/*
* compare two keys in a memcmp fashion
*/
-int btrfs_comp_keys(struct btrfs_disk_key *disk, struct btrfs_key *k2)
+static int btrfs_comp_keys(struct btrfs_disk_key *disk, struct btrfs_key *k2)
{
struct btrfs_key k1;
/* extent-tree.c */
int btrfs_fix_block_accounting(struct btrfs_trans_handle *trans,
struct btrfs_root *root);
-int btrfs_check_block_accounting(struct btrfs_root *root);
void btrfs_pin_extent(struct btrfs_fs_info *fs_info, u64 bytenr, u64 num_bytes);
void btrfs_unpin_extent(struct btrfs_fs_info *fs_info,
u64 bytenr, u64 num_bytes);
int btrfs_extent_post_op(struct btrfs_trans_handle *trans,
struct btrfs_root *root);
-int btrfs_copy_pinned(struct btrfs_root *root, struct extent_io_tree *copy);
struct btrfs_block_group_cache *btrfs_lookup_block_group(struct
btrfs_fs_info *info,
u64 bytenr);
struct btrfs_block_group_cache *btrfs_lookup_first_block_group(struct
btrfs_fs_info *info,
u64 bytenr);
-struct btrfs_block_group_cache *btrfs_find_block_group(struct btrfs_root *root,
- struct btrfs_block_group_cache
- *hint, u64 search_start,
- int data, int owner);
struct extent_buffer *btrfs_alloc_free_block(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
u32 blocksize, u64 root_objectid,
int btrfs_previous_item(struct btrfs_root *root,
struct btrfs_path *path, u64 min_objectid,
int type);
-int btrfs_comp_keys(struct btrfs_disk_key *disk, struct btrfs_key *k2);
int btrfs_cow_block(struct btrfs_trans_handle *trans,
struct btrfs_root *root, struct extent_buffer *buf,
struct extent_buffer *parent, int parent_slot,
u64 root_id, u8 type, u64 ref_id,
u64 dirid, u64 sequence,
const char *name, int name_len);
-int btrfs_del_root(struct btrfs_trans_handle *trans, struct btrfs_root *root,
- struct btrfs_key *key);
int btrfs_insert_root(struct btrfs_trans_handle *trans, struct btrfs_root
*root, struct btrfs_key *key, struct btrfs_root_item
*item);
struct btrfs_path *path, u64 dir,
const char *name, int name_len,
int mod);
-struct btrfs_dir_item *
-btrfs_lookup_dir_index_item(struct btrfs_trans_handle *trans,
- struct btrfs_root *root,
- struct btrfs_path *path, u64 dir,
- u64 objectid, const char *name, int name_len,
- int mod);
-struct btrfs_dir_item *btrfs_match_dir_item_name(struct btrfs_root *root,
- struct btrfs_path *path,
- const char *name, int name_len);
-int btrfs_delete_one_dir_name(struct btrfs_trans_handle *trans,
- struct btrfs_root *root,
- struct btrfs_path *path,
- struct btrfs_dir_item *di);
int btrfs_insert_xattr_item(struct btrfs_trans_handle *trans,
struct btrfs_root *root, const char *name,
u16 name_len, const void *data, u16 data_len,
u64 dir);
-struct btrfs_dir_item *btrfs_lookup_xattr(struct btrfs_trans_handle *trans,
- struct btrfs_root *root,
- struct btrfs_path *path, u64 dir,
- const char *name, u16 name_len,
- int mod);
/* inode-map.c */
int btrfs_find_free_objectid(struct btrfs_trans_handle *trans,
struct btrfs_root *fs_root,
u64 dirid, u64 *objectid);
-int btrfs_find_highest_inode(struct btrfs_root *fs_root, u64 *objectid);
/* inode-item.c */
int btrfs_insert_inode_ref(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
const char *name, int name_len,
