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, 3716cdcec7SMiao Xie SLAB_RECLAIM_ACCOUNT | 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 if (delayed_node_cache) 4716cdcec7SMiao Xie kmem_cache_destroy(delayed_node_cache); 4816cdcec7SMiao Xie } 4916cdcec7SMiao Xie 5016cdcec7SMiao Xie static inline void btrfs_init_delayed_node( 5116cdcec7SMiao Xie struct btrfs_delayed_node *delayed_node, 5216cdcec7SMiao Xie struct btrfs_root *root, u64 inode_id) 5316cdcec7SMiao Xie { 5416cdcec7SMiao Xie delayed_node->root = root; 5516cdcec7SMiao Xie delayed_node->inode_id = inode_id; 5616cdcec7SMiao Xie atomic_set(&delayed_node->refs, 0); 5716cdcec7SMiao Xie delayed_node->count = 0; 587cf35d91SMiao Xie delayed_node->flags = 0; 5916cdcec7SMiao Xie delayed_node->ins_root = RB_ROOT; 6016cdcec7SMiao Xie delayed_node->del_root = RB_ROOT; 6116cdcec7SMiao Xie mutex_init(&delayed_node->mutex); 6216cdcec7SMiao Xie delayed_node->index_cnt = 0; 6316cdcec7SMiao Xie INIT_LIST_HEAD(&delayed_node->n_list); 6416cdcec7SMiao Xie INIT_LIST_HEAD(&delayed_node->p_list); 6516cdcec7SMiao Xie delayed_node->bytes_reserved = 0; 66293f7e07SLi Zefan memset(&delayed_node->inode_item, 0, sizeof(delayed_node->inode_item)); 6716cdcec7SMiao Xie } 6816cdcec7SMiao Xie 6916cdcec7SMiao Xie static inline int btrfs_is_continuous_delayed_item( 7016cdcec7SMiao Xie struct btrfs_delayed_item *item1, 7116cdcec7SMiao Xie struct btrfs_delayed_item *item2) 7216cdcec7SMiao Xie { 7316cdcec7SMiao Xie if (item1->key.type == BTRFS_DIR_INDEX_KEY && 7416cdcec7SMiao Xie item1->key.objectid == item2->key.objectid && 7516cdcec7SMiao Xie item1->key.type == item2->key.type && 7616cdcec7SMiao Xie item1->key.offset + 1 == item2->key.offset) 7716cdcec7SMiao Xie return 1; 7816cdcec7SMiao Xie return 0; 7916cdcec7SMiao Xie } 8016cdcec7SMiao Xie 8116cdcec7SMiao Xie static inline struct btrfs_delayed_root *btrfs_get_delayed_root( 8216cdcec7SMiao Xie struct btrfs_root *root) 8316cdcec7SMiao Xie { 8416cdcec7SMiao Xie return root->fs_info->delayed_root; 8516cdcec7SMiao Xie } 8616cdcec7SMiao Xie 872f7e33d4SMiao Xie static struct btrfs_delayed_node *btrfs_get_delayed_node(struct inode *inode) 882f7e33d4SMiao Xie { 892f7e33d4SMiao Xie struct btrfs_inode *btrfs_inode = BTRFS_I(inode); 902f7e33d4SMiao Xie struct btrfs_root *root = btrfs_inode->root; 912f7e33d4SMiao Xie u64 ino = btrfs_ino(inode); 922f7e33d4SMiao Xie struct btrfs_delayed_node *node; 932f7e33d4SMiao Xie 942f7e33d4SMiao Xie node = ACCESS_ONCE(btrfs_inode->delayed_node); 952f7e33d4SMiao Xie if (node) { 962f7e33d4SMiao Xie atomic_inc(&node->refs); 972f7e33d4SMiao Xie return node; 982f7e33d4SMiao Xie } 992f7e33d4SMiao Xie 1002f7e33d4SMiao Xie spin_lock(&root->inode_lock); 1012f7e33d4SMiao Xie node = radix_tree_lookup(&root->delayed_nodes_tree, ino); 1022f7e33d4SMiao Xie if (node) { 1032f7e33d4SMiao Xie if (btrfs_inode->delayed_node) { 1042f7e33d4SMiao Xie atomic_inc(&node->refs); /* can be accessed */ 1052f7e33d4SMiao Xie BUG_ON(btrfs_inode->delayed_node != node); 1062f7e33d4SMiao Xie spin_unlock(&root->inode_lock); 1072f7e33d4SMiao Xie return node; 1082f7e33d4SMiao Xie } 1092f7e33d4SMiao Xie btrfs_inode->delayed_node = node; 11095e94d14SRashika /* can be accessed and cached in the inode */ 11195e94d14SRashika atomic_add(2, &node->refs); 1122f7e33d4SMiao Xie spin_unlock(&root->inode_lock); 1132f7e33d4SMiao Xie return node; 1142f7e33d4SMiao Xie } 1152f7e33d4SMiao Xie spin_unlock(&root->inode_lock); 1162f7e33d4SMiao Xie 1172f7e33d4SMiao Xie return NULL; 1182f7e33d4SMiao Xie } 1192f7e33d4SMiao Xie 12079787eaaSJeff Mahoney /* Will return either the node or PTR_ERR(-ENOMEM) */ 12116cdcec7SMiao Xie static struct btrfs_delayed_node *btrfs_get_or_create_delayed_node( 12216cdcec7SMiao Xie struct inode *inode) 12316cdcec7SMiao Xie { 12416cdcec7SMiao Xie struct btrfs_delayed_node *node; 12516cdcec7SMiao Xie struct btrfs_inode *btrfs_inode = BTRFS_I(inode); 12616cdcec7SMiao Xie struct btrfs_root *root = btrfs_inode->root; 1270d0ca30fSChris Mason u64 ino = btrfs_ino(inode); 12816cdcec7SMiao Xie int ret; 12916cdcec7SMiao Xie 13016cdcec7SMiao Xie again: 1312f7e33d4SMiao Xie node = btrfs_get_delayed_node(inode); 1322f7e33d4SMiao Xie if (node) 13316cdcec7SMiao Xie return node; 13416cdcec7SMiao Xie 13516cdcec7SMiao Xie node = kmem_cache_alloc(delayed_node_cache, GFP_NOFS); 13616cdcec7SMiao Xie if (!node) 13716cdcec7SMiao Xie return ERR_PTR(-ENOMEM); 1380d0ca30fSChris Mason btrfs_init_delayed_node(node, root, ino); 13916cdcec7SMiao Xie 14095e94d14SRashika /* cached in the btrfs inode and can be accessed */ 14195e94d14SRashika atomic_add(2, &node->refs); 14216cdcec7SMiao Xie 14316cdcec7SMiao Xie ret = radix_tree_preload(GFP_NOFS & ~__GFP_HIGHMEM); 14416cdcec7SMiao Xie if (ret) { 14516cdcec7SMiao Xie kmem_cache_free(delayed_node_cache, node); 14616cdcec7SMiao Xie return ERR_PTR(ret); 14716cdcec7SMiao Xie } 14816cdcec7SMiao Xie 14916cdcec7SMiao Xie spin_lock(&root->inode_lock); 1500d0ca30fSChris Mason ret = radix_tree_insert(&root->delayed_nodes_tree, ino, node); 15116cdcec7SMiao Xie if (ret == -EEXIST) { 15216cdcec7SMiao Xie spin_unlock(&root->inode_lock); 15396493031SJeff Mahoney kmem_cache_free(delayed_node_cache, node); 15416cdcec7SMiao Xie radix_tree_preload_end(); 15516cdcec7SMiao Xie goto again; 15616cdcec7SMiao Xie } 15716cdcec7SMiao Xie btrfs_inode->delayed_node = node; 15816cdcec7SMiao Xie spin_unlock(&root->inode_lock); 15916cdcec7SMiao Xie radix_tree_preload_end(); 16016cdcec7SMiao Xie 16116cdcec7SMiao Xie return node; 16216cdcec7SMiao Xie } 16316cdcec7SMiao Xie 16416cdcec7SMiao Xie /* 16516cdcec7SMiao Xie * Call it when holding delayed_node->mutex 16616cdcec7SMiao Xie * 16716cdcec7SMiao Xie * If mod = 1, add this node into the prepared list. 16816cdcec7SMiao Xie */ 16916cdcec7SMiao Xie static void btrfs_queue_delayed_node(struct btrfs_delayed_root *root, 17016cdcec7SMiao Xie struct btrfs_delayed_node *node, 17116cdcec7SMiao Xie int mod) 17216cdcec7SMiao Xie { 17316cdcec7SMiao Xie spin_lock(&root->lock); 1747cf35d91SMiao Xie if (test_bit(BTRFS_DELAYED_NODE_IN_LIST, &node->flags)) { 17516cdcec7SMiao Xie if (!list_empty(&node->p_list)) 17616cdcec7SMiao Xie list_move_tail(&node->p_list, &root->prepare_list); 17716cdcec7SMiao Xie else if (mod) 17816cdcec7SMiao Xie list_add_tail(&node->p_list, &root->prepare_list); 17916cdcec7SMiao Xie } else { 18016cdcec7SMiao Xie list_add_tail(&node->n_list, &root->node_list); 18116cdcec7SMiao Xie list_add_tail(&node->p_list, &root->prepare_list); 18216cdcec7SMiao Xie atomic_inc(&node->refs); /* inserted into list */ 18316cdcec7SMiao Xie root->nodes++; 1847cf35d91SMiao Xie set_bit(BTRFS_DELAYED_NODE_IN_LIST, &node->flags); 18516cdcec7SMiao Xie } 18616cdcec7SMiao Xie spin_unlock(&root->lock); 18716cdcec7SMiao Xie } 18816cdcec7SMiao Xie 18916cdcec7SMiao Xie /* Call it when holding delayed_node->mutex */ 19016cdcec7SMiao Xie static void btrfs_dequeue_delayed_node(struct btrfs_delayed_root *root, 19116cdcec7SMiao Xie struct btrfs_delayed_node *node) 19216cdcec7SMiao Xie { 19316cdcec7SMiao Xie spin_lock(&root->lock); 1947cf35d91SMiao Xie if (test_bit(BTRFS_DELAYED_NODE_IN_LIST, &node->flags)) { 19516cdcec7SMiao Xie root->nodes--; 19616cdcec7SMiao Xie atomic_dec(&node->refs); /* not in the list */ 19716cdcec7SMiao Xie list_del_init(&node->n_list); 19816cdcec7SMiao Xie if (!list_empty(&node->p_list)) 19916cdcec7SMiao Xie list_del_init(&node->p_list); 2007cf35d91SMiao Xie clear_bit(BTRFS_DELAYED_NODE_IN_LIST, &node->flags); 20116cdcec7SMiao Xie } 20216cdcec7SMiao Xie spin_unlock(&root->lock); 20316cdcec7SMiao Xie } 20416cdcec7SMiao Xie 20548a3b636SEric Sandeen static struct btrfs_delayed_node *btrfs_first_delayed_node( 20616cdcec7SMiao Xie struct btrfs_delayed_root *delayed_root) 20716cdcec7SMiao Xie { 20816cdcec7SMiao Xie struct list_head *p; 20916cdcec7SMiao Xie struct btrfs_delayed_node *node = NULL; 21016cdcec7SMiao Xie 21116cdcec7SMiao Xie spin_lock(&delayed_root->lock); 21216cdcec7SMiao Xie if (list_empty(&delayed_root->node_list)) 21316cdcec7SMiao Xie goto out; 21416cdcec7SMiao Xie 21516cdcec7SMiao Xie p = delayed_root->node_list.next; 21616cdcec7SMiao Xie node = list_entry(p, struct btrfs_delayed_node, n_list); 21716cdcec7SMiao Xie atomic_inc(&node->refs); 21816cdcec7SMiao Xie out: 21916cdcec7SMiao Xie spin_unlock(&delayed_root->lock); 22016cdcec7SMiao Xie 22116cdcec7SMiao Xie return node; 22216cdcec7SMiao Xie } 22316cdcec7SMiao Xie 22448a3b636SEric Sandeen static struct btrfs_delayed_node *btrfs_next_delayed_node( 22516cdcec7SMiao Xie struct btrfs_delayed_node *node) 22616cdcec7SMiao Xie { 22716cdcec7SMiao Xie struct btrfs_delayed_root *delayed_root; 22816cdcec7SMiao Xie struct list_head *p; 22916cdcec7SMiao Xie struct btrfs_delayed_node *next = NULL; 23016cdcec7SMiao Xie 23116cdcec7SMiao Xie delayed_root = node->root->fs_info->delayed_root; 23216cdcec7SMiao Xie spin_lock(&delayed_root->lock); 2337cf35d91SMiao Xie if (!test_bit(BTRFS_DELAYED_NODE_IN_LIST, &node->flags)) { 2347cf35d91SMiao Xie /* not in the list */ 23516cdcec7SMiao Xie if (list_empty(&delayed_root->node_list)) 23616cdcec7SMiao Xie goto out; 23716cdcec7SMiao Xie p = delayed_root->node_list.next; 23816cdcec7SMiao Xie } else if (list_is_last(&node->n_list, &delayed_root->node_list)) 23916cdcec7SMiao Xie goto out; 24016cdcec7SMiao Xie else 24116cdcec7SMiao Xie p = node->n_list.next; 24216cdcec7SMiao Xie 24316cdcec7SMiao Xie next = list_entry(p, struct btrfs_delayed_node, n_list); 24416cdcec7SMiao Xie atomic_inc(&next->refs); 24516cdcec7SMiao Xie out: 24616cdcec7SMiao Xie spin_unlock(&delayed_root->lock); 24716cdcec7SMiao Xie 24816cdcec7SMiao Xie return next; 24916cdcec7SMiao Xie } 25016cdcec7SMiao Xie 25116cdcec7SMiao Xie static void __btrfs_release_delayed_node( 25216cdcec7SMiao Xie struct btrfs_delayed_node *delayed_node, 25316cdcec7SMiao Xie int mod) 25416cdcec7SMiao Xie { 25516cdcec7SMiao Xie struct btrfs_delayed_root *delayed_root; 25616cdcec7SMiao Xie 25716cdcec7SMiao Xie if (!delayed_node) 25816cdcec7SMiao Xie return; 25916cdcec7SMiao Xie 26016cdcec7SMiao Xie delayed_root = delayed_node->root->fs_info->delayed_root; 26116cdcec7SMiao Xie 26216cdcec7SMiao Xie mutex_lock(&delayed_node->mutex); 26316cdcec7SMiao Xie if (delayed_node->count) 26416cdcec7SMiao Xie btrfs_queue_delayed_node(delayed_root, delayed_node, mod); 26516cdcec7SMiao Xie else 26616cdcec7SMiao Xie btrfs_dequeue_delayed_node(delayed_root, delayed_node); 26716cdcec7SMiao Xie mutex_unlock(&delayed_node->mutex); 26816cdcec7SMiao Xie 26916cdcec7SMiao Xie if (atomic_dec_and_test(&delayed_node->refs)) { 27096493031SJeff Mahoney bool free = false; 27116cdcec7SMiao Xie struct btrfs_root *root = delayed_node->root; 27216cdcec7SMiao Xie spin_lock(&root->inode_lock); 27316cdcec7SMiao Xie if (atomic_read(&delayed_node->refs) == 0) { 27416cdcec7SMiao Xie radix_tree_delete(&root->delayed_nodes_tree, 27516cdcec7SMiao Xie delayed_node->inode_id); 27696493031SJeff Mahoney free = true; 27716cdcec7SMiao Xie } 27816cdcec7SMiao Xie spin_unlock(&root->inode_lock); 27996493031SJeff Mahoney if (free) 28096493031SJeff Mahoney kmem_cache_free(delayed_node_cache, delayed_node); 28116cdcec7SMiao Xie } 28216cdcec7SMiao Xie } 28316cdcec7SMiao Xie 28416cdcec7SMiao Xie static inline void btrfs_release_delayed_node(struct btrfs_delayed_node *node) 28516cdcec7SMiao Xie { 28616cdcec7SMiao Xie __btrfs_release_delayed_node(node, 0); 28716cdcec7SMiao Xie } 28816cdcec7SMiao Xie 28948a3b636SEric Sandeen static struct btrfs_delayed_node *btrfs_first_prepared_delayed_node( 