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Merge branch 'delayed_inode' into inode_numbers

Browse Source 
Conflicts:
	fs/btrfs/inode.c
	fs/btrfs/ioctl.c
	fs/btrfs/transaction.c

Signed-off-by: Chris Mason <chris.mason@oracle.com>
This commit is contained in:
Chris Mason 2011-05-22 07:07:01 -04:00
commit dcc6d07322
16 changed files with 2075 additions and 92 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
fs/btrfs/Makefile
View File

@ -7,4 +7,4 @@ btrfs-y += super.o ctree.o extent-tree.o print-tree.o root-tree.o dir-item.o \
extent_map.o sysfs.o struct-funcs.o xattr.o ordered-data.o \
extent_io.o volumes.o async-thread.o ioctl.o locking.o orphan.o \
export.o tree-log.o acl.o free-space-cache.o zlib.o lzo.o \
compression.o delayed-ref.o relocation.o
compression.o delayed-ref.o relocation.o delayed-inode.o

5
fs/btrfs/btrfs_inode.h
View File

@ -22,6 +22,7 @@
#include "extent_map.h"
#include "extent_io.h"
#include "ordered-data.h"
#include "delayed-inode.h"
/* in memory btrfs inode */
struct btrfs_inode {
@ -158,9 +159,13 @@ struct btrfs_inode {
*/
unsigned force_compress:4;
struct btrfs_delayed_node *delayed_node;
struct inode vfs_inode;
};
extern unsigned char btrfs_filetype_table[];
static inline struct btrfs_inode *BTRFS_I(struct inode *inode)
{
return container_of(inode, struct btrfs_inode, vfs_inode);

14
fs/btrfs/ctree.c
View File

@ -38,11 +38,6 @@ static int balance_node_right(struct btrfs_trans_handle *trans,
struct extent_buffer *src_buf);
static int del_ptr(struct btrfs_trans_handle *trans, struct btrfs_root *root,
struct btrfs_path *path, int level, int slot);
static int setup_items_for_insert(struct btrfs_trans_handle *trans,
struct btrfs_root *root, struct btrfs_path *path,
struct btrfs_key *cpu_key, u32 *data_size,
u32 total_data, u32 total_size, int nr);
struct btrfs_path *btrfs_alloc_path(void)
{
@ -3559,11 +3554,10 @@ out:
* to save stack depth by doing the bulk of the work in a function
* that doesn't call btrfs_search_slot
*/
static noinline_for_stack int
setup_items_for_insert(struct btrfs_trans_handle *trans,
struct btrfs_root *root, struct btrfs_path *path,
struct btrfs_key *cpu_key, u32 *data_size,
u32 total_data, u32 total_size, int nr)
int setup_items_for_insert(struct btrfs_trans_handle *trans,
struct btrfs_root *root, struct btrfs_path *path,
struct btrfs_key *cpu_key, u32 *data_size,
u32 total_data, u32 total_size, int nr)
{
struct btrfs_item *item;
int i;

