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-rw-r--r--fs/btrfs/ctree.h7
-rw-r--r--fs/btrfs/disk-io.c3
-rw-r--r--fs/btrfs/extent-tree.c230
-rw-r--r--fs/btrfs/transaction.c2
-rw-r--r--fs/btrfs/transaction.h2
5 files changed, 49 insertions, 195 deletions
diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h
index 8b7d01597f4..59e09e37ab9 100644
--- a/fs/btrfs/ctree.h
+++ b/fs/btrfs/ctree.h
@@ -299,12 +299,7 @@ struct btrfs_fs_info {
struct radix_tree_root block_group_radix;
struct radix_tree_root block_group_data_radix;
struct radix_tree_root extent_map_radix;
-
- u64 extent_tree_insert[BTRFS_MAX_LEVEL * 6];
- int extent_tree_insert_nr;
- u64 extent_tree_prealloc[BTRFS_MAX_LEVEL * 6];
- int extent_tree_prealloc_nr;
-
+ struct radix_tree_root extent_ins_radix;
u64 generation;
struct btrfs_transaction *running_transaction;
struct btrfs_super_block *disk_super;
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index c948416fea3..192211274ce 100644
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -427,6 +427,7 @@ struct btrfs_root *open_ctree(struct super_block *sb)
init_bit_radix(&fs_info->pinned_radix);
init_bit_radix(&fs_info->pending_del_radix);
init_bit_radix(&fs_info->extent_map_radix);
+ init_bit_radix(&fs_info->extent_ins_radix);
INIT_RADIX_TREE(&fs_info->fs_roots_radix, GFP_NOFS);
INIT_RADIX_TREE(&fs_info->block_group_radix, GFP_KERNEL);
INIT_RADIX_TREE(&fs_info->block_group_data_radix, GFP_KERNEL);
@@ -443,8 +444,6 @@ struct btrfs_root *open_ctree(struct super_block *sb)
fs_info->btree_inode->i_size = sb->s_bdev->bd_inode->i_size;
fs_info->btree_inode->i_mapping->a_ops = &btree_aops;
fs_info->do_barriers = 1;
- fs_info->extent_tree_insert_nr = 0;
- fs_info->extent_tree_prealloc_nr = 0;
fs_info->closing = 0;
INIT_DELAYED_WORK(&fs_info->trans_work, btrfs_transaction_cleaner);
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index f7d76d34fc3..ba50bd7b9a7 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -22,12 +22,6 @@
#include "print-tree.h"
#include "transaction.h"
-static int find_free_extent(struct btrfs_trans_handle *trans, struct btrfs_root
- *orig_root, u64 num_blocks, u64 empty_size,
- u64 search_start,
- u64 search_end, u64 hint_block,
- struct btrfs_key *ins, u64 exclude_start,
- u64 exclude_nr, int data);
static int finish_current_insert(struct btrfs_trans_handle *trans, struct
btrfs_root *extent_root);
static int del_pending_extents(struct btrfs_trans_handle *trans, struct
@@ -174,9 +168,6 @@ static u64 find_search_start(struct btrfs_root *root,
if (cache->data)
goto out;
- if (num > 1) {
- last = max(last, cache->last_prealloc);
- }
again:
ret = cache_block_group(root, cache);
if (ret)
@@ -374,18 +365,12 @@ int btrfs_inc_extent_ref(struct btrfs_trans_handle *trans,
struct btrfs_key key;
struct btrfs_leaf *l;
struct btrfs_extent_item *item;
- struct btrfs_key ins;
u32 refs;
path = btrfs_alloc_path();
if (!path)
return -ENOMEM;
- ret = find_free_extent(trans, root->fs_info->extent_root, 0, 0, 0,
- (u64)-1, 0, &ins, 0, 0, 0);
- if (ret) {
- btrfs_free_path(path);
- return ret;
- }
+
key.objectid = blocknr;
key.flags = 0;
btrfs_set_key_type(&key, BTRFS_EXTENT_ITEM_KEY);
@@ -532,13 +517,7 @@ static int write_one_cache_group(struct btrfs_trans_handle *trans,
int pending_ret;
struct btrfs_root *extent_root = root->fs_info->extent_root;
struct btrfs_block_group_item *bi;
- struct btrfs_key ins;
- ret = find_free_extent(trans, extent_root, 0, 0, 0, (u64)-1, 0, &ins,
- 0, 0, 0);
- /* FIXME, set bit to recalc cache groups on next mount */
- if (ret)
- return ret;
ret = btrfs_search_slot(trans, extent_root, &cache->key, path, 0, 1);
if (ret < 0)
goto fail;
@@ -706,14 +685,6 @@ static int update_block_group(struct btrfs_trans_handle *trans,
return 0;
}
-static int try_remove_page(struct address_space *mapping, unsigned long index)