u64 inode_objectid, u64 ref_objectid, u64 index);
-int btrfs_del_inode_ref(struct btrfs_trans_handle *trans,
- struct btrfs_root *root,
- const char *name, int name_len,
- u64 inode_objectid, u64 ref_objectid);
-int btrfs_insert_empty_inode(struct btrfs_trans_handle *trans,
- struct btrfs_root *root,
- struct btrfs_path *path, u64 objectid);
int btrfs_insert_inode(struct btrfs_trans_handle *trans, struct btrfs_root
*root, u64 objectid, struct btrfs_inode_item
*inode_item);
int btrfs_insert_inline_extent(struct btrfs_trans_handle *trans,
struct btrfs_root *root, u64 objectid,
u64 offset, char *buffer, size_t size);
-int btrfs_lookup_file_extent(struct btrfs_trans_handle *trans,
- struct btrfs_root *root,
- struct btrfs_path *path, u64 objectid,
- u64 bytenr, int mod);
int btrfs_csum_file_block(struct btrfs_trans_handle *trans,
struct btrfs_root *root, u64 alloc_end,
u64 bytenr, char *data, size_t len);
-struct btrfs_csum_item *btrfs_lookup_csum(struct btrfs_trans_handle *trans,
- struct btrfs_root *root,
- struct btrfs_path *path,
- u64 bytenr, int cow);
int btrfs_csum_truncate(struct btrfs_trans_handle *trans,
struct btrfs_root *root, struct btrfs_path *path,
u64 isize);
#include "hash.h"
#include "transaction.h"
+static struct btrfs_dir_item *btrfs_match_dir_item_name(struct btrfs_root *root,
+ struct btrfs_path *path,
+ const char *name, int name_len);
+
static struct btrfs_dir_item *insert_with_overflow(struct btrfs_trans_handle
*trans,
struct btrfs_root *root,
return btrfs_match_dir_item_name(root, path, name, name_len);
}
-struct btrfs_dir_item *
-btrfs_lookup_dir_index_item(struct btrfs_trans_handle *trans,
- struct btrfs_root *root,
- struct btrfs_path *path, u64 dir,
- u64 objectid, const char *name, int name_len,
- int mod)
-{
- int ret;
- struct btrfs_key key;
- int ins_len = mod < 0 ? -1 : 0;
- int cow = mod != 0;
-
- key.objectid = dir;
- btrfs_set_key_type(&key, BTRFS_DIR_INDEX_KEY);
- key.offset = objectid;
-
- ret = btrfs_search_slot(trans, root, &key, path, ins_len, cow);
- if (ret < 0)
- return ERR_PTR(ret);
- if (ret > 0)
- return ERR_PTR(-ENOENT);
- return btrfs_match_dir_item_name(root, path, name, name_len);
-}
-
-struct btrfs_dir_item *btrfs_lookup_xattr(struct btrfs_trans_handle *trans,
- struct btrfs_root *root,
- struct btrfs_path *path, u64 dir,
- const char *name, u16 name_len,
- int mod)
-{
- int ret;
- struct btrfs_key key;
- int ins_len = mod < 0 ? -1 : 0;
- int cow = mod != 0;
- struct btrfs_key found_key;
- struct extent_buffer *leaf;
-
- key.objectid = dir;
- btrfs_set_key_type(&key, BTRFS_XATTR_ITEM_KEY);
- key.offset = btrfs_name_hash(name, name_len);
- ret = btrfs_search_slot(trans, root, &key, path, ins_len, cow);
- if (ret < 0)
- return ERR_PTR(ret);
- if (ret > 0) {
- if (path->slots[0] == 0)
- return NULL;
- path->slots[0]--;
- }
-
- leaf = path->nodes[0];
- btrfs_item_key_to_cpu(leaf, &found_key, path->slots[0]);
-
- if (found_key.objectid != dir ||
- btrfs_key_type(&found_key) != BTRFS_XATTR_ITEM_KEY ||
- found_key.offset != key.offset)
- return NULL;
-
- return btrfs_match_dir_item_name(root, path, name, name_len);
-}
-