29
fs/btrfs/ctree.h
View File

@ -870,6 +870,7 @@ struct btrfs_block_group_cache {
struct reloc_control;
struct btrfs_device;
struct btrfs_fs_devices;
struct btrfs_delayed_root;
struct btrfs_fs_info {
u8 fsid[BTRFS_FSID_SIZE];
u8 chunk_tree_uuid[BTRFS_UUID_SIZE];
@ -896,7 +897,10 @@ struct btrfs_fs_info {
/* logical->physical extent mapping */
struct btrfs_mapping_tree mapping_tree;
/* block reservation for extent, checksum and root tree */
/*
* block reservation for extent, checksum, root tree and
* delayed dir index item
*/
struct btrfs_block_rsv global_block_rsv;
/* block reservation for delay allocation */
struct btrfs_block_rsv delalloc_block_rsv;
@ -1023,6 +1027,7 @@ struct btrfs_fs_info {
* for the sys_munmap function call path
*/
struct btrfs_workers fixup_workers;
struct btrfs_workers delayed_workers;
struct task_struct *transaction_kthread;
struct task_struct *cleaner_kthread;
int thread_pool_size;
@ -1080,6 +1085,8 @@ struct btrfs_fs_info {
/* filesystem state */
u64 fs_state;
struct btrfs_delayed_root *delayed_root;
};
/*
@ -1172,6 +1179,11 @@ struct btrfs_root {
/* red-black tree that keeps track of in-memory inodes */
struct rb_root inode_tree;
/*
* radix tree that keeps track of delayed nodes of every inode,
* protected by inode_lock
*/
struct radix_tree_root delayed_nodes_tree;
/*
* right now this just gets used so that a root has its own devid
* for stat. It may be used for more later
@ -2110,6 +2122,13 @@ static inline bool btrfs_mixed_space_info(struct btrfs_space_info *space_info)
}
/* extent-tree.c */
static inline u64 btrfs_calc_trans_metadata_size(struct btrfs_root *root,
int num_items)
{
return (root->leafsize + root->nodesize * (BTRFS_MAX_LEVEL - 1)) *
3 * num_items;
}
void btrfs_put_block_group(struct btrfs_block_group_cache *cache);
int btrfs_run_delayed_refs(struct btrfs_trans_handle *trans,
struct btrfs_root *root, unsigned long count);
@ -2305,6 +2324,8 @@ void btrfs_release_path(struct btrfs_root *root, struct btrfs_path *p);
struct btrfs_path *btrfs_alloc_path(void);
void btrfs_free_path(struct btrfs_path *p);
void btrfs_set_path_blocking(struct btrfs_path *p);
void btrfs_clear_path_blocking(struct btrfs_path *p,
struct extent_buffer *held);
void btrfs_unlock_up_safe(struct btrfs_path *p, int level);
int btrfs_del_items(struct btrfs_trans_handle *trans, struct btrfs_root *root,
@ -2316,6 +2337,10 @@ static inline int btrfs_del_item(struct btrfs_trans_handle *trans,
return btrfs_del_items(trans, root, path, path->slots[0], 1);
}
int setup_items_for_insert(struct btrfs_trans_handle *trans,
struct btrfs_root *root, struct btrfs_path *path,
struct btrfs_key *cpu_key, u32 *data_size,
u32 total_data, u32 total_size, int nr);
int btrfs_insert_item(struct btrfs_trans_handle *trans, struct btrfs_root
*root, struct btrfs_key *key, void *data, u32 data_size);
int btrfs_insert_some_items(struct btrfs_trans_handle *trans,
@ -2379,7 +2404,7 @@ void btrfs_check_and_init_root_item(struct btrfs_root_item *item);
/* dir-item.c */
int btrfs_insert_dir_item(struct btrfs_trans_handle *trans,
struct btrfs_root *root, const char *name,
int name_len, u64 dir,
int name_len, struct inode *dir,
struct btrfs_key *location, u8 type, u64 index);
struct btrfs_dir_item *btrfs_lookup_dir_item(struct btrfs_trans_handle *trans,
struct btrfs_root *root,

1694
fs/btrfs/delayed-inode.c Normal file
View File

File diff suppressed because it is too large Load Diff

141
fs/btrfs/delayed-inode.h Normal file
View File

@ -0,0 +1,141 @@
/*
* Copyright (C) 2011 Fujitsu. All rights reserved.
* Written by Miao Xie <miaox@cn.fujitsu.com>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public
* License v2 as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public
* License along with this program; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 021110-1307, USA.
*/
#ifndef __DELAYED_TREE_OPERATION_H
#define __DELAYED_TREE_OPERATION_H
#include <linux/rbtree.h>
#include <linux/spinlock.h>
#include <linux/mutex.h>
#include <linux/list.h>
#include <linux/wait.h>
#include <asm/atomic.h>
#include "ctree.h"
/* types of the delayed item */
#define BTRFS_DELAYED_INSERTION_ITEM 1
#define BTRFS_DELAYED_DELETION_ITEM 2
struct btrfs_delayed_root {
spinlock_t lock;
struct list_head node_list;
/*
* Used for delayed nodes which is waiting to be dealt with by the
* worker. If the delayed node is inserted into the work queue, we
* drop it from this list.
*/
struct list_head prepare_list;
atomic_t items; /* for delayed items */
int nodes; /* for delayed nodes */
wait_queue_head_t wait;
};
struct btrfs_delayed_node {
u64 inode_id;
u64 bytes_reserved;
struct btrfs_root *root;
/* Used to add the node into the delayed root's node list. */
struct list_head n_list;
/*
* Used to add the node into the prepare list, the nodes in this list
* is waiting to be dealt with by the async worker.
*/
struct list_head p_list;
struct rb_root ins_root;
struct rb_root del_root;
struct mutex mutex;
struct btrfs_inode_item inode_item;
atomic_t refs;
u64 index_cnt;
bool in_list;
bool inode_dirty;
int count;
};
struct btrfs_delayed_item {
struct rb_node rb_node;
struct btrfs_key key;
struct list_head tree_list; /* used for batch insert/delete items */
struct list_head readdir_list; /* used for readdir items */
u64 bytes_reserved;
struct btrfs_block_rsv *block_rsv;
struct btrfs_delayed_node *delayed_node;
atomic_t refs;
int ins_or_del;
u32 data_len;
char data[0];
};
static inline void btrfs_init_delayed_root(
struct btrfs_delayed_root *delayed_root)
{
atomic_set(&delayed_root->items, 0);
delayed_root->nodes = 0;
spin_lock_init(&delayed_root->lock);
init_waitqueue_head(&delayed_root->wait);
INIT_LIST_HEAD(&delayed_root->node_list);
INIT_LIST_HEAD(&delayed_root->prepare_list);
}
int btrfs_insert_delayed_dir_index(struct btrfs_trans_handle *trans,
struct btrfs_root *root, const char *name,
int name_len, struct inode *dir,
struct btrfs_disk_key *disk_key, u8 type,
u64 index);
int btrfs_delete_delayed_dir_index(struct btrfs_trans_handle *trans,
struct btrfs_root *root, struct inode *dir,
u64 index);
int btrfs_inode_delayed_dir_index_count(struct inode *inode);
int btrfs_run_delayed_items(struct btrfs_trans_handle *trans,
struct btrfs_root *root);
void btrfs_balance_delayed_items(struct btrfs_root *root);
int btrfs_commit_inode_delayed_items(struct btrfs_trans_handle *trans,
struct inode *inode);
/* Used for evicting the inode. */
void btrfs_remove_delayed_node(struct inode *inode);
void btrfs_kill_delayed_inode_items(struct inode *inode);
int btrfs_delayed_update_inode(struct btrfs_trans_handle *trans,
struct btrfs_root *root, struct inode *inode);
/* Used for drop dead root */
void btrfs_kill_all_delayed_nodes(struct btrfs_root *root);
/* Used for readdir() */
void btrfs_get_delayed_items(struct inode *inode, struct list_head *ins_list,
struct list_head *del_list);
void btrfs_put_delayed_items(struct list_head *ins_list,
struct list_head *del_list);
int btrfs_should_delete_dir_index(struct list_head *del_list,
u64 index);
int btrfs_readdir_delayed_dir_index(struct file *filp, void *dirent,
filldir_t filldir,
struct list_head *ins_list);
/* for init */
int __init btrfs_delayed_inode_init(void);
void btrfs_delayed_inode_exit(void);
#endif

