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Btrfs: Stop using radix trees for the block group cache

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Signed-off-by: Chris Mason <chris.mason@oracle.com>
This commit is contained in:
Chris Mason
2007-10-15 16:15:19 -04:00
parent f510cfecfc
commit 96b5179d0d
5 changed files with 172 additions and 224 deletions
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fs/btrfs/ctree.h
+1 -5
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@@ -271,8 +271,6 @@ struct btrfs_csum_item {
} __attribute__ ((__packed__));
/* tag for the radix tree of block groups in ram */
#define BTRFS_BLOCK_GROUP_DIRTY 0
#define BTRFS_BLOCK_GROUP_AVAIL 1
#define BTRFS_BLOCK_GROUP_SIZE (256 * 1024 * 1024)
@@ -285,7 +283,6 @@ struct btrfs_block_group_item {
struct btrfs_block_group_cache {
struct btrfs_key key;
struct btrfs_block_group_item item;
struct radix_tree_root *radix;
u64 first_free;
u64 last_alloc;
u64 pinned;
@@ -301,10 +298,9 @@ struct btrfs_fs_info {
struct radix_tree_root fs_roots_radix;
struct radix_tree_root pending_del_radix;
struct radix_tree_root pinned_radix;
struct radix_tree_root block_group_radix;
struct radix_tree_root block_group_data_radix;
struct radix_tree_root extent_ins_radix;
struct extent_map_tree free_space_cache;
struct extent_map_tree block_group_cache;
u64 generation;
u64 last_trans_committed;
struct btrfs_transaction *running_transaction;
fs/btrfs/disk-io.c
+2 -2
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@@ -436,8 +436,6 @@ struct btrfs_root *open_ctree(struct super_block *sb)
init_bit_radix(&fs_info->pending_del_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);
INIT_LIST_HEAD(&fs_info->trans_list);
INIT_LIST_HEAD(&fs_info->dead_roots);
memset(&fs_info->super_kobj, 0, sizeof(fs_info->super_kobj));
@@ -458,6 +456,8 @@ struct btrfs_root *open_ctree(struct super_block *sb)
GFP_NOFS);
extent_map_tree_init(&fs_info->free_space_cache,
fs_info->btree_inode->i_mapping, GFP_NOFS);
extent_map_tree_init(&fs_info->block_group_cache,
fs_info->btree_inode->i_mapping, GFP_NOFS);
fs_info->do_barriers = 1;
fs_info->closing = 0;
fs/btrfs/extent-tree.c
+149 -215
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File diff suppressed because it is too large Load Diff
fs/btrfs/extent_map.c
+16 -2
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@@ -574,7 +574,7 @@ out:
return set;
search_again:
if (start >= end)
if (start > end)
goto out;
write_unlock_irqrestore(&tree->lock, flags);
if (mask & __GFP_WAIT)
@@ -819,6 +819,21 @@ int set_extent_dirty(struct extent_map_tree *tree, u64 start, u64 end,
}
EXPORT_SYMBOL(set_extent_dirty);
int set_extent_bits(struct extent_map_tree *tree, u64 start, u64 end,
int bits, gfp_t mask)
{
return set_extent_bit(tree, start, end, bits, 0, NULL,
mask);
}
EXPORT_SYMBOL(set_extent_bits);
int clear_extent_bits(struct extent_map_tree *tree, u64 start, u64 end,
int bits, gfp_t mask)
{
return clear_extent_bit(tree, start, end, bits, 0, 0, mask);
}
EXPORT_SYMBOL(clear_extent_bits);
int set_extent_delalloc(struct extent_map_tree *tree, u64 start, u64 end,
gfp_t mask)
{
@@ -1138,7 +1153,6 @@ int set_state_private(struct extent_map_tree *tree, u64 start, u64 private)
out:
write_unlock_irq(&tree->lock);
return ret;
}
int get_state_private(struct extent_map_tree *tree, u64 start, u64 *private)
fs/btrfs/extent_map.h
+4
View File
@@ -96,6 +96,10 @@ int extent_read_full_page(struct extent_map_tree *tree, struct page *page,
void __init extent_map_init(void);
void __exit extent_map_exit(void);
int extent_clean_all_trees(struct extent_map_tree *tree);
int clear_extent_bits(struct extent_map_tree *tree, u64 start, u64 end,
int bits, gfp_t mask);
int set_extent_bits(struct extent_map_tree *tree, u64 start, u64 end,
int bits, gfp_t mask);
int set_extent_uptodate(struct extent_map_tree *tree, u64 start, u64 end,
gfp_t mask);
int set_extent_new(struct extent_map_tree *tree, u64 start, u64 end,