mahoney * Returns < 0 on error and returns with an aborted transaction with any 113779787eaaSJeff Mahoney * outstanding delayed items cleaned up. 113879787eaaSJeff Mahoney */ 113996c3f433SJosef Bacik static int __btrfs_run_delayed_items(struct btrfs_trans_handle *trans, 11402ff7e61eSJeff Mahoney struct btrfs_fs_info *fs_info, int nr) 114116cdcec7SMiao Xie { 114216cdcec7SMiao Xie struct btrfs_delayed_root *delayed_root; 114316cdcec7SMiao Xie struct btrfs_delayed_node *curr_node, *prev_node; 114416cdcec7SMiao Xie struct btrfs_path *path; 114519fd2949SMiao Xie struct btrfs_block_rsv *block_rsv; 114616cdcec7SMiao Xie int ret = 0; 114796c3f433SJosef Bacik bool count = (nr > 0); 114816cdcec7SMiao Xie 114979787eaaSJeff Mahoney if (trans->aborted) 115079787eaaSJeff Mahoney return -EIO; 115179787eaaSJeff Mahoney 115216cdcec7SMiao Xie path = btrfs_alloc_path(); 115316cdcec7SMiao Xie if (!path) 115416cdcec7SMiao Xie return -ENOMEM; 115516cdcec7SMiao Xie path->leave_spinning = 1; 115616cdcec7SMiao Xie 115719fd2949SMiao Xie block_rsv = trans->block_rsv; 11580b246afaSJeff Mahoney trans->block_rsv = &fs_info->delayed_block_rsv; 115919fd2949SMiao Xie 1160ccdf9b30SJeff Mahoney delayed_root = fs_info->delayed_root; 116116cdcec7SMiao Xie 116216cdcec7SMiao Xie curr_node = btrfs_first_delayed_node(delayed_root); 116396c3f433SJosef Bacik while (curr_node && (!count || (count && nr--))) { 11644ea41ce0SMiao Xie ret = __btrfs_commit_inode_delayed_items(trans, path, 116516cdcec7SMiao Xie curr_node); 116616cdcec7SMiao Xie if (ret) { 116716cdcec7SMiao Xie btrfs_release_delayed_node(curr_node); 116896c3f433SJosef Bacik curr_node = NULL; 116966642832SJeff Mahoney btrfs_abort_transaction(trans, ret); 117016cdcec7SMiao Xie break; 117116cdcec7SMiao Xie } 117216cdcec7SMiao Xie 117316cdcec7SMiao Xie prev_node = curr_node; 117416cdcec7SMiao Xie curr_node = btrfs_next_delayed_node(curr_node); 117516cdcec7SMiao Xie btrfs_release_delayed_node(prev_node); 117616cdcec7SMiao Xie } 117716cdcec7SMiao Xie 117896c3f433SJosef Bacik if (curr_node) 117996c3f433SJosef Bacik btrfs_release_delayed_node(curr_node); 118016cdcec7SMiao Xie btrfs_free_path(path); 118119fd2949SMiao Xie trans->block_rsv = block_rsv; 118279787eaaSJeff Mahoney 118316cdcec7SMiao Xie return ret; 118416cdcec7SMiao Xie } 118516cdcec7SMiao Xie 118696c3f433SJosef Bacik int btrfs_run_delayed_items(struct btrfs_trans_handle *trans, 11872ff7e61eSJeff Mahoney struct btrfs_fs_info *fs_info) 118896c3f433SJosef Bacik { 11892ff7e61eSJeff Mahoney return __btrfs_run_delayed_items(trans, fs_info, -1); 119096c3f433SJosef Bacik } 119196c3f433SJosef Bacik 119296c3f433SJosef Bacik int btrfs_run_delayed_items_nr(struct btrfs_trans_handle *trans, 11932ff7e61eSJeff Mahoney struct btrfs_fs_info *fs_info, int nr) 119496c3f433SJosef Bacik { 11952ff7e61eSJeff Mahoney return __btrfs_run_delayed_items(trans, fs_info, nr); 119696c3f433SJosef Bacik } 119796c3f433SJosef Bacik 119816cdcec7SMiao Xie int btrfs_commit_inode_delayed_items(struct btrfs_trans_handle *trans, 119916cdcec7SMiao Xie struct inode *inode) 120016cdcec7SMiao Xie { 120116cdcec7SMiao Xie struct btrfs_delayed_node *delayed_node = btrfs_get_delayed_node(inode); 12024ea41ce0SMiao Xie struct btrfs_path *path; 12034ea41ce0SMiao Xie struct btrfs_block_rsv *block_rsv; 120416cdcec7SMiao Xie int ret; 120516cdcec7SMiao Xie 120616cdcec7SMiao Xie if (!delayed_node) 120716cdcec7SMiao Xie return 0; 120816cdcec7SMiao Xie 120916cdcec7SMiao Xie mutex_lock(&delayed_node->mutex); 121016cdcec7SMiao Xie if (!delayed_node->count) { 121116cdcec7SMiao Xie mutex_unlock(&delayed_node->mutex); 121216cdcec7SMiao Xie btrfs_release_delayed_node(delayed_node); 121316cdcec7SMiao Xie return 0; 121416cdcec7SMiao Xie } 121516cdcec7SMiao Xie mutex_unlock(&delayed_node->mutex); 121616cdcec7SMiao Xie 12174ea41ce0SMiao Xie path = btrfs_alloc_path(); 12183c77bd94SFilipe David Borba Manana if (!path) { 12193c77bd94SFilipe David Borba Manana btrfs_release_delayed_node(delayed_node); 12204ea41ce0SMiao Xie return -ENOMEM; 12213c77bd94SFilipe David Borba Manana } 12224ea41ce0SMiao Xie path->leave_spinning = 1; 12234ea41ce0SMiao Xie 12244ea41ce0SMiao Xie block_rsv = trans->block_rsv; 12254ea41ce0SMiao Xie trans->block_rsv = &delayed_node->root->fs_info->delayed_block_rsv; 12264ea41ce0SMiao Xie 12274ea41ce0SMiao Xie ret = __btrfs_commit_inode_delayed_items(trans, path, delayed_node); 12284ea41ce0SMiao Xie 122916cdcec7SMiao Xie btrfs_release_delayed_node(delayed_node); 12304ea41ce0SMiao Xie btrfs_free_path(path); 12314ea41ce0SMiao Xie trans->block_rsv = block_rsv; 12324ea41ce0SMiao Xie 123316cdcec7SMiao Xie return ret; 123416cdcec7SMiao Xie } 123516cdcec7SMiao Xie 12360e8c36a9SMiao Xie int btrfs_commit_inode_delayed_inode(struct inode *inode) 12370e8c36a9SMiao Xie { 12382ff7e61eSJeff Mahoney struct btrfs_fs_info *fs_info = btrfs_sb(inode->i_sb); 12390e8c36a9SMiao Xie struct btrfs_trans_handle *trans; 12400e8c36a9SMiao Xie struct btrfs_delayed_node *delayed_node = btrfs_get_delayed_node(inode); 12410e8c36a9SMiao Xie struct btrfs_path *path; 12420e8c36a9SMiao Xie struct btrfs_block_rsv *block_rsv; 12430e8c36a9SMiao Xie int ret; 12440e8c36a9SMiao Xie 12450e8c36a9SMiao Xie if (!delayed_node) 12460e8c36a9SMiao Xie return 0; 12470e8c36a9SMiao