-struct btrfs_dir_item *btrfs_match_dir_item_name(struct btrfs_root *root,
+static struct btrfs_dir_item *btrfs_match_dir_item_name(struct btrfs_root *root,
struct btrfs_path *path,
const char *name, int name_len)
{
}
return NULL;
}
-
-int btrfs_delete_one_dir_name(struct btrfs_trans_handle *trans,
- struct btrfs_root *root,
- struct btrfs_path *path,
- struct btrfs_dir_item *di)
-{
-
- struct extent_buffer *leaf;
- u32 sub_item_len;
- u32 item_len;
- int ret = 0;
-
- leaf = path->nodes[0];
- sub_item_len = sizeof(*di) + btrfs_dir_name_len(leaf, di) +
- btrfs_dir_data_len(leaf, di);
- item_len = btrfs_item_size_nr(leaf, path->slots[0]);
- if (sub_item_len == item_len) {
- ret = btrfs_del_item(trans, root, path);
- } else {
- /* MARKER */
- unsigned long ptr = (unsigned long)di;
- unsigned long start;
-
- start = btrfs_item_ptr_offset(leaf, path->slots[0]);
- memmove_extent_buffer(leaf, ptr, ptr + sub_item_len,
- item_len - (ptr + sub_item_len - start));
- ret = btrfs_truncate_item(trans, root, path,
- item_len - sub_item_len, 1);
- }
- return ret;
-}
return __csum_tree_block_size(buf, csum_size, 1, 1);
}
-int csum_tree_block(struct btrfs_root *root, struct extent_buffer *buf,
- int verify)
+static int csum_tree_block(struct btrfs_root *root, struct extent_buffer *buf,
+ int verify)
{
u16 csum_size =
btrfs_super_csum_size(root->fs_info->super_copy);
return NULL;
}
-int write_tree_block(struct btrfs_trans_handle *trans, struct btrfs_root *root,
- struct extent_buffer *eb)
+static int write_tree_block(struct btrfs_trans_handle *trans,
+ struct btrfs_root *root,
+ struct extent_buffer *eb)
{
int ret;
int dev_nr;
return transid > 0 ? 0 : -1;
}
-int write_dev_supers(struct btrfs_root *root, struct btrfs_super_block *sb,
- struct btrfs_device *device)
+static int write_dev_supers(struct btrfs_root *root,
+ struct btrfs_super_block *sb,
+ struct btrfs_device *device)
{
u64 bytenr;
u32 crc;
u32 blocksize, u64 parent_transid);
int readahead_tree_block(struct btrfs_root *root, u64 bytenr, u32 blocksize,
u64 parent_transid);
-int write_tree_block(struct btrfs_trans_handle *trans, struct btrfs_root *root,
- struct extent_buffer *eb);
struct extent_buffer *btrfs_find_create_tree_block(struct btrfs_root *root,
u64 bytenr, u32 blocksize);
int csum_tree_block_size(struct extent_buffer *buf, u16 csum_sectorsize,
int verify);
int verify_tree_block_csum_silent(struct extent_buffer *buf, u16 csum_size);
-int csum_tree_block(struct btrfs_root *root, struct extent_buffer *buf,
- int verify);
int btrfs_read_buffer(struct extent_buffer *buf, u64 parent_transid);
#endif
btrfs_root *extent_root);
static int del_pending_extents(struct btrfs_trans_handle *trans, struct
btrfs_root *extent_root);
+static struct btrfs_block_group_cache *
+btrfs_find_block_group(struct btrfs_root *root, struct btrfs_block_group_cache
+ *hint, u64 search_start, int data, int owner);
static int remove_sb_from_cache(struct btrfs_root *root,
struct btrfs_block_group_cache *cache)
return bits;
}
-struct btrfs_block_group_cache *btrfs_find_block_group(struct btrfs_root *root,
- struct btrfs_block_group_cache
- *hint, u64 search_start,
