mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-11-11 12:28:41 +08:00
Btrfs: drop the inode map tree
Signed-off-by: Chris Mason <chris.mason@oracle.com>
This commit is contained in:
Chris Mason
David Woodhouse
parent
c5739bba52
commit
1b05da2ee6
@ -2,11 +2,9 @@
|
||||
#define __BTRFS_I__
|
||||
|
||||
struct btrfs_inode {
|
||||
u32 magic;
|
||||
struct btrfs_root *root;
|
||||
struct btrfs_key location;
|
||||
struct inode vfs_inode;
|
||||
u32 magic2;
|
||||
};
|
||||
static inline struct btrfs_inode *BTRFS_I(struct inode *inode)
|
||||
{
|
||||
|
||||
@ -14,9 +14,8 @@ extern struct kmem_cache *btrfs_path_cachep;
|
||||
|
||||
#define BTRFS_ROOT_TREE_OBJECTID 1ULL
|
||||
#define BTRFS_EXTENT_TREE_OBJECTID 2ULL
|
||||
#define BTRFS_INODE_MAP_OBJECTID 3ULL
|
||||
#define BTRFS_FS_TREE_OBJECTID 4ULL
|
||||
#define BTRFS_FIRST_FREE_OBJECTID 5ULL
|
||||
#define BTRFS_FS_TREE_OBJECTID 3ULL
|
||||
#define BTRFS_FIRST_FREE_OBJECTID 4ULL
|
||||
|
||||
/*
|
||||
* we can actually store much bigger names, but lets not confuse the rest
|
||||
@ -62,7 +61,6 @@ struct btrfs_header {
|
||||
__le64 blocknr; /* which block this node is supposed to live in */
|
||||
__le64 generation;
|
||||
__le64 parentid; /* objectid of the tree root */
|
||||
__le32 ham;
|
||||
__le16 nritems;
|
||||
__le16 flags;
|
||||
u8 level;
|
||||
@ -226,23 +224,16 @@ struct btrfs_csum_item {
|
||||
u8 csum[BTRFS_CSUM_SIZE];
|
||||
} __attribute__ ((__packed__));
|
||||
|
||||
struct btrfs_inode_map_item {
|
||||
u32 refs;
|
||||
} __attribute__ ((__packed__));
|
||||
|
||||
struct crypto_hash;
|
||||
struct btrfs_fs_info {
|
||||
struct btrfs_root *extent_root;
|
||||
struct btrfs_root *tree_root;
|
||||
struct btrfs_root *inode_root;
|
||||
struct btrfs_key current_insert;
|
||||
struct btrfs_key last_insert;
|
||||
struct radix_tree_root fs_roots_radix;
|
||||
struct radix_tree_root pending_del_radix;
|
||||
struct radix_tree_root pinned_radix;
|
||||
u64 last_inode_alloc;
|
||||
u64 generation;
|
||||
u64 highest_inode;
|
||||
struct btrfs_transaction *running_transaction;
|
||||
struct btrfs_super_block *disk_super;
|
||||
struct buffer_head *sb_buffer;
|
||||
@ -272,6 +263,8 @@ struct btrfs_root {
|
||||
u32 blocksize;
|
||||
int ref_cows;
|
||||
u32 type;
|
||||
u64 highest_inode;
|
||||
u64 last_inode_alloc;
|
||||
};
|
||||
|
||||
/* the lower bits in the key flags defines the item type */
|
||||
@ -320,16 +313,11 @@ struct btrfs_root {
|
||||
*/
|
||||
#define BTRFS_EXTENT_ITEM_KEY 8
|
||||
|
||||
/*
|
||||
* the inode map records which inode numbers are in use and where
|
||||
* they actually live on disk
|
||||
*/
|
||||
#define BTRFS_INODE_MAP_ITEM_KEY 9
|
||||
/*
|
||||
* string items are for debugging. They just store a short string of
|
||||
* data in the FS
|
||||
*/
|
||||
#define BTRFS_STRING_ITEM_KEY 10