Xie 12480e8c36a9SMiao Xie mutex_lock(&delayed_node->mutex); 12497cf35d91SMiao Xie if (!test_bit(BTRFS_DELAYED_NODE_INODE_DIRTY, &delayed_node->flags)) { 12500e8c36a9SMiao Xie mutex_unlock(&delayed_node->mutex); 12510e8c36a9SMiao Xie btrfs_release_delayed_node(delayed_node); 12520e8c36a9SMiao Xie return 0; 12530e8c36a9SMiao Xie } 12540e8c36a9SMiao Xie mutex_unlock(&delayed_node->mutex); 12550e8c36a9SMiao Xie 12560e8c36a9SMiao Xie trans = btrfs_join_transaction(delayed_node->root); 12570e8c36a9SMiao Xie if (IS_ERR(trans)) { 12580e8c36a9SMiao Xie ret = PTR_ERR(trans); 12590e8c36a9SMiao Xie goto out; 12600e8c36a9SMiao Xie } 12610e8c36a9SMiao Xie 12620e8c36a9SMiao Xie path = btrfs_alloc_path(); 12630e8c36a9SMiao Xie if (!path) { 12640e8c36a9SMiao Xie ret = -ENOMEM; 12650e8c36a9SMiao Xie goto trans_out; 12660e8c36a9SMiao Xie } 12670e8c36a9SMiao Xie path->leave_spinning = 1; 12680e8c36a9SMiao Xie 12690e8c36a9SMiao Xie block_rsv = trans->block_rsv; 12702ff7e61eSJeff Mahoney trans->block_rsv = &fs_info->delayed_block_rsv; 12710e8c36a9SMiao Xie 12720e8c36a9SMiao Xie mutex_lock(&delayed_node->mutex); 12737cf35d91SMiao Xie if (test_bit(BTRFS_DELAYED_NODE_INODE_DIRTY, &delayed_node->flags)) 12740e8c36a9SMiao Xie ret = __btrfs_update_delayed_inode(trans, delayed_node->root, 12750e8c36a9SMiao Xie path, delayed_node); 12760e8c36a9SMiao Xie else 12770e8c36a9SMiao Xie ret = 0; 12780e8c36a9SMiao Xie mutex_unlock(&delayed_node->mutex); 12790e8c36a9SMiao Xie 12800e8c36a9SMiao Xie btrfs_free_path(path); 12810e8c36a9SMiao Xie trans->block_rsv = block_rsv; 12820e8c36a9SMiao Xie trans_out: 12833a45bb20SJeff Mahoney btrfs_end_transaction(trans); 12842ff7e61eSJeff Mahoney btrfs_btree_balance_dirty(fs_info); 12850e8c36a9SMiao Xie out: 12860e8c36a9SMiao Xie btrfs_release_delayed_node(delayed_node); 12870e8c36a9SMiao Xie 12880e8c36a9SMiao Xie return ret; 12890e8c36a9SMiao Xie } 12900e8c36a9SMiao Xie 129116cdcec7SMiao Xie void btrfs_remove_delayed_node(struct inode *inode) 129216cdcec7SMiao Xie { 129316cdcec7SMiao Xie struct btrfs_delayed_node *delayed_node; 129416cdcec7SMiao Xie 129516cdcec7SMiao Xie delayed_node = ACCESS_ONCE(BTRFS_I(inode)->delayed_node); 129616cdcec7SMiao Xie if (!delayed_node) 129716cdcec7SMiao Xie return; 129816cdcec7SMiao Xie 129916cdcec7SMiao Xie BTRFS_I(inode)->delayed_node = NULL; 130016cdcec7SMiao Xie btrfs_release_delayed_node(delayed_node); 130116cdcec7SMiao Xie } 130216cdcec7SMiao Xie 1303de3cb945SChris Mason struct btrfs_async_delayed_work { 1304de3cb945SChris Mason struct btrfs_delayed_root *delayed_root; 1305de3cb945SChris Mason int nr; 1306d458b054SQu Wenruo struct btrfs_work work; 130716cdcec7SMiao Xie }; 130816cdcec7SMiao Xie 1309d458b054SQu Wenruo static void btrfs_async_run_delayed_root(struct btrfs_work *work) 131016cdcec7SMiao Xie { 1311de3cb945SChris Mason struct btrfs_async_delayed_work *async_work; 1312de3cb945SChris Mason struct btrfs_delayed_root *delayed_root; 131316cdcec7SMiao Xie struct btrfs_trans_handle *trans; 131416cdcec7SMiao Xie struct btrfs_path *path; 131516cdcec7SMiao Xie struct btrfs_delayed_node *delayed_node = NULL; 131616cdcec7SMiao Xie struct btrfs_root *root; 131719fd2949SMiao Xie struct btrfs_block_rsv *block_rsv; 1318de3cb945SChris Mason int total_done = 0; 131916cdcec7SMiao Xie 1320de3cb945SChris Mason async_work = container_of(work, struct btrfs_async_delayed_work, work); 1321de3cb945SChris Mason delayed_root = async_work->delayed_root; 132216cdcec7SMiao Xie 132316cdcec7SMiao Xie path = btrfs_alloc_path(); 132416cdcec7SMiao Xie if (!path) 132516cdcec7SMiao Xie goto out; 132616cdcec7SMiao Xie 1327de3cb945SChris Mason again: 1328de3cb945SChris Mason if (atomic_read(&delayed_root->items) < BTRFS_DELAYED_BACKGROUND / 2) 1329de3cb945SChris Mason goto free_path; 1330de3cb945SChris Mason 1331de3cb945SChris Mason delayed_node = btrfs_first_prepared_delayed_node(delayed_root); 1332de3cb945SChris Mason if (!delayed_node) 1333de3cb945SChris Mason goto free_path; 1334de3cb945SChris Mason 1335de3cb945SChris Mason path->leave_spinning = 1; 133616cdcec7SMiao Xie root = delayed_node->root; 133716cdcec7SMiao Xie 1338ff5714ccSChris Mason trans = btrfs_join_transaction(root); 133916cdcec7SMiao Xie if (IS_ERR(trans)) 1340de3cb945SChris Mason goto release_path; 134116cdcec7SMiao Xie 134219fd2949SMiao Xie block_rsv = trans->block_rsv; 13436d668ddaSJosef Bacik trans->block_rsv = &root->fs_info->delayed_block_rsv; 134419fd2949SMiao Xie 13454ea41ce0SMiao Xie __btrfs_commit_inode_delayed_items(trans, path, delayed_node); 134616cdcec7SMiao Xie 134719fd2949SMiao Xie trans->block_rsv = block_rsv; 13483a45bb20SJeff Mahoney btrfs_end_transaction(trans); 13492ff7e61eSJeff Mahoney btrfs_btree_balance_dirty_nodelay(root->fs_info); 1350de3cb945SChris Mason 1351de3cb945SChris Mason release_path: 1352de3cb945SChris Mason btrfs_release_path(path); 1353de3cb945SChris Mason total_done++; 1354de3cb945SChris Mason 1355de3cb945SChris Mason btrfs_release_prepared_delayed_node(delayed_node); 1356*2939e1a8SMaxim Patlasov if ((async_work->nr == 0 && total_done < BTRFS_DELAYED_WRITEBACK) || 1357*2939e1a8SMaxim Patlasov total_done < async_work->nr) 1358de3cb945SChris Mason goto again; 1359de3cb945SChris Mason 136016cdcec7SMiao Xie free_path: 