-{
- int ret;
- return 0;
- ret = invalidate_mapping_pages(mapping, index, index);
- return ret;
-}
-
int btrfs_copy_pinned(struct btrfs_root *root, struct radix_tree_root *copy)
{
unsigned long gang[8];
@@ -732,6 +703,9 @@ int btrfs_copy_pinned(struct btrfs_root *root, struct radix_tree_root *copy)
last = gang[i] + 1;
}
}
+ ret = find_first_radix_bit(&root->fs_info->extent_ins_radix, gang, 0,
+ ARRAY_SIZE(gang));
+ WARN_ON(ret);
return 0;
}
@@ -740,7 +714,6 @@ int btrfs_finish_extent_commit(struct btrfs_trans_handle *trans,
struct radix_tree_root *unpin_radix)
{
unsigned long gang[8];
- struct inode *btree_inode = root->fs_info->btree_inode;
struct btrfs_block_group_cache *block_group;
u64 first = 0;
int ret;
@@ -765,14 +738,9 @@ int btrfs_finish_extent_commit(struct btrfs_trans_handle *trans,
block_group->pinned--;
if (gang[i] < block_group->last_alloc)
block_group->last_alloc = gang[i];
- if (gang[i] < block_group->last_prealloc)
- block_group->last_prealloc = gang[i];
if (!block_group->data)
set_radix_bit(extent_radix, gang[i]);
}
- try_remove_page(btree_inode->i_mapping,
- gang[i] << (PAGE_CACHE_SHIFT -
- btree_inode->i_blkbits));
}
}
return 0;
@@ -785,7 +753,8 @@ static int finish_current_insert(struct btrfs_trans_handle *trans, struct
struct btrfs_extent_item extent_item;
int i;
int ret;
- u64 super_blocks_used;
+ int err;
+ unsigned long gang[8];
struct btrfs_fs_info *info = extent_root->fs_info;
btrfs_set_extent_refs(&extent_item, 1);
@@ -794,16 +763,21 @@ static int finish_current_insert(struct btrfs_trans_handle *trans, struct
btrfs_set_key_type(&ins, BTRFS_EXTENT_ITEM_KEY);
btrfs_set_extent_owner(&extent_item, extent_root->root_key.objectid);
- for (i = 0; i < extent_root->fs_info->extent_tree_insert_nr; i++) {
- ins.objectid = extent_root->fs_info->extent_tree_insert[i];
- super_blocks_used = btrfs_super_blocks_used(&info->super_copy);
- btrfs_set_super_blocks_used(&info->super_copy,
- super_blocks_used + 1);
- ret = btrfs_insert_item(trans, extent_root, &ins, &extent_item,
- sizeof(extent_item));
- BUG_ON(ret);
+ while(1) {
+ ret = find_first_radix_bit(&info->extent_ins_radix, gang, 0,
+ ARRAY_SIZE(gang));
+ if (!ret)
+ break;
+
+ for (i = 0; i < ret; i++) {
+ ins.objectid = gang[i];
+ err = btrfs_insert_item(trans, extent_root, &ins,
+ &extent_item,
+ sizeof(extent_item));
+ clear_radix_bit(&info->extent_ins_radix, gang[i]);
+ WARN_ON(err);
+ }
}
- extent_root->fs_info->extent_tree_insert_nr = 0;
return 0;
}
@@ -856,7 +830,6 @@ static int __free_extent(struct btrfs_trans_handle *trans, struct btrfs_root
struct btrfs_root *extent_root = info->extent_root;
int ret;
struct btrfs_extent_item *ei;
- struct btrfs_key ins;
u32 refs;
key.objectid = blocknr;
@@ -868,12 +841,6 @@ static int __free_extent(struct btrfs_trans_handle *trans, struct btrfs_root
if (!path)
return -ENOMEM;
- ret = find_free_extent(trans, root, 0, 0, 0, (u64)-1, 0, &ins, 0, 0, 0);
- if (ret) {
- btrfs_free_path(path);
- return ret;
- }
-
ret = btrfs_search_slot(trans, extent_root, &key, path, -1, 1);
if (ret < 0)
return ret;
@@ -1003,35 +970,17 @@ static int find_free_extent(struct btrfs_trans_handle *trans, struct btrfs_root
struct btrfs_root * root = orig_root->fs_info->extent_root;
struct btrfs_fs_info *info = root->fs_info;
int total_needed = num_blocks;
- int total_found = 0;
- int fill_prealloc = 0;
int level;
struct btrfs_block_group_cache *block_group;
int full_scan = 0;
int wrapped = 0;
u64 limit;
+ WARN_ON(num_blocks < 1);
ins->flags = 0;
btrfs_set_key_type(ins, BTRFS_EXTENT_ITEM_KEY);
level = btrfs_header_level(btrfs_buffer_header(root->node));
- if (num_blocks == 0) {
- fill_prealloc = 1;
- num_blocks = 1;
- total_needed = (min(level + 1, BTRFS_MAX_LEVEL)) * 6;
- }
- if (fill_prealloc) {
- u64 first;
- int nr = info->extent_tree_prealloc_nr;
- first = info->extent_tree_prealloc[nr - 1];