34
fs/btrfs/dir-item.c
View File

@ -124,8 +124,9 @@ int btrfs_insert_xattr_item(struct btrfs_trans_handle *trans,
* to use for the second index (if one is created).
*/
int btrfs_insert_dir_item(struct btrfs_trans_handle *trans, struct btrfs_root
*root, const char *name, int name_len, u64 dir,
struct btrfs_key *location, u8 type, u64 index)
*root, const char *name, int name_len,
struct inode *dir, struct btrfs_key *location,
u8 type, u64 index)
{
int ret = 0;
int ret2 = 0;
@ -137,13 +138,17 @@ int btrfs_insert_dir_item(struct btrfs_trans_handle *trans, struct btrfs_root
struct btrfs_disk_key disk_key;
u32 data_size;
key.objectid = dir;
key.objectid = dir->i_ino;
btrfs_set_key_type(&key, BTRFS_DIR_ITEM_KEY);
key.offset = btrfs_name_hash(name, name_len);
path = btrfs_alloc_path();
if (!path)
return -ENOMEM;
path->leave_spinning = 1;
btrfs_cpu_key_to_disk(&disk_key, location);
data_size = sizeof(*dir_item) + name_len;
dir_item = insert_with_overflow(trans, root, path, &key, data_size,
name, name_len);
@ -155,7 +160,6 @@ int btrfs_insert_dir_item(struct btrfs_trans_handle *trans, struct btrfs_root
}
leaf = path->nodes[0];
btrfs_cpu_key_to_disk(&disk_key, location);
btrfs_set_dir_item_key(leaf, dir_item, &disk_key);
btrfs_set_dir_type(leaf, dir_item, type);
btrfs_set_dir_data_len(leaf, dir_item, 0);
@ -174,27 +178,9 @@ second_insert:
}
btrfs_release_path(root, path);
btrfs_set_key_type(&key, BTRFS_DIR_INDEX_KEY);
key.offset = index;
dir_item = insert_with_overflow(trans, root, path, &key, data_size,
name, name_len);
if (IS_ERR(dir_item)) {
ret2 = PTR_ERR(dir_item);
goto out_free;
}
leaf = path->nodes[0];
btrfs_cpu_key_to_disk(&disk_key, location);
btrfs_set_dir_item_key(leaf, dir_item, &disk_key);
btrfs_set_dir_type(leaf, dir_item, type);
btrfs_set_dir_data_len(leaf, dir_item, 0);
btrfs_set_dir_name_len(leaf, dir_item, name_len);
btrfs_set_dir_transid(leaf, dir_item, trans->transid);
name_ptr = (unsigned long)(dir_item + 1);
write_extent_buffer(leaf, name, name_ptr, name_len);
btrfs_mark_buffer_dirty(leaf);
ret2 = btrfs_insert_delayed_dir_index(trans, root, name, name_len, dir,
&disk_key, type, index);
out_free:
btrfs_free_path(path);
if (ret)
return ret;