- int data, int owner)
+static struct btrfs_block_group_cache *
+btrfs_find_block_group(struct btrfs_root *root, struct btrfs_block_group_cache
+ *hint, u64 search_start, int data, int owner)
{
struct btrfs_block_group_cache *cache;
struct extent_io_tree *block_group_cache;
return 0;
}
-int btrfs_copy_pinned(struct btrfs_root *root, struct extent_io_tree *copy)
-{
- u64 last = 0;
- u64 start;
- u64 end;
- struct extent_io_tree *pinned_extents = &root->fs_info->pinned_extents;
- int ret;
-
- while(1) {
- ret = find_first_extent_bit(pinned_extents, last,
- &start, &end, EXTENT_DIRTY);
- if (ret)
- break;
- set_extent_dirty(copy, start, end, GFP_NOFS);
- last = end + 1;
- }
- return 0;
-}
-
int btrfs_finish_extent_commit(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
struct extent_io_tree *unpin)
return 0;
}
-int find_first_block_group(struct btrfs_root *root, struct btrfs_path *path,
- struct btrfs_key *key)
+static int find_first_block_group(struct btrfs_root *root,
+ struct btrfs_path *path, struct btrfs_key *key)
{
int ret;
struct btrfs_key found_key;
alloc, mark_free);
}
-static int btrfs_count_extents_in_block_group(struct btrfs_root *root,
- struct btrfs_path *path, u64 start,
- u64 len,
- u64 *total)
-{
- struct btrfs_key key;
- struct extent_buffer *leaf;
- u64 bytes_used = 0;
- int ret;
- int slot;
-
- key.offset = 0;
- key.objectid = start;
- btrfs_set_key_type(&key, BTRFS_EXTENT_ITEM_KEY);
- ret = btrfs_search_slot(NULL, root->fs_info->extent_root,
- &key, path, 0, 0);
- if (ret < 0)
- return ret;
- while(1) {
- leaf = path->nodes[0];
- slot = path->slots[0];
- if (slot >= btrfs_header_nritems(leaf)) {
- ret = btrfs_next_leaf(root, path);
- if (ret < 0)
- return ret;
- if (ret > 0)
- break;
- leaf = path->nodes[0];
- slot = path->slots[0];
- }
- btrfs_item_key_to_cpu(leaf, &key, slot);
- if (key.objectid > start + len)
- break;
- if (key.type == BTRFS_EXTENT_ITEM_KEY)
- bytes_used += key.offset;
- if (key.type == BTRFS_METADATA_ITEM_KEY)
- bytes_used += root->leafsize;
- path->slots[0]++;
- }
- *total = bytes_used;
- btrfs_release_path(path);
- return 0;
-}
-
-int btrfs_check_block_accounting(struct btrfs_root *root)
-{
- int ret;
- u64 start = 0;
- u64 bytes_used = 0;
- struct btrfs_path path;
- struct btrfs_block_group_cache *cache;
- struct btrfs_fs_info *fs_info = root->fs_info;
-
- btrfs_init_path(&path);
-
- while(1) {
- cache = btrfs_lookup_block_group(fs_info, start);
- if (!cache)
- break;
-
- ret = btrfs_count_extents_in_block_group(root, &path,
- cache->key.objectid,
- cache->key.offset,
- &bytes_used);
-
- if (ret == 0) {
- u64 on_disk = btrfs_block_group_used(&cache->item);
- if (on_disk != bytes_used) {
- fprintf(stderr, "bad block group accounting found %llu "
- "expected %llu block group %llu\n",
- (unsigned long long)bytes_used,
- (unsigned long long)on_disk,
- (unsigned long long)cache->key.objectid);
- }
- }
- start = cache->key.objectid + cache->key.offset;
-
- cache->space_info->bytes_used = 0;
- }
- return 0;
-}
-
/*
* Fixup block accounting. The initial block accounting created by
* make_block_groups isn't accuracy in this case.