29016cdcec7SMiao Xie struct btrfs_delayed_root *delayed_root) 29116cdcec7SMiao Xie { 29216cdcec7SMiao Xie struct list_head *p; 29316cdcec7SMiao Xie struct btrfs_delayed_node *node = NULL; 29416cdcec7SMiao Xie 29516cdcec7SMiao Xie spin_lock(&delayed_root->lock); 29616cdcec7SMiao Xie if (list_empty(&delayed_root->prepare_list)) 29716cdcec7SMiao Xie goto out; 29816cdcec7SMiao Xie 29916cdcec7SMiao Xie p = delayed_root->prepare_list.next; 30016cdcec7SMiao Xie list_del_init(p); 30116cdcec7SMiao Xie node = list_entry(p, struct btrfs_delayed_node, p_list); 30216cdcec7SMiao Xie atomic_inc(&node->refs); 30316cdcec7SMiao Xie out: 30416cdcec7SMiao Xie spin_unlock(&delayed_root->lock); 30516cdcec7SMiao Xie 30616cdcec7SMiao Xie return node; 30716cdcec7SMiao Xie } 30816cdcec7SMiao Xie 30916cdcec7SMiao Xie static inline void btrfs_release_prepared_delayed_node( 31016cdcec7SMiao Xie struct btrfs_delayed_node *node) 31116cdcec7SMiao Xie { 31216cdcec7SMiao Xie __btrfs_release_delayed_node(node, 1); 31316cdcec7SMiao Xie } 31416cdcec7SMiao Xie 31548a3b636SEric Sandeen static struct btrfs_delayed_item *btrfs_alloc_delayed_item(u32 data_len) 31616cdcec7SMiao Xie { 31716cdcec7SMiao Xie struct btrfs_delayed_item *item; 31816cdcec7SMiao Xie item = kmalloc(sizeof(*item) + data_len, GFP_NOFS); 31916cdcec7SMiao Xie if (item) { 32016cdcec7SMiao Xie item->data_len = data_len; 32116cdcec7SMiao Xie item->ins_or_del = 0; 32216cdcec7SMiao Xie item->bytes_reserved = 0; 32316cdcec7SMiao Xie item->delayed_node = NULL; 32416cdcec7SMiao Xie atomic_set(&item->refs, 1); 32516cdcec7SMiao Xie } 32616cdcec7SMiao Xie return item; 32716cdcec7SMiao Xie } 32816cdcec7SMiao Xie 32916cdcec7SMiao Xie /* 33016cdcec7SMiao Xie * __btrfs_lookup_delayed_item - look up the delayed item by key 33116cdcec7SMiao Xie * @delayed_node: pointer to the delayed node 33216cdcec7SMiao Xie * @key: the key to look up 33316cdcec7SMiao Xie * @prev: used to store the prev item if the right item isn't found 33416cdcec7SMiao Xie * @next: used to store the next item if the right item isn't found 33516cdcec7SMiao Xie * 33616cdcec7SMiao Xie * Note: if we don't find the right item, we will return the prev item and 33716cdcec7SMiao Xie * the next item. 33816cdcec7SMiao Xie */ 33916cdcec7SMiao Xie static struct btrfs_delayed_item *__btrfs_lookup_delayed_item( 34016cdcec7SMiao Xie struct rb_root *root, 34116cdcec7SMiao Xie struct btrfs_key *key, 34216cdcec7SMiao Xie struct btrfs_delayed_item **prev, 34316cdcec7SMiao Xie struct btrfs_delayed_item **next) 34416cdcec7SMiao Xie { 34516cdcec7SMiao Xie struct rb_node *node, *prev_node = NULL; 34616cdcec7SMiao Xie struct btrfs_delayed_item *delayed_item = NULL; 34716cdcec7SMiao Xie int ret = 0; 34816cdcec7SMiao Xie 34916cdcec7SMiao Xie node = root->rb_node; 35016cdcec7SMiao Xie 35116cdcec7SMiao Xie while (node) { 35216cdcec7SMiao Xie delayed_item = rb_entry(node, struct btrfs_delayed_item, 35316cdcec7SMiao Xie rb_node); 35416cdcec7SMiao Xie prev_node = node; 35516cdcec7SMiao Xie ret = btrfs_comp_cpu_keys(&delayed_item->key, key); 35616cdcec7SMiao Xie if (ret < 0) 35716cdcec7SMiao Xie node = node->rb_right; 35816cdcec7SMiao Xie else if (ret > 0) 35916cdcec7SMiao Xie node = node->rb_left; 36016cdcec7SMiao Xie else 36116cdcec7SMiao Xie return delayed_item; 36216cdcec7SMiao Xie } 36316cdcec7SMiao Xie 36416cdcec7SMiao Xie if (prev) { 36516cdcec7SMiao Xie if (!prev_node) 36616cdcec7SMiao Xie *prev = NULL; 36716cdcec7SMiao Xie else if (ret < 0) 36816cdcec7SMiao Xie *prev = delayed_item; 36916cdcec7SMiao Xie else if ((node = rb_prev(prev_node)) != NULL) { 37016cdcec7SMiao Xie *prev = rb_entry(node, struct btrfs_delayed_item, 37116cdcec7SMiao Xie rb_node); 37216cdcec7SMiao Xie } else 37316cdcec7SMiao Xie *prev = NULL; 37416cdcec7SMiao Xie } 37516cdcec7SMiao Xie 37616cdcec7SMiao Xie if (next) { 37716cdcec7SMiao Xie if (!prev_node) 37816cdcec7SMiao Xie *next = NULL; 37916cdcec7SMiao Xie else if (ret > 0) 38016cdcec7SMiao Xie *next = delayed_item; 38116cdcec7SMiao Xie else if ((node = rb_next(prev_node)) != NULL) { 38216cdcec7SMiao Xie *next = rb_entry(node, struct btrfs_delayed_item, 38316cdcec7SMiao Xie rb_node); 38416cdcec7SMiao Xie } else 38516cdcec7SMiao Xie *next = NULL; 38616cdcec7SMiao Xie } 38716cdcec7SMiao Xie return NULL; 38816cdcec7SMiao Xie } 38916cdcec7SMiao Xie 39048a3b636SEric Sandeen static struct btrfs_delayed_item *__btrfs_lookup_delayed_insertion_item( 39116cdcec7SMiao Xie struct btrfs_delayed_node *delayed_node, 39216cdcec7SMiao Xie struct btrfs_key *key) 39316cdcec7SMiao Xie { 39416cdcec7SMiao Xie struct btrfs_delayed_item *item; 39516cdcec7SMiao Xie 39616cdcec7SMiao Xie item = __btrfs_lookup_delayed_item(&delayed_node->ins_root, key, 39716cdcec7SMiao Xie NULL, NULL); 39816cdcec7SMiao Xie return item; 39916cdcec7SMiao Xie } 40016cdcec7SMiao Xie 40116cdcec7SMiao Xie static int __btrfs_add_delayed_item(struct btrfs_delayed_node *delayed_node, 40216cdcec7SMiao Xie struct btrfs_delayed_item *ins, 40316cdcec7SMiao Xie int action) 40416cdcec7SMiao Xie { 40516cdcec7SMiao Xie struct rb_node **p, *node; 40616cdcec7SMiao Xie struct rb_node *parent_node = NULL; 40716cdcec7SMiao Xie struct rb_root *root; 40816cdcec7SMiao Xie struct btrfs_delayed_item *item; 40916cdcec7SMiao Xie int cmp; 41016cdcec7SMiao Xie 41116cdcec7SMiao Xie if (action == BTRFS_DELAYED_INSERTION_ITEM) 41216cdcec7SMiao Xie root = &delayed_node->ins_root; 41316cdcec7SMiao Xie else if (action == BTRFS_DELAYED_DELETION_ITEM) 41416cdcec7SMiao Xie root = &delayed_node->del_root; 41516cdcec7SMiao Xie else 41616cdcec7SMiao Xie BUG(); 41716cdcec7SMiao Xie p = &root->rb_node; 41816cdcec7SMiao Xie node = &ins->rb_node; 41916cdcec7SMiao Xie 42016cdcec7SMiao Xie while (*p) { 42116cdcec7SMiao Xie parent_node = *p; 42216cdcec7SMiao Xie item = rb_entry(parent_node, struct btrfs_delayed_item, 42316cdcec7SMiao Xie rb_node); 42416cdcec7SMiao Xie 42516cdcec7SMiao Xie cmp = btrfs_comp_cpu_keys(&item->key, &ins->key); 42616cdcec7SMiao Xie if (cmp < 0) 42716cdcec7SMiao Xie p = &(*p)->rb_right; 42816cdcec7SMiao Xie else if (cmp > 0) 42916cdcec7SMiao Xie p = &(*p)->rb_left; 43016cdcec7SMiao Xie else 43116cdcec7SMiao Xie return -EEXIST; 43216cdcec7SMiao Xie } 43316cdcec7SMiao Xie 43416cdcec7SMiao Xie rb_link_node(node, parent_node, p); 43516cdcec7SMiao Xie rb_insert_color(node, root); 43616cdcec7SMiao Xie ins->delayed_node = delayed_node; 43716cdcec7SMiao Xie ins->ins_or_del = action; 43816cdcec7SMiao Xie 43916cdcec7SMiao Xie if (ins->key.type == BTRFS_DIR_INDEX_KEY && 44016cdcec7SMiao Xie action == BTRFS_DELAYED_INSERTION_ITEM && 44116cdcec7SMiao Xie ins->key.offset >= delayed_node->index_cnt) 44216cdcec7SMiao Xie delayed_node->index_cnt = ins->key.offset + 1; 44316cdcec7SMiao Xie 44416cdcec7SMiao Xie delayed_node->count++; 44516cdcec7SMiao Xie atomic_inc(&delayed_node->root->fs_info->delayed_root->items); 44616cdcec7SMiao Xie return 0; 44716cdcec7SMiao Xie } 44816cdcec7SMiao Xie 44916cdcec7SMiao Xie static int __btrfs_add_delayed_insertion_item(struct btrfs_delayed_node *node, 45016cdcec7SMiao Xie struct btrfs_delayed_item *item) 45116cdcec7SMiao Xie { 45216cdcec7SMiao Xie return __btrfs_add_delayed_item(node, item, 45316cdcec7SMiao Xie BTRFS_DELAYED_INSERTION_ITEM); 45416cdcec7SMiao Xie } 45516cdcec7SMiao Xie 45616cdcec7SMiao Xie static int __btrfs_add_delayed_deletion_item(struct btrfs_delayed_node *node, 45716cdcec7SMiao Xie struct btrfs_delayed_item *item) 45816cdcec7SMiao Xie { 45916cdcec7SMiao Xie return __btrfs_add_delayed_item(node, item, 46016cdcec7SMiao Xie BTRFS_DELAYED_DELETION_ITEM); 46116cdcec7SMiao Xie } 46216cdcec7SMiao Xie 463de3cb945SChris Mason static void finish_one_item(struct btrfs_delayed_root *delayed_root) 464de3cb945SChris Mason { 465de3cb945SChris Mason int seq = atomic_inc_return(&delayed_root->items_seq); 466*ee863954SDavid Sterba 467*ee863954SDavid Sterba /* 468*ee863954SDavid Sterba * atomic_dec_return implies a barrier for waitqueue_active 469*ee863954SDavid Sterba */ 470de3cb945SChris Mason if ((atomic_dec_return(&delayed_root->items) < 471de3cb945SChris Mason BTRFS_DELAYED_BACKGROUND || seq % BTRFS_DELAYED_BATCH == 0) && 472de3cb945SChris Mason waitqueue_active(&delayed_root->wait)) 473de3cb945SChris Mason wake_up(&delayed_root->wait); 474de3cb945SChris Mason } 475de3cb945SChris Mason 47616cdcec7SMiao Xie static void __btrfs_remove_delayed_item(struct btrfs_delayed_item *delayed_item) 47716cdcec7SMiao Xie { 47816cdcec7SMiao Xie struct rb_root *root; 47916cdcec7SMiao Xie struct btrfs_delayed_root *delayed_root; 48016cdcec7SMiao Xie 48116cdcec7SMiao Xie delayed_root = delayed_item->delayed_node->root->fs_info->delayed_root; 48216cdcec7SMiao Xie 48316cdcec7SMiao Xie BUG_ON(!delayed_root); 48416cdcec7SMiao Xie BUG_ON(delayed_item->ins_or_del != BTRFS_DELAYED_DELETION_ITEM && 48516cdcec7SMiao Xie delayed_item->ins_or_del != BTRFS_DELAYED_INSERTION_ITEM); 48616cdcec7SMiao Xie 48716cdcec7SMiao Xie if (delayed_item->ins_or_del == BTRFS_DELAYED_INSERTION_ITEM) 48816cdcec7SMiao Xie root = &delayed_item->delayed_node->ins_root; 48916cdcec7SMiao Xie else 49016cdcec7SMiao Xie root = &delayed_item->delayed_node->del_root; 49116cdcec7SMiao Xie 49216cdcec7SMiao Xie rb_erase(&delayed_item->rb_node, root); 49316cdcec7SMiao Xie delayed_item->delayed_node->count--; 494de3cb945SChris Mason 495de3cb945SChris Mason finish_one_item(delayed_root); 49616cdcec7SMiao Xie } 49716cdcec7SMiao Xie 49816cdcec7SMiao Xie static void btrfs_release_delayed_item(struct btrfs_delayed_item *item) 49916cdcec7SMiao Xie { 50016cdcec7SMiao Xie if (item) { 50116cdcec7SMiao Xie __btrfs_remove_delayed_item(item); 50216cdcec7SMiao Xie if (atomic_dec_and_test(&item->refs)) 50316cdcec7SMiao Xie kfree(item); 50416cdcec7SMiao Xie } 50516cdcec7SMiao Xie } 50616cdcec7SMiao Xie 50748a3b636SEric Sandeen static struct btrfs_delayed_item *__btrfs_first_delayed_insertion_item( 50816cdcec7SMiao Xie struct btrfs_delayed_node *delayed_node) 50916cdcec7SMiao Xie { 51016cdcec7SMiao Xie struct rb_node *p; 51116cdcec7SMiao Xie struct btrfs_delayed_item *item = NULL; 51216cdcec7SMiao Xie 51316cdcec7SMiao Xie p = rb_first(&delayed_node->ins_root); 51416cdcec7SMiao Xie if (p) 51516cdcec7SMiao Xie item = rb_entry(p, struct btrfs_delayed_item, rb_node); 51616cdcec7SMiao Xie 51716cdcec7SMiao Xie return item; 51816cdcec7SMiao Xie } 51916cdcec7SMiao Xie 52048a3b636SEric Sandeen static struct btrfs_delayed_item *__btrfs_first_delayed_deletion_item( 52116cdcec7SMiao Xie struct btrfs_delayed_node *delayed_node) 52216cdcec7SMiao Xie { 52316cdcec7SMiao Xie struct rb_node *p; 52416cdcec7SMiao Xie struct btrfs_delayed_item *item = NULL; 52516cdcec7SMiao Xie 52616cdcec7SMiao Xie p = rb_first(&delayed_node->del_root); 52716cdcec7SMiao Xie if (p) 52816cdcec7SMiao Xie item = rb_entry(p, struct btrfs_delayed_item, rb_node); 52916cdcec7SMiao Xie 53016cdcec7SMiao Xie return item; 53116cdcec7SMiao Xie } 53216cdcec7SMiao Xie 53348a3b636SEric Sandeen static struct btrfs_delayed_item *__btrfs_next_delayed_item( 53416cdcec7SMiao Xie struct btrfs_delayed_item *item) 53516cdcec7SMiao Xie { 53616cdcec7SMiao Xie struct rb_node *p; 53716cdcec7SMiao Xie struct btrfs_delayed_item *next = NULL; 53816cdcec7SMiao Xie 53916cdcec7SMiao Xie p = rb_next(&item->rb_node); 54016cdcec7SMiao Xie if (p) 54116cdcec7SMiao Xie next = rb_entry(p, struct btrfs_delayed_item, rb_node); 54216cdcec7SMiao Xie 54316cdcec7SMiao Xie return next; 54416cdcec7SMiao Xie } 54516cdcec7SMiao Xie 54616cdcec7SMiao Xie static int