50
fs/btrfs/disk-io.c
View File

@ -1059,6 +1059,7 @@ static int __setup_root(u32 nodesize, u32 leafsize, u32 sectorsize,
root->name = NULL;
root->in_sysfs = 0;
root->inode_tree = RB_ROOT;
INIT_RADIX_TREE(&root->delayed_nodes_tree, GFP_ATOMIC);
root->block_rsv = NULL;
root->orphan_block_rsv = NULL;
@ -1707,6 +1708,13 @@ struct btrfs_root *open_ctree(struct super_block *sb,
INIT_LIST_HEAD(&fs_info->ordered_extents);
spin_lock_init(&fs_info->ordered_extent_lock);
fs_info->delayed_root = kmalloc(sizeof(struct btrfs_delayed_root),
GFP_NOFS);
if (!fs_info->delayed_root) {
err = -ENOMEM;
goto fail_iput;
}
btrfs_init_delayed_root(fs_info->delayed_root);
sb->s_blocksize = 4096;
sb->s_blocksize_bits = blksize_bits(4096);
@ -1774,7 +1782,7 @@ struct btrfs_root *open_ctree(struct super_block *sb,
bh = btrfs_read_dev_super(fs_devices->latest_bdev);
if (!bh) {
err = -EINVAL;
goto fail_iput;
goto fail_alloc;
}
memcpy(&fs_info->super_copy, bh->b_data, sizeof(fs_info->super_copy));
@ -1786,7 +1794,7 @@ struct btrfs_root *open_ctree(struct super_block *sb,
disk_super = &fs_info->super_copy;
if (!btrfs_super_root(disk_super))
goto fail_iput;
goto fail_alloc;
/* check FS state, whether FS is broken. */
fs_info->fs_state |= btrfs_super_flags(disk_super);
@ -1802,7 +1810,7 @@ struct btrfs_root *open_ctree(struct super_block *sb,
ret = btrfs_parse_options(tree_root, options);
if (ret) {
err = ret;
goto fail_iput;
goto fail_alloc;
}
features = btrfs_super_incompat_flags(disk_super) &
@ -1812,7 +1820,7 @@ struct btrfs_root *open_ctree(struct super_block *sb,
"unsupported optional features (%Lx).\n",
(unsigned long long)features);
err = -EINVAL;
goto fail_iput;
goto fail_alloc;
}
features = btrfs_super_incompat_flags(disk_super);
@ -1828,7 +1836,7 @@ struct btrfs_root *open_ctree(struct super_block *sb,
"unsupported option features (%Lx).\n",
(unsigned long long)features);
err = -EINVAL;
goto fail_iput;
goto fail_alloc;
}
btrfs_init_workers(&fs_info->generic_worker,
@ -1875,6 +1883,9 @@ struct btrfs_root *open_ctree(struct super_block *sb,
&fs_info->generic_worker);
btrfs_init_workers(&fs_info->endio_freespace_worker, "freespace-write",
1, &fs_info->generic_worker);
btrfs_init_workers(&fs_info->delayed_workers, "delayed-meta",
fs_info->thread_pool_size,
&fs_info->generic_worker);
/*
* endios are largely parallel and should have a very
@ -1896,6 +1907,7 @@ struct btrfs_root *open_ctree(struct super_block *sb,
btrfs_start_workers(&fs_info->endio_meta_write_workers, 1);
btrfs_start_workers(&fs_info->endio_write_workers, 1);
btrfs_start_workers(&fs_info->endio_freespace_worker, 1);
btrfs_start_workers(&fs_info->delayed_workers, 1);
fs_info->bdi.ra_pages *= btrfs_super_num_devices(disk_super);
fs_info->bdi.ra_pages = max(fs_info->bdi.ra_pages,
@ -2152,6 +2164,9 @@ fail_sb_buffer:
btrfs_stop_workers(&fs_info->endio_write_workers);
btrfs_stop_workers(&fs_info->endio_freespace_worker);
btrfs_stop_workers(&fs_info->submit_workers);
btrfs_stop_workers(&fs_info->delayed_workers);
fail_alloc:
kfree(fs_info->delayed_root);
fail_iput:
invalidate_inode_pages2(fs_info->btree_inode->i_mapping);
iput(fs_info->btree_inode);
@ -2597,6 +2612,7 @@ int close_ctree(struct btrfs_root *root)
del_fs_roots(fs_info);
iput(fs_info->btree_inode);
kfree(fs_info->delayed_root);
btrfs_stop_workers(&fs_info->generic_worker);
btrfs_stop_workers(&fs_info->fixup_workers);
@ -2608,6 +2624,7 @@ int close_ctree(struct btrfs_root *root)
btrfs_stop_workers(&fs_info->endio_write_workers);
btrfs_stop_workers(&fs_info->endio_freespace_worker);
btrfs_stop_workers(&fs_info->submit_workers);
btrfs_stop_workers(&fs_info->delayed_workers);
btrfs_close_devices(fs_info->fs_devices);
btrfs_mapping_tree_free(&fs_info->mapping_tree);
@ -2681,6 +2698,29 @@ void btrfs_btree_balance_dirty(struct btrfs_root *root, unsigned long nr)
u64 num_dirty;
unsigned long thresh = 32 * 1024 * 1024;
if (current->flags & PF_MEMALLOC)
return;
btrfs_balance_delayed_items(root);
num_dirty = root->fs_info->dirty_metadata_bytes;
if (num_dirty > thresh) {
balance_dirty_pages_ratelimited_nr(
root->fs_info->btree_inode->i_mapping, 1);
}
return;
}
void __btrfs_btree_balance_dirty(struct btrfs_root *root, unsigned long nr)
{
/*
* looks as though older kernels can get into trouble with
* this code, they end up stuck in balance_dirty_pages forever
*/
u64 num_dirty;
unsigned long thresh = 32 * 1024 * 1024;
if (current->flags & PF_MEMALLOC)
return;