|
||||
#define BTRFS_STRING_ITEM_KEY 9
|
||||
|
||||
static inline u64 btrfs_inode_generation(struct btrfs_inode_item *i)
|
||||
{
|
||||
@ -883,17 +871,6 @@ static inline void btrfs_set_file_extent_num_blocks(struct
|
||||
e->num_blocks = cpu_to_le64(val);
|
||||
}
|
||||
|
||||
static inline u32 btrfs_inode_map_refs(struct btrfs_inode_map_item *m)
|
||||
{
|
||||
return le32_to_cpu(m->refs);
|
||||
}
|
||||
|
||||
static inline void btrfs_set_inode_map_refs(struct btrfs_inode_map_item *m,
|
||||
u32 val)
|
||||
{
|
||||
m->refs = cpu_to_le32(val);
|
||||
}
|
||||
|
||||
static inline struct btrfs_root *btrfs_sb(struct super_block *sb)
|
||||
{
|
||||
return sb->s_fs_info;
|
||||
@ -996,12 +973,6 @@ int btrfs_match_dir_item_name(struct btrfs_root *root, struct btrfs_path *path,
|
||||
int btrfs_find_free_objectid(struct btrfs_trans_handle *trans,
|
||||
struct btrfs_root *fs_root,
|
||||
u64 dirid, u64 *objectid);
|
||||
int btrfs_insert_inode_map(struct btrfs_trans_handle *trans,
|
||||
struct btrfs_root *root,
|
||||
u64 objectid, struct btrfs_key *location);
|
||||
int btrfs_lookup_inode_map(struct btrfs_trans_handle *trans,
|
||||
struct btrfs_root *root, struct btrfs_path *path,
|
||||
u64 objectid, int mod);
|
||||
int btrfs_find_highest_inode(struct btrfs_root *fs_root, u64 *objectid);
|
||||
|
||||
/* inode-item.c */
|
||||
|
||||
@ -264,6 +264,8 @@ static int __setup_root(int blocksize,
|
||||
root->fs_info = fs_info;
|
||||
root->objectid = objectid;
|
||||
root->last_trans = 0;
|
||||
root->highest_inode = 0;
|
||||
root->last_inode_alloc = 0;
|
||||
memset(&root->root_key, 0, sizeof(root->root_key));
|
||||
memset(&root->root_item, 0, sizeof(root->root_item));
|
||||
return 0;
|
||||
@ -295,6 +297,7 @@ struct btrfs_root *btrfs_read_fs_root(struct btrfs_fs_info *fs_info,
|
||||
struct btrfs_root *tree_root = fs_info->tree_root;
|
||||
struct btrfs_path *path;
|
||||
struct btrfs_leaf *l;
|
||||
u64 highest_inode;
|
||||
int ret = 0;
|
||||
|
||||
printk("read_fs_root looking for %Lu %Lu %u\n", location->objectid, location->offset, location->flags);
|
||||
@ -354,6 +357,12 @@ printk("radix_tree_insert gives us %d\n", ret);
|
||||
kfree(root);
|
||||
return ERR_PTR(ret);
|
||||
}
|
||||
ret = btrfs_find_highest_inode(root, &highest_inode);
|
||||
if (ret == 0) {
|
||||
root->highest_inode = highest_inode;
|
||||
root->last_inode_alloc = highest_inode;
|
||||
printk("highest inode is %Lu\n", highest_inode);
|
||||
}
|
||||
printk("all worked\n");
|
||||
return root;
|
||||
}
|
||||
@ -364,8 +373,6 @@ struct btrfs_root *open_ctree(struct super_block *sb)
|
||||
GFP_NOFS);
|
||||
struct btrfs_root *tree_root = kmalloc(sizeof(struct btrfs_root),
|
||||
GFP_NOFS);
|
||||
struct btrfs_root *inode_root = kmalloc(sizeof(struct btrfs_root),
|
||||
GFP_NOFS);
|