136116cdcec7SMiao Xie btrfs_free_path(path); 136216cdcec7SMiao Xie out: 1363de3cb945SChris Mason wake_up(&delayed_root->wait); 1364de3cb945SChris Mason kfree(async_work); 136516cdcec7SMiao Xie } 1366de3cb945SChris Mason 136716cdcec7SMiao Xie 136816cdcec7SMiao Xie static int btrfs_wq_run_delayed_node(struct btrfs_delayed_root *delayed_root, 1369a585e948SDaniel Dressler struct btrfs_fs_info *fs_info, int nr) 137016cdcec7SMiao Xie { 1371de3cb945SChris Mason struct btrfs_async_delayed_work *async_work; 137216cdcec7SMiao Xie 1373*2939e1a8SMaxim Patlasov if (atomic_read(&delayed_root->items) < BTRFS_DELAYED_BACKGROUND || 1374*2939e1a8SMaxim Patlasov btrfs_workqueue_normal_congested(fs_info->delayed_workers)) 137516cdcec7SMiao Xie return 0; 137616cdcec7SMiao Xie 1377de3cb945SChris Mason async_work = kmalloc(sizeof(*async_work), GFP_NOFS); 1378de3cb945SChris Mason if (!async_work) 137916cdcec7SMiao Xie return -ENOMEM; 138016cdcec7SMiao Xie 1381de3cb945SChris Mason async_work->delayed_root = delayed_root; 13829e0af237SLiu Bo btrfs_init_work(&async_work->work, btrfs_delayed_meta_helper, 13839e0af237SLiu Bo btrfs_async_run_delayed_root, NULL, NULL); 1384de3cb945SChris Mason async_work->nr = nr; 138516cdcec7SMiao Xie 1386a585e948SDaniel Dressler btrfs_queue_work(fs_info->delayed_workers, &async_work->work); 138716cdcec7SMiao Xie return 0; 138816cdcec7SMiao Xie } 138916cdcec7SMiao Xie 1390ccdf9b30SJeff Mahoney void btrfs_assert_delayed_root_empty(struct btrfs_fs_info *fs_info) 1391e999376fSChris Mason { 1392ccdf9b30SJeff Mahoney WARN_ON(btrfs_first_delayed_node(fs_info->delayed_root)); 1393e999376fSChris Mason } 1394e999376fSChris Mason 13950353808cSMiao Xie static int could_end_wait(struct btrfs_delayed_root *delayed_root, int seq) 1396de3cb945SChris Mason { 1397de3cb945SChris Mason int val = atomic_read(&delayed_root->items_seq); 1398de3cb945SChris Mason 13990353808cSMiao Xie if (val < seq || val >= seq + BTRFS_DELAYED_BATCH) 1400de3cb945SChris Mason return 1; 14010353808cSMiao Xie 14020353808cSMiao Xie if (atomic_read(&delayed_root->items) < BTRFS_DELAYED_BACKGROUND) 14030353808cSMiao Xie return 1; 14040353808cSMiao Xie 1405de3cb945SChris Mason return 0; 1406de3cb945SChris Mason } 1407de3cb945SChris Mason 14082ff7e61eSJeff Mahoney void btrfs_balance_delayed_items(struct btrfs_fs_info *fs_info) 140916cdcec7SMiao Xie { 14102ff7e61eSJeff Mahoney struct btrfs_delayed_root *delayed_root = fs_info->delayed_root; 141116cdcec7SMiao Xie 141216cdcec7SMiao Xie if (atomic_read(&delayed_root->items) < BTRFS_DELAYED_BACKGROUND) 141316cdcec7SMiao Xie return; 141416cdcec7SMiao Xie 141516cdcec7SMiao Xie if (atomic_read(&delayed_root->items) >= BTRFS_DELAYED_WRITEBACK) { 14160353808cSMiao Xie int seq; 141716cdcec7SMiao Xie int ret; 14180353808cSMiao Xie 14190353808cSMiao Xie seq = atomic_read(&delayed_root->items_seq); 1420de3cb945SChris Mason 1421a585e948SDaniel Dressler ret = btrfs_wq_run_delayed_node(delayed_root, fs_info, 0); 142216cdcec7SMiao Xie if (ret) 142316cdcec7SMiao Xie return; 142416cdcec7SMiao Xie 14250353808cSMiao Xie wait_event_interruptible(delayed_root->wait, 14260353808cSMiao Xie could_end_wait(delayed_root, seq)); 14274dd466d3SMiao Xie return; 142816cdcec7SMiao Xie } 142916cdcec7SMiao Xie 1430a585e948SDaniel Dressler btrfs_wq_run_delayed_node(delayed_root, fs_info, BTRFS_DELAYED_BATCH); 143116cdcec7SMiao Xie } 143216cdcec7SMiao Xie 143379787eaaSJeff Mahoney /* Will return 0 or -ENOMEM */ 143416cdcec7SMiao Xie int btrfs_insert_delayed_dir_index(struct btrfs_trans_handle *trans, 14352ff7e61eSJeff Mahoney struct btrfs_fs_info *fs_info, 14362ff7e61eSJeff Mahoney const char *name, int name_len, 14372ff7e61eSJeff Mahoney struct inode *dir, 143816cdcec7SMiao Xie struct btrfs_disk_key *disk_key, u8 type, 143916cdcec7SMiao Xie u64 index) 144016cdcec7SMiao Xie { 144116cdcec7SMiao Xie struct btrfs_delayed_node *delayed_node; 144216cdcec7SMiao Xie struct btrfs_delayed_item *delayed_item; 144316cdcec7SMiao Xie struct btrfs_dir_item *dir_item; 144416cdcec7SMiao Xie int ret; 144516cdcec7SMiao Xie 144616cdcec7SMiao Xie delayed_node = btrfs_get_or_create_delayed_node(dir); 144716cdcec7SMiao Xie if (IS_ERR(delayed_node)) 144816cdcec7SMiao Xie return PTR_ERR(delayed_node); 144916cdcec7SMiao Xie 145016cdcec7SMiao Xie delayed_item = btrfs_alloc_delayed_item(sizeof(*dir_item) + name_len); 145116cdcec7SMiao Xie if (!delayed_item) { 145216cdcec7SMiao Xie ret = -ENOMEM; 145316cdcec7SMiao Xie goto release_node; 145416cdcec7SMiao Xie } 145516cdcec7SMiao Xie 14560d0ca30fSChris Mason delayed_item->key.objectid = btrfs_ino(dir); 1457962a298fSDavid Sterba delayed_item->key.type = BTRFS_DIR_INDEX_KEY; 145816cdcec7SMiao Xie delayed_item->key.offset = index; 145916cdcec7SMiao Xie 146016cdcec7SMiao Xie dir_item = (struct btrfs_dir_item *)delayed_item->data; 146116cdcec7SMiao Xie dir_item->location = *disk_key; 14623cae210fSQu Wenruo btrfs_set_stack_dir_transid(dir_item, trans->transid); 14633cae210fSQu Wenruo btrfs_set_stack_dir_data_len(dir_item, 0); 14643cae210fSQu Wenruo btrfs_set_stack_dir_name_len(dir_item, name_len); 14653cae210fSQu Wenruo btrfs_set_stack_dir_type(dir_item, type); 146616cdcec7SMiao Xie memcpy((char *)(dir_item + 1), name, name_len); 146716cdcec7SMiao Xie 14682ff7e61eSJeff Mahoney ret = btrfs_delayed_item_reserve_metadata(trans, fs_info, delayed_item); 14698c2a3ca2SJosef Bacik /* 14708c2a3ca2SJosef Bacik * we have reserved enough space when we start a new transaction, 14718c2a3ca2SJosef Bacik * so reserving metadata failure is impossible 14728c2a3ca2SJosef Bacik */ 14738c2a3ca2SJosef Bacik BUG_ON(ret); 14748c2a3ca2SJosef Bacik 14758c2a3ca2SJosef Bacik 147616cdcec7SMiao Xie mutex_lock(&delayed_node->mutex); 147716cdcec7SMiao Xie ret = __btrfs_add_delayed_insertion_item(delayed_node, delayed_item); 147816cdcec7SMiao Xie if (unlikely(ret)) { 14792ff7e61eSJeff Mahoney btrfs_err(fs_info, 14805d163e0eSJeff Mahoney "err add delayed dir index item(name: %.