1
fs/btrfs/disk-io.h
View File

@ -71,6 +71,7 @@ int btrfs_insert_dev_radix(struct btrfs_root *root,
u64 block_start,
u64 num_blocks);
void btrfs_btree_balance_dirty(struct btrfs_root *root, unsigned long nr);
void __btrfs_btree_balance_dirty(struct btrfs_root *root, unsigned long nr);
int btrfs_free_fs_root(struct btrfs_fs_info *fs_info, struct btrfs_root *root);
void btrfs_mark_buffer_dirty(struct extent_buffer *buf);
void btrfs_mark_buffer_dirty_nonblocking(struct extent_buffer *buf);

18
fs/btrfs/extent-tree.c
View File

@ -3975,12 +3975,6 @@ static void release_global_block_rsv(struct btrfs_fs_info *fs_info)
WARN_ON(fs_info->chunk_block_rsv.reserved > 0);
}
static u64 calc_trans_metadata_size(struct btrfs_root *root, int num_items)
{
return (root->leafsize + root->nodesize * (BTRFS_MAX_LEVEL - 1)) *
3 * num_items;
}
int btrfs_trans_reserve_metadata(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
int num_items)
@ -3991,7 +3985,7 @@ int btrfs_trans_reserve_metadata(struct btrfs_trans_handle *trans,
if (num_items == 0 || root->fs_info->chunk_root == root)
return 0;
num_bytes = calc_trans_metadata_size(root, num_items);
num_bytes = btrfs_calc_trans_metadata_size(root, num_items);
ret = btrfs_block_rsv_add(trans, root, &root->fs_info->trans_block_rsv,
num_bytes);
if (!ret) {
@ -4030,14 +4024,14 @@ int btrfs_orphan_reserve_metadata(struct btrfs_trans_handle *trans,
* If all of the metadata space is used, we can commit
* transaction and use space it freed.
*/
u64 num_bytes = calc_trans_metadata_size(root, 4);
u64 num_bytes = btrfs_calc_trans_metadata_size(root, 4);
return block_rsv_migrate_bytes(src_rsv, dst_rsv, num_bytes);
}
void btrfs_orphan_release_metadata(struct inode *inode)
{
struct btrfs_root *root = BTRFS_I(inode)->root;
u64 num_bytes = calc_trans_metadata_size(root, 4);
u64 num_bytes = btrfs_calc_trans_metadata_size(root, 4);
btrfs_block_rsv_release(root, root->orphan_block_rsv, num_bytes);
}
@ -4051,7 +4045,7 @@ int btrfs_snap_reserve_metadata(struct btrfs_trans_handle *trans,
* two for root back/forward refs, two for directory entries
* and one for root of the snapshot.
*/
u64 num_bytes = calc_trans_metadata_size(root, 5);
u64 num_bytes = btrfs_calc_trans_metadata_size(root, 5);
dst_rsv->space_info = src_rsv->space_info;
return block_rsv_migrate_bytes(src_rsv, dst_rsv, num_bytes);
}
@ -4080,7 +4074,7 @@ int btrfs_delalloc_reserve_metadata(struct inode *inode, u64 num_bytes)
if (nr_extents > reserved_extents) {
nr_extents -= reserved_extents;
to_reserve = calc_trans_metadata_size(root, nr_extents);
to_reserve = btrfs_calc_trans_metadata_size(root, nr_extents);
} else {
nr_extents = 0;
to_reserve = 0;
@ -4134,7 +4128,7 @@ void btrfs_delalloc_release_metadata(struct inode *inode, u64 num_bytes)
to_free = calc_csum_metadata_size(inode, num_bytes);
if (nr_extents > 0)
to_free += calc_trans_metadata_size(root, nr_extents);
to_free += btrfs_calc_trans_metadata_size(root, nr_extents);
btrfs_block_rsv_release(root, &root->fs_info->delalloc_block_rsv,
to_free);