||||
struct btrfs_fs_info *fs_info = kmalloc(sizeof(*fs_info),
|
||||
GFP_NOFS);
|
||||
int ret;
|
||||
@ -378,9 +385,6 @@ struct btrfs_root *open_ctree(struct super_block *sb)
|
||||
fs_info->running_transaction = NULL;
|
||||
fs_info->tree_root = tree_root;
|
||||
fs_info->extent_root = extent_root;
|
||||
fs_info->inode_root = inode_root;
|
||||
fs_info->last_inode_alloc = 0;
|
||||
fs_info->highest_inode = 0;
|
||||
fs_info->sb = sb;
|
||||
fs_info->btree_inode = new_inode(sb);
|
||||
fs_info->btree_inode->i_ino = 1;
|
||||
@ -425,14 +429,7 @@ struct btrfs_root *open_ctree(struct super_block *sb)
|
||||
BTRFS_EXTENT_TREE_OBJECTID, extent_root);
|
||||
BUG_ON(ret);
|
||||
|
||||
ret = find_and_setup_root(sb->s_blocksize, tree_root, fs_info,
|
||||
BTRFS_INODE_MAP_OBJECTID, inode_root);
|
||||
BUG_ON(ret);
|
||||
|
||||
fs_info->generation = btrfs_super_generation(disk_super) + 1;
|
||||
ret = btrfs_find_highest_inode(tree_root, &fs_info->last_inode_alloc);
|
||||
if (ret == 0)
|
||||
fs_info->highest_inode = fs_info->last_inode_alloc;
|
||||
memset(&fs_info->kobj, 0, sizeof(fs_info->kobj));
|
||||
kobj_set_kset_s(fs_info, btrfs_subsys);
|
||||
kobject_set_name(&fs_info->kobj, "%s", sb->s_id);
|
||||
@ -512,9 +509,6 @@ int close_ctree(struct btrfs_root *root)
|
||||
if (fs_info->extent_root->node)
|
||||
btrfs_block_release(fs_info->extent_root,
|
||||
fs_info->extent_root->node);
|
||||
if (fs_info->inode_root->node)
|
||||
btrfs_block_release(fs_info->inode_root,
|
||||
fs_info->inode_root->node);
|
||||
if (fs_info->tree_root->node)
|
||||
btrfs_block_release(fs_info->tree_root,
|
||||
fs_info->tree_root->node);
|
||||
@ -524,7 +518,6 @@ int close_ctree(struct btrfs_root *root)
|
||||
iput(fs_info->btree_inode);
|
||||
del_fs_roots(fs_info);
|
||||
kfree(fs_info->extent_root);
|
||||
kfree(fs_info->inode_root);
|
||||
kfree(fs_info->tree_root);
|
||||
kobject_unregister(&fs_info->kobj);
|
||||
return 0;
|
||||
|
||||
@ -22,6 +22,8 @@ int btrfs_insert_inode(struct btrfs_trans_handle *trans, struct btrfs_root
|
||||
sizeof(*inode_item));
|
||||
btrfs_release_path(root, path);
|
||||
btrfs_free_path(path);
|
||||
if (ret == 0 && objectid > root->highest_inode)
|
||||
root->highest_inode = objectid;
|
||||
return ret;
|
||||
}
|
||||
|
||||
|
||||
@ -3,12 +3,11 @@
|
||||
#include "disk-io.h"
|
||||
#include "transaction.h"
|
||||
|
||||
int btrfs_find_highest_inode(struct btrfs_root *fs_root, u64 *objectid)
|
||||
int btrfs_find_highest_inode(struct btrfs_root *root, u64 *objectid)
|
||||
{
|
||||
struct btrfs_path *path;
|
||||
int ret;
|
||||
struct btrfs_leaf *l;
|
||||
struct btrfs_root *root = fs_root->fs_info->inode_root;
|
||||
struct btrfs_key search_key;
|
||||
int slot;
|
||||
|
||||
@ -38,7 +37,7 @@ error:
|
||||
* walks the btree of allocated inodes and find a hole.