- if (info->extent_tree_prealloc_nr >= total_needed &&
- first >= search_start) {
- ins->objectid = info->extent_tree_prealloc[0];
- ins->offset = 1;
- return 0;
- }
- info->extent_tree_prealloc_nr = 0;
- }
if (search_end == (u64)-1)
search_end = btrfs_super_total_blocks(&info->super_copy);
if (hint_block) {
@@ -1091,10 +1040,6 @@ check_failed:
l = btrfs_buffer_leaf(path->nodes[0]);
slot = path->slots[0];
if (slot >= btrfs_header_nritems(&l->header)) {
- if (fill_prealloc) {
- info->extent_tree_prealloc_nr = 0;
- total_found = 0;
- }
if (start_found)
limit = last_block +
(block_group->key.offset >> 1);
@@ -1170,67 +1115,21 @@ check_pending:
}
for (test_block = ins->objectid;
test_block < ins->objectid + num_blocks; test_block++) {
- if (test_radix_bit(&info->pinned_radix, test_block)) {
+ if (test_radix_bit(&info->pinned_radix, test_block) ||
+ test_radix_bit(&info->extent_ins_radix, test_block)) {
search_start = test_block + 1;
goto new_group;
}
}
- if (!fill_prealloc && info->extent_tree_insert_nr) {
- u64 last =
- info->extent_tree_insert[info->extent_tree_insert_nr - 1];
- if (ins->objectid + num_blocks >
- info->extent_tree_insert[0] &&
- ins->objectid <= last) {
- search_start = last + 1;
- WARN_ON(!full_scan);
- goto new_group;
- }
- }
- if (!fill_prealloc && info->extent_tree_prealloc_nr) {
- u64 first =
- info->extent_tree_prealloc[info->extent_tree_prealloc_nr - 1];
- if (ins->objectid + num_blocks > first &&
- ins->objectid <= info->extent_tree_prealloc[0]) {
- search_start = info->extent_tree_prealloc[0] + 1;
- goto new_group;
- }
- }
if (exclude_nr > 0 && (ins->objectid + num_blocks > exclude_start &&
ins->objectid < exclude_start + exclude_nr)) {
search_start = exclude_start + exclude_nr;
goto new_group;
}
- if (fill_prealloc) {
- int nr;
- test_block = ins->objectid;
- if (test_block - info->extent_tree_prealloc[total_needed - 1] >=
- leaf_range(root)) {
- total_found = 0;
- info->extent_tree_prealloc_nr = total_found;
- }
- while(test_block < ins->objectid + ins->offset &&
- total_found < total_needed) {
- nr = total_needed - total_found - 1;
- BUG_ON(nr < 0);
- info->extent_tree_prealloc[nr] = test_block;
- total_found++;
- test_block++;
- }
- if (total_found < total_needed) {
- search_start = test_block;
- goto new_group;
- }
- info->extent_tree_prealloc_nr = total_found;
- }
if (!data) {
block_group = btrfs_lookup_block_group(info, ins->objectid);
- if (block_group) {
- if (fill_prealloc)
- block_group->last_prealloc =
- info->extent_tree_prealloc[total_needed-1];
- else
- trans->block_group = block_group;
- }
+ if (block_group)
+ trans->block_group = block_group;
}
ins->offset = num_blocks;
btrfs_free_path(path);
@@ -1278,85 +1177,41 @@ int btrfs_alloc_extent(struct btrfs_trans_handle *trans,
int pending_ret;
u64 super_blocks_used;
u64 search_start = 0;
- u64 exclude_start = 0;
- u64 exclude_nr = 0;
struct btrfs_fs_info *info = root->fs_info;
struct btrfs_root *extent_root = info->extent_root;
struct btrfs_extent_item extent_item;
- struct btrfs_key prealloc_key;
btrfs_set_extent_refs(&extent_item, 1);
btrfs_set_extent_owner(&extent_item, owner);
- if (root == extent_root) {
- int nr;
- BUG_ON(info->extent_tree_prealloc_nr == 0);
- BUG_ON(num_blocks != 1);
- ins->offset = 1;
- info->extent_tree_prealloc_nr--;
- nr = info->extent_tree_prealloc_nr;
- ins->objectid = info->extent_tree_prealloc[nr];
- info->extent_tree_insert[info->extent_tree_insert_nr++] =
- ins->objectid;
- ret = update_block_group(trans, root,
- ins->objectid, ins->offset, 1, 0, 0);
- WARN_ON(info->extent_tree_insert_nr >
- ARRAY_SIZE(info->extent_tree_insert));
- BUG_ON(ret);
- return 0;
- }
-
- /*
- * if we're doing a data allocation, preallocate room in the
- * extent tree first. This way the extent tree blocks end up
- * in the correct block group.