#include "ctree.h"
#include "volumes.h"
-u64 cache_soft_max = 1024 * 1024 * 256;
-u64 cache_hard_max = 1 * 1024 * 1024 * 1024;
+static u64 cache_soft_max = 1024 * 1024 * 256;
+static u64 cache_hard_max = 1 * 1024 * 1024 * 1024;
void extent_io_tree_init(struct extent_io_tree *tree)
{
memcpy(dst->data + dst_offset, src->data + src_offset, len);
}
-void memcpy_extent_buffer(struct extent_buffer *dst, unsigned long dst_offset,
- unsigned long src_offset, unsigned long len)
-{
- memcpy(dst->data + dst_offset, dst->data + src_offset, len);
-}
-
void memmove_extent_buffer(struct extent_buffer *dst, unsigned long dst_offset,
unsigned long src_offset, unsigned long len)
{
void copy_extent_buffer(struct extent_buffer *dst, struct extent_buffer *src,
unsigned long dst_offset, unsigned long src_offset,
unsigned long len);
-void memcpy_extent_buffer(struct extent_buffer *dst, unsigned long dst_offset,
- unsigned long src_offset, unsigned long len);
void memmove_extent_buffer(struct extent_buffer *dst, unsigned long dst_offset,
unsigned long src_offset, unsigned long len);
void memset_extent_buffer(struct extent_buffer *eb, char c,
#define MAX_CSUM_ITEMS(r,size) ((((BTRFS_LEAF_DATA_SIZE(r) - \
sizeof(struct btrfs_item) * 2) / \
size) - 1))
-int btrfs_create_file(struct btrfs_trans_handle *trans,
- struct btrfs_root *root, u64 dirid, u64 *objectid)
-{
- return 0;
-}
-
int btrfs_insert_file_extent(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
u64 objectid, u64 pos, u64 offset,
return err;
}
-struct btrfs_csum_item *btrfs_lookup_csum(struct btrfs_trans_handle *trans,
- struct btrfs_root *root,
- struct btrfs_path *path,
- u64 bytenr, int cow)
+static struct btrfs_csum_item *
+btrfs_lookup_csum(struct btrfs_trans_handle *trans,
+ struct btrfs_root *root,
+ struct btrfs_path *path,
+ u64 bytenr, int cow)
{
int ret;
struct btrfs_key file_key;
return ERR_PTR(ret);
}
-int btrfs_lookup_file_extent(struct btrfs_trans_handle *trans,
- struct btrfs_root *root,
- struct btrfs_path *path, u64 objectid,
- u64 offset, int mod)
-{
- int ret;
- struct btrfs_key file_key;
- int ins_len = mod < 0 ? -1 : 0;
- int cow = mod != 0;
-
- file_key.objectid = objectid;
- file_key.offset = offset;
- btrfs_set_key_type(&file_key, BTRFS_EXTENT_DATA_KEY);
- ret = btrfs_search_slot(trans, root, &file_key, path, ins_len, cow);
- return ret;
-}
-
int btrfs_csum_file_block(struct btrfs_trans_handle *trans,
struct btrfs_root *root, u64 alloc_end,
u64 bytenr, char *data, size_t len)
}
-int __load_free_space_cache(struct btrfs_root *root,
+static int __load_free_space_cache(struct btrfs_root *root,
struct btrfs_free_space_ctl *ctl,
struct btrfs_path *path, u64 offset)
{
#include "disk-io.h"
#include "transaction.h"
-int find_name_in_backref(struct btrfs_path *path, const char * name,
+static int find_name_in_backref(struct btrfs_path *path, const char * name,
int name_len, struct btrfs_inode_ref **ref_ret)
{
struct extent_buffer *leaf;
return 0;
}
-int btrfs_del_inode_ref(struct btrfs_trans_handle *trans,
- struct btrfs_root *root,
- const char *name, int name_len,
- u64 inode_objectid, u64 ref_objectid)
-{
- struct btrfs_path *path;
- struct btrfs_key key;
- struct btrfs_inode_ref *ref;
- struct extent_buffer *leaf;
- unsigned long ptr;
- unsigned long item_start;
- u32 item_size;
- u32 sub_item_len;
- int ret;
- int del_len = name_len + sizeof(*ref);
-
- key.objectid = inode_objectid;
- key.offset = ref_objectid;
- btrfs_set_key_type(&key, BTRFS_INODE_REF_KEY);
-
- path = btrfs_alloc_path();
- if (!path)
- return -ENOMEM;
-
- ret = btrfs_search_slot(trans, root, &key, path, -1, 1);
- if (ret > 0) {