|
||||
*/
|
||||
int btrfs_find_free_objectid(struct btrfs_trans_handle *trans,
|
||||
struct btrfs_root *fs_root,
|
||||
struct btrfs_root *root,
|
||||
u64 dirid, u64 *objectid)
|
||||
{
|
||||
struct btrfs_path *path;
|
||||
@ -49,16 +48,13 @@ int btrfs_find_free_objectid(struct btrfs_trans_handle *trans,
|
||||
u64 last_ino = 0;
|
||||
int start_found;
|
||||
struct btrfs_leaf *l;
|
||||
struct btrfs_root *root = fs_root->fs_info->inode_root;
|
||||
struct btrfs_key search_key;
|
||||
u64 search_start = dirid;
|
||||
|
||||
path = btrfs_alloc_path();
|
||||
BUG_ON(!path);
|
||||
search_key.flags = 0;
|
||||
btrfs_set_key_type(&search_key, BTRFS_INODE_MAP_ITEM_KEY);
|
||||
|
||||
search_start = fs_root->fs_info->last_inode_alloc;
|
||||
search_start = root->last_inode_alloc;
|
||||
search_start = max(search_start, BTRFS_FIRST_FREE_OBJECTID);
|
||||
search_key.objectid = search_start;
|
||||
search_key.offset = 0;
|
||||
@ -108,7 +104,7 @@ int btrfs_find_free_objectid(struct btrfs_trans_handle *trans,
|
||||
}
|
||||
// FIXME -ENOSPC
|
||||
found:
|
||||
root->fs_info->last_inode_alloc = *objectid;
|
||||
root->last_inode_alloc = *objectid;
|
||||
btrfs_release_path(root, path);
|
||||
btrfs_free_path(path);
|
||||
BUG_ON(*objectid < search_start);
|
||||
@ -118,56 +114,3 @@ error:
|
||||
btrfs_free_path(path);
|
||||
return ret;
|
||||
}
|
||||
|
||||
int btrfs_insert_inode_map(struct btrfs_trans_handle *trans,
|
||||
struct btrfs_root *fs_root,
|
||||
u64 objectid, struct btrfs_key *location)
|
||||
{
|
||||
int ret = 0;
|
||||
struct btrfs_path *path;
|
||||
struct btrfs_inode_map_item *inode_item;
|
||||
struct btrfs_key key;
|
||||
struct btrfs_root *inode_root = fs_root->fs_info->inode_root;
|
||||
|
||||
key.objectid = objectid;
|
||||
key.flags = 0;
|
||||
btrfs_set_key_type(&key, BTRFS_INODE_MAP_ITEM_KEY);
|
||||
key.offset = 0;
|
||||
path = btrfs_alloc_path();
|
||||
BUG_ON(!path);
|
||||
btrfs_init_path(path);
|
||||
ret = btrfs_insert_empty_item(trans, inode_root, path, &key,
|
||||
sizeof(struct btrfs_inode_map_item));
|
||||
if (ret)
|
||||
goto out;
|
||||
|
||||
inode_item = btrfs_item_ptr(btrfs_buffer_leaf(path->nodes[0]),
|
||||
path->slots[0], struct btrfs_inode_map_item);
|
||||
btrfs_cpu_key_to_disk(&inode_item->key, location);
|
||||
btrfs_mark_buffer_dirty(path->nodes[0]);
|
||||
if (objectid > fs_root->fs_info->highest_inode)
|
||||
fs_root->fs_info->highest_inode = objectid;
|
||||
out:
|
||||
btrfs_release_path(inode_root, path);
|
||||
btrfs_free_path(path);
|
||||
return ret;
|
||||
}
|
||||
|
||||
int btrfs_lookup_inode_map(struct btrfs_trans_handle *trans,
|
||||
struct btrfs_root *fs_root, struct btrfs_path *path,
|
||||
u64 objectid, int mod)
|
||||
{
|
||||
int ret;
|
||||
struct btrfs_key key;
|
||||
int ins_len = mod < 0 ? -1 : 0;
|
||||
int cow = mod != 0;
|
||||
struct btrfs_root *inode_root = fs_root->fs_info->inode_root;
|
||||
|
||||
key.objectid = objectid;
|
||||