*s) into the insertion tree of the delayed node(root id: %llu, inode id: %llu, errno: %d)", 1481bdab49d7SFilipe David Borba Manana name_len, name, delayed_node->root->objectid, 1482c1c9ff7cSGeert Uytterhoeven delayed_node->inode_id, ret); 148316cdcec7SMiao Xie BUG(); 148416cdcec7SMiao Xie } 148516cdcec7SMiao Xie mutex_unlock(&delayed_node->mutex); 148616cdcec7SMiao Xie 148716cdcec7SMiao Xie release_node: 148816cdcec7SMiao Xie btrfs_release_delayed_node(delayed_node); 148916cdcec7SMiao Xie return ret; 149016cdcec7SMiao Xie } 149116cdcec7SMiao Xie 14922ff7e61eSJeff Mahoney static int btrfs_delete_delayed_insertion_item(struct btrfs_fs_info *fs_info, 149316cdcec7SMiao Xie struct btrfs_delayed_node *node, 149416cdcec7SMiao Xie struct btrfs_key *key) 149516cdcec7SMiao Xie { 149616cdcec7SMiao Xie struct btrfs_delayed_item *item; 149716cdcec7SMiao Xie 149816cdcec7SMiao Xie mutex_lock(&node->mutex); 149916cdcec7SMiao Xie item = __btrfs_lookup_delayed_insertion_item(node, key); 150016cdcec7SMiao Xie if (!item) { 150116cdcec7SMiao Xie mutex_unlock(&node->mutex); 150216cdcec7SMiao Xie return 1; 150316cdcec7SMiao Xie } 150416cdcec7SMiao Xie 15052ff7e61eSJeff Mahoney btrfs_delayed_item_release_metadata(fs_info, item); 150616cdcec7SMiao Xie btrfs_release_delayed_item(item); 150716cdcec7SMiao Xie mutex_unlock(&node->mutex); 150816cdcec7SMiao Xie return 0; 150916cdcec7SMiao Xie } 151016cdcec7SMiao Xie 151116cdcec7SMiao Xie int btrfs_delete_delayed_dir_index(struct btrfs_trans_handle *trans, 15122ff7e61eSJeff Mahoney struct btrfs_fs_info *fs_info, 15132ff7e61eSJeff Mahoney struct inode *dir, u64 index) 151416cdcec7SMiao Xie { 151516cdcec7SMiao Xie struct btrfs_delayed_node *node; 151616cdcec7SMiao Xie struct btrfs_delayed_item *item; 151716cdcec7SMiao Xie struct btrfs_key item_key; 151816cdcec7SMiao Xie int ret; 151916cdcec7SMiao Xie 152016cdcec7SMiao Xie node = btrfs_get_or_create_delayed_node(dir); 152116cdcec7SMiao Xie if (IS_ERR(node)) 152216cdcec7SMiao Xie return PTR_ERR(node); 152316cdcec7SMiao Xie 15240d0ca30fSChris Mason item_key.objectid = btrfs_ino(dir); 1525962a298fSDavid Sterba item_key.type = BTRFS_DIR_INDEX_KEY; 152616cdcec7SMiao Xie item_key.offset = index; 152716cdcec7SMiao Xie 15282ff7e61eSJeff Mahoney ret = btrfs_delete_delayed_insertion_item(fs_info, node, &item_key); 152916cdcec7SMiao Xie if (!ret) 153016cdcec7SMiao Xie goto end; 153116cdcec7SMiao Xie 153216cdcec7SMiao Xie item = btrfs_alloc_delayed_item(0); 153316cdcec7SMiao Xie if (!item) { 153416cdcec7SMiao Xie ret = -ENOMEM; 153516cdcec7SMiao Xie goto end; 153616cdcec7SMiao Xie } 153716cdcec7SMiao Xie 153816cdcec7SMiao Xie item->key = item_key; 153916cdcec7SMiao Xie 15402ff7e61eSJeff Mahoney ret = btrfs_delayed_item_reserve_metadata(trans, fs_info, item); 154116cdcec7SMiao Xie /* 154216cdcec7SMiao Xie * we have reserved enough space when we start a new transaction, 154316cdcec7SMiao Xie * so reserving metadata failure is impossible. 154416cdcec7SMiao Xie */ 154516cdcec7SMiao Xie BUG_ON(ret); 154616cdcec7SMiao Xie 154716cdcec7SMiao Xie mutex_lock(&node->mutex); 154816cdcec7SMiao Xie ret = __btrfs_add_delayed_deletion_item(node, item); 154916cdcec7SMiao Xie if (unlikely(ret)) { 15502ff7e61eSJeff Mahoney btrfs_err(fs_info, 15515d163e0eSJeff Mahoney "err add delayed dir index item(index: %llu) into the deletion tree of the delayed node(root id: %llu, inode id: %llu, errno: %d)", 15525d163e0eSJeff Mahoney index, node->root->objectid, node->inode_id, ret); 155316cdcec7SMiao Xie BUG(); 155416cdcec7SMiao Xie } 155516cdcec7SMiao Xie mutex_unlock(&node->mutex); 155616cdcec7SMiao Xie end: 155716cdcec7SMiao Xie btrfs_release_delayed_node(node); 155816cdcec7SMiao Xie return ret; 155916cdcec7SMiao Xie } 156016cdcec7SMiao Xie 156116cdcec7SMiao Xie int btrfs_inode_delayed_dir_index_count(struct inode *inode) 156216cdcec7SMiao Xie { 15632f7e33d4SMiao Xie struct btrfs_delayed_node *delayed_node = btrfs_get_delayed_node(inode); 156416cdcec7SMiao Xie 156516cdcec7SMiao Xie if (!delayed_node) 156616cdcec7SMiao Xie return -ENOENT; 156716cdcec7SMiao Xie 156816cdcec7SMiao Xie /* 156916cdcec7SMiao Xie * Since we have held i_mutex of this directory, it is impossible that 157016cdcec7SMiao Xie * a new directory index is added into the delayed node and index_cnt 157116cdcec7SMiao Xie * is updated now. So we needn't lock the delayed node. 157216cdcec7SMiao Xie */ 15732f7e33d4SMiao Xie if (!delayed_node->index_cnt) { 15742f7e33d4SMiao Xie btrfs_release_delayed_node(delayed_node); 157516cdcec7SMiao Xie return -EINVAL; 