btrfs_delayed_item_reserve_metadata(struct btrfs_trans_handle *trans, 54716cdcec7SMiao Xie struct btrfs_root *root, 54816cdcec7SMiao Xie struct btrfs_delayed_item *item) 54916cdcec7SMiao Xie { 55016cdcec7SMiao Xie struct btrfs_block_rsv *src_rsv; 55116cdcec7SMiao Xie struct btrfs_block_rsv *dst_rsv; 55216cdcec7SMiao Xie u64 num_bytes; 55316cdcec7SMiao Xie int ret; 55416cdcec7SMiao Xie 55516cdcec7SMiao Xie if (!trans->bytes_reserved) 55616cdcec7SMiao Xie return 0; 55716cdcec7SMiao Xie 55816cdcec7SMiao Xie src_rsv = trans->block_rsv; 5596d668ddaSJosef Bacik dst_rsv = &root->fs_info->delayed_block_rsv; 56016cdcec7SMiao Xie 56116cdcec7SMiao Xie num_bytes = btrfs_calc_trans_metadata_size(root, 1); 56216cdcec7SMiao Xie ret = btrfs_block_rsv_migrate(src_rsv, dst_rsv, num_bytes); 5638c2a3ca2SJosef Bacik if (!ret) { 5648c2a3ca2SJosef Bacik trace_btrfs_space_reservation(root->fs_info, "delayed_item", 5658c2a3ca2SJosef Bacik item->key.objectid, 5668c2a3ca2SJosef Bacik num_bytes, 1); 56716cdcec7SMiao Xie item->bytes_reserved = num_bytes; 5688c2a3ca2SJosef Bacik } 56916cdcec7SMiao Xie 57016cdcec7SMiao Xie return ret; 57116cdcec7SMiao Xie } 57216cdcec7SMiao Xie 57316cdcec7SMiao Xie static void btrfs_delayed_item_release_metadata(struct btrfs_root *root, 57416cdcec7SMiao Xie struct btrfs_delayed_item *item) 57516cdcec7SMiao Xie { 57619fd2949SMiao Xie struct btrfs_block_rsv *rsv; 57719fd2949SMiao Xie 57816cdcec7SMiao Xie if (!item->bytes_reserved) 57916cdcec7SMiao Xie return; 58016cdcec7SMiao Xie 5816d668ddaSJosef Bacik rsv = &root->fs_info->delayed_block_rsv; 5828c2a3ca2SJosef Bacik trace_btrfs_space_reservation(root->fs_info, "delayed_item", 5838c2a3ca2SJosef Bacik item->key.objectid, item->bytes_reserved, 5848c2a3ca2SJosef Bacik 0); 58519fd2949SMiao Xie btrfs_block_rsv_release(root, rsv, 58616cdcec7SMiao Xie item->bytes_reserved); 58716cdcec7SMiao Xie } 58816cdcec7SMiao Xie 58916cdcec7SMiao Xie static int btrfs_delayed_inode_reserve_metadata( 59016cdcec7SMiao Xie struct btrfs_trans_handle *trans, 59116cdcec7SMiao Xie struct btrfs_root *root, 5927fd2ae21SJosef Bacik struct inode *inode, 59316cdcec7SMiao Xie struct btrfs_delayed_node *node) 59416cdcec7SMiao Xie { 59516cdcec7SMiao Xie struct btrfs_block_rsv *src_rsv; 59616cdcec7SMiao Xie struct btrfs_block_rsv *dst_rsv; 59716cdcec7SMiao Xie u64 num_bytes; 59816cdcec7SMiao Xie int ret; 5998c2a3ca2SJosef Bacik bool release = false; 60016cdcec7SMiao Xie 60116cdcec7SMiao Xie src_rsv = trans->block_rsv; 6026d668ddaSJosef Bacik dst_rsv = &root->fs_info->delayed_block_rsv; 60316cdcec7SMiao Xie 60416cdcec7SMiao Xie num_bytes = btrfs_calc_trans_metadata_size(root, 1); 605c06a0e12SJosef Bacik 606c06a0e12SJosef Bacik /* 607c06a0e12SJosef Bacik * btrfs_dirty_inode will update the inode under btrfs_join_transaction 608c06a0e12SJosef Bacik * which doesn't reserve space for speed. This is a problem since we 609c06a0e12SJosef Bacik * still need to reserve space for this update, so try to reserve the 610c06a0e12SJosef Bacik * space. 611c06a0e12SJosef Bacik * 612c06a0e12SJosef Bacik * Now if src_rsv == delalloc_block_rsv we'll let it just steal since 613c06a0e12SJosef Bacik * we're accounted for. 614c06a0e12SJosef Bacik */ 615e755d9abSChris Mason if (!src_rsv || (!trans->bytes_reserved && 61666d8f3ddSMiao Xie src_rsv->type != BTRFS_BLOCK_RSV_DELALLOC)) { 61708e007d2SMiao Xie ret = btrfs_block_rsv_add(root, dst_rsv, num_bytes, 61808e007d2SMiao Xie BTRFS_RESERVE_NO_FLUSH); 619c06a0e12SJosef Bacik /* 620c06a0e12SJosef Bacik * Since we're under a transaction reserve_metadata_bytes could 621c06a0e12SJosef Bacik * try to commit the transaction which will make it return 622c06a0e12SJosef Bacik * EAGAIN to make us stop the transaction we have, so return 623c06a0e12SJosef Bacik * ENOSPC instead so that btrfs_dirty_inode knows what to do. 624c06a0e12SJosef Bacik */ 625c06a0e12SJosef Bacik if (ret == -EAGAIN) 626c06a0e12SJosef Bacik ret = -ENOSPC; 6278c2a3ca2SJosef Bacik if (!ret) { 628c06a0e12SJosef Bacik node->bytes_reserved = num_bytes; 6298c2a3ca2SJosef Bacik trace_btrfs_space_reservation(root->fs_info, 6308c2a3ca2SJosef Bacik "delayed_inode", 6318c2a3ca2SJosef Bacik btrfs_ino(inode), 6328c2a3ca2SJosef Bacik num_bytes, 1); 6338c2a3ca2SJosef Bacik } 634c06a0e12SJosef Bacik return ret; 63566d8f3ddSMiao Xie } else if (src_rsv->type == BTRFS_BLOCK_RSV_DELALLOC) { 6367fd2ae21SJosef Bacik spin_lock(&BTRFS_I(inode)->lock); 63772ac3c0dSJosef Bacik if (test_and_clear_bit(BTRFS_INODE_DELALLOC_META_RESERVED, 63872ac3c0dSJosef Bacik &BTRFS_I(inode)->runtime_flags)) { 6397fd2ae21SJosef Bacik spin_unlock(&BTRFS_I(inode)->lock); 6407fd2ae21SJosef Bacik release = true; 6417fd2ae21SJosef Bacik goto migrate; 642c06a0e12SJosef Bacik } 6437fd2ae21SJosef Bacik spin_unlock(&BTRFS_I(inode)->lock); 6447fd2ae21SJosef Bacik 6457fd2ae21SJosef Bacik /* Ok we didn't have space pre-reserved. This shouldn't happen 6467fd2ae21SJosef Bacik * too often but it can happen if we do delalloc to an existing 6477fd2ae21SJosef Bacik * inode which gets dirtied because of the time update, and then 6487fd2ae21SJosef Bacik * isn't touched again until after the transaction commits and 6497fd2ae21SJosef Bacik * then we try to write out the data. First try to be nice and 6507fd2ae21SJosef Bacik * reserve something strictly for us. If not be a pain and try 6517fd2ae21SJosef Bacik * to steal from the delalloc block rsv. 6527fd2ae21SJosef Bacik */ 65308e007d2SMiao Xie ret = btrfs_block_rsv_add(root, dst_rsv, num_bytes, 65408e007d2SMiao Xie BTRFS_RESERVE_NO_FLUSH); 6557fd2ae21SJosef Bacik if (!ret) 6567fd2ae21SJosef Bacik goto out; 657c06a0e12SJosef Bacik 65816cdcec7SMiao Xie ret = btrfs_block_rsv_migrate(src_rsv, dst_rsv, num_bytes); 659fae7f21cSDulshani Gunawardhana if (!WARN_ON(ret)) 6607fd2ae21SJosef Bacik goto out; 6617fd2ae21SJosef Bacik 6627fd2ae21SJosef Bacik /* 6637fd2ae21SJosef Bacik * Ok this is a problem, let's just steal from the global rsv 6647fd2ae21SJosef Bacik * since this really shouldn't happen that often. 6657fd2ae21SJosef Bacik */ 6667fd2ae21SJosef Bacik ret = btrfs_block_rsv_migrate(&root->fs_info->global_block_rsv, 6677fd2ae21SJosef Bacik dst_rsv, num_bytes); 6687fd2ae21SJosef Bacik goto out; 6697fd2ae21SJosef Bacik } 6707fd2ae21SJosef Bacik 6717fd2ae21SJosef Bacik migrate: 6727fd2ae21SJosef Bacik ret = btrfs_block_rsv_migrate(src_rsv, dst_rsv, num_bytes); 6737fd2ae21SJosef Bacik 6747fd2ae21SJosef Bacik out: 6757fd2ae21SJosef Bacik /* 6767fd2ae21SJosef Bacik * Migrate only takes a reservation, it doesn't touch the size of the 6777fd2ae21SJosef Bacik * block_rsv. This is to simplify people who don't normally have things 6787fd2ae21SJosef Bacik * migrated from their block rsv. If they go to release their 6797fd2ae21SJosef Bacik * reservation, that will decrease the size as well, so if migrate 6807fd2ae21SJosef Bacik * reduced size we'd end up with a negative size. But for the 6817fd2ae21SJosef Bacik * delalloc_meta_reserved stuff we will only know to drop 1 reservation, 6827fd2ae21SJosef Bacik * but we could in fact do this reserve/migrate dance several times 6837fd2ae21SJosef Bacik * between the time we did the original reservation and we'd clean it 6847fd2ae21SJosef Bacik * up. So to take care of this, release the space for the meta 6857fd2ae21SJosef Bacik * reservation here. I think it may be time for a documentation page on 6867fd2ae21SJosef Bacik * how block rsvs. work. 6877fd2ae21SJosef Bacik */ 6888c2a3ca2SJosef Bacik if (!ret) { 6898c2a3ca2SJosef Bacik trace_btrfs_space_reservation(root->fs_info, "delayed_inode", 6908c2a3ca2SJosef Bacik btrfs_ino(inode), num_bytes, 1); 69116cdcec7SMiao Xie node->bytes_reserved = num_bytes; 6928c2a3ca2SJosef Bacik } 69316cdcec7SMiao Xie 6948c2a3ca2SJosef Bacik if (release) { 6958c2a3ca2SJosef Bacik trace_btrfs_space_reservation(root->fs_info, "delalloc", 6968c2a3ca2SJosef Bacik btrfs_ino(inode), num_bytes, 0); 6977fd2ae21SJosef Bacik btrfs_block_rsv_release(root, src_rsv, num_bytes); 6988c2a3ca2SJosef Bacik } 69916cdcec7SMiao Xie 70016cdcec7SMiao Xie return ret; 70116cdcec7SMiao Xie } 70216cdcec7SMiao Xie 70316cdcec7SMiao Xie static void btrfs_delayed_inode_release_metadata(struct btrfs_root *root, 70416cdcec7SMiao Xie struct btrfs_delayed_node *node) 70516cdcec7SMiao Xie { 70616cdcec7SMiao Xie struct btrfs_block_rsv *rsv; 70716cdcec7SMiao Xie 70816cdcec7SMiao Xie if (!node->bytes_reserved) 70916cdcec7SMiao Xie return; 71016cdcec7SMiao Xie 7116d668ddaSJosef Bacik rsv = &root->fs_info->delayed_block_rsv; 7128c2a3ca2SJosef Bacik trace_btrfs_space_reservation(root->fs_info, "delayed_inode", 7138c2a3ca2SJosef Bacik node->inode_id, node->bytes_reserved, 0); 71416cdcec7SMiao Xie btrfs_block_rsv_release(root, rsv, 71516cdcec7SMiao Xie node->bytes_reserved); 71616cdcec7SMiao Xie node->bytes_reserved = 0; 71716cdcec7SMiao Xie } 71816cdcec7SMiao Xie 71916cdcec7SMiao Xie /* 72016cdcec7SMiao Xie * This helper will insert some continuous items into the same leaf according 72116cdcec7SMiao Xie * to the free space of the leaf. 72216cdcec7SMiao Xie */ 723afe5fea7STsutomu Itoh static int btrfs_batch_insert_items(struct btrfs_root *root, 72416cdcec7SMiao Xie struct btrfs_path *path, 72516cdcec7SMiao Xie struct btrfs_delayed_item *item) 72616cdcec7SMiao Xie { 72716cdcec7SMiao Xie struct btrfs_delayed_item *curr, *next; 72816cdcec7SMiao Xie int free_space; 72916cdcec7SMiao Xie int total_data_size = 0, total_size = 0; 73016cdcec7SMiao Xie struct extent_buffer *leaf; 73116cdcec7SMiao Xie char *data_ptr; 73216cdcec7SMiao Xie struct btrfs_key *keys; 73316cdcec7SMiao Xie u32 *data_size; 73416cdcec7SMiao Xie struct list_head head; 73516cdcec7SMiao Xie int slot; 73616cdcec7SMiao Xie int nitems; 73716cdcec7SMiao Xie int i; 73816cdcec7SMiao Xie int ret = 0; 73916cdcec7SMiao Xie 74016cdcec7SMiao Xie BUG_ON(!path->nodes[0]); 74116cdcec7SMiao Xie 74216cdcec7SMiao Xie leaf = path->nodes[0]; 74316cdcec7SMiao Xie free_space = btrfs_leaf_free_space(root, leaf); 74416cdcec7SMiao Xie INIT_LIST_HEAD(&head); 74516cdcec7SMiao Xie 74616cdcec7SMiao Xie next = item; 74717aca1c9SChris Mason nitems = 0; 74816cdcec7SMiao Xie 74916cdcec7SMiao Xie /* 75016cdcec7SMiao Xie * count the number of the continuous items that we can insert in batch 75116cdcec7SMiao Xie */ 75216cdcec7SMiao Xie while (total_size + next->data_len + sizeof(struct btrfs_item) <= 75316cdcec7SMiao Xie free_space) { 75416cdcec7SMiao Xie total_data_size += next->data_len; 75516cdcec7SMiao Xie total_size += next->data_len + sizeof(struct btrfs_item); 75616cdcec7SMiao Xie list_add_tail(&next->tree_list, &head); 75716cdcec7SMiao Xie nitems++; 75816cdcec7SMiao Xie 75916cdcec7SMiao Xie curr = next; 76016cdcec7SMiao Xie next = __btrfs_next_delayed_item(curr); 76116cdcec7SMiao Xie if (!next) 76216cdcec7SMiao Xie break; 76316cdcec7SMiao Xie 76416cdcec7SMiao Xie if (!btrfs_is_continuous_delayed_item(curr, next)) 76516cdcec7SMiao Xie break; 76616cdcec7SMiao Xie } 76716cdcec7SMiao Xie 76816cdcec7SMiao Xie if (!nitems) { 76916cdcec7SMiao Xie ret = 0; 77016cdcec7SMiao Xie goto out; 77116cdcec7SMiao Xie } 77216cdcec7SMiao Xie 77316cdcec7SMiao Xie /* 77416cdcec7SMiao Xie * we need allocate some memory space, but it might cause the task 77516cdcec7SMiao Xie * to sleep, so we set all locked nodes in the path to blocking locks 77616cdcec7SMiao Xie * first. 