- ret = -ENOENT;
- goto out;
- } else if (ret < 0) {
- goto out;
- }
- if (!find_name_in_backref(path, name, name_len, &ref)) {
- ret = -ENOENT;
- goto out;
- }
- leaf = path->nodes[0];
- item_size = btrfs_item_size_nr(leaf, path->slots[0]);
- if (del_len == item_size) {
- ret = btrfs_del_item(trans, root, path);
- goto out;
- }
- ptr = (unsigned long)ref;
- sub_item_len = name_len + sizeof(*ref);
- item_start = btrfs_item_ptr_offset(leaf, path->slots[0]);
- memmove_extent_buffer(leaf, ptr, ptr + sub_item_len,
- item_size - (ptr + sub_item_len - item_start));
- ret = btrfs_truncate_item(trans, root, path,
- item_size - sub_item_len, 1);
- BUG_ON(ret);
-out:
- btrfs_free_path(path);
- return ret;
-}
-
int btrfs_insert_inode_ref(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
const char *name, int name_len,
return ret;
}
-int btrfs_insert_empty_inode(struct btrfs_trans_handle *trans,
- struct btrfs_root *root,
- struct btrfs_path *path, u64 objectid)
-{
- struct btrfs_key key;
- int ret;
- key.objectid = objectid;
- btrfs_set_key_type(&key, BTRFS_INODE_ITEM_KEY);
- key.offset = 0;
-
- ret = btrfs_insert_empty_item(trans, root, path, &key,
- sizeof(struct btrfs_inode_item));
- if (ret == 0 && objectid > root->highest_inode)
- root->highest_inode = objectid;
- return ret;
-}
-
int btrfs_lookup_inode(struct btrfs_trans_handle *trans, struct btrfs_root
*root, struct btrfs_path *path,
struct btrfs_key *location, int mod)
#include "disk-io.h"
#include "transaction.h"
-int btrfs_find_highest_inode(struct btrfs_root *root, u64 *objectid)
-{
- struct btrfs_path *path;
- int ret;
- struct extent_buffer *l;
- struct btrfs_key search_key;
- struct btrfs_key found_key;
- int slot;
-
- path = btrfs_alloc_path();
- BUG_ON(!path);
-
- search_key.objectid = (u64)-1;
- search_key.offset = (u64)-1;
- ret = btrfs_search_slot(NULL, root, &search_key, path, 0, 0);
- if (ret < 0)
- goto error;
- BUG_ON(ret == 0);
- if (path->slots[0] > 0) {
- slot = path->slots[0] - 1;
- l = path->nodes[0];
- btrfs_item_key_to_cpu(l, &found_key, slot);
- *objectid = found_key.objectid;
- } else {
- *objectid = BTRFS_FIRST_FREE_OBJECTID;
- }
- ret = 0;
-error:
- btrfs_free_path(path);
- return ret;
-}
-
/*
* walks the btree of allocated inodes and find a hole.
*/
2 * p->num_excl_copies);
}
-int qgroup_inherit_realloc(struct btrfs_qgroup_inherit **inherit, int n,
- int pos)
+static int
+qgroup_inherit_realloc(struct btrfs_qgroup_inherit **inherit, int n, int pos)
{
struct btrfs_qgroup_inherit *out;
int nitems = 0;
u64 parse_qgroupid(char *p);
int qgroup_inherit_size(struct btrfs_qgroup_inherit *p);
-int qgroup_inherit_realloc(struct btrfs_qgroup_inherit **inherit,
- int incgroups, int inccopies);
int qgroup_inherit_add_group(struct btrfs_qgroup_inherit **inherit, char *arg);
int qgroup_inherit_add_copy(struct btrfs_qgroup_inherit **inherit, char *arg,
int type);
return ret;
}
-int btrfs_del_root(struct btrfs_trans_handle *trans, struct btrfs_root *root,
- struct btrfs_key *key)
-{
- struct btrfs_path *path;
- int ret;
- u32 refs;
- struct btrfs_root_item *ri;
- struct extent_buffer *leaf;
-
- path = btrfs_alloc_path();
- BUG_ON(!path);
- ret = btrfs_search_slot(trans, root, key, path, -1, 1);
- if (ret < 0)
- goto out;
- BUG_ON(ret != 0);
- leaf = path->nodes[0];
- ri = btrfs_item_ptr(leaf, path->slots[0], struct btrfs_root_item);
-
- refs = btrfs_disk_root_refs(leaf, ri);
- BUG_ON(refs != 0);
- ret = btrfs_del_item(trans, root, path);
-out:
- btrfs_release_path(path);
- btrfs_free_path(path);
- return ret;
-}
-
/*
* add a btrfs_root_ref item. type is either BTRFS_ROOT_REF_KEY
* or BTRFS_ROOT_BACKREF_KEY.