15762f7e33d4SMiao Xie } 157716cdcec7SMiao Xie 157816cdcec7SMiao Xie BTRFS_I(inode)->index_cnt = delayed_node->index_cnt; 15792f7e33d4SMiao Xie btrfs_release_delayed_node(delayed_node); 15802f7e33d4SMiao Xie return 0; 158116cdcec7SMiao Xie } 158216cdcec7SMiao Xie 158302dbfc99SOmar Sandoval bool btrfs_readdir_get_delayed_items(struct inode *inode, 158402dbfc99SOmar Sandoval struct list_head *ins_list, 158516cdcec7SMiao Xie struct list_head *del_list) 158616cdcec7SMiao Xie { 158716cdcec7SMiao Xie struct btrfs_delayed_node *delayed_node; 158816cdcec7SMiao Xie struct btrfs_delayed_item *item; 158916cdcec7SMiao Xie 159016cdcec7SMiao Xie delayed_node = btrfs_get_delayed_node(inode); 159116cdcec7SMiao Xie if (!delayed_node) 159202dbfc99SOmar Sandoval return false; 159302dbfc99SOmar Sandoval 159402dbfc99SOmar Sandoval /* 159502dbfc99SOmar Sandoval * We can only do one readdir with delayed items at a time because of 159602dbfc99SOmar Sandoval * item->readdir_list. 159702dbfc99SOmar Sandoval */ 159802dbfc99SOmar Sandoval inode_unlock_shared(inode); 159902dbfc99SOmar Sandoval inode_lock(inode); 160016cdcec7SMiao Xie 160116cdcec7SMiao Xie mutex_lock(&delayed_node->mutex); 160216cdcec7SMiao Xie item = __btrfs_first_delayed_insertion_item(delayed_node); 160316cdcec7SMiao Xie while (item) { 160416cdcec7SMiao Xie atomic_inc(&item->refs); 160516cdcec7SMiao Xie list_add_tail(&item->readdir_list, ins_list); 160616cdcec7SMiao Xie item = __btrfs_next_delayed_item(item); 160716cdcec7SMiao Xie } 160816cdcec7SMiao Xie 160916cdcec7SMiao Xie item = __btrfs_first_delayed_deletion_item(delayed_node); 161016cdcec7SMiao Xie while (item) { 161116cdcec7SMiao Xie atomic_inc(&item->refs); 161216cdcec7SMiao Xie list_add_tail(&item->readdir_list, del_list); 161316cdcec7SMiao Xie item = __btrfs_next_delayed_item(item); 161416cdcec7SMiao Xie } 161516cdcec7SMiao Xie mutex_unlock(&delayed_node->mutex); 161616cdcec7SMiao Xie /* 161716cdcec7SMiao Xie * This delayed node is still cached in the btrfs inode, so refs 161816cdcec7SMiao Xie * must be > 1 now, and we needn't check it is going to be freed 161916cdcec7SMiao Xie * or not. 162016cdcec7SMiao Xie * 162116cdcec7SMiao Xie * Besides that, this function is used to read dir, we do not 162216cdcec7SMiao Xie * insert/delete delayed items in this period. So we also needn't 162316cdcec7SMiao Xie * requeue or dequeue this delayed node. 162416cdcec7SMiao Xie */ 162516cdcec7SMiao Xie atomic_dec(&delayed_node->refs); 162602dbfc99SOmar Sandoval 162702dbfc99SOmar Sandoval return true; 162816cdcec7SMiao Xie } 162916cdcec7SMiao Xie 163002dbfc99SOmar Sandoval void btrfs_readdir_put_delayed_items(struct inode *inode, 163102dbfc99SOmar Sandoval struct list_head *ins_list, 163216cdcec7SMiao Xie struct list_head *del_list) 163316cdcec7SMiao Xie { 163416cdcec7SMiao Xie struct btrfs_delayed_item *curr, *next; 163516cdcec7SMiao Xie 163616cdcec7SMiao Xie list_for_each_entry_safe(curr, next, ins_list, readdir_list) { 163716cdcec7SMiao Xie list_del(&curr->readdir_list); 163816cdcec7SMiao Xie if (atomic_dec_and_test(&curr->refs)) 163916cdcec7SMiao Xie kfree(curr); 164016cdcec7SMiao Xie } 164116cdcec7SMiao Xie 164216cdcec7SMiao Xie list_for_each_entry_safe(curr, next, del_list, readdir_list) { 164316cdcec7SMiao Xie list_del(&curr->readdir_list); 164416cdcec7SMiao Xie if (atomic_dec_and_test(&curr->refs)) 164516cdcec7SMiao Xie kfree(curr); 164616cdcec7SMiao Xie } 164702dbfc99SOmar Sandoval 164802dbfc99SOmar Sandoval /* 164902dbfc99SOmar Sandoval * The VFS is going to do up_read(), so we need to downgrade back to a 165002dbfc99SOmar Sandoval * read lock. 165102dbfc99SOmar Sandoval */ 165202dbfc99SOmar Sandoval downgrade_write(&inode->i_rwsem); 165316cdcec7SMiao Xie } 165416cdcec7SMiao Xie 165516cdcec7SMiao Xie int btrfs_should_delete_dir_index(struct list_head *del_list, 165616cdcec7SMiao Xie u64 index) 165716cdcec7SMiao Xie { 165816cdcec7SMiao Xie struct btrfs_delayed_item *curr, *next; 165916cdcec7SMiao Xie int ret; 166016cdcec7SMiao Xie 166116cdcec7SMiao Xie if (list_empty(del_list)) 166216cdcec7SMiao Xie return 0; 166316cdcec7SMiao Xie 166416cdcec7SMiao Xie list_for_each_entry_safe(curr, next, del_list, readdir_list) { 166516cdcec7SMiao Xie if (curr->key.offset > index) 166616cdcec7SMiao Xie break; 166716cdcec7SMiao Xie 166816cdcec7SMiao Xie list_del(&curr->readdir_list); 166916cdcec7SMiao Xie ret = (curr->key.offset == index); 167016cdcec7SMiao Xie 167116cdcec7SMiao Xie if (atomic_dec_and_test(&curr->refs)) 167216cdcec7SMiao Xie kfree(curr); 167316cdcec7SMiao Xie 167416cdcec7SMiao Xie if (ret) 167516cdcec7SMiao Xie return 1; 167616cdcec7SMiao Xie else 167716cdcec7SMiao Xie continue; 167816cdcec7SMiao Xie } 167916cdcec7SMiao Xie return 0; 168016cdcec7SMiao Xie } 168116cdcec7SMiao Xie 168216cdcec7SMiao Xie /* 168316cdcec7SMiao Xie * btrfs_readdir_delayed_dir_index - read dir info stored in the delayed tree 168416cdcec7SMiao Xie * 168516cdcec7SMiao Xie */ 16869cdda8d3SAl Viro int btrfs_readdir_delayed_dir_index(struct dir_context *ctx, 1687d2fbb2b5SJeff Mahoney struct list_head *ins_list) 168816cdcec7SMiao Xie { 168916cdcec7SMiao Xie struct btrfs_dir_item *di; 169016cdcec7SMiao Xie struct btrfs_delayed_item *curr, *next; 169116cdcec7SMiao Xie struct btrfs_key location; 