- */
- if (data) {
- ret = find_free_extent(trans, root, 0, 0, 0,
- search_end, 0, &prealloc_key, 0, 0, 0);
- BUG_ON(ret);
- if (ret)
- return ret;
- exclude_nr = info->extent_tree_prealloc_nr;
- exclude_start = info->extent_tree_prealloc[exclude_nr - 1];
- }
-
- /* do the real allocation */
+ WARN_ON(num_blocks < 1);
ret = find_free_extent(trans, root, num_blocks, empty_size,
search_start, search_end, hint_block, ins,
- exclude_start, exclude_nr, data);
+ trans->alloc_exclude_start,
+ trans->alloc_exclude_nr, data);
BUG_ON(ret);
if (ret)
return ret;
- /*
- * if we're doing a metadata allocation, preallocate space in the
- * extent tree second. This way, we don't create a tiny hole
- * in the allocation map between any unused preallocation blocks
- * and the metadata block we're actually allocating. On disk,
- * it'll go:
- * [block we've allocated], [used prealloc 1], [ unused prealloc ]
- * The unused prealloc will get reused the next time around.
- */
- if (!data) {
- exclude_start = ins->objectid;
- exclude_nr = ins->offset;
- hint_block = exclude_start + exclude_nr;
- ret = find_free_extent(trans, root, 0, 0, search_start,
- search_end, hint_block,
- &prealloc_key, exclude_start,
- exclude_nr, 0);
- BUG_ON(ret);
- if (ret)
- return ret;
- }
-
super_blocks_used = btrfs_super_blocks_used(&info->super_copy);
btrfs_set_super_blocks_used(&info->super_copy, super_blocks_used +
num_blocks);
+
+ if (root == extent_root) {
+ BUG_ON(num_blocks != 1);
+ set_radix_bit(&root->fs_info->extent_ins_radix, ins->objectid);
+ goto update_block;
+ }
+
+ WARN_ON(trans->alloc_exclude_nr);
+ trans->alloc_exclude_start = ins->objectid;
+ trans->alloc_exclude_nr = ins->offset;
ret = btrfs_insert_item(trans, extent_root, ins, &extent_item,
sizeof(extent_item));
+ trans->alloc_exclude_start = 0;
+ trans->alloc_exclude_nr = 0;
+
BUG_ON(ret);
finish_current_insert(trans, extent_root);
pending_ret = del_pending_extents(trans, extent_root);
@@ -1366,6 +1221,8 @@ int btrfs_alloc_extent(struct btrfs_trans_handle *trans,
if (pending_ret) {
return pending_ret;
}
+
+update_block:
ret = update_block_group(trans, root, ins->objectid, ins->offset, 1, 0,
data);
BUG_ON(ret);
@@ -1750,7 +1607,6 @@ int btrfs_read_block_groups(struct btrfs_root *root)
memcpy(&cache->key, &found_key, sizeof(found_key));
cache->last_alloc = cache->key.objectid;
cache->first_free = cache->key.objectid;
- cache->last_prealloc = cache->key.objectid;
cache->pinned = 0;
cache->cached = 0;
diff --git a/fs/btrfs/transaction.c b/fs/btrfs/transaction.c
index 88b0752550b..e64ecec3f52 100644
--- a/fs/btrfs/transaction.c
+++ b/fs/btrfs/transaction.c
@@ -109,6 +109,8 @@ struct btrfs_trans_handle *btrfs_start_transaction(struct btrfs_root *root,
h->blocks_reserved = num_blocks;
h->blocks_used = 0;
h->block_group = NULL;
+ h->alloc_exclude_nr = 0;
+ h->alloc_exclude_start = 0;
root->fs_info->running_transaction->use_count++;
mutex_unlock(&root->fs_info->trans_mutex);
return h;
diff --git a/fs/btrfs/transaction.h b/fs/btrfs/transaction.h
index 8b2714e6556..65a395eeca9 100644
--- a/fs/btrfs/transaction.h
+++ b/fs/btrfs/transaction.h
@@ -39,6 +39,8 @@ struct btrfs_trans_handle {
unsigned long blocks_used;
struct btrfs_transaction *transaction;
struct btrfs_block_group_cache *block_group;
+ u64 alloc_exclude_start;
+ u64 alloc_exclude_nr;
};
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-07 06:36:38 +0000