113
fs/btrfs/inode.c
View File

@ -2659,11 +2659,26 @@ noinline int btrfs_update_inode(struct btrfs_trans_handle *trans,
struct extent_buffer *leaf;
int ret;
/*
* If root is tree root, it means this inode is used to
* store free space information. And these inodes are updated
* when committing the transaction, so they needn't delaye to
* be updated, or deadlock will occured.
*/
if (!is_free_space_inode(root, inode)) {
ret = btrfs_delayed_update_inode(trans, root, inode);
if (!ret)
btrfs_set_inode_last_trans(trans, inode);
return ret;
}
path = btrfs_alloc_path();
BUG_ON(!path);
if (!path)
return -ENOMEM;
path->leave_spinning = 1;
ret = btrfs_lookup_inode(trans, root, path,
&BTRFS_I(inode)->location, 1);
ret = btrfs_lookup_inode(trans, root, path, &BTRFS_I(inode)->location,
1);
if (ret) {
if (ret > 0)
ret = -ENOENT;
@ -2673,7 +2688,7 @@ noinline int btrfs_update_inode(struct btrfs_trans_handle *trans,
btrfs_unlock_up_safe(path, 1);
leaf = path->nodes[0];
inode_item = btrfs_item_ptr(leaf, path->slots[0],
struct btrfs_inode_item);
struct btrfs_inode_item);
fill_inode_item(trans, leaf, inode_item, inode);
btrfs_mark_buffer_dirty(leaf);
@ -2684,7 +2699,6 @@ failed:
return ret;
}
/*
* unlink helper that gets used here in inode.c and in the tree logging
* recovery code. It remove a link in a directory with a given name, and
@ -2737,18 +2751,9 @@ static int __btrfs_unlink_inode(struct btrfs_trans_handle *trans,
goto err;
}
di = btrfs_lookup_dir_index_item(trans, root, path, dir_ino,
index, name, name_len, -1);
if (IS_ERR(di)) {
ret = PTR_ERR(di);
ret = btrfs_delete_delayed_dir_index(trans, root, dir, index);
if (ret)
goto err;
}
if (!di) {
ret = -ENOENT;
goto err;
}
ret = btrfs_delete_one_dir_name(trans, root, path, di);
btrfs_release_path(root, path);
ret = btrfs_del_inode_ref_in_log(trans, root, name, name_len,
inode, dir_ino);
@ -2939,6 +2944,14 @@ static struct btrfs_trans_handle *__unlink_start_trans(struct inode *dir,
index = btrfs_inode_ref_index(path->nodes[0], ref);
btrfs_release_path(root, path);
/*
* This is a commit root search, if we can lookup inode item and other
* relative items in the commit root, it means the transaction of
* dir/file creation has been committed, and the dir index item that we
* delay to insert has also been inserted into the commit root. So
* we needn't worry about the delayed insertion of the dir index item
* here.
*/
di = btrfs_lookup_dir_index_item(trans, root, path, dir_ino, index,
dentry->d_name.name, dentry->d_name.len, 0);
if (IS_ERR(di)) {
@ -3045,24 +3058,16 @@ int btrfs_unlink_subvol(struct btrfs_trans_handle *trans,
btrfs_release_path(root, path);
index = key.offset;
}
di = btrfs_lookup_dir_index_item(trans, root, path, dir_ino,
index, name, name_len, -1);
BUG_ON(!di || IS_ERR(di));
leaf = path->nodes[0];
btrfs_dir_item_key_to_cpu(leaf, di, &key);
WARN_ON(key.type != BTRFS_ROOT_ITEM_KEY || key.objectid != objectid);
ret = btrfs_delete_one_dir_name(trans, root, path, di);
BUG_ON(ret);
btrfs_release_path(root, path);
ret = btrfs_delete_delayed_dir_index(trans, root, dir, index);
BUG_ON(ret);
btrfs_i_size_write(dir, dir->i_size - name_len * 2);
dir->i_mtime = dir->i_ctime = CURRENT_TIME;
ret = btrfs_update_inode(trans, root, dir);
BUG_ON(ret);
btrfs_free_path(path);
return 0;
}
@ -3323,6 +3328,15 @@ int btrfs_truncate_inode_items(struct btrfs_trans_handle *trans,
if (root->ref_cows || root == root->fs_info->tree_root)
btrfs_drop_extent_cache(inode, new_size & (~mask), (u64)-1, 0);
/*
* This function is also used to drop the items in the log tree before
* we relog the inode, so if root != BTRFS_I(inode)->root, it means
* it is used to drop the loged items. So we shouldn't kill the delayed
* items.
*/
if (min_type == 0 && root == BTRFS_I(inode)->root)
btrfs_kill_delayed_inode_items(inode);
path = btrfs_alloc_path();
BUG_ON(!path);
path->reada = -1;
@ -4232,7 +4246,7 @@ static struct dentry *btrfs_lookup(struct inode *dir, struct dentry *dentry,
return d_splice_alias(inode, dentry);
}
static unsigned char btrfs_filetype_table[] = {
unsigned char btrfs_filetype_table[] = {
DT_UNKNOWN, DT_REG, DT_DIR, DT_CHR, DT_BLK, DT_FIFO, DT_SOCK, DT_LNK
};
@ -4246,6 +4260,8 @@ static int btrfs_real_readdir(struct file *filp, void *dirent,
struct btrfs_key key;
struct btrfs_key found_key;
struct btrfs_path *path;
struct list_head ins_list;
struct list_head del_list;
int ret;
struct extent_buffer *leaf;
int slot;
@ -4258,6 +4274,7 @@ static int btrfs_real_readdir(struct file *filp, void *dirent,
char tmp_name[32];
char *name_ptr;
int name_len;
int is_curr = 0; /* filp->f_pos points to the current index? */
/* FIXME, use a real flag for deciding about the key type */
if (root->fs_info->tree_root == root)
@ -4280,8 +4297,16 @@ static int btrfs_real_readdir(struct file *filp, void *dirent,
filp->f_pos = 2;
}
path = btrfs_alloc_path();
if (!path)
return -ENOMEM;
path->reada = 2;
if (key_type == BTRFS_DIR_INDEX_KEY) {
INIT_LIST_HEAD(&ins_list);
INIT_LIST_HEAD(&del_list);
btrfs_get_delayed_items(inode, &ins_list, &del_list);
}
btrfs_set_key_type(&key, key_type);
key.offset = filp->f_pos;
key.objectid = btrfs_ino(inode);
@ -4311,8 +4336,13 @@ static int btrfs_real_readdir(struct file *filp, void *dirent,
break;
if (found_key.offset < filp->f_pos)
goto next;
if (key_type == BTRFS_DIR_INDEX_KEY &&
btrfs_should_delete_dir_index(&del_list,
found_key.offset))
goto next;
filp->f_pos = found_key.offset;
is_curr = 1;
di = btrfs_item_ptr(leaf, slot, struct btrfs_dir_item);
di_cur = 0;
@ -4367,6 +4397,15 @@ next:
path->slots[0]++;
}
if (key_type == BTRFS_DIR_INDEX_KEY) {
if (is_curr)
filp->f_pos++;
ret = btrfs_readdir_delayed_dir_index(filp, dirent, filldir,
&ins_list);
if (ret)
goto nopos;
}
/* Reached end of directory/root. Bump pos past the last item. */
if (key_type == BTRFS_DIR_INDEX_KEY)
/*
@ -4379,6 +4418,8 @@ next:
nopos:
ret = 0;
err:
if (key_type == BTRFS_DIR_INDEX_KEY)
btrfs_put_delayed_items(&ins_list, &del_list);
btrfs_free_path(path);
return ret;
}
@ -4459,6 +4500,8 @@ void btrfs_dirty_inode(struct inode *inode)
}
}
btrfs_end_transaction(trans, root);
if (BTRFS_I(inode)->delayed_node)
btrfs_balance_delayed_items(root);
}
/*
@ -4527,9 +4570,12 @@ int btrfs_set_inode_index(struct inode *dir, u64 *index)
int ret = 0;
if (BTRFS_I(dir)->index_cnt == (u64)-1) {
ret = btrfs_set_inode_index_count(dir);
if (ret)
return ret;
ret = btrfs_inode_delayed_dir_index_count(dir);
if (ret) {
ret = btrfs_set_inode_index_count(dir);
if (ret)
return ret;
}
}
*index = BTRFS_I(dir)->index_cnt;
@ -4701,7 +4747,7 @@ int btrfs_add_link(struct btrfs_trans_handle *trans,
if (ret == 0) {
ret = btrfs_insert_dir_item(trans, root, name, name_len,
parent_ino, &key,
parent_inode, &key,
btrfs_inode_type(inode), index);
BUG_ON(ret);
@ -6816,6 +6862,8 @@ struct inode *btrfs_alloc_inode(struct super_block *sb)
ei->dummy_inode = 0;
ei->force_compress = BTRFS_COMPRESS_NONE;
ei->delayed_node = NULL;
inode = &ei->vfs_inode;
extent_map_tree_init(&ei->extent_tree, GFP_NOFS);
extent_io_tree_init(&ei->io_tree, &inode->i_data, GFP_NOFS);
@ -6906,6 +6954,7 @@ void btrfs_destroy_inode(struct inode *inode)
inode_tree_del(inode);
btrfs_drop_extent_cache(inode, 0, (u64)-1, 0);
free:
btrfs_remove_delayed_node(inode);
call_rcu(&inode->i_rcu, btrfs_i_callback);
}