169216cdcec7SMiao Xie char *name; 169316cdcec7SMiao Xie int name_len; 169416cdcec7SMiao Xie int over = 0; 169516cdcec7SMiao Xie unsigned char d_type; 169616cdcec7SMiao Xie 169716cdcec7SMiao Xie if (list_empty(ins_list)) 169816cdcec7SMiao Xie return 0; 169916cdcec7SMiao Xie 170016cdcec7SMiao Xie /* 170116cdcec7SMiao Xie * Changing the data of the delayed item is impossible. So 170216cdcec7SMiao Xie * we needn't lock them. And we have held i_mutex of the 170316cdcec7SMiao Xie * directory, nobody can delete any directory indexes now. 170416cdcec7SMiao Xie */ 170516cdcec7SMiao Xie list_for_each_entry_safe(curr, next, ins_list, readdir_list) { 170616cdcec7SMiao Xie list_del(&curr->readdir_list); 170716cdcec7SMiao Xie 17089cdda8d3SAl Viro if (curr->key.offset < ctx->pos) { 170916cdcec7SMiao Xie if (atomic_dec_and_test(&curr->refs)) 171016cdcec7SMiao Xie kfree(curr); 171116cdcec7SMiao Xie continue; 171216cdcec7SMiao Xie } 171316cdcec7SMiao Xie 17149cdda8d3SAl Viro ctx->pos = curr->key.offset; 171516cdcec7SMiao Xie 171616cdcec7SMiao Xie di = (struct btrfs_dir_item *)curr->data; 171716cdcec7SMiao Xie name = (char *)(di + 1); 17183cae210fSQu Wenruo name_len = btrfs_stack_dir_name_len(di); 171916cdcec7SMiao Xie 172016cdcec7SMiao Xie d_type = btrfs_filetype_table[di->type]; 172116cdcec7SMiao Xie btrfs_disk_key_to_cpu(&location, &di->location); 172216cdcec7SMiao Xie 17239cdda8d3SAl Viro over = !dir_emit(ctx, name, name_len, 172416cdcec7SMiao Xie location.objectid, d_type); 172516cdcec7SMiao Xie 172616cdcec7SMiao Xie if (atomic_dec_and_test(&curr->refs)) 172716cdcec7SMiao Xie kfree(curr); 172816cdcec7SMiao Xie 172916cdcec7SMiao Xie if (over) 173016cdcec7SMiao Xie return 1; 173116cdcec7SMiao Xie } 173216cdcec7SMiao Xie return 0; 173316cdcec7SMiao Xie } 173416cdcec7SMiao Xie 173516cdcec7SMiao Xie static void fill_stack_inode_item(struct btrfs_trans_handle *trans, 173616cdcec7SMiao Xie struct btrfs_inode_item *inode_item, 173716cdcec7SMiao Xie struct inode *inode) 173816cdcec7SMiao Xie { 17392f2f43d3SEric W. Biederman btrfs_set_stack_inode_uid(inode_item, i_uid_read(inode)); 17402f2f43d3SEric W. Biederman btrfs_set_stack_inode_gid(inode_item, i_gid_read(inode)); 174116cdcec7SMiao Xie btrfs_set_stack_inode_size(inode_item, BTRFS_I(inode)->disk_i_size); 174216cdcec7SMiao Xie btrfs_set_stack_inode_mode(inode_item, inode->i_mode); 174316cdcec7SMiao Xie btrfs_set_stack_inode_nlink(inode_item, inode->i_nlink); 174416cdcec7SMiao Xie btrfs_set_stack_inode_nbytes(inode_item, inode_get_bytes(inode)); 174516cdcec7SMiao Xie btrfs_set_stack_inode_generation(inode_item, 174616cdcec7SMiao Xie BTRFS_I(inode)->generation); 17470c4d2d95SJosef Bacik btrfs_set_stack_inode_sequence(inode_item, inode->i_version); 174816cdcec7SMiao Xie btrfs_set_stack_inode_transid(inode_item, trans->transid); 174916cdcec7SMiao Xie btrfs_set_stack_inode_rdev(inode_item, inode->i_rdev); 175016cdcec7SMiao Xie btrfs_set_stack_inode_flags(inode_item, BTRFS_I(inode)->flags); 1751ff5714ccSChris Mason btrfs_set_stack_inode_block_group(inode_item, 0); 175216cdcec7SMiao Xie 1753a937b979SDavid Sterba btrfs_set_stack_timespec_sec(&inode_item->atime, 175416cdcec7SMiao Xie inode->i_atime.tv_sec); 1755a937b979SDavid Sterba btrfs_set_stack_timespec_nsec(&inode_item->atime, 175616cdcec7SMiao Xie inode->i_atime.tv_nsec); 175716cdcec7SMiao Xie 1758a937b979SDavid Sterba btrfs_set_stack_timespec_sec(&inode_item->mtime, 175916cdcec7SMiao Xie inode->i_mtime.tv_sec); 1760a937b979SDavid Sterba btrfs_set_stack_timespec_nsec(&inode_item->mtime, 176116cdcec7SMiao Xie inode->i_mtime.tv_nsec); 176216cdcec7SMiao Xie 1763a937b979SDavid Sterba btrfs_set_stack_timespec_sec(&inode_item->ctime, 176416cdcec7SMiao Xie inode->i_ctime.tv_sec); 1765a937b979SDavid Sterba btrfs_set_stack_timespec_nsec(&inode_item->ctime, 176616cdcec7SMiao Xie inode->i_ctime.tv_nsec); 17679cc97d64Schandan r 17689cc97d64Schandan r btrfs_set_stack_timespec_sec(&inode_item->otime, 17699cc97d64Schandan r BTRFS_I(inode)->i_otime.tv_sec); 17709cc97d64Schandan r btrfs_set_stack_timespec_nsec(&inode_item->otime, 17719cc97d64Schandan r BTRFS_I(inode)->i_otime.tv_nsec); 177216cdcec7SMiao Xie } 177316cdcec7SMiao Xie 17742f7e33d4SMiao Xie int btrfs_fill_inode(struct inode *inode, u32 *rdev) 17752f7e33d4SMiao Xie { 17762f7e33d4SMiao Xie struct btrfs_delayed_node *delayed_node; 17772f7e33d4SMiao Xie struct btrfs_inode_item *inode_item; 17782f7e33d4SMiao Xie 17792f7e33d4SMiao Xie delayed_node = btrfs_get_delayed_node(inode); 17802f7e33d4SMiao Xie if (!delayed_node) 17812f7e33d4SMiao Xie return -ENOENT; 17822f7e33d4SMiao Xie 17832f7e33d4SMiao Xie mutex_lock(&delayed_node->mutex); 17847cf35d91SMiao Xie if (!test_bit(BTRFS_DELAYED_NODE_INODE_DIRTY, &delayed_node->flags)) { 17852f7e33d4SMiao Xie mutex_unlock(&delayed_node->mutex); 17862f7e33d4SMiao Xie btrfs_release_delayed_node(delayed_node); 17872f7e33d4SMiao Xie return -ENOENT; 17882f7e33d4SMiao Xie } 17892f7e33d4SMiao Xie 17902f7e33d4SMiao Xie inode_item = &delayed_node->inode_item; 17912f7e33d4SMiao Xie 17922f2f43d3SEric W. Biederman i_uid_write(inode, btrfs_stack_inode_uid(inode_item)); 17932f2f43d3SEric W. Biederman i_gid_write(inode, btrfs_stack_inode_gid(inode_item)); 17942f7e33d4SMiao Xie