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Btrfs: Don't wait on tree block writeback before freeing them anymore 

This isn't required anymore because we don't reallocate blocks that
have already been written in this transaction.

Signed-off-by: Chris Mason <chris.mason@oracle.com>
This commit is contained in:
Chris Mason 2008-04-16 12:59:22 -04:00
parent e015640f9c
commit 699122f559
3 changed files with 2 additions and 6 deletions
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5
fs/btrfs/ctree.c
View File

@ -751,7 +751,6 @@ static int balance_level(struct btrfs_trans_handle *trans,
add_root_to_dirty_list(root);
path->nodes[level] = NULL;
clean_tree_block(trans, root, mid);
wait_on_tree_block_writeback(root, mid);
/* once for the path */
free_extent_buffer(mid);
ret = btrfs_free_extent(trans, root, mid->start, mid->len,
@ -810,7 +809,6 @@ static int balance_level(struct btrfs_trans_handle *trans,
u32 blocksize = right->len;
clean_tree_block(trans, root, right);
wait_on_tree_block_writeback(root, right);
free_extent_buffer(right);
right = NULL;
wret = del_ptr(trans, root, path, level + 1, pslot +
@ -854,7 +852,6 @@ static int balance_level(struct btrfs_trans_handle *trans,
u64 bytenr = mid->start;
u32 blocksize = mid->len;
clean_tree_block(trans, root, mid);
wait_on_tree_block_writeback(root, mid);
free_extent_buffer(mid);
mid = NULL;
wret = del_ptr(trans, root, path, level + 1, pslot);
@ -2638,7 +2635,6 @@ int btrfs_del_items(struct btrfs_trans_handle *trans, struct btrfs_root *root,
} else {
u64 root_gen = btrfs_header_generation(path->nodes[1]);
clean_tree_block(trans, root, leaf);
wait_on_tree_block_writeback(root, leaf);
wret = del_ptr(trans, root, path, 1, path->slots[1]);
if (wret)
ret = wret;
@ -2690,7 +2686,6 @@ int btrfs_del_items(struct btrfs_trans_handle *trans, struct btrfs_root *root,
path->nodes[1]);
clean_tree_block(trans, root, leaf);
wait_on_tree_block_writeback(root, leaf);
wret = del_ptr(trans, root, path, 1, slot);
if (wret)

1
fs/btrfs/extent-tree.c
View File

@ -1887,7 +1887,6 @@ struct extent_buffer *__btrfs_alloc_free_block(struct btrfs_trans_handle *trans,
}
btrfs_set_header_generation(buf, trans->transid);
clean_tree_block(trans, root, buf);
wait_on_tree_block_writeback(root, buf);
btrfs_set_buffer_uptodate(buf);
if (PageDirty(buf->first_page)) {

2
fs/btrfs/inode.c
View File

@ -383,9 +383,11 @@ int btrfs_readpage_io_hook(struct page *page, u64 start, u64 end)
struct btrfs_csum_item *item;
struct btrfs_path *path = NULL;
u32 csum;
if (btrfs_test_opt(root, NODATASUM) ||
btrfs_test_flag(inode, NODATASUM))
return 0;
mutex_lock(&root->fs_info->fs_mutex);
path = btrfs_alloc_path();
item = btrfs_lookup_csum(NULL, root, path, inode->i_ino, start, 0);