2
fs/btrfs/ioctl.c
View File

@ -422,7 +422,7 @@ static noinline int create_subvol(struct btrfs_root *root,
BUG_ON(ret);
ret = btrfs_insert_dir_item(trans, root,
name, namelen, btrfs_ino(dir), &key,
name, namelen, dir, &key,
BTRFS_FT_DIR, index);
if (ret)
goto fail;

10
fs/btrfs/super.c
View File

@ -40,6 +40,7 @@
#include <linux/magic.h>
#include <linux/slab.h>
#include "compat.h"
#include "delayed-inode.h"
#include "ctree.h"
#include "disk-io.h"
#include "transaction.h"
@ -1206,10 +1207,14 @@ static int __init init_btrfs_fs(void)
if (err)
goto free_extent_io;
err = btrfs_interface_init();
err = btrfs_delayed_inode_init();
if (err)
goto free_extent_map;
err = btrfs_interface_init();
if (err)
goto free_delayed_inode;
err = register_filesystem(&btrfs_fs_type);
if (err)
goto unregister_ioctl;
@ -1219,6 +1224,8 @@ static int __init init_btrfs_fs(void)
unregister_ioctl:
btrfs_interface_exit();
free_delayed_inode:
btrfs_delayed_inode_exit();
free_extent_map:
extent_map_exit();
free_extent_io:
@ -1235,6 +1242,7 @@ free_sysfs:
static void __exit exit_btrfs_fs(void)
{
btrfs_destroy_cachep();
btrfs_delayed_inode_exit();
extent_map_exit();
extent_io_exit();
btrfs_interface_exit();