btrfs_i_size_write(inode, btrfs_stack_inode_size(inode_item)); 17952f7e33d4SMiao Xie inode->i_mode = btrfs_stack_inode_mode(inode_item); 1796bfe86848SMiklos Szeredi set_nlink(inode, btrfs_stack_inode_nlink(inode_item)); 17972f7e33d4SMiao Xie inode_set_bytes(inode, btrfs_stack_inode_nbytes(inode_item)); 17982f7e33d4SMiao Xie BTRFS_I(inode)->generation = btrfs_stack_inode_generation(inode_item); 17996e17d30bSYang Dongsheng BTRFS_I(inode)->last_trans = btrfs_stack_inode_transid(inode_item); 18006e17d30bSYang Dongsheng 18010c4d2d95SJosef Bacik inode->i_version = btrfs_stack_inode_sequence(inode_item); 18022f7e33d4SMiao Xie inode->i_rdev = 0; 18032f7e33d4SMiao Xie *rdev = btrfs_stack_inode_rdev(inode_item); 18042f7e33d4SMiao Xie BTRFS_I(inode)->flags = btrfs_stack_inode_flags(inode_item); 18052f7e33d4SMiao Xie 1806a937b979SDavid Sterba inode->i_atime.tv_sec = btrfs_stack_timespec_sec(&inode_item->atime); 1807a937b979SDavid Sterba inode->i_atime.tv_nsec = btrfs_stack_timespec_nsec(&inode_item->atime); 18082f7e33d4SMiao Xie 1809a937b979SDavid Sterba inode->i_mtime.tv_sec = btrfs_stack_timespec_sec(&inode_item->mtime); 1810a937b979SDavid Sterba inode->i_mtime.tv_nsec = btrfs_stack_timespec_nsec(&inode_item->mtime); 18112f7e33d4SMiao Xie 1812a937b979SDavid Sterba inode->i_ctime.tv_sec = btrfs_stack_timespec_sec(&inode_item->ctime); 1813a937b979SDavid Sterba inode->i_ctime.tv_nsec = btrfs_stack_timespec_nsec(&inode_item->ctime); 18142f7e33d4SMiao Xie 18159cc97d64Schandan r BTRFS_I(inode)->i_otime.tv_sec = 18169cc97d64Schandan r btrfs_stack_timespec_sec(&inode_item->otime); 18179cc97d64Schandan r BTRFS_I(inode)->i_otime.tv_nsec = 18189cc97d64Schandan r btrfs_stack_timespec_nsec(&inode_item->otime); 18199cc97d64Schandan r 18202f7e33d4SMiao Xie inode->i_generation = BTRFS_I(inode)->generation; 18212f7e33d4SMiao Xie BTRFS_I(inode)->index_cnt = (u64)-1; 18222f7e33d4SMiao Xie 18232f7e33d4SMiao Xie mutex_unlock(&delayed_node->mutex); 18242f7e33d4SMiao Xie btrfs_release_delayed_node(delayed_node); 18252f7e33d4SMiao Xie return 0; 18262f7e33d4SMiao Xie } 18272f7e33d4SMiao Xie 182816cdcec7SMiao Xie int btrfs_delayed_update_inode(struct btrfs_trans_handle *trans, 182916cdcec7SMiao Xie struct btrfs_root *root, struct inode *inode) 183016cdcec7SMiao Xie { 183116cdcec7SMiao Xie struct btrfs_delayed_node *delayed_node; 1832aa0467d8SDavid Sterba int ret = 0; 183316cdcec7SMiao Xie 183416cdcec7SMiao Xie delayed_node = btrfs_get_or_create_delayed_node(inode); 183516cdcec7SMiao Xie if (IS_ERR(delayed_node)) 183616cdcec7SMiao Xie return PTR_ERR(delayed_node); 183716cdcec7SMiao Xie 183816cdcec7SMiao Xie mutex_lock(&delayed_node->mutex); 18397cf35d91SMiao Xie if (test_bit(BTRFS_DELAYED_NODE_INODE_DIRTY, &delayed_node->flags)) { 184016cdcec7SMiao Xie fill_stack_inode_item(trans, &delayed_node->inode_item, inode); 184116cdcec7SMiao Xie goto release_node; 184216cdcec7SMiao Xie } 184316cdcec7SMiao Xie 18447fd2ae21SJosef Bacik ret = btrfs_delayed_inode_reserve_metadata(trans, root, inode, 18457fd2ae21SJosef Bacik delayed_node); 1846c06a0e12SJosef Bacik if (ret) 1847c06a0e12SJosef Bacik goto release_node; 184816cdcec7SMiao Xie 184916cdcec7SMiao Xie fill_stack_inode_item(trans, &delayed_node->inode_item, inode); 18507cf35d91SMiao Xie set_bit(BTRFS_DELAYED_NODE_INODE_DIRTY, &delayed_node->flags); 185116cdcec7SMiao Xie delayed_node->count++; 185216cdcec7SMiao Xie atomic_inc(&root->fs_info->delayed_root->items); 185316cdcec7SMiao Xie release_node: 185416cdcec7SMiao Xie mutex_unlock(&delayed_node->mutex); 185516cdcec7SMiao Xie btrfs_release_delayed_node(delayed_node); 185616cdcec7SMiao Xie return ret; 185716cdcec7SMiao Xie } 185816cdcec7SMiao Xie 185967de1176SMiao Xie int btrfs_delayed_delete_inode_ref(struct inode *inode) 186067de1176SMiao Xie { 18610b246afaSJeff Mahoney struct btrfs_fs_info *fs_info = btrfs_sb(inode->i_sb); 186267de1176SMiao Xie struct btrfs_delayed_node *delayed_node; 186367de1176SMiao Xie 18646f896054SChris Mason /* 18656f896054SChris Mason * we don't do delayed inode updates during log recovery because it 18666f896054SChris Mason * leads to enospc problems. This means we also can't do 18676f896054SChris Mason * delayed inode refs 18686f896054SChris Mason */ 18690b246afaSJeff Mahoney if (test_bit(BTRFS_FS_LOG_RECOVERING, &fs_info->flags)) 18706f896054SChris Mason return -EAGAIN; 18716f896054SChris Mason 187267de1176SMiao Xie delayed_node = btrfs_get_or_create_delayed_node(inode); 187367de1176SMiao Xie if (IS_ERR(delayed_node)) 187467de1176SMiao Xie return PTR_ERR(delayed_node); 187567de1176SMiao Xie 187667de1176SMiao Xie /* 187767de1176SMiao Xie * We don't reserve space for inode ref deletion is because: 187867de1176SMiao Xie * - We ONLY do async inode ref deletion for the inode who has only 187967de1176SMiao Xie * one link(i_nlink == 1), it means there is only one inode ref. 188067de1176SMiao Xie * And in most case, the inode ref and the inode item are in the 188167de1176SMiao Xie * same leaf, and we will deal with them at the same time. 188267de1176SMiao Xie * Since we are sure we will reserve the space for the inode item, 188367de1176SMiao Xie * it is unnecessary to reserve space for inode ref deletion. 