77716cdcec7SMiao Xie */ 77816cdcec7SMiao Xie btrfs_set_path_blocking(path); 77916cdcec7SMiao Xie 780d9b0d9baSDulshani Gunawardhana keys = kmalloc_array(nitems, sizeof(struct btrfs_key), GFP_NOFS); 78116cdcec7SMiao Xie if (!keys) { 78216cdcec7SMiao Xie ret = -ENOMEM; 78316cdcec7SMiao Xie goto out; 78416cdcec7SMiao Xie } 78516cdcec7SMiao Xie 786d9b0d9baSDulshani Gunawardhana data_size = kmalloc_array(nitems, sizeof(u32), GFP_NOFS); 78716cdcec7SMiao Xie if (!data_size) { 78816cdcec7SMiao Xie ret = -ENOMEM; 78916cdcec7SMiao Xie goto error; 79016cdcec7SMiao Xie } 79116cdcec7SMiao Xie 79216cdcec7SMiao Xie /* get keys of all the delayed items */ 79316cdcec7SMiao Xie i = 0; 79416cdcec7SMiao Xie list_for_each_entry(next, &head, tree_list) { 79516cdcec7SMiao Xie keys[i] = next->key; 79616cdcec7SMiao Xie data_size[i] = next->data_len; 79716cdcec7SMiao Xie i++; 79816cdcec7SMiao Xie } 79916cdcec7SMiao Xie 80016cdcec7SMiao Xie /* reset all the locked nodes in the patch to spinning locks. */ 801bd681513SChris Mason btrfs_clear_path_blocking(path, NULL, 0); 80216cdcec7SMiao Xie 80316cdcec7SMiao Xie /* insert the keys of the items */ 804afe5fea7STsutomu Itoh setup_items_for_insert(root, path, keys, data_size, 80516cdcec7SMiao Xie total_data_size, total_size, nitems); 80616cdcec7SMiao Xie 80716cdcec7SMiao Xie /* insert the dir index items */ 80816cdcec7SMiao Xie slot = path->slots[0]; 80916cdcec7SMiao Xie list_for_each_entry_safe(curr, next, &head, tree_list) { 81016cdcec7SMiao Xie data_ptr = btrfs_item_ptr(leaf, slot, char); 81116cdcec7SMiao Xie write_extent_buffer(leaf, &curr->data, 81216cdcec7SMiao Xie (unsigned long)data_ptr, 81316cdcec7SMiao Xie curr->data_len); 81416cdcec7SMiao Xie slot++; 81516cdcec7SMiao Xie 81616cdcec7SMiao Xie btrfs_delayed_item_release_metadata(root, curr); 81716cdcec7SMiao Xie 81816cdcec7SMiao Xie list_del(&curr->tree_list); 81916cdcec7SMiao Xie btrfs_release_delayed_item(curr); 82016cdcec7SMiao Xie } 82116cdcec7SMiao Xie 82216cdcec7SMiao Xie error: 82316cdcec7SMiao Xie kfree(data_size); 82416cdcec7SMiao Xie kfree(keys); 82516cdcec7SMiao Xie out: 82616cdcec7SMiao Xie return ret; 82716cdcec7SMiao Xie } 82816cdcec7SMiao Xie 82916cdcec7SMiao Xie /* 83016cdcec7SMiao Xie * This helper can just do simple insertion that needn't extend item for new 83116cdcec7SMiao Xie * data, such as directory name index insertion, inode insertion. 83216cdcec7SMiao Xie */ 83316cdcec7SMiao Xie static int btrfs_insert_delayed_item(struct btrfs_trans_handle *trans, 83416cdcec7SMiao Xie struct btrfs_root *root, 83516cdcec7SMiao Xie struct btrfs_path *path, 83616cdcec7SMiao Xie struct btrfs_delayed_item *delayed_item) 83716cdcec7SMiao Xie { 83816cdcec7SMiao Xie struct extent_buffer *leaf; 83916cdcec7SMiao Xie char *ptr; 84016cdcec7SMiao Xie int ret; 84116cdcec7SMiao Xie 84216cdcec7SMiao Xie ret = btrfs_insert_empty_item(trans, root, path, &delayed_item->key, 84316cdcec7SMiao Xie delayed_item->data_len); 84416cdcec7SMiao Xie if (ret < 0 && ret != -EEXIST) 84516cdcec7SMiao Xie return ret; 84616cdcec7SMiao Xie 84716cdcec7SMiao Xie leaf = path->nodes[0]; 84816cdcec7SMiao Xie 84916cdcec7SMiao Xie ptr = btrfs_item_ptr(leaf, path->slots[0], char); 85016cdcec7SMiao Xie 85116cdcec7SMiao Xie write_extent_buffer(leaf, delayed_item->data, (unsigned long)ptr, 85216cdcec7SMiao Xie delayed_item->data_len); 85316cdcec7SMiao Xie btrfs_mark_buffer_dirty(leaf); 85416cdcec7SMiao Xie 85516cdcec7SMiao Xie btrfs_delayed_item_release_metadata(root, delayed_item); 85616cdcec7SMiao Xie return 0; 85716cdcec7SMiao Xie } 85816cdcec7SMiao Xie 85916cdcec7SMiao Xie /* 86016cdcec7SMiao Xie * we insert an item first, then if there are some continuous items, we try 86116cdcec7SMiao Xie * to insert those items into the same leaf. 86216cdcec7SMiao Xie */ 86316cdcec7SMiao Xie static int btrfs_insert_delayed_items(struct btrfs_trans_handle *trans, 86416cdcec7SMiao Xie struct btrfs_path *path, 86516cdcec7SMiao Xie struct btrfs_root *root, 86616cdcec7SMiao Xie struct btrfs_delayed_node *node) 86716cdcec7SMiao Xie { 86816cdcec7SMiao Xie struct btrfs_delayed_item *curr, *prev; 86916cdcec7SMiao Xie int ret = 0; 87016cdcec7SMiao Xie 87116cdcec7SMiao Xie do_again: 87216cdcec7SMiao Xie mutex_lock(&node->mutex); 87316cdcec7SMiao Xie curr = __btrfs_first_delayed_insertion_item(node); 87416cdcec7SMiao Xie if (!curr) 87516cdcec7SMiao Xie goto insert_end; 87616cdcec7SMiao Xie 87716cdcec7SMiao Xie ret = btrfs_insert_delayed_item(trans, root, path, curr); 87816cdcec7SMiao Xie if (ret < 0) { 879945d8962SChris Mason btrfs_release_path(path); 88016cdcec7SMiao Xie goto insert_end; 88116cdcec7SMiao Xie } 88216cdcec7SMiao Xie 88316cdcec7SMiao Xie prev = curr; 88416cdcec7SMiao Xie curr = __btrfs_next_delayed_item(prev); 88516cdcec7SMiao Xie if (curr && btrfs_is_continuous_delayed_item(prev, curr)) { 88616cdcec7SMiao Xie /* insert the continuous items into the same leaf */ 88716cdcec7SMiao Xie path->slots[0]++; 888afe5fea7STsutomu Itoh btrfs_batch_insert_items(root, path, curr); 88916cdcec7SMiao Xie } 89016cdcec7SMiao Xie btrfs_release_delayed_item(prev); 89116cdcec7SMiao Xie btrfs_mark_buffer_dirty(path->nodes[0]); 89216cdcec7SMiao Xie 893945d8962SChris Mason btrfs_release_path(path); 89416cdcec7SMiao Xie mutex_unlock(&node->mutex); 89516cdcec7SMiao Xie goto do_again; 89616cdcec7SMiao Xie 89716cdcec7SMiao Xie insert_end: 89816cdcec7SMiao Xie mutex_unlock(&node->mutex); 89916cdcec7SMiao Xie return ret; 90016cdcec7SMiao Xie } 90116cdcec7SMiao Xie 90216cdcec7SMiao Xie static int btrfs_batch_delete_items(struct btrfs_trans_handle *trans, 90316cdcec7SMiao Xie struct btrfs_root *root, 90416cdcec7SMiao Xie struct btrfs_path *path, 90516cdcec7SMiao Xie struct btrfs_delayed_item *item) 90616cdcec7SMiao Xie { 90716cdcec7SMiao Xie struct btrfs_delayed_item *curr, *next; 90816cdcec7SMiao Xie struct extent_buffer *leaf; 90916cdcec7SMiao Xie struct btrfs_key key; 91016cdcec7SMiao Xie struct list_head head; 91116cdcec7SMiao Xie int nitems, i, last_item; 91216cdcec7SMiao Xie int ret = 0; 91316cdcec7SMiao Xie 91416cdcec7SMiao Xie BUG_ON(!path->nodes[0]); 91516cdcec7SMiao Xie 91616cdcec7SMiao Xie leaf = path->nodes[0]; 91716cdcec7SMiao Xie 91816cdcec7SMiao Xie i = path->slots[0]; 91916cdcec7SMiao Xie last_item = btrfs_header_nritems(leaf) - 1; 92016cdcec7SMiao Xie if (i > last_item) 92116cdcec7SMiao Xie return -ENOENT; /* FIXME: Is errno suitable? */ 92216cdcec7SMiao Xie 92316cdcec7SMiao Xie next = item; 92416cdcec7SMiao Xie INIT_LIST_HEAD(&head); 92516cdcec7SMiao Xie btrfs_item_key_to_cpu(leaf, &key, i); 92616cdcec7SMiao Xie nitems = 0; 92716cdcec7SMiao Xie /* 92816cdcec7SMiao Xie * count the number of the dir index items that we can delete in batch 92916cdcec7SMiao Xie */ 93016cdcec7SMiao Xie while (btrfs_comp_cpu_keys(&next->key, &key) == 0) { 93116cdcec7SMiao Xie list_add_tail(&next->tree_list, &head); 93216cdcec7SMiao Xie nitems++; 93316cdcec7SMiao Xie 93416cdcec7SMiao Xie curr = next; 93516cdcec7SMiao Xie next = __btrfs_next_delayed_item(curr); 93616cdcec7SMiao Xie if (!next) 93716cdcec7SMiao Xie break; 93816cdcec7SMiao Xie 93916cdcec7SMiao Xie if (!btrfs_is_continuous_delayed_item(curr, next)) 94016cdcec7SMiao Xie break; 94116cdcec7SMiao Xie 94216cdcec7SMiao Xie i++; 94316cdcec7SMiao Xie if (i > last_item) 94416cdcec7SMiao Xie break; 94516cdcec7SMiao Xie btrfs_item_key_to_cpu(leaf, &key, i); 94616cdcec7SMiao Xie } 94716cdcec7SMiao Xie 94816cdcec7SMiao Xie if (!nitems) 94916cdcec7SMiao Xie return 0; 95016cdcec7SMiao Xie 95116cdcec7SMiao Xie ret = btrfs_del_items(trans, root, path, path->slots[0], nitems); 95216cdcec7SMiao Xie if (ret) 95316cdcec7SMiao Xie goto out; 95416cdcec7SMiao Xie 95516cdcec7SMiao Xie list_for_each_entry_safe(curr, next, &head, tree_list) { 95616cdcec7SMiao Xie btrfs_delayed_item_release_metadata(root, curr); 95716cdcec7SMiao Xie list_del(&curr->tree_list); 95816cdcec7SMiao Xie btrfs_release_delayed_item(curr); 95916cdcec7SMiao Xie } 96016cdcec7SMiao Xie 96116cdcec7SMiao Xie out: 96216cdcec7SMiao Xie return ret; 96316cdcec7SMiao Xie } 96416cdcec7SMiao Xie 96516cdcec7SMiao Xie static int btrfs_delete_delayed_items(struct btrfs_trans_handle *trans, 96616cdcec7SMiao Xie struct btrfs_path *path, 96716cdcec7SMiao Xie struct btrfs_root *root, 96816cdcec7SMiao Xie struct btrfs_delayed_node *node) 96916cdcec7SMiao Xie { 97016cdcec7SMiao Xie struct btrfs_delayed_item *curr, *prev; 97116cdcec7SMiao Xie int ret = 0; 97216cdcec7SMiao Xie 97316cdcec7SMiao Xie do_again: 97416cdcec7SMiao Xie mutex_lock(&node->mutex); 97516cdcec7SMiao Xie curr = __btrfs_first_delayed_deletion_item(node); 97616cdcec7SMiao Xie if (!curr) 97716cdcec7SMiao Xie goto delete_fail; 97816cdcec7SMiao Xie 97916cdcec7SMiao Xie ret = btrfs_search_slot(trans, root, &curr->key, path, -1, 1); 98016cdcec7SMiao Xie if (ret < 0) 98116cdcec7SMiao Xie goto delete_fail; 98216cdcec7SMiao Xie else if (ret > 0) { 98316cdcec7SMiao Xie /* 98416cdcec7SMiao Xie * can't find the item which the node points to, so this node 98516cdcec7SMiao Xie * is invalid, just drop it. 98616cdcec7SMiao Xie */ 98716cdcec7SMiao Xie prev = curr; 98816cdcec7SMiao Xie curr = __btrfs_next_delayed_item(prev); 98916cdcec7SMiao Xie btrfs_release_delayed_item(prev); 99016cdcec7SMiao Xie ret = 0; 991945d8962SChris Mason btrfs_release_path(path); 99262095265SFengguang Wu if (curr) { 99362095265SFengguang Wu mutex_unlock(&node->mutex); 99416cdcec7SMiao Xie goto do_again; 99562095265SFengguang Wu } else 99616cdcec7SMiao Xie goto delete_fail; 99716cdcec7SMiao Xie } 99816cdcec7SMiao Xie 99916cdcec7SMiao Xie btrfs_batch_delete_items(trans, root, path, curr); 1000945d8962SChris Mason btrfs_release_path(path); 100116cdcec7SMiao Xie mutex_unlock(&node->mutex); 100216cdcec7SMiao Xie goto do_again; 100316cdcec7SMiao Xie 100416cdcec7SMiao Xie delete_fail: 1005945d8962SChris Mason btrfs_release_path(path); 100616cdcec7SMiao Xie mutex_unlock(&node->mutex); 100716cdcec7SMiao Xie return ret; 100816cdcec7SMiao Xie } 100916cdcec7SMiao Xie 101016cdcec7SMiao Xie static void btrfs_release_delayed_inode(struct btrfs_delayed_node *delayed_node) 101116cdcec7SMiao Xie { 101216cdcec7SMiao Xie struct btrfs_delayed_root *delayed_root; 101316cdcec7SMiao Xie 10147cf35d91SMiao Xie if (delayed_node && 10157cf35d91SMiao Xie test_bit(BTRFS_DELAYED_NODE_INODE_DIRTY, &delayed_node->flags)) { 101616cdcec7SMiao Xie BUG_ON(!delayed_node->root); 10177cf35d91SMiao Xie clear_bit(BTRFS_DELAYED_NODE_INODE_DIRTY, &delayed_node->flags); 101816cdcec7SMiao Xie delayed_node->count--; 101916cdcec7SMiao Xie 102016cdcec7SMiao Xie delayed_root = delayed_node->root->fs_info->delayed_root; 1021de3cb945SChris Mason finish_one_item(delayed_root); 102216cdcec7SMiao Xie } 102316cdcec7SMiao Xie } 102416cdcec7SMiao Xie 102567de1176SMiao Xie static void btrfs_release_delayed_iref(struct btrfs_delayed_node *delayed_node) 102667de1176SMiao Xie { 102767de1176SMiao Xie struct btrfs_delayed_root *delayed_root; 102867de1176SMiao Xie 102967de1176SMiao Xie ASSERT(delayed_node->root); 103067de1176SMiao Xie clear_bit(BTRFS_DELAYED_NODE_DEL_IREF, &delayed_node->flags); 103167de1176SMiao Xie delayed_node->count--; 103267de1176SMiao Xie 103367de1176SMiao Xie delayed_root = delayed_node->root->fs_info->delayed_root; 103467de1176SMiao Xie finish_one_item(delayed_root); 103567de1176SMiao Xie } 103667de1176SMiao Xie 10370e8c36a9SMiao Xie static int __btrfs_update_delayed_inode(struct btrfs_trans_handle *trans, 103816cdcec7SMiao Xie struct btrfs_root *root, 103916cdcec7SMiao Xie struct btrfs_path *path, 104016cdcec7SMiao Xie struct btrfs_delayed_node *node) 104116cdcec7SMiao Xie { 104216cdcec7SMiao Xie struct btrfs_key key; 104316cdcec7SMiao Xie struct btrfs_inode_item *inode_item; 104416cdcec7SMiao