45
fs/btrfs/transaction.c
View File

@ -488,19 +488,40 @@ static int __btrfs_end_transaction(struct btrfs_trans_handle *trans,
int btrfs_end_transaction(struct btrfs_trans_handle *trans,
struct btrfs_root *root)
{
return __btrfs_end_transaction(trans, root, 0, 1);
int ret;
ret = __btrfs_end_transaction(trans, root, 0, 1);
if (ret)
return ret;
return 0;
}
int btrfs_end_transaction_throttle(struct btrfs_trans_handle *trans,
struct btrfs_root *root)
{
return __btrfs_end_transaction(trans, root, 1, 1);
int ret;
ret = __btrfs_end_transaction(trans, root, 1, 1);
if (ret)
return ret;
return 0;
}
int btrfs_end_transaction_nolock(struct btrfs_trans_handle *trans,
struct btrfs_root *root)
{
return __btrfs_end_transaction(trans, root, 0, 0);
int ret;
ret = __btrfs_end_transaction(trans, root, 0, 0);
if (ret)
return ret;
return 0;
}
int btrfs_end_transaction_dmeta(struct btrfs_trans_handle *trans,
struct btrfs_root *root)
{
return __btrfs_end_transaction(trans, root, 1, 1);
}
/*
@ -974,7 +995,7 @@ static noinline int create_pending_snapshot(struct btrfs_trans_handle *trans,
BUG_ON(ret);
ret = btrfs_insert_dir_item(trans, parent_root,
dentry->d_name.name, dentry->d_name.len,
btrfs_ino(parent_inode), &key,
parent_inode, &key,
BTRFS_FT_DIR, index);
BUG_ON(ret);
@ -1044,6 +1065,14 @@ static noinline int create_pending_snapshots(struct btrfs_trans_handle *trans,
int ret;
list_for_each_entry(pending, head, list) {
/*
* We must deal with the delayed items before creating
* snapshots, or we will create a snapthot with inconsistent
* information.
*/
ret = btrfs_run_delayed_items(trans, fs_info->fs_root);
BUG_ON(ret);
ret = create_pending_snapshot(trans, fs_info, pending);
BUG_ON(ret);
}
@ -1297,6 +1326,9 @@ int btrfs_commit_transaction(struct btrfs_trans_handle *trans,
BUG_ON(ret);
}
ret = btrfs_run_delayed_items(trans, root);
BUG_ON(ret);
/*
* rename don't use btrfs_join_transaction, so, once we
* set the transaction to blocked above, we aren't going
@ -1323,6 +1355,9 @@ int btrfs_commit_transaction(struct btrfs_trans_handle *trans,
ret = create_pending_snapshots(trans, root->fs_info);
BUG_ON(ret);
ret = btrfs_run_delayed_items(trans, root);
BUG_ON(ret);
ret = btrfs_run_delayed_refs(trans, root, (unsigned long)-1);
BUG_ON(ret);
@ -1439,6 +1474,8 @@ int btrfs_clean_old_snapshots(struct btrfs_root *root)
root = list_entry(list.next, struct btrfs_root, root_list);
list_del(&root->root_list);
btrfs_kill_all_delayed_nodes(root);
if (btrfs_header_backref_rev(root->node) <
BTRFS_MIXED_BACKREF_REV)
btrfs_drop_snapshot(root, NULL, 0);

2
fs/btrfs/transaction.h
View File

@ -115,6 +115,8 @@ int btrfs_commit_transaction_async(struct btrfs_trans_handle *trans,
int wait_for_unblock);
int btrfs_end_transaction_throttle(struct btrfs_trans_handle *trans,
struct btrfs_root *root);
int btrfs_end_transaction_dmeta(struct btrfs_trans_handle *trans,
struct btrfs_root *root);
int btrfs_should_end_transaction(struct btrfs_trans_handle *trans,
struct btrfs_root *root);
void btrfs_throttle(struct btrfs_root *root);

7
fs/btrfs/tree-log.c
View File

@ -2774,6 +2774,13 @@ static int btrfs_log_inode(struct btrfs_trans_handle *trans,
max_key.type = (u8)-1;
max_key.offset = (u64)-1;
ret = btrfs_commit_inode_delayed_items(trans, inode);
if (ret) {
btrfs_free_path(path);
btrfs_free_path(dst_path);
return ret;
}
mutex_lock(&BTRFS_I(inode)->log_mutex);
/*