key.flags = 0;
|
||||
key.offset = 0;
|
||||
btrfs_set_key_type(&key, BTRFS_INODE_MAP_ITEM_KEY);
|
||||
ret = btrfs_search_slot(trans, inode_root, &key, path, ins_len, cow);
|
||||
return ret;
|
||||
}
|
||||
|
||||
|
||||
@ -10,7 +10,6 @@ void btrfs_print_leaf(struct btrfs_root *root, struct btrfs_leaf *l)
|
||||
struct btrfs_extent_item *ei;
|
||||
struct btrfs_root_item *ri;
|
||||
struct btrfs_dir_item *di;
|
||||
struct btrfs_inode_map_item *mi;
|
||||
struct btrfs_inode_item *ii;
|
||||
u32 type;
|
||||
|
||||
@ -54,13 +53,6 @@ void btrfs_print_leaf(struct btrfs_root *root, struct btrfs_leaf *l)
|
||||
printk("\t\textent data refs %u owner %Lu\n",
|
||||
btrfs_extent_refs(ei), btrfs_extent_owner(ei));
|
||||
break;
|
||||
case BTRFS_INODE_MAP_ITEM_KEY:
|
||||
mi = btrfs_item_ptr(l, i, struct btrfs_inode_map_item);
|
||||
printk("\t\tinode map key %Lu %u %Lu\n",
|
||||
btrfs_disk_key_objectid(&mi->key),
|
||||
btrfs_disk_key_flags(&mi->key),
|
||||
btrfs_disk_key_offset(&mi->key));
|
||||
break;
|
||||
case BTRFS_STRING_ITEM_KEY:
|
||||
printk("\t\titem data %.*s\n", btrfs_item_size(item),
|
||||
btrfs_leaf_data(l) + btrfs_item_offset(item));
|
||||
|
||||
@ -45,14 +45,6 @@ static struct inode_operations btrfs_file_inode_operations;
|
||||
static struct address_space_operations btrfs_aops;
|
||||
static struct file_operations btrfs_file_operations;
|
||||
|
||||
static int check_inode(struct inode *inode)
|
||||
{
|
||||
struct btrfs_inode *ei = BTRFS_I(inode);
|
||||
WARN_ON(ei->magic != 0xDEADBEEF);
|
||||
WARN_ON(ei->magic2 != 0xDEADBEAF);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void btrfs_read_locked_inode(struct inode *inode)
|
||||
{
|
||||
struct btrfs_path *path;
|
||||
@ -66,15 +58,12 @@ static void btrfs_read_locked_inode(struct inode *inode)
|
||||
btrfs_init_path(path);
|
||||
mutex_lock(&root->fs_info->fs_mutex);
|
||||
|
||||
check_inode(inode);
|
||||
|
||||
memcpy(&location, &BTRFS_I(inode)->location, sizeof(location));
|
||||
ret = btrfs_lookup_inode(NULL, root, path, &location, 0);
|
||||
if (ret) {
|
||||
btrfs_free_path(path);
|
||||
goto make_bad;
|
||||
}
|
||||
check_inode(inode);
|
||||
inode_item = btrfs_item_ptr(btrfs_buffer_leaf(path->nodes[0]),
|
||||
path->slots[0],
|
||||
struct btrfs_inode_item);
|
||||
@ -97,7 +86,7 @@ static void btrfs_read_locked_inode(struct inode *inode)
|
||||
inode_item = NULL;
|
||||
|
||||
mutex_unlock(&root->fs_info->fs_mutex);
|
||||
check_inode(inode);
|
||||
|
||||
switch (inode->i_mode & S_IFMT) {
|
||||
#if 0
|
||||
default:
|
||||
@ -121,7 +110,6 @@ static void btrfs_read_locked_inode(struct inode *inode)
|
||||
// inode->i_op = &page_symlink_inode_operations;
|
||||
break;
|
||||
}
|
||||
check_inode(inode);
|
||||
return;
|
||||
|
||||
make_bad:
|
||||
@ -272,10 +260,7 @@ static int btrfs_free_inode(struct btrfs_trans_handle *trans,
|
||||
struct btrfs_root *root,
|
||||
struct inode *inode)
|
||||
{
|
||||
u64 objectid = inode->i_ino;
|
