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Btrfs: Add an extent buffer LRU to reduce radix tree hits

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Signed-off-by: Chris Mason <chris.mason@oracle.com>
This commit is contained in:
Chris Mason 2007-10-15 16:18:14 -04:00
parent e19caa5f0e
commit 4dc119046d
6 changed files with 134 additions and 111 deletions
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25
fs/btrfs/disk-io.c
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@ -50,8 +50,6 @@ struct extent_buffer *btrfs_find_tree_block(struct btrfs_root *root,
struct extent_buffer *eb;
eb = find_extent_buffer(&BTRFS_I(btree_inode)->extent_tree,
bytenr, blocksize, GFP_NOFS);
if (eb)
eb->alloc_addr = (unsigned long)__builtin_return_address(0);
return eb;
}
@ -63,7 +61,6 @@ struct extent_buffer *btrfs_find_create_tree_block(struct btrfs_root *root,
eb = alloc_extent_buffer(&BTRFS_I(btree_inode)->extent_tree,
bytenr, blocksize, GFP_NOFS);
eb->alloc_addr = (unsigned long)__builtin_return_address(0);
return eb;
}
@ -234,7 +231,6 @@ struct extent_buffer *read_tree_block(struct btrfs_root *root, u64 bytenr,
return NULL;
read_extent_buffer_pages(&BTRFS_I(btree_inode)->extent_tree,
buf, 1);
buf->alloc_addr = (unsigned long)__builtin_return_address(0);
return buf;
}
@ -638,6 +634,7 @@ int close_ctree(struct btrfs_root *root)
btrfs_free_block_groups(root->fs_info);
del_fs_roots(fs_info);
extent_map_tree_cleanup(&BTRFS_I(fs_info->btree_inode)->extent_tree);
truncate_inode_pages(fs_info->btree_inode->i_mapping, 0);
iput(fs_info->btree_inode);
kfree(fs_info->extent_root);
@ -647,20 +644,20 @@ int close_ctree(struct btrfs_root *root)
int btrfs_buffer_uptodate(struct extent_buffer *buf)
{
struct inode *btree_inode = buf->pages[0]->mapping->host;
struct inode *btree_inode = buf->last_page->mapping->host;
return extent_buffer_uptodate(&BTRFS_I(btree_inode)->extent_tree, buf);
}
int btrfs_set_buffer_uptodate(struct extent_buffer *buf)
{
struct inode *btree_inode = buf->pages[0]->mapping->host;
struct inode *btree_inode = buf->last_page->mapping->host;
return set_extent_buffer_uptodate(&BTRFS_I(btree_inode)->extent_tree,
buf);
}
void btrfs_mark_buffer_dirty(struct extent_buffer *buf)
{
struct btrfs_root *root = BTRFS_I(buf->pages[0]->mapping->host)->root;
struct btrfs_root *root = BTRFS_I(buf->last_page->mapping->host)->root;
u64 transid = btrfs_header_generation(buf);
struct inode *btree_inode = root->fs_info->btree_inode;
@ -681,7 +678,7 @@ void btrfs_btree_balance_dirty(struct btrfs_root *root, unsigned long nr)
void btrfs_set_buffer_defrag(struct extent_buffer *buf)
{
struct btrfs_root *root = BTRFS_I(buf->pages[0]->mapping->host)->root;
struct btrfs_root *root = BTRFS_I(buf->last_page->mapping->host)->root;
struct inode *btree_inode = root->fs_info->btree_inode;
set_extent_bits(&BTRFS_I(btree_inode)->extent_tree, buf->start,
buf->start + buf->len - 1, EXTENT_DEFRAG, GFP_NOFS);
@ -689,7 +686,7 @@ void btrfs_set_buffer_defrag(struct extent_buffer *buf)
void btrfs_set_buffer_defrag_done(struct extent_buffer *buf)
{
struct btrfs_root *root = BTRFS_I(buf->pages[0]->mapping->host)->root;
struct btrfs_root *root = BTRFS_I(buf->last_page->mapping->host)->root;
struct inode *btree_inode = root->fs_info->btree_inode;
set_extent_bits(&BTRFS_I(btree_inode)->extent_tree, buf->start,
buf->start + buf->len - 1, EXTENT_DEFRAG_DONE,
@ -698,7 +695,7 @@ void btrfs_set_buffer_defrag_done(struct extent_buffer *buf)
int btrfs_buffer_defrag(struct extent_buffer *buf)
{
struct btrfs_root *root = BTRFS_I(buf->pages[0]->mapping->host)->root;
struct btrfs_root *root = BTRFS_I(buf->last_page->mapping->host)->root;
struct inode *btree_inode = root->fs_info->btree_inode;
return test_range_bit(&BTRFS_I(btree_inode)->extent_tree,
buf->start, buf->start + buf->len - 1, EXTENT_DEFRAG, 0);
@ -706,7 +703,7 @@ int btrfs_buffer_defrag(struct extent_buffer *buf)
int btrfs_buffer_defrag_done(struct extent_buffer *buf)
{
struct btrfs_root *root = BTRFS_I(buf->pages[0]->mapping->host)->root;
struct btrfs_root *root = BTRFS_I(buf->last_page->mapping->host)->root;
struct inode *btree_inode = root->fs_info->btree_inode;
return test_range_bit(&BTRFS_I(btree_inode)->extent_tree,
buf->start, buf->start + buf->len - 1,
@ -715,7 +712,7 @@ int btrfs_buffer_defrag_done(struct extent_buffer *buf)
int btrfs_clear_buffer_defrag_done(struct extent_buffer *buf)
{
struct btrfs_root *root = BTRFS_I(buf->pages[0]->mapping->host)->root;
struct btrfs_root *root = BTRFS_I(buf->last_page->mapping->host)->root;
struct inode *btree_inode = root->fs_info->btree_inode;
return clear_extent_bits(&BTRFS_I(btree_inode)->extent_tree,
buf->start, buf->start + buf->len - 1,
@ -724,7 +721,7 @@ int btrfs_clear_buffer_defrag_done(struct extent_buffer *buf)
int btrfs_clear_buffer_defrag(struct extent_buffer *buf)
{
struct btrfs_root *root = BTRFS_I(buf->pages[0]->mapping->host)->root;
struct btrfs_root *root = BTRFS_I(buf->last_page->mapping->host)->root;
struct inode *btree_inode = root->fs_info->btree_inode;
return clear_extent_bits(&BTRFS_I(btree_inode)->extent_tree,
buf->start, buf->start + buf->len - 1,
@ -733,7 +730,7 @@ int btrfs_clear_buffer_defrag(struct extent_buffer *buf)
int btrfs_read_buffer(struct extent_buffer *buf)
{
struct btrfs_root *root = BTRFS_I(buf->pages[0]->mapping->host)->root;
struct btrfs_root *root = BTRFS_I(buf->last_page->mapping->host)->root;
struct inode *btree_inode = root->fs_info->btree_inode;
return read_extent_buffer_pages(&BTRFS_I(btree_inode)->extent_tree,
buf, 1);