Xie struct extent_buffer *leaf; 104567de1176SMiao Xie int mod; 104616cdcec7SMiao Xie int ret; 104716cdcec7SMiao Xie 104816cdcec7SMiao Xie key.objectid = node->inode_id; 1049962a298fSDavid Sterba key.type = BTRFS_INODE_ITEM_KEY; 105016cdcec7SMiao Xie key.offset = 0; 10510e8c36a9SMiao Xie 105267de1176SMiao Xie if (test_bit(BTRFS_DELAYED_NODE_DEL_IREF, &node->flags)) 105367de1176SMiao Xie mod = -1; 105467de1176SMiao Xie else 105567de1176SMiao Xie mod = 1; 105667de1176SMiao Xie 105767de1176SMiao Xie ret = btrfs_lookup_inode(trans, root, path, &key, mod); 105816cdcec7SMiao Xie if (ret > 0) { 1059945d8962SChris Mason btrfs_release_path(path); 106016cdcec7SMiao Xie return -ENOENT; 106116cdcec7SMiao Xie } else if (ret < 0) { 106216cdcec7SMiao Xie return ret; 106316cdcec7SMiao Xie } 106416cdcec7SMiao Xie 106516cdcec7SMiao Xie leaf = path->nodes[0]; 106616cdcec7SMiao Xie inode_item = btrfs_item_ptr(leaf, path->slots[0], 106716cdcec7SMiao Xie struct btrfs_inode_item); 106816cdcec7SMiao Xie write_extent_buffer(leaf, &node->inode_item, (unsigned long)inode_item, 106916cdcec7SMiao Xie sizeof(struct btrfs_inode_item)); 107016cdcec7SMiao Xie btrfs_mark_buffer_dirty(leaf); 107116cdcec7SMiao Xie 107267de1176SMiao Xie if (!test_bit(BTRFS_DELAYED_NODE_DEL_IREF, &node->flags)) 107367de1176SMiao Xie goto no_iref; 107467de1176SMiao Xie 107567de1176SMiao Xie path->slots[0]++; 107667de1176SMiao Xie if (path->slots[0] >= btrfs_header_nritems(leaf)) 107767de1176SMiao Xie goto search; 107867de1176SMiao Xie again: 107967de1176SMiao Xie btrfs_item_key_to_cpu(leaf, &key, path->slots[0]); 108067de1176SMiao Xie if (key.objectid != node->inode_id) 108167de1176SMiao Xie goto out; 108267de1176SMiao Xie 108367de1176SMiao Xie if (key.type != BTRFS_INODE_REF_KEY && 108467de1176SMiao Xie key.type != BTRFS_INODE_EXTREF_KEY) 108567de1176SMiao Xie goto out; 108667de1176SMiao Xie 108767de1176SMiao Xie /* 108867de1176SMiao Xie * Delayed iref deletion is for the inode who has only one link, 108967de1176SMiao Xie * so there is only one iref. The case that several irefs are 109067de1176SMiao Xie * in the same item doesn't exist. 109167de1176SMiao Xie */ 109267de1176SMiao Xie btrfs_del_item(trans, root, path); 109367de1176SMiao Xie out: 109467de1176SMiao Xie btrfs_release_delayed_iref(node); 109567de1176SMiao Xie no_iref: 109667de1176SMiao Xie btrfs_release_path(path); 109767de1176SMiao Xie err_out: 109816cdcec7SMiao Xie btrfs_delayed_inode_release_metadata(root, node); 109916cdcec7SMiao Xie btrfs_release_delayed_inode(node); 110016cdcec7SMiao Xie 110167de1176SMiao Xie return ret; 110267de1176SMiao Xie 110367de1176SMiao Xie search: 110467de1176SMiao Xie btrfs_release_path(path); 110567de1176SMiao Xie 1106962a298fSDavid Sterba key.type = BTRFS_INODE_EXTREF_KEY; 110767de1176SMiao Xie key.offset = -1; 110867de1176SMiao Xie ret = btrfs_search_slot(trans, root, &key, path, -1, 1); 110967de1176SMiao Xie if (ret < 0) 111067de1176SMiao Xie goto err_out; 111167de1176SMiao Xie ASSERT(ret); 111267de1176SMiao Xie 111367de1176SMiao Xie ret = 0; 111467de1176SMiao Xie leaf = path->nodes[0]; 111567de1176SMiao Xie path->slots[0]--; 111667de1176SMiao Xie goto again; 111716cdcec7SMiao Xie } 111816cdcec7SMiao Xie 11190e8c36a9SMiao Xie static inline int btrfs_update_delayed_inode(struct btrfs_trans_handle *trans, 11200e8c36a9SMiao Xie struct btrfs_root *root, 11210e8c36a9SMiao Xie struct btrfs_path *path, 11220e8c36a9SMiao Xie struct btrfs_delayed_node *node) 11230e8c36a9SMiao Xie { 11240e8c36a9SMiao Xie int ret; 11250e8c36a9SMiao Xie 11260e8c36a9SMiao Xie mutex_lock(&node->mutex); 11277cf35d91SMiao Xie if (!test_bit(BTRFS_DELAYED_NODE_INODE_DIRTY, &node->flags)) { 11280e8c36a9SMiao Xie mutex_unlock(&node->mutex); 11290e8c36a9SMiao Xie return 0; 11300e8c36a9SMiao Xie } 11310e8c36a9SMiao Xie 11320e8c36a9SMiao Xie ret = __btrfs_update_delayed_inode(trans, root, path, node); 11330e8c36a9SMiao Xie mutex_unlock(&node->mutex); 11340e8c36a9SMiao Xie return ret; 11350e8c36a9SMiao Xie } 11360e8c36a9SMiao Xie 11374ea41ce0SMiao Xie static inline int 11384ea41ce0SMiao Xie __btrfs_commit_inode_delayed_items(struct btrfs_trans_handle *trans, 11394ea41ce0SMiao Xie struct btrfs_path *path, 11404ea41ce0SMiao Xie struct btrfs_delayed_node *node) 11414ea41ce0SMiao Xie { 11424ea41ce0SMiao Xie int ret; 11434ea41ce0SMiao Xie 11444ea41ce0SMiao Xie ret = btrfs_insert_delayed_items(trans, path, node->root, node); 11454ea41ce0SMiao Xie if (ret) 11464ea41ce0SMiao Xie return ret; 11474ea41ce0SMiao Xie 11484ea41ce0SMiao Xie ret = btrfs_delete_delayed_items(trans, path, node->root, node); 11494ea41ce0SMiao Xie if (ret) 11504ea41ce0SMiao Xie return ret; 11514ea41ce0SMiao Xie 11524ea41ce0SMiao Xie ret = btrfs_update_delayed_inode(trans, node->root, path, node); 11534ea41ce0SMiao Xie return ret; 11544ea41ce0SMiao Xie } 11554ea41ce0SMiao Xie 115679787eaaSJeff Mahoney /* 115779787eaaSJeff Mahoney * Called when committing the transaction. 115879787eaaSJeff Mahoney * Returns 0 on success. 115979787eaaSJeff Mahoney * Returns < 0 on error and returns with an aborted transaction with any 116079787eaaSJeff Mahoney * outstanding delayed items cleaned up. 116179787eaaSJeff Mahoney */ 116296c3f433SJosef Bacik static int __btrfs_run_delayed_items(struct btrfs_trans_handle *trans, 116396c3f433SJosef Bacik struct btrfs_root *root, int nr) 116416cdcec7SMiao Xie { 116516cdcec7SMiao Xie struct btrfs_delayed_root *delayed_root; 116616cdcec7SMiao Xie struct btrfs_delayed_node *curr_node, *prev_node; 116716cdcec7SMiao Xie struct btrfs_path *path; 116819fd2949SMiao Xie struct btrfs_block_rsv *block_rsv; 116916cdcec7SMiao Xie int ret = 0; 117096c3f433SJosef Bacik bool count = (nr > 0); 117116cdcec7SMiao Xie 117279787eaaSJeff Mahoney if (trans->aborted) 117379787eaaSJeff Mahoney return -EIO; 117479787eaaSJeff Mahoney 117516cdcec7SMiao Xie path = btrfs_alloc_path(); 117616cdcec7SMiao Xie if (!path) 117716cdcec7SMiao Xie return -ENOMEM; 117816cdcec7SMiao Xie path->leave_spinning = 1; 117916cdcec7SMiao Xie 118019fd2949SMiao Xie block_rsv = trans->block_rsv; 11816d668ddaSJosef Bacik trans->block_rsv = &root->fs_info->delayed_block_rsv; 118219fd2949SMiao Xie 118316cdcec7SMiao Xie delayed_root = btrfs_get_delayed_root(root); 118416cdcec7SMiao Xie 118516cdcec7SMiao Xie curr_node = btrfs_first_delayed_node(delayed_root); 118696c3f433SJosef Bacik while (curr_node && (!count || (count && nr--))) { 11874ea41ce0SMiao Xie ret = __btrfs_commit_inode_delayed_items(trans, path, 118816cdcec7SMiao Xie curr_node); 118916cdcec7SMiao Xie if (ret) { 119016cdcec7SMiao Xie btrfs_release_delayed_node(curr_node); 119196c3f433SJosef Bacik curr_node = NULL; 119279787eaaSJeff Mahoney btrfs_abort_transaction(trans, root, ret); 119316cdcec7SMiao Xie break; 119416cdcec7SMiao Xie } 119516cdcec7SMiao Xie 119616cdcec7SMiao Xie prev_node = curr_node; 119716cdcec7SMiao Xie curr_node = btrfs_next_delayed_node(curr_node); 119816cdcec7SMiao Xie btrfs_release_delayed_node(prev_node); 119916cdcec7SMiao Xie } 120016cdcec7SMiao Xie 120196c3f433SJosef Bacik if (curr_node) 120296c3f433SJosef Bacik btrfs_release_delayed_node(curr_node); 120316cdcec7SMiao Xie btrfs_free_path(path); 120419fd2949SMiao Xie trans->block_rsv = block_rsv; 120579787eaaSJeff Mahoney 120616cdcec7SMiao Xie return ret; 120716cdcec7SMiao Xie } 120816cdcec7SMiao Xie 120996c3f433SJosef Bacik int btrfs_run_delayed_items(struct btrfs_trans_handle *trans, 121096c3f433SJosef Bacik struct btrfs_root *root) 121196c3f433SJosef Bacik { 121296c3f433SJosef Bacik return __btrfs_run_delayed_items(trans, root, -1); 121396c3f433SJosef Bacik } 121496c3f433SJosef Bacik 121596c3f433SJosef Bacik int btrfs_run_delayed_items_nr(struct btrfs_trans_handle *trans, 121696c3f433SJosef Bacik struct btrfs_root *root, int nr) 121796c3f433SJosef Bacik { 121896c3f433SJosef Bacik return __btrfs_run_delayed_items(trans, root, nr); 121996c3f433SJosef Bacik } 122096c3f433SJosef Bacik 122116cdcec7SMiao Xie int btrfs_commit_inode_delayed_items(struct btrfs_trans_handle *trans, 122216cdcec7SMiao Xie struct inode *inode) 122316cdcec7SMiao Xie { 122416cdcec7SMiao Xie struct btrfs_delayed_node *delayed_node = btrfs_get_delayed_node(inode); 12254ea41ce0SMiao Xie struct btrfs_path *path; 12264ea41ce0SMiao Xie struct btrfs_block_rsv *block_rsv; 122716cdcec7SMiao Xie int ret; 122816cdcec7SMiao Xie 122916cdcec7SMiao Xie if (!delayed_node) 123016cdcec7SMiao Xie return 0; 123116cdcec7SMiao Xie 123216cdcec7SMiao Xie mutex_lock(&delayed_node->mutex); 123316cdcec7SMiao Xie if (!delayed_node->count) { 123416cdcec7SMiao Xie mutex_unlock(&delayed_node->mutex); 123516cdcec7SMiao Xie btrfs_release_delayed_node(delayed_node); 123616cdcec7SMiao Xie return 0; 123716cdcec7SMiao Xie } 123816cdcec7SMiao Xie mutex_unlock(&delayed_node->mutex); 123916cdcec7SMiao Xie 12404ea41ce0SMiao Xie path = btrfs_alloc_path(); 12413c77bd94SFilipe David Borba Manana if (!path) { 12423c77bd94SFilipe David Borba Manana btrfs_release_delayed_node(delayed_node); 12434ea41ce0SMiao Xie return -ENOMEM; 12443c77bd94SFilipe David Borba Manana } 12454ea41ce0SMiao Xie path->leave_spinning = 1; 12464ea41ce0SMiao Xie 12474ea41ce0SMiao Xie block_rsv = trans->block_rsv; 12484ea41ce0SMiao Xie trans->block_rsv = &delayed_node->root->fs_info->delayed_block_rsv; 12494ea41ce0SMiao Xie 12504ea41ce0SMiao Xie ret = __btrfs_commit_inode_delayed_items(trans, path, delayed_node); 12514ea41ce0SMiao Xie 125216cdcec7SMiao Xie btrfs_release_delayed_node(delayed_node); 12534ea41ce0SMiao Xie btrfs_free_path(path); 12544ea41ce0SMiao Xie trans->block_rsv = block_rsv; 12554ea41ce0SMiao Xie 125616cdcec7SMiao Xie return ret; 125716cdcec7SMiao Xie } 125816cdcec7SMiao Xie 12590e8c36a9SMiao Xie int btrfs_commit_inode_delayed_inode(struct inode *inode) 12600e8c36a9SMiao Xie { 12610e8c36a9SMiao Xie struct btrfs_trans_handle *trans; 12620e8c36a9SMiao Xie struct btrfs_delayed_node *delayed_node = btrfs_get_delayed_node(inode); 12630e8c36a9SMiao Xie struct btrfs_path *path; 12640e8c36a9SMiao Xie struct btrfs_block_rsv *block_rsv; 12650e8c36a9SMiao Xie int ret; 12660e8c36a9SMiao Xie 12670e8c36a9SMiao Xie if (!delayed_node) 12680e8c36a9SMiao Xie return 0; 12690e8c36a9SMiao Xie 12700e8c36a9SMiao Xie mutex_lock(&delayed_node->mutex); 12717cf35d91SMiao Xie if (!test_bit(BTRFS_DELAYED_NODE_INODE_DIRTY, &delayed_node->flags)) { 12720e8c36a9SMiao Xie mutex_unlock(&delayed_node->mutex); 12730e8c36a9SMiao Xie btrfs_release_delayed_node(delayed_node); 12740e8c36a9SMiao Xie return 0; 12750e8c36a9SMiao Xie } 12760e8c36a9SMiao Xie mutex_unlock(&delayed_node->mutex); 12770e8c36a9SMiao Xie 12780e8c36a9SMiao Xie trans = btrfs_join_transaction(delayed_node->root); 12790e8c36a9SMiao Xie if (IS_ERR(trans)) { 12800e8c36a9SMiao Xie ret = PTR_ERR(trans); 12810e8c36a9SMiao Xie goto out; 12820e8c36a9SMiao Xie } 12830e8c36a9SMiao Xie 12840e8c36a9SMiao Xie path = btrfs_alloc_path(); 12850e8c36a9SMiao Xie if (!path) { 12860e8c36a9SMiao Xie ret = -ENOMEM; 12870e8c36a9SMiao Xie goto trans_out; 12880e8c36a9SMiao Xie } 12890e8c36a9SMiao Xie path->leave_spinning = 1; 12900e8c36a9SMiao Xie 12910e8c36a9SMiao Xie block_rsv = trans->block_rsv; 12920e8c36a9SMiao Xie trans->block_rsv = &delayed_node->root->fs_info->delayed_block_rsv; 12930e8c36a9SMiao Xie 12940e8c36a9SMiao Xie mutex_lock(&delayed_node->mutex); 12957cf35d91SMiao Xie if (test_bit(BTRFS_DELAYED_NODE_INODE_DIRTY, &delayed_node->flags)) 12960e8c36a9SMiao Xie ret = __btrfs_update_delayed_inode(trans, delayed_node->root, 12970e8c36a9SMiao Xie