return ret;
}
-int btrfs_alloc_dev_extent(struct btrfs_trans_handle *trans,
- struct btrfs_device *device,
- u64 chunk_tree, u64 chunk_objectid,
- u64 chunk_offset,
- u64 num_bytes, u64 *start)
+static int btrfs_alloc_dev_extent(struct btrfs_trans_handle *trans,
+ struct btrfs_device *device,
+ u64 chunk_tree, u64 chunk_objectid,
+ u64 chunk_offset,
+ u64 num_bytes, u64 *start)
{
int ret;
struct btrfs_path *path;
return ret;
}
-void btrfs_mapping_init(struct btrfs_mapping_tree *tree)
-{
- cache_tree_init(&tree->cache_tree);
-}
-
int btrfs_num_copies(struct btrfs_mapping_tree *map_tree, u64 logical, u64 len)
{
struct cache_extent *ce;
return NULL;
}
-int btrfs_bootstrap_super_map(struct btrfs_mapping_tree *map_tree,
- struct btrfs_fs_devices *fs_devices)
-{
- struct map_lookup *map;
- u64 logical = BTRFS_SUPER_INFO_OFFSET;
- u64 length = BTRFS_SUPER_INFO_SIZE;
- int num_stripes = 0;
- int sub_stripes = 0;
- int ret;
- int i;
- struct list_head *cur;
-
- list_for_each(cur, &fs_devices->devices) {
- num_stripes++;
- }
- map = kmalloc(btrfs_map_lookup_size(num_stripes), GFP_NOFS);
- if (!map)
- return -ENOMEM;
-
- map->ce.start = logical;
- map->ce.size = length;
- map->num_stripes = num_stripes;
- map->sub_stripes = sub_stripes;
- map->io_width = length;
- map->io_align = length;
- map->sector_size = length;
- map->stripe_len = length;
- map->type = BTRFS_BLOCK_GROUP_RAID1;
-
- i = 0;
- list_for_each(cur, &fs_devices->devices) {
- struct btrfs_device *device = list_entry(cur,
- struct btrfs_device,
- dev_list);
- map->stripes[i].physical = logical;
- map->stripes[i].dev = device;
- i++;
- }
- ret = insert_cache_extent(&map_tree->cache_tree, &map->ce);
- if (ret == -EEXIST) {
- struct cache_extent *old;
- struct map_lookup *old_map;
- old = lookup_cache_extent(&map_tree->cache_tree,
- logical, length);
- old_map = container_of(old, struct map_lookup, ce);
- remove_cache_extent(&map_tree->cache_tree, old);
- kfree(old_map);
- ret = insert_cache_extent(&map_tree->cache_tree,
- &map->ce);
- }
- BUG_ON(ret);
- return 0;
-}
-
int btrfs_chunk_readonly(struct btrfs_root *root, u64 chunk_offset)
{
struct cache_extent *ce;
#define BTRFS_RAID6_Q_STRIPE ((u64)-1)
-int btrfs_alloc_dev_extent(struct btrfs_trans_handle *trans,
- struct btrfs_device *device,
- u64 chunk_tree, u64 chunk_objectid,
- u64 chunk_offset,
- u64 num_bytes, u64 *start);
int __btrfs_map_block(struct btrfs_mapping_tree *map_tree, int rw,
u64 logical, u64 *length, u64 *type,
struct btrfs_multi_bio **multi_ret, int mirror_num,
struct btrfs_fs_devices **fs_devices_ret,
u64 *total_devs, u64 super_offset);
int btrfs_num_copies(struct btrfs_mapping_tree *map_tree, u64 logical, u64 len);
-int btrfs_bootstrap_super_map(struct btrfs_mapping_tree *map_tree,
- struct btrfs_fs_devices *fs_devices);
struct list_head *btrfs_scanned_uuids(void);
int btrfs_add_system_chunk(struct btrfs_trans_handle *trans,
struct btrfs_root *root, struct btrfs_key *key,
projects / platform / upstream / btrfs-progs.git / commitdiff