From 699122f55904bec252ea4f8a64228ce98e3d9fda Mon Sep 17 00:00:00 2001 From: Chris Mason Date: Wed, 16 Apr 2008 12:59:22 -0400 Subject: [PATCH] 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 --- fs/btrfs/ctree.c | 5 ----- fs/btrfs/extent-tree.c | 1 - fs/btrfs/inode.c | 2 ++ 3 files changed, 2 insertions(+), 6 deletions(-) diff --git a/fs/btrfs/ctree.c b/fs/btrfs/ctree.c index 618e526c9046..1c3d9d6fbdad 100644 --- a/fs/btrfs/ctree.c +++ b/fs/btrfs/ctree.c @@ -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) diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c index 4e5bd62e6e1a..76fd5d7146e1 100644 --- a/fs/btrfs/extent-tree.c +++ b/fs/btrfs/extent-tree.c @@ -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)) { diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c index 3e1f21c632c1..5632ea760077 100644 --- a/fs/btrfs/inode.c +++ b/fs/btrfs/inode.c @@ -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); -- 2.34.1