||||
struct btrfs_path *path;
|
||||
struct btrfs_inode_map_item *map;
|
||||
struct btrfs_key stat_data_key;
|
||||
int ret;
|
||||
|
||||
clear_inode(inode);
|
||||
@ -283,26 +268,11 @@ static int btrfs_free_inode(struct btrfs_trans_handle *trans,
|
||||
path = btrfs_alloc_path();
|
||||
BUG_ON(!path);
|
||||
btrfs_init_path(path);
|
||||
ret = btrfs_lookup_inode_map(trans, root, path, objectid, -1);
|
||||
if (ret) {
|
||||
if (ret > 0)
|
||||
ret = -ENOENT;
|
||||
goto error;
|
||||
}
|
||||
map = btrfs_item_ptr(btrfs_buffer_leaf(path->nodes[0]), path->slots[0],
|
||||
struct btrfs_inode_map_item);
|
||||
btrfs_disk_key_to_cpu(&stat_data_key, &map->key);
|
||||
ret = btrfs_del_item(trans, root->fs_info->inode_root, path);
|
||||
BUG_ON(ret);
|
||||
btrfs_release_path(root, path);
|
||||
|
||||
ret = btrfs_lookup_inode(trans, root, path,
|
||||
&BTRFS_I(inode)->location, -1);
|
||||
BUG_ON(ret);
|
||||
ret = btrfs_del_item(trans, root, path);
|
||||
BUG_ON(ret);
|
||||
error:
|
||||
btrfs_release_path(root, path);
|
||||
btrfs_free_path(path);
|
||||
return ret;
|
||||
}
|
||||
@ -432,7 +402,6 @@ static int btrfs_inode_by_name(struct inode *dir, struct dentry *dentry,
|
||||
out:
|
||||
btrfs_release_path(root, path);
|
||||
btrfs_free_path(path);
|
||||
check_inode(dir);
|
||||
return ret;
|
||||
}
|
||||
|
||||
@ -540,9 +509,7 @@ printk("adding new root for inode %lu root %p (found %p)\n", inode->i_ino, sub_r
|
||||
btrfs_read_locked_inode(inode);
|
||||
unlock_new_inode(inode);
|
||||
}
|
||||
check_inode(inode);
|
||||
}
|
||||
check_inode(dir);
|
||||
return d_splice_alias(inode, dentry);
|
||||
}
|
||||
|
||||
@ -566,7 +533,6 @@ static int btrfs_readdir(struct file *filp, void *dirent, filldir_t filldir)
|
||||
/* FIXME, use a real flag for deciding about the key type */
|
||||
if (root->fs_info->tree_root == root)
|
||||
key_type = BTRFS_DIR_ITEM_KEY;
|
||||
|
||||
mutex_lock(&root->fs_info->fs_mutex);
|
||||
key.objectid = inode->i_ino;
|
||||
key.flags = 0;
|
||||
@ -575,9 +541,8 @@ static int btrfs_readdir(struct file *filp, void *dirent, filldir_t filldir)
|
||||
path = btrfs_alloc_path();
|
||||
btrfs_init_path(path);
|
||||
ret = btrfs_search_slot(NULL, root, &key, path, 0, 0);
|
||||
if (ret < 0) {
|
||||
if (ret < 0)
|
||||
goto err;
|
||||
}
|
||||
advance = 0;
|
||||
while(1) {
|
||||
leaf = btrfs_buffer_leaf(path->nodes[0]);
|
||||
@ -601,8 +566,7 @@ static int btrfs_readdir(struct file *filp, void *dirent, filldir_t filldir)
|
||||
if (btrfs_disk_key_objectid(&item->key) != key.objectid)
|
||||
break;
|
||||
if (key_type == BTRFS_DIR_INDEX_KEY &&
|
||||
btrfs_disk_key_offset(&item->key) >
|
||||
root->fs_info->highest_inode)
|
||||
btrfs_disk_key_offset(&item->key) > root->highest_inode)
|
||||
break;
|
||||
if (btrfs_disk_key_type(&item->key) != key_type)
|
||||
continue;
|
||||
@ -707,7 +671,6 @@ static void fill_inode_item(struct btrfs_inode_item *item,
|
||||