path, delayed_node); 12980e8c36a9SMiao Xie else 12990e8c36a9SMiao Xie ret = 0; 13000e8c36a9SMiao Xie mutex_unlock(&delayed_node->mutex); 13010e8c36a9SMiao Xie 13020e8c36a9SMiao Xie btrfs_free_path(path); 13030e8c36a9SMiao Xie trans->block_rsv = block_rsv; 13040e8c36a9SMiao Xie trans_out: 13050e8c36a9SMiao Xie btrfs_end_transaction(trans, delayed_node->root); 13060e8c36a9SMiao Xie btrfs_btree_balance_dirty(delayed_node->root); 13070e8c36a9SMiao Xie out: 13080e8c36a9SMiao Xie btrfs_release_delayed_node(delayed_node); 13090e8c36a9SMiao Xie 13100e8c36a9SMiao Xie return ret; 13110e8c36a9SMiao Xie } 13120e8c36a9SMiao Xie 131316cdcec7SMiao Xie void btrfs_remove_delayed_node(struct inode *inode) 131416cdcec7SMiao Xie { 131516cdcec7SMiao Xie struct btrfs_delayed_node *delayed_node; 131616cdcec7SMiao Xie 131716cdcec7SMiao Xie delayed_node = ACCESS_ONCE(BTRFS_I(inode)->delayed_node); 131816cdcec7SMiao Xie if (!delayed_node) 131916cdcec7SMiao Xie return; 132016cdcec7SMiao Xie 132116cdcec7SMiao Xie BTRFS_I(inode)->delayed_node = NULL; 132216cdcec7SMiao Xie btrfs_release_delayed_node(delayed_node); 132316cdcec7SMiao Xie } 132416cdcec7SMiao Xie 1325de3cb945SChris Mason struct btrfs_async_delayed_work { 1326de3cb945SChris Mason struct btrfs_delayed_root *delayed_root; 1327de3cb945SChris Mason int nr; 1328d458b054SQu Wenruo struct btrfs_work work; 132916cdcec7SMiao Xie }; 133016cdcec7SMiao Xie 1331d458b054SQu Wenruo static void btrfs_async_run_delayed_root(struct btrfs_work *work) 133216cdcec7SMiao Xie { 1333de3cb945SChris Mason struct btrfs_async_delayed_work *async_work; 1334de3cb945SChris Mason struct btrfs_delayed_root *delayed_root; 133516cdcec7SMiao Xie struct btrfs_trans_handle *trans; 133616cdcec7SMiao Xie struct btrfs_path *path; 133716cdcec7SMiao Xie struct btrfs_delayed_node *delayed_node = NULL; 133816cdcec7SMiao Xie struct btrfs_root *root; 133919fd2949SMiao Xie struct btrfs_block_rsv *block_rsv; 1340de3cb945SChris Mason int total_done = 0; 134116cdcec7SMiao Xie 1342de3cb945SChris Mason async_work = container_of(work, struct btrfs_async_delayed_work, work); 1343de3cb945SChris Mason delayed_root = async_work->delayed_root; 134416cdcec7SMiao Xie 134516cdcec7SMiao Xie path = btrfs_alloc_path(); 134616cdcec7SMiao Xie if (!path) 134716cdcec7SMiao Xie goto out; 134816cdcec7SMiao Xie 1349de3cb945SChris Mason again: 1350de3cb945SChris Mason if (atomic_read(&delayed_root->items) < BTRFS_DELAYED_BACKGROUND / 2) 1351de3cb945SChris Mason goto free_path; 1352de3cb945SChris Mason 1353de3cb945SChris Mason delayed_node = btrfs_first_prepared_delayed_node(delayed_root); 1354de3cb945SChris Mason if (!delayed_node) 1355de3cb945SChris Mason goto free_path; 1356de3cb945SChris Mason 1357de3cb945SChris Mason path->leave_spinning = 1; 135816cdcec7SMiao Xie root = delayed_node->root; 135916cdcec7SMiao Xie 1360ff5714ccSChris Mason trans = btrfs_join_transaction(root); 136116cdcec7SMiao Xie if (IS_ERR(trans)) 1362de3cb945SChris Mason goto release_path; 136316cdcec7SMiao Xie 136419fd2949SMiao Xie block_rsv = trans->block_rsv; 13656d668ddaSJosef Bacik trans->block_rsv = &root->fs_info->delayed_block_rsv; 136619fd2949SMiao Xie 13674ea41ce0SMiao Xie __btrfs_commit_inode_delayed_items(trans, path, delayed_node); 136816cdcec7SMiao Xie 136919fd2949SMiao Xie trans->block_rsv = block_rsv; 1370a56dbd89SMiao Xie btrfs_end_transaction(trans, root); 1371b53d3f5dSLiu Bo btrfs_btree_balance_dirty_nodelay(root); 1372de3cb945SChris Mason 1373de3cb945SChris Mason release_path: 1374de3cb945SChris Mason btrfs_release_path(path); 1375de3cb945SChris Mason total_done++; 1376de3cb945SChris Mason 1377de3cb945SChris Mason btrfs_release_prepared_delayed_node(delayed_node); 1378de3cb945SChris Mason if (async_work->nr == 0 || total_done < async_work->nr) 1379de3cb945SChris Mason goto again; 1380de3cb945SChris Mason 138116cdcec7SMiao Xie free_path: 138216cdcec7SMiao Xie btrfs_free_path(path); 138316cdcec7SMiao Xie out: 1384de3cb945SChris Mason wake_up(&delayed_root->wait); 1385de3cb945SChris Mason kfree(async_work); 138616cdcec7SMiao Xie } 1387de3cb945SChris Mason 138816cdcec7SMiao Xie 138916cdcec7SMiao Xie static int btrfs_wq_run_delayed_node(struct btrfs_delayed_root *delayed_root, 1390a585e948SDaniel Dressler struct btrfs_fs_info *fs_info, int nr) 139116cdcec7SMiao Xie { 1392de3cb945SChris Mason struct btrfs_async_delayed_work *async_work; 139316cdcec7SMiao Xie 1394de3cb945SChris Mason if (atomic_read(&delayed_root->items) < BTRFS_DELAYED_BACKGROUND) 139516cdcec7SMiao Xie return 0; 139616cdcec7SMiao Xie 1397de3cb945SChris Mason async_work = kmalloc(sizeof(*async_work), GFP_NOFS); 1398de3cb945SChris Mason if (!async_work) 139916cdcec7SMiao Xie return -ENOMEM; 140016cdcec7SMiao Xie 1401de3cb945SChris Mason async_work->delayed_root = delayed_root; 14029e0af237SLiu Bo btrfs_init_work(&async_work->work, btrfs_delayed_meta_helper, 14039e0af237SLiu Bo btrfs_async_run_delayed_root, NULL, NULL); 1404de3cb945SChris Mason async_work->nr = nr; 140516cdcec7SMiao Xie 1406a585e948SDaniel Dressler btrfs_queue_work(fs_info->delayed_workers, &async_work->work); 140716cdcec7SMiao Xie return 0; 140816cdcec7SMiao Xie } 140916cdcec7SMiao Xie 1410e999376fSChris Mason void btrfs_assert_delayed_root_empty(struct btrfs_root *root) 1411e999376fSChris Mason { 1412e999376fSChris Mason struct btrfs_delayed_root *delayed_root; 1413e999376fSChris Mason delayed_root = btrfs_get_delayed_root(root); 1414e999376fSChris Mason WARN_ON(btrfs_first_delayed_node(delayed_root)); 1415e999376fSChris Mason } 1416e999376fSChris Mason 14170353808cSMiao Xie static int could_end_wait(struct btrfs_delayed_root *delayed_root, int seq) 1418de3cb945SChris Mason { 1419de3cb945SChris Mason int val = atomic_read(&delayed_root->items_seq); 1420de3cb945SChris Mason 14210353808cSMiao Xie if (val < seq || val >= seq + BTRFS_DELAYED_BATCH) 1422de3cb945SChris Mason return 1; 14230353808cSMiao Xie 14240353808cSMiao Xie if (atomic_read(&delayed_root->items) < BTRFS_DELAYED_BACKGROUND) 14250353808cSMiao Xie return 1; 14260353808cSMiao Xie 1427de3cb945SChris Mason return 0; 1428de3cb945SChris Mason } 1429de3cb945SChris Mason 143016cdcec7SMiao Xie void btrfs_balance_delayed_items(struct btrfs_root *root) 143116cdcec7SMiao Xie { 143216cdcec7SMiao Xie struct btrfs_delayed_root *delayed_root; 1433a585e948SDaniel Dressler struct btrfs_fs_info *fs_info = root->fs_info; 143416cdcec7SMiao Xie 143516cdcec7SMiao Xie delayed_root = btrfs_get_delayed_root(root); 143616cdcec7SMiao Xie 143716cdcec7SMiao Xie if (atomic_read(&delayed_root->items) < BTRFS_DELAYED_BACKGROUND) 143816cdcec7SMiao Xie return; 143916cdcec7SMiao Xie 144016cdcec7SMiao Xie if (atomic_read(&delayed_root->items) >= BTRFS_DELAYED_WRITEBACK) { 14410353808cSMiao Xie int seq; 144216cdcec7SMiao Xie int ret; 14430353808cSMiao Xie 14440353808cSMiao Xie seq = atomic_read(&delayed_root->items_seq); 1445de3cb945SChris Mason 1446a585e948SDaniel Dressler ret = btrfs_wq_run_delayed_node(delayed_root, fs_info, 0); 144716cdcec7SMiao Xie if (ret) 144816cdcec7SMiao Xie return; 144916cdcec7SMiao Xie 14500353808cSMiao Xie wait_event_interruptible(delayed_root->wait, 14510353808cSMiao Xie could_end_wait(delayed_root, seq)); 14524dd466d3SMiao Xie return; 145316cdcec7SMiao Xie } 145416cdcec7SMiao Xie 1455a585e948SDaniel Dressler btrfs_wq_run_delayed_node(delayed_root, fs_info, BTRFS_DELAYED_BATCH); 145616cdcec7SMiao Xie } 145716cdcec7SMiao Xie 145879787eaaSJeff Mahoney /* Will return 0 or -ENOMEM */ 145916cdcec7SMiao Xie int btrfs_insert_delayed_dir_index(struct btrfs_trans_handle *trans, 146016cdcec7SMiao Xie struct btrfs_root *root, const char *name, 146116cdcec7SMiao Xie int name_len, struct inode *dir, 146216cdcec7SMiao Xie struct btrfs_disk_key *disk_key, u8 type, 146316cdcec7SMiao Xie u64 index) 146416cdcec7SMiao Xie { 146516cdcec7SMiao Xie struct btrfs_delayed_node *delayed_node; 146616cdcec7SMiao Xie struct btrfs_delayed_item *delayed_item; 146716cdcec7SMiao Xie struct btrfs_dir_item *dir_item; 146816cdcec7SMiao Xie int ret; 146916cdcec7SMiao Xie 147016cdcec7SMiao Xie delayed_node = btrfs_get_or_create_delayed_node(dir); 147116cdcec7SMiao Xie if (IS_ERR(delayed_node)) 147216cdcec7SMiao Xie return PTR_ERR(delayed_node); 147316cdcec7SMiao Xie 147416cdcec7SMiao Xie delayed_item = btrfs_alloc_delayed_item(sizeof(*dir_item) + name_len); 147516cdcec7SMiao Xie if (!delayed_item) { 147616cdcec7SMiao Xie ret = -ENOMEM; 147716cdcec7SMiao Xie goto release_node; 147816cdcec7SMiao Xie } 147916cdcec7SMiao Xie 14800d0ca30fSChris Mason delayed_item->key.objectid = btrfs_ino(dir); 1481962a298fSDavid Sterba delayed_item->key.type = BTRFS_DIR_INDEX_KEY; 148216cdcec7SMiao Xie delayed_item->key.offset = index; 148316cdcec7SMiao Xie 148416cdcec7SMiao Xie dir_item = (struct btrfs_dir_item *)delayed_item->data; 148516cdcec7SMiao Xie dir_item->location = *disk_key; 14863cae210fSQu Wenruo btrfs_set_stack_dir_transid(dir_item, trans->transid); 14873cae210fSQu Wenruo btrfs_set_stack_dir_data_len(dir_item, 0); 14883cae210fSQu Wenruo btrfs_set_stack_dir_name_len(dir_item, name_len); 14893cae210fSQu Wenruo btrfs_set_stack_dir_type(dir_item, type); 149016cdcec7SMiao Xie memcpy((char *)(dir_item + 1), name, name_len); 149116cdcec7SMiao Xie 14928c2a3ca2SJosef Bacik ret = btrfs_delayed_item_reserve_metadata(trans, root, delayed_item); 14938c2a3ca2SJosef Bacik /* 14948c2a3ca2SJosef Bacik * we have reserved enough space when we start a new transaction, 14958c2a3ca2SJosef Bacik * so reserving metadata failure is impossible 14968c2a3ca2SJosef Bacik */ 14978c2a3ca2SJosef Bacik BUG_ON(ret); 14988c2a3ca2SJosef Bacik 14998c2a3ca2SJosef Bacik 150016cdcec7SMiao Xie mutex_lock(&delayed_node->mutex); 150116cdcec7SMiao Xie ret = __btrfs_add_delayed_insertion_item(delayed_node, delayed_item); 150216cdcec7SMiao Xie if (unlikely(ret)) { 1503efe120a0SFrank Holton btrfs_err(root->fs_info, "err add delayed dir index item(name: %.*s) " 1504bdab49d7SFilipe David Borba Manana "into the insertion tree of the delayed node" 1505efe120a0SFrank Holton "(root id: %llu, inode id: %llu, errno: %d)", 1506bdab49d7SFilipe David Borba Manana name_len, name, delayed_node->root->objectid, 1507c1c9ff7cSGeert Uytterhoeven delayed_node->inode_id, ret); 150816cdcec7SMiao Xie BUG(); 150916cdcec7SMiao Xie } 151016cdcec7SMiao Xie mutex_unlock(&delayed_node->mutex); 151116cdcec7SMiao Xie 151216cdcec7SMiao Xie release_node: 151316cdcec7SMiao Xie btrfs_release_delayed_node(delayed_node); 151416cdcec7SMiao Xie return ret; 151516cdcec7SMiao Xie } 151616cdcec7SMiao Xie 151716cdcec7SMiao Xie static int btrfs_delete_delayed_insertion_item(struct btrfs_root *root, 151816cdcec7SMiao Xie struct btrfs_delayed_node *node, 151916cdcec7SMiao Xie struct btrfs_key *key) 152016cdcec7SMiao Xie { 152116cdcec7SMiao Xie struct btrfs_delayed_item *item; 152216cdcec7SMiao Xie 152316cdcec7SMiao Xie mutex_lock(&node->mutex); 152416cdcec7SMiao Xie item = __btrfs_lookup_delayed_insertion_item(node, key); 152516cdcec7SMiao Xie if (!item) { 152616cdcec7SMiao Xie mutex_unlock(&node->mutex); 152716cdcec7SMiao Xie return 1; 152816cdcec7SMiao Xie } 152916cdcec7SMiao Xie 153016cdcec7SMiao Xie btrfs_delayed_item_release_metadata(root, item); 153116cdcec7SMiao Xie btrfs_release_delayed_item(item); 153216cdcec7SMiao Xie mutex_unlock(&node->mutex); 153316cdcec7SMiao Xie return 0; 153416cdcec7SMiao Xie } 153516cdcec7SMiao Xie 153616cdcec7SMiao Xie int btrfs_delete_delayed_dir_index(struct btrfs_trans_handle *trans, 153716cdcec7SMiao Xie struct btrfs_root *root, struct inode *dir, 153816cdcec7SMiao Xie u64 index) 153916cdcec7SMiao Xie { 154016cdcec7SMiao Xie struct btrfs_delayed_node *node; 154116cdcec7SMiao Xie struct btrfs_delayed_item *item; 154216cdcec7SMiao Xie struct btrfs_key item_key; 154316cdcec7SMiao Xie int ret; 154416cdcec7SMiao Xie 154516cdcec7SMiao Xie node = btrfs_get_or_create_delayed_node(dir); 154616cdcec7SMiao Xie if (IS_ERR(node)) 154716cdcec7SMiao Xie return PTR_ERR(node); 154816cdcec7SMiao Xie 15490d0ca30fSChris Mason item_key.objectid = btrfs_ino(dir); 1550962a298fSDavid Sterba item_key.type = BTRFS_DIR_INDEX_KEY; 155116cdcec7SMiao Xie item_key.offset = index; 155216cdcec7SMiao Xie 155316cdcec7SMiao Xie ret = btrfs_delete_delayed_insertion_item(root, node, &item_key); 155416cdcec7SMiao Xie if (!ret) 155516cdcec7SMiao Xie goto end; 155616cdcec7SMiao Xie 155716cdcec7SMiao Xie item = btrfs_alloc_delayed_item(0); 155816cdcec7SMiao Xie if (!item) { 155916cdcec7SMiao Xie ret = -ENOMEM; 156016cdcec7SMiao Xie goto end; 156116cdcec7SMiao Xie } 156216cdcec7SMiao Xie 156316cdcec7SMiao Xie item->key = item_key; 156416cdcec7SMiao Xie 156516cdcec7SMiao Xie ret = btrfs_delayed_item_reserve_metadata(trans, root, item); 156616cdcec7SMiao Xie /* 156716cdcec7SMiao Xie * we have reserved enough space when we start a new transaction, 156816cdcec7SMiao Xie * so reserving metadata failure is impossible. 