188467de1176SMiao Xie * - If the inode ref and the inode item are not in the same leaf, 188567de1176SMiao Xie * We also needn't worry about enospc problem, because we reserve 188667de1176SMiao Xie * much more space for the inode update than it needs. 188767de1176SMiao Xie * - At the worst, we can steal some space from the global reservation. 188867de1176SMiao Xie * It is very rare. 188967de1176SMiao Xie */ 189067de1176SMiao Xie mutex_lock(&delayed_node->mutex); 189167de1176SMiao Xie if (test_bit(BTRFS_DELAYED_NODE_DEL_IREF, &delayed_node->flags)) 189267de1176SMiao Xie goto release_node; 189367de1176SMiao Xie 189467de1176SMiao Xie set_bit(BTRFS_DELAYED_NODE_DEL_IREF, &delayed_node->flags); 189567de1176SMiao Xie delayed_node->count++; 18960b246afaSJeff Mahoney atomic_inc(&fs_info->delayed_root->items); 189767de1176SMiao Xie release_node: 189867de1176SMiao Xie mutex_unlock(&delayed_node->mutex); 189967de1176SMiao Xie btrfs_release_delayed_node(delayed_node); 190067de1176SMiao Xie return 0; 190167de1176SMiao Xie } 190267de1176SMiao Xie 190316cdcec7SMiao Xie static void __btrfs_kill_delayed_node(struct btrfs_delayed_node *delayed_node) 190416cdcec7SMiao Xie { 190516cdcec7SMiao Xie struct btrfs_root *root = delayed_node->root; 19062ff7e61eSJeff Mahoney struct btrfs_fs_info *fs_info = root->fs_info; 190716cdcec7SMiao Xie struct btrfs_delayed_item *curr_item, *prev_item; 190816cdcec7SMiao Xie 190916cdcec7SMiao Xie mutex_lock(&delayed_node->mutex); 191016cdcec7SMiao Xie curr_item = __btrfs_first_delayed_insertion_item(delayed_node); 191116cdcec7SMiao Xie while (curr_item) { 19122ff7e61eSJeff Mahoney btrfs_delayed_item_release_metadata(fs_info, curr_item); 191316cdcec7SMiao Xie prev_item = curr_item; 191416cdcec7SMiao Xie curr_item = __btrfs_next_delayed_item(prev_item); 191516cdcec7SMiao Xie btrfs_release_delayed_item(prev_item); 191616cdcec7SMiao Xie } 191716cdcec7SMiao Xie 191816cdcec7SMiao Xie curr_item = __btrfs_first_delayed_deletion_item(delayed_node); 191916cdcec7SMiao Xie while (curr_item) { 19202ff7e61eSJeff Mahoney btrfs_delayed_item_release_metadata(fs_info, curr_item); 192116cdcec7SMiao Xie prev_item = curr_item; 192216cdcec7SMiao Xie curr_item = __btrfs_next_delayed_item(prev_item); 192316cdcec7SMiao Xie btrfs_release_delayed_item(prev_item); 192416cdcec7SMiao Xie } 192516cdcec7SMiao Xie 192667de1176SMiao Xie if (test_bit(BTRFS_DELAYED_NODE_DEL_IREF, &delayed_node->flags)) 192767de1176SMiao Xie btrfs_release_delayed_iref(delayed_node); 192867de1176SMiao Xie 19297cf35d91SMiao Xie if (test_bit(BTRFS_DELAYED_NODE_INODE_DIRTY, &delayed_node->flags)) { 19302ff7e61eSJeff Mahoney btrfs_delayed_inode_release_metadata(fs_info, delayed_node); 193116cdcec7SMiao Xie btrfs_release_delayed_inode(delayed_node); 193216cdcec7SMiao Xie } 193316cdcec7SMiao Xie mutex_unlock(&delayed_node->mutex); 193416cdcec7SMiao Xie } 193516cdcec7SMiao Xie 193616cdcec7SMiao Xie void btrfs_kill_delayed_inode_items(struct inode *inode) 193716cdcec7SMiao Xie { 193816cdcec7SMiao Xie struct btrfs_delayed_node *delayed_node; 193916cdcec7SMiao Xie 194016cdcec7SMiao Xie delayed_node = btrfs_get_delayed_node(inode); 194116cdcec7SMiao Xie if (!delayed_node) 194216cdcec7SMiao Xie return; 194316cdcec7SMiao Xie 194416cdcec7SMiao Xie __btrfs_kill_delayed_node(delayed_node); 194516cdcec7SMiao Xie btrfs_release_delayed_node(delayed_node); 194616cdcec7SMiao Xie } 194716cdcec7SMiao Xie 194816cdcec7SMiao Xie void btrfs_kill_all_delayed_nodes(struct btrfs_root *root) 194916cdcec7SMiao Xie { 195016cdcec7SMiao Xie u64 inode_id = 0; 195116cdcec7SMiao Xie struct btrfs_delayed_node *delayed_nodes[8]; 195216cdcec7SMiao Xie int i, n; 195316cdcec7SMiao Xie 195416cdcec7SMiao Xie while (1) { 195516cdcec7SMiao Xie spin_lock(&root->inode_lock); 195616cdcec7SMiao Xie n = radix_tree_gang_lookup(&root->delayed_nodes_tree, 195716cdcec7SMiao Xie (void **)delayed_nodes, inode_id, 195816cdcec7SMiao Xie ARRAY_SIZE(delayed_nodes)); 195916cdcec7SMiao Xie if (!n) { 196016cdcec7SMiao Xie spin_unlock(&root->inode_lock); 196116cdcec7SMiao Xie break; 196216cdcec7SMiao Xie } 196316cdcec7SMiao Xie 196416cdcec7SMiao Xie inode_id = delayed_nodes[n - 1]->inode_id + 1; 196516cdcec7SMiao Xie 196616cdcec7SMiao Xie for (i = 0; i < n; i++) 196716cdcec7SMiao Xie atomic_inc(&delayed_nodes[i]->refs); 196816cdcec7SMiao Xie spin_unlock(&root->inode_lock); 196916cdcec7SMiao Xie 197016cdcec7SMiao Xie for (i = 0; i < n; i++) { 197116cdcec7SMiao Xie __btrfs_kill_delayed_node(delayed_nodes[i]); 197216cdcec7SMiao Xie btrfs_release_delayed_node(delayed_nodes[i]); 197316cdcec7SMiao Xie } 197416cdcec7SMiao Xie } 197516cdcec7SMiao Xie } 197667cde344SMiao Xie 1977ccdf9b30SJeff Mahoney void btrfs_destroy_delayed_inodes(struct btrfs_fs_info *fs_info) 197867cde344SMiao Xie { 197967cde344SMiao Xie struct btrfs_delayed_node *curr_node, *prev_node; 198067cde344SMiao Xie 1981ccdf9b30SJeff Mahoney curr_node = btrfs_first_delayed_node(fs_info->delayed_root); 198267cde344SMiao Xie while (curr_node) { 198367cde344SMiao Xie __btrfs_kill_delayed_node(curr_node); 198467cde344SMiao Xie 198567cde344SMiao Xie prev_node = curr_node; 198667cde344SMiao Xie curr_node = btrfs_next_delayed_node(curr_node); 198767cde344SMiao Xie btrfs_release_delayed_node(prev_node); 198867cde344SMiao Xie } 198967cde344SMiao Xie } 199067cde344SMiao Xie 1991