btrfs_set_timespec_nsec(&item->ctime, inode->i_ctime.tv_nsec);
|
||||
btrfs_set_inode_nblocks(item, inode->i_blocks);
|
||||
btrfs_set_inode_generation(item, inode->i_generation);
|
||||
check_inode(inode);
|
||||
}
|
||||
|
||||
static int btrfs_update_inode(struct btrfs_trans_handle *trans,
|
||||
@ -721,7 +684,6 @@ static int btrfs_update_inode(struct btrfs_trans_handle *trans,
|
||||
path = btrfs_alloc_path();
|
||||
BUG_ON(!path);
|
||||
btrfs_init_path(path);
|
||||
|
||||
ret = btrfs_lookup_inode(trans, root, path,
|
||||
&BTRFS_I(inode)->location, 1);
|
||||
if (ret) {
|
||||
@ -736,11 +698,11 @@ static int btrfs_update_inode(struct btrfs_trans_handle *trans,
|
||||
|
||||
fill_inode_item(inode_item, inode);
|
||||
btrfs_mark_buffer_dirty(path->nodes[0]);
|
||||
ret = 0;
|
||||
failed:
|
||||
btrfs_release_path(root, path);
|
||||
btrfs_free_path(path);
|
||||
check_inode(inode);
|
||||
return 0;
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int btrfs_write_inode(struct inode *inode, int wait)
|
||||
@ -757,7 +719,6 @@ static int btrfs_write_inode(struct inode *inode, int wait)
|
||||
else
|
||||
btrfs_end_transaction(trans, root);
|
||||
mutex_unlock(&root->fs_info->fs_mutex);
|
||||
check_inode(inode);
|
||||
return ret;
|
||||
}
|
||||
|
||||
@ -767,7 +728,7 @@ static struct inode *btrfs_new_inode(struct btrfs_trans_handle *trans,
|
||||
struct inode *inode;
|
||||
struct btrfs_inode_item inode_item;
|
||||
struct btrfs_root *root = BTRFS_I(dir)->root;
|
||||
struct btrfs_key *key;
|
||||
struct btrfs_key *location;
|
||||
int ret;
|
||||
u64 objectid;
|
||||
|
||||
@ -776,8 +737,6 @@ static struct inode *btrfs_new_inode(struct btrfs_trans_handle *trans,
|
||||
return ERR_PTR(-ENOMEM);
|
||||
|
||||
BTRFS_I(inode)->root = BTRFS_I(dir)->root;
|
||||
key = &BTRFS_I(inode)->location;
|
||||
check_inode(inode);
|
||||
ret = btrfs_find_free_objectid(trans, root, dir->i_ino, &objectid);
|
||||
BUG_ON(ret);
|
||||
|
||||
@ -788,20 +747,16 @@ static struct inode *btrfs_new_inode(struct btrfs_trans_handle *trans,
|
||||
inode->i_blocks = 0;
|
||||
inode->i_mtime = inode->i_atime = inode->i_ctime = CURRENT_TIME;
|
||||
fill_inode_item(&inode_item, inode);
|
||||
|
||||
key->objectid = objectid;
|
||||
key->flags = 0;
|
||||
key->offset = 0;
|
||||
btrfs_set_key_type(key, BTRFS_INODE_ITEM_KEY);
|
||||
ret = btrfs_insert_inode_map(trans, root, objectid, key);
|
||||
BUG_ON(ret);
|
||||
location = &BTRFS_I(inode)->location;
|
||||
location->objectid = objectid;
|
||||
location->flags = 0;
|
||||
location->offset = 0;
|
||||
btrfs_set_key_type(location, BTRFS_INODE_ITEM_KEY);
|
||||
|
||||
ret = btrfs_insert_inode(trans, root, objectid, &inode_item);
|
||||
BUG_ON(ret);
|
||||
|
||||
insert_inode_hash(inode);
|
||||
check_inode(inode);
|
||||
check_inode(dir);
|
||||
return inode;
|
||||
}
|
||||
|
||||
@ -825,8 +780,6 @@ static int btrfs_add_link(struct btrfs_trans_handle *trans,
|
||||
ret = btrfs_update_inode(trans, root,
|
||||