156916cdcec7SMiao Xie */ 157016cdcec7SMiao Xie BUG_ON(ret); 157116cdcec7SMiao Xie 157216cdcec7SMiao Xie mutex_lock(&node->mutex); 157316cdcec7SMiao Xie ret = __btrfs_add_delayed_deletion_item(node, item); 157416cdcec7SMiao Xie if (unlikely(ret)) { 1575efe120a0SFrank Holton btrfs_err(root->fs_info, "err add delayed dir index item(index: %llu) " 157616cdcec7SMiao Xie "into the deletion tree of the delayed node" 1577efe120a0SFrank Holton "(root id: %llu, inode id: %llu, errno: %d)", 1578c1c9ff7cSGeert Uytterhoeven index, node->root->objectid, node->inode_id, 157916cdcec7SMiao Xie ret); 158016cdcec7SMiao Xie BUG(); 158116cdcec7SMiao Xie } 158216cdcec7SMiao Xie mutex_unlock(&node->mutex); 158316cdcec7SMiao Xie end: 158416cdcec7SMiao Xie btrfs_release_delayed_node(node); 158516cdcec7SMiao Xie return ret; 158616cdcec7SMiao Xie } 158716cdcec7SMiao Xie 158816cdcec7SMiao Xie int btrfs_inode_delayed_dir_index_count(struct inode *inode) 158916cdcec7SMiao Xie { 15902f7e33d4SMiao Xie struct btrfs_delayed_node *delayed_node = btrfs_get_delayed_node(inode); 159116cdcec7SMiao Xie 159216cdcec7SMiao Xie if (!delayed_node) 159316cdcec7SMiao Xie return -ENOENT; 159416cdcec7SMiao Xie 159516cdcec7SMiao Xie /* 159616cdcec7SMiao Xie * Since we have held i_mutex of this directory, it is impossible that 159716cdcec7SMiao Xie * a new directory index is added into the delayed node and index_cnt 159816cdcec7SMiao Xie * is updated now. So we needn't lock the delayed node. 159916cdcec7SMiao Xie */ 16002f7e33d4SMiao Xie if (!delayed_node->index_cnt) { 16012f7e33d4SMiao Xie btrfs_release_delayed_node(delayed_node); 160216cdcec7SMiao Xie return -EINVAL; 16032f7e33d4SMiao Xie } 160416cdcec7SMiao Xie 160516cdcec7SMiao Xie BTRFS_I(inode)->index_cnt = delayed_node->index_cnt; 16062f7e33d4SMiao Xie btrfs_release_delayed_node(delayed_node); 16072f7e33d4SMiao Xie return 0; 160816cdcec7SMiao Xie } 160916cdcec7SMiao Xie 161016cdcec7SMiao Xie void btrfs_get_delayed_items(struct inode *inode, struct list_head *ins_list, 161116cdcec7SMiao Xie struct list_head *del_list) 161216cdcec7SMiao Xie { 161316cdcec7SMiao Xie struct btrfs_delayed_node *delayed_node; 161416cdcec7SMiao Xie struct btrfs_delayed_item *item; 161516cdcec7SMiao Xie 161616cdcec7SMiao Xie delayed_node = btrfs_get_delayed_node(inode); 161716cdcec7SMiao Xie if (!delayed_node) 161816cdcec7SMiao Xie return; 161916cdcec7SMiao Xie 162016cdcec7SMiao Xie mutex_lock(&delayed_node->mutex); 162116cdcec7SMiao Xie item = __btrfs_first_delayed_insertion_item(delayed_node); 162216cdcec7SMiao Xie while (item) { 162316cdcec7SMiao Xie atomic_inc(&item->refs); 162416cdcec7SMiao Xie list_add_tail(&item->readdir_list, ins_list); 162516cdcec7SMiao Xie item = __btrfs_next_delayed_item(item); 162616cdcec7SMiao Xie } 162716cdcec7SMiao Xie 162816cdcec7SMiao Xie item = __btrfs_first_delayed_deletion_item(delayed_node); 162916cdcec7SMiao Xie while (item) { 163016cdcec7SMiao Xie atomic_inc(&item->refs); 163116cdcec7SMiao Xie list_add_tail(&item->readdir_list, del_list); 163216cdcec7SMiao Xie item = __btrfs_next_delayed_item(item); 163316cdcec7SMiao Xie } 163416cdcec7SMiao Xie mutex_unlock(&delayed_node->mutex); 163516cdcec7SMiao Xie /* 163616cdcec7SMiao Xie * This delayed node is still cached in the btrfs inode, so refs 163716cdcec7SMiao Xie * must be > 1 now, and we needn't check it is going to be freed 163816cdcec7SMiao Xie * or not. 163916cdcec7SMiao Xie * 164016cdcec7SMiao Xie * Besides that, this function is used to read dir, we do not 164116cdcec7SMiao Xie * insert/delete delayed items in this period. So we also needn't 164216cdcec7SMiao Xie * requeue or dequeue this delayed node. 164316cdcec7SMiao Xie */ 164416cdcec7SMiao Xie atomic_dec(&delayed_node->refs); 164516cdcec7SMiao Xie } 164616cdcec7SMiao Xie 164716cdcec7SMiao Xie void btrfs_put_delayed_items(struct list_head *ins_list, 164816cdcec7SMiao Xie struct list_head *del_list) 164916cdcec7SMiao Xie { 165016cdcec7SMiao Xie struct btrfs_delayed_item *curr, *next; 165116cdcec7SMiao Xie 165216cdcec7SMiao Xie list_for_each_entry_safe(curr, next, ins_list, readdir_list) { 165316cdcec7SMiao Xie list_del(&curr->readdir_list); 165416cdcec7SMiao Xie if (atomic_dec_and_test(&curr->refs)) 165516cdcec7SMiao Xie kfree(curr); 165616cdcec7SMiao Xie } 165716cdcec7SMiao Xie 165816cdcec7SMiao Xie list_for_each_entry_safe(curr, next, del_list, readdir_list) { 165916cdcec7SMiao Xie list_del(&curr->readdir_list); 166016cdcec7SMiao Xie if (atomic_dec_and_test(&curr->refs)) 166116cdcec7SMiao Xie kfree(curr); 166216cdcec7SMiao Xie } 166316cdcec7SMiao Xie } 166416cdcec7SMiao Xie 166516cdcec7SMiao Xie int btrfs_should_delete_dir_index(struct list_head *del_list, 166616cdcec7SMiao Xie u64 index) 166716cdcec7SMiao Xie { 166816cdcec7SMiao Xie struct btrfs_delayed_item *curr, *next; 166916cdcec7SMiao Xie int ret; 167016cdcec7SMiao Xie 167116cdcec7SMiao Xie if (list_empty(del_list)) 167216cdcec7SMiao Xie return 0; 167316cdcec7SMiao Xie 167416cdcec7SMiao Xie list_for_each_entry_safe(curr, next, del_list, readdir_list) { 167516cdcec7SMiao Xie if (curr->key.offset > index) 167616cdcec7SMiao Xie break; 167716cdcec7SMiao Xie 167816cdcec7SMiao Xie list_del(&curr->readdir_list); 167916cdcec7SMiao Xie ret = (curr->key.offset == index); 168016cdcec7SMiao Xie 168116cdcec7SMiao Xie if (atomic_dec_and_test(&curr->refs)) 168216cdcec7SMiao Xie kfree(curr); 168316cdcec7SMiao Xie 168416cdcec7SMiao Xie if (ret) 168516cdcec7SMiao Xie return 1; 168616cdcec7SMiao Xie else 168716cdcec7SMiao Xie continue; 168816cdcec7SMiao Xie } 168916cdcec7SMiao Xie return 0; 169016cdcec7SMiao Xie } 169116cdcec7SMiao Xie 169216cdcec7SMiao Xie /* 169316cdcec7SMiao Xie * btrfs_readdir_delayed_dir_index - read dir info stored in the delayed tree 169416cdcec7SMiao Xie * 169516cdcec7SMiao Xie */ 16969cdda8d3SAl Viro int btrfs_readdir_delayed_dir_index(struct dir_context *ctx, 169716cdcec7SMiao Xie struct list_head *ins_list) 169816cdcec7SMiao Xie { 169916cdcec7SMiao Xie struct btrfs_dir_item *di; 170016cdcec7SMiao Xie struct btrfs_delayed_item *curr, *next; 170116cdcec7SMiao Xie struct btrfs_key location; 170216cdcec7SMiao Xie char *name; 170316cdcec7SMiao Xie int name_len; 170416cdcec7SMiao Xie int over = 0; 170516cdcec7SMiao Xie unsigned char d_type; 170616cdcec7SMiao Xie 170716cdcec7SMiao Xie if (list_empty(ins_list)) 170816cdcec7SMiao Xie return 0; 170916cdcec7SMiao Xie 171016cdcec7SMiao Xie /* 171116cdcec7SMiao Xie * Changing the data of the delayed item is impossible. So 171216cdcec7SMiao Xie * we needn't lock them. And we have held i_mutex of the 171316cdcec7SMiao Xie * directory, nobody can delete any directory indexes now. 171416cdcec7SMiao Xie */ 171516cdcec7SMiao Xie list_for_each_entry_safe(curr, next, ins_list, readdir_list) { 171616cdcec7SMiao Xie list_del(&curr->readdir_list); 171716cdcec7SMiao Xie 17189cdda8d3SAl Viro if (curr->key.offset < ctx->pos) { 171916cdcec7SMiao Xie if (atomic_dec_and_test(&curr->refs)) 172016cdcec7SMiao Xie kfree(curr); 172116cdcec7SMiao Xie continue; 172216cdcec7SMiao Xie } 172316cdcec7SMiao Xie 17249cdda8d3SAl Viro ctx->pos = curr->key.offset; 172516cdcec7SMiao Xie 172616cdcec7SMiao Xie di = (struct btrfs_dir_item *)curr->data; 172716cdcec7SMiao Xie name = (char *)(di + 1); 17283cae210fSQu Wenruo name_len = btrfs_stack_dir_name_len(di); 172916cdcec7SMiao Xie 173016cdcec7SMiao Xie d_type = btrfs_filetype_table[di->type]; 173116cdcec7SMiao Xie btrfs_disk_key_to_cpu(&location, &di->location); 173216cdcec7SMiao Xie 17339cdda8d3SAl Viro over = !dir_emit(ctx, name, name_len, 173416cdcec7SMiao Xie location.objectid, d_type); 173516cdcec7SMiao Xie 173616cdcec7SMiao Xie if (atomic_dec_and_test(&curr->refs)) 173716cdcec7SMiao Xie kfree(curr); 173816cdcec7SMiao Xie 173916cdcec7SMiao Xie if (over) 174016cdcec7SMiao Xie return 1; 174116cdcec7SMiao Xie } 174216cdcec7SMiao Xie return 0; 174316cdcec7SMiao Xie } 174416cdcec7SMiao Xie 174516cdcec7SMiao Xie static void fill_stack_inode_item(struct btrfs_trans_handle *trans, 174616cdcec7SMiao Xie struct btrfs_inode_item *inode_item, 174716cdcec7SMiao Xie struct inode *inode) 174816cdcec7SMiao Xie { 17492f2f43d3SEric W. Biederman btrfs_set_stack_inode_uid(inode_item, i_uid_read(inode)); 17502f2f43d3SEric W. Biederman btrfs_set_stack_inode_gid(inode_item, i_gid_read(inode)); 175116cdcec7SMiao Xie btrfs_set_stack_inode_size(inode_item, BTRFS_I(inode)->disk_i_size); 175216cdcec7SMiao Xie btrfs_set_stack_inode_mode(inode_item, inode->i_mode); 175316cdcec7SMiao Xie btrfs_set_stack_inode_nlink(inode_item, inode->i_nlink); 175416cdcec7SMiao Xie btrfs_set_stack_inode_nbytes(inode_item, inode_get_bytes(inode)); 175516cdcec7SMiao Xie btrfs_set_stack_inode_generation(inode_item, 175616cdcec7SMiao Xie BTRFS_I(inode)->generation); 17570c4d2d95SJosef Bacik btrfs_set_stack_inode_sequence(inode_item, inode->i_version); 175816cdcec7SMiao Xie btrfs_set_stack_inode_transid(inode_item, trans->transid); 175916cdcec7SMiao Xie btrfs_set_stack_inode_rdev(inode_item, inode->i_rdev); 176016cdcec7SMiao Xie btrfs_set_stack_inode_flags(inode_item, BTRFS_I(inode)->flags); 1761ff5714ccSChris Mason btrfs_set_stack_inode_block_group(inode_item, 0); 176216cdcec7SMiao Xie 1763a937b979SDavid Sterba btrfs_set_stack_timespec_sec(&inode_item->atime, 176416cdcec7SMiao Xie inode->i_atime.tv_sec); 1765a937b979SDavid Sterba btrfs_set_stack_timespec_nsec(&inode_item->atime, 176616cdcec7SMiao Xie inode->i_atime.tv_nsec); 176716cdcec7SMiao Xie 1768a937b979SDavid Sterba btrfs_set_stack_timespec_sec(&inode_item->mtime, 176916cdcec7SMiao Xie inode->i_mtime.tv_sec); 1770a937b979SDavid Sterba btrfs_set_stack_timespec_nsec(&inode_item->mtime, 177116cdcec7SMiao Xie inode->i_mtime.tv_nsec); 177216cdcec7SMiao Xie 1773a937b979SDavid Sterba btrfs_set_stack_timespec_sec(&inode_item->ctime, 177416cdcec7SMiao Xie inode->i_ctime.tv_sec); 1775a937b979SDavid Sterba btrfs_set_stack_timespec_nsec(&inode_item->ctime, 177616cdcec7SMiao Xie inode->i_ctime.tv_nsec); 17779cc97d64Schandan r 17789cc97d64Schandan r btrfs_set_stack_timespec_sec(&inode_item->otime, 17799cc97d64Schandan r BTRFS_I(inode)->i_otime.tv_sec); 17809cc97d64Schandan r btrfs_set_stack_timespec_nsec(&inode_item->otime, 17819cc97d64Schandan r BTRFS_I(inode)->i_otime.tv_nsec); 178216cdcec7SMiao Xie } 178316cdcec7SMiao Xie 17842f7e33d4SMiao Xie int btrfs_fill_inode(struct inode *inode, u32 *rdev) 17852f7e33d4SMiao Xie { 17862f7e33d4SMiao Xie struct btrfs_delayed_node *delayed_node; 17872f7e33d4SMiao Xie struct btrfs_inode_item *inode_item; 17882f7e33d4SMiao Xie 17892f7e33d4SMiao Xie delayed_node = btrfs_get_delayed_node(inode); 17902f7e33d4SMiao Xie if (!delayed_node) 17912f7e33d4SMiao Xie return -ENOENT; 17922f7e33d4SMiao Xie 17932f7e33d4SMiao Xie mutex_lock(&delayed_node->mutex); 17947cf35d91SMiao Xie if (!test_bit(BTRFS_DELAYED_NODE_INODE_DIRTY, &delayed_node->flags)) { 17952f7e33d4SMiao Xie mutex_unlock(&delayed_node->mutex); 17962f7e33d4SMiao Xie btrfs_release_delayed_node(delayed_node); 17972f7e33d4SMiao Xie return -ENOENT; 17982f7e33d4SMiao Xie } 17992f7e33d4SMiao Xie 18002f7e33d4SMiao Xie inode_item = &delayed_node->inode_item; 18012f7e33d4SMiao Xie 18022f2f43d3SEric W. Biederman i_uid_write(inode, btrfs_stack_inode_uid(inode_item)); 18032f2f43d3SEric W. Biederman i_gid_write(inode, btrfs_stack_inode_gid(inode_item)); 18042f7e33d4SMiao Xie btrfs_i_size_write(inode, btrfs_stack_inode_size(inode_item)); 18052f7e33d4SMiao Xie inode->i_mode = btrfs_stack_inode_mode(inode_item); 1806bfe86848SMiklos Szeredi set_nlink(inode, btrfs_stack_inode_nlink(inode_item)); 18072f7e33d4SMiao Xie inode_set_bytes(inode, btrfs_stack_inode_nbytes(inode_item)); 18082f7e33d4SMiao Xie BTRFS_I(inode)->generation = btrfs_stack_inode_generation(inode_item); 18096e17d30bSYang Dongsheng BTRFS_I(inode)->last_trans = btrfs_stack_inode_transid(inode_item); 18106e17d30bSYang Dongsheng 18110c4d2d95SJosef Bacik inode->i_version = btrfs_stack_inode_sequence(inode_item); 18122f7e33d4SMiao Xie inode->i_rdev = 0; 18132f7e33d4SMiao Xie *rdev = btrfs_stack_inode_rdev(inode_item); 18142f7e33d4SMiao Xie BTRFS_I(inode)->flags = btrfs_stack_inode_flags(inode_item); 18152f7e33d4SMiao Xie 1816a937b979SDavid Sterba inode->i_atime.tv_sec = btrfs_stack_timespec_sec(&inode_item->atime); 1817a937b979SDavid Sterba inode->i_atime.tv_nsec = btrfs_stack_timespec_nsec(&inode_item->atime); 18182f7e33d4SMiao Xie 1819a937b979SDavid Sterba inode->i_mtime.tv_sec = btrfs_stack_timespec_sec(&inode_item->mtime); 1820a937b979SDavid Sterba inode->i_mtime.tv_nsec = btrfs_stack_timespec_nsec(&inode_item->mtime); 18212f7e33d4SMiao Xie 1822a937b979SDavid Sterba inode->i_ctime.tv_sec = btrfs_stack_timespec_sec(&inode_item->ctime); 1823a937b979SDavid Sterba inode->i_ctime.tv_nsec = btrfs_stack_timespec_nsec(&inode_item->ctime); 18242f7e33d4SMiao Xie 18259cc97d64Schandan r BTRFS_I(inode)->i_otime.tv_sec = 18269cc97d64Schandan r btrfs_stack_timespec_sec(&inode_item->otime); 18279cc97d64Schandan r BTRFS_I(inode)->i_otime.tv_nsec = 18289cc97d64Schandan r btrfs_stack_timespec_nsec(&inode_item->otime); 18299cc97d64Schandan r 18302f7e33d4SMiao Xie inode->i_generation = BTRFS_I(inode)->generation; 18312f7e33d4SMiao Xie BTRFS_I(inode)->index_cnt = (u64)-1; 18322f7e33d4SMiao Xie 18332f7e33d4SMiao Xie mutex_unlock(&delayed_node->mutex); 18342f7e33d4SMiao Xie btrfs_release_delayed_node(delayed_node); 18352f7e33d4SMiao Xie return 0; 18362f7e33d4SMiao Xie } 18372f7e33d4SMiao Xie 183816cdcec7SMiao Xie int btrfs_delayed_update_inode(struct btrfs_trans_handle *trans, 183916cdcec7SMiao Xie struct btrfs_root *root, struct inode *inode) 184016cdcec7SMiao Xie { 184116cdcec7SMiao Xie struct btrfs_delayed_node *delayed_node; 1842aa0467d8SDavid Sterba int ret = 0; 184316cdcec7SMiao Xie 184416cdcec7SMiao Xie delayed_node = btrfs_get_or_create_delayed_node(inode); 184516cdcec7SMiao Xie if (IS_ERR(delayed_node)) 184616cdcec7SMiao Xie return PTR_ERR(delayed_node); 184716cdcec7SMiao Xie 184816cdcec7SMiao Xie mutex_lock(&delayed_node->mutex); 18497cf35d91SMiao Xie if (test_bit(BTRFS_DELAYED_NODE_INODE_DIRTY, &delayed_node->flags)) { 185016cdcec7SMiao Xie fill_stack_inode_item(trans, &delayed_node->inode_item, inode); 185116cdcec7SMiao Xie goto release_node; 185216cdcec7SMiao Xie } 185316cdcec7SMiao Xie 18547fd2ae21SJosef Bacik ret = btrfs_delayed_inode_reserve_metadata(trans, root, inode, 18557fd2ae21SJosef Bacik delayed_node); 1856c06a0e12SJosef Bacik if (ret) 1857c06a0e12SJosef Bacik goto release_node; 185816cdcec7SMiao Xie 185916cdcec7SMiao Xie fill_stack_inode_item(trans, &delayed_node->inode_item, inode); 18607cf35d91SMiao Xie set_bit(BTRFS_DELAYED_NODE_INODE_DIRTY, &delayed_node->flags); 186116cdcec7SMiao Xie delayed_node->count++; 186216cdcec7SMiao Xie atomic_inc(&root->fs_info->delayed_root->items); 186316cdcec7SMiao Xie release_node: 186416cdcec7SMiao Xie mutex_unlock(&delayed_node->mutex); 186516cdcec7SMiao Xie btrfs_release_delayed_node(delayed_node); 186616cdcec7SMiao Xie return ret; 186716cdcec7SMiao Xie } 186816cdcec7SMiao Xie 186967de1176SMiao Xie int btrfs_delayed_delete_inode_ref(struct inode *inode) 187067de1176SMiao Xie { 187167de1176SMiao Xie struct btrfs_delayed_node *delayed_node; 187267de1176SMiao Xie 18736f896054SChris Mason /* 18746f896054SChris Mason * we don't do delayed inode updates during log recovery because it 18756f896054SChris Mason * leads to enospc problems. This means we also can't do 18766f896054SChris Mason * delayed inode refs 18776f896054SChris Mason */ 18786f896054SChris Mason if (BTRFS_I(inode)->root->fs_info->log_root_recovering) 18796f896054SChris Mason return -EAGAIN; 18806f896054SChris Mason 188167de1176SMiao Xie delayed_node = btrfs_get_or_create_delayed_node(inode); 188267de1176SMiao Xie if (IS_ERR(delayed_node)) 188367de1176SMiao Xie return PTR_ERR(delayed_node); 188467de1176SMiao Xie 188567de1176SMiao Xie /* 188667de1176SMiao Xie * We don't reserve space for inode ref deletion is because: 188767de1176SMiao Xie * - We ONLY do async inode ref deletion for the inode who has only 188867de1176SMiao Xie * one link(i_nlink == 1), it means there is only one inode ref. 188967de1176SMiao Xie * And in most case, the inode ref and the inode item are in the 189067de1176SMiao Xie * same leaf, and we will deal with them at the same time. 189167de1176SMiao Xie * Since we are sure we will reserve the space for the inode item, 189267de1176SMiao Xie * it is unnecessary to reserve space for inode ref deletion. 189367de1176SMiao Xie * - If the inode ref and the inode item are not in the same leaf, 189467de1176SMiao Xie * We also needn't worry about enospc problem, because we reserve 189567de1176SMiao Xie * much more space for the inode update than it needs. 189667de1176SMiao Xie * - At the worst, we can steal some space from the global reservation. 189767de1176SMiao Xie * It is very rare. 189867de1176SMiao Xie */ 189967de1176SMiao Xie mutex_lock(&delayed_node->mutex); 190067de1176SMiao Xie if (test_bit(BTRFS_DELAYED_NODE_DEL_IREF, &delayed_node->flags)) 190167de1176SMiao Xie goto release_node; 190267de1176SMiao Xie 190367de1176SMiao Xie set_bit(BTRFS_DELAYED_NODE_DEL_IREF, &delayed_node->flags); 190467de1176SMiao Xie delayed_node->count++; 190567de1176SMiao Xie atomic_inc(&BTRFS_I(inode)->root->fs_info->delayed_root->items); 190667de1176SMiao Xie release_node: 190767de1176SMiao Xie mutex_unlock(&delayed_node->mutex); 190867de1176SMiao Xie btrfs_release_delayed_node(delayed_node); 190967de1176SMiao Xie return 0; 191067de1176SMiao Xie } 191167de1176SMiao Xie 191216cdcec7SMiao Xie static void __btrfs_kill_delayed_node(struct btrfs_delayed_node *delayed_node) 191316cdcec7SMiao Xie { 191416cdcec7SMiao Xie struct btrfs_root *root = delayed_node->root; 191516cdcec7SMiao Xie struct btrfs_delayed_item *curr_item, *prev_item; 191616cdcec7SMiao Xie 191716cdcec7SMiao Xie mutex_lock(&delayed_node->mutex); 191816cdcec7SMiao Xie curr_item = __btrfs_first_delayed_insertion_item(delayed_node); 191916cdcec7SMiao Xie while (curr_item) { 192016cdcec7SMiao Xie btrfs_delayed_item_release_metadata(root, 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 192616cdcec7SMiao Xie curr_item = __btrfs_first_delayed_deletion_item(delayed_node); 192716cdcec7SMiao Xie while (curr_item) { 192816cdcec7SMiao Xie btrfs_delayed_item_release_metadata(root, curr_item); 192916cdcec7SMiao Xie prev_item = curr_item; 193016cdcec7SMiao Xie curr_item = __btrfs_next_delayed_item(prev_item); 193116cdcec7SMiao Xie btrfs_release_delayed_item(prev_item); 193216cdcec7SMiao Xie } 193316cdcec7SMiao Xie 193467de1176SMiao Xie if (test_bit(BTRFS_DELAYED_NODE_DEL_IREF, &delayed_node->flags)) 193567de1176SMiao Xie btrfs_release_delayed_iref(delayed_node); 193667de1176SMiao Xie 19377cf35d91SMiao Xie if (test_bit(BTRFS_DELAYED_NODE_INODE_DIRTY, &delayed_node->flags)) { 193816cdcec7SMiao Xie btrfs_delayed_inode_release_metadata(root, delayed_node); 193916cdcec7SMiao Xie btrfs_release_delayed_inode(delayed_node); 194016cdcec7SMiao Xie } 194116cdcec7SMiao Xie mutex_unlock(&delayed_node->mutex); 194216cdcec7SMiao Xie } 194316cdcec7SMiao Xie 194416cdcec7SMiao Xie void btrfs_kill_delayed_inode_items(struct inode *inode) 194516cdcec7SMiao Xie { 194616cdcec7SMiao Xie struct btrfs_delayed_node *delayed_node; 194716cdcec7SMiao Xie 194816cdcec7SMiao Xie delayed_node = btrfs_get_delayed_node(inode); 194916cdcec7SMiao Xie if (!delayed_node) 195016cdcec7SMiao Xie return; 195116cdcec7SMiao Xie 195216cdcec7SMiao Xie __btrfs_kill_delayed_node(delayed_node); 195316cdcec7SMiao Xie btrfs_release_delayed_node(delayed_node); 195416cdcec7SMiao Xie } 195516cdcec7SMiao Xie 195616cdcec7SMiao Xie void btrfs_kill_all_delayed_nodes(struct btrfs_root *root) 195716cdcec7SMiao Xie { 195816cdcec7SMiao Xie u64 inode_id = 0; 195916cdcec7SMiao Xie struct btrfs_delayed_node *delayed_nodes[8]; 196016cdcec7SMiao Xie int i, n; 196116cdcec7SMiao Xie 196216cdcec7SMiao Xie while (1) { 196316cdcec7SMiao Xie spin_lock(&root->inode_lock); 196416cdcec7SMiao Xie n = radix_tree_gang_lookup(&root->delayed_nodes_tree, 196516cdcec7SMiao Xie (void **)delayed_nodes, inode_id, 196616cdcec7SMiao Xie ARRAY_SIZE(delayed_nodes)); 196716cdcec7SMiao Xie if (!n) { 196816cdcec7SMiao Xie spin_unlock(&root->inode_lock); 196916cdcec7SMiao Xie break; 197016cdcec7SMiao Xie } 197116cdcec7SMiao Xie 197216cdcec7SMiao Xie inode_id = delayed_nodes[n - 1]->inode_id + 1; 197316cdcec7SMiao Xie 197416cdcec7SMiao Xie for (i = 0; i < n; i++) 197516cdcec7SMiao Xie atomic_inc(&delayed_nodes[i]->refs); 197616cdcec7SMiao Xie spin_unlock(&root->inode_lock); 197716cdcec7SMiao Xie 197816cdcec7SMiao Xie for (i = 0; i < n; i++) { 197916cdcec7SMiao Xie __btrfs_kill_delayed_node(delayed_nodes[i]); 198016cdcec7SMiao Xie btrfs_release_delayed_node(delayed_nodes[i]); 198116cdcec7SMiao Xie } 198216cdcec7SMiao Xie } 198316cdcec7SMiao Xie } 198467cde344SMiao Xie 198567cde344SMiao Xie void btrfs_destroy_delayed_inodes(struct btrfs_root *root) 198667cde344SMiao Xie { 198767cde344SMiao Xie struct btrfs_delayed_root *delayed_root; 198867cde344SMiao Xie struct btrfs_delayed_node *curr_node, *prev_node; 198967cde344SMiao Xie 199067cde344SMiao Xie delayed_root = btrfs_get_delayed_root(root); 199167cde344SMiao Xie 199267cde344SMiao Xie curr_node = btrfs_first_delayed_node(delayed_root); 199367cde344SMiao Xie while (curr_node) { 199467cde344SMiao Xie __btrfs_kill_delayed_node(curr_node); 199567cde344SMiao Xie 199667cde344SMiao Xie prev_node = curr_node; 199767cde344SMiao Xie curr_node = btrfs_next_delayed_node(curr_node); 199867cde344SMiao Xie btrfs_release_delayed_node(prev_node); 199967cde344SMiao Xie } 200067cde344SMiao Xie } 200167cde344SMiao Xie 2002