dentry->d_parent->d_inode);
|
||||
}
|
||||
check_inode(inode);
|
||||
check_inode(dentry->d_parent->d_inode);
|
||||
return ret;
|
||||
}
|
||||
|
||||
@ -840,7 +793,6 @@ static int btrfs_add_nondir(struct btrfs_trans_handle *trans,
|
||||
}
|
||||
if (err > 0)
|
||||
err = -EEXIST;
|
||||
check_inode(inode);
|
||||
return err;
|
||||
}
|
||||
|
||||
@ -872,8 +824,6 @@ static int btrfs_create(struct inode *dir, struct dentry *dentry,
|
||||
out_unlock:
|
||||
btrfs_end_transaction(trans, root);
|
||||
mutex_unlock(&root->fs_info->fs_mutex);
|
||||
check_inode(inode);
|
||||
check_inode(dir);
|
||||
|
||||
if (drop_inode) {
|
||||
inode_dec_link_count(inode);
|
||||
@ -1701,20 +1651,14 @@ static int create_snapshot(struct btrfs_root *root, char *name, int namelen)
|
||||
ret = btrfs_update_inode(trans, root, root->inode);
|
||||
BUG_ON(ret);
|
||||
|
||||
ret = btrfs_find_free_objectid(trans, root, 0, &objectid);
|
||||
ret = btrfs_find_free_objectid(trans, root->fs_info->tree_root,
|
||||
0, &objectid);
|
||||
BUG_ON(ret);
|
||||
|
||||
memset(&new_root_item, 0, sizeof(new_root_item));
|
||||
memcpy(&new_root_item, &root->root_item,
|
||||
sizeof(new_root_item));
|
||||
|
||||
key.objectid = objectid;
|
||||
key.flags = 0;
|
||||
key.offset = 0;
|
||||
btrfs_set_key_type(&key, BTRFS_INODE_ITEM_KEY);
|
||||
ret = btrfs_insert_inode_map(trans, root, objectid, &key);
|
||||
BUG_ON(ret);
|
||||
|
||||
key.objectid = objectid;
|
||||
key.offset = 1;
|
||||
key.flags = 0;
|
||||
@ -1791,21 +1735,14 @@ static struct inode *btrfs_alloc_inode(struct super_block *sb)
|
||||
ei = kmem_cache_alloc(btrfs_inode_cachep, GFP_NOFS);
|
||||
if (!ei)
|
||||
return NULL;
|
||||
ei->magic = 0xDEADBEEF;
|
||||
ei->magic2 = 0xDEADBEAF;
|
||||
return &ei->vfs_inode;
|
||||
}
|
||||
|
||||
static void btrfs_destroy_inode(struct inode *inode)
|
||||
{
|
||||
struct btrfs_inode *ei = BTRFS_I(inode);
|
||||
WARN_ON(ei->magic != 0xDEADBEEF);
|
||||
WARN_ON(ei->magic2 != 0xDEADBEAF);
|
||||
WARN_ON(!list_empty(&inode->i_dentry));
|
||||
WARN_ON(inode->i_data.nrpages);
|
||||
|
||||
ei->magic = 0;
|
||||
ei->magic2 = 0;
|
||||
kmem_cache_free(btrfs_inode_cachep, BTRFS_I(inode));
|
||||
}
|
||||
|
||||
|
||||
@ -115,14 +115,7 @@ int btrfs_commit_tree_roots(struct btrfs_trans_handle *trans,
|
||||
struct btrfs_fs_info *fs_info = root->fs_info;
|
||||
struct btrfs_root *tree_root = fs_info->tree_root;
|
||||
struct btrfs_root *extent_root = fs_info->extent_root;
|
||||
struct btrfs_root *inode_root = fs_info->inode_root;
|
||||
|
||||
btrfs_set_root_blocknr(&inode_root->root_item,
|
||||
inode_root->node->b_blocknr);
|
||||
ret = btrfs_update_root(trans, tree_root,
|
||||
&inode_root->root_key,
|
||||
&inode_root->root_item);
|
||||
BUG_ON(ret);
|
||||
while(1) {
|
||||
old_extent_block = btrfs_root_blocknr(&extent_root->root_item);
|
||||
if (old_extent_block == extent_root->node->b_blocknr)
|
||||
|
||||
Loading…
Reference in New Issue
Block a user