From 3eaa2885276fd6dac7b076a793932428b7168e74 Mon Sep 17 00:00:00 2001 From: Chris Mason Date: Thu, 24 Jul 2008 11:57:52 -0400 Subject: Btrfs: Fix the defragmention code and the block relocation code for data=ordered Before setting an extent to delalloc, the code needs to wait for pending ordered extents. Also, the relocation code needs to wait for ordered IO before scanning the block group again. This is because the extents are not removed until the IO for the new extents is finished Signed-off-by: Chris Mason --- fs/btrfs/ioctl.c | 21 ++++++++++++++------- 1 file changed, 14 insertions(+), 7 deletions(-) (limited to 'fs/btrfs/ioctl.c') diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c index 83f17a5..a61f2e7 100644 --- a/fs/btrfs/ioctl.c +++ b/fs/btrfs/ioctl.c @@ -213,6 +213,7 @@ int btrfs_defrag_file(struct file *file) struct inode *inode = fdentry(file)->d_inode; struct btrfs_root *root = BTRFS_I(inode)->root; struct extent_io_tree *io_tree = &BTRFS_I(inode)->io_tree; + struct btrfs_ordered_extent *ordered; struct page *page; unsigned long last_index; unsigned long ra_pages = root->fs_info->bdi.ra_pages; @@ -234,6 +235,7 @@ int btrfs_defrag_file(struct file *file) min(last_index, i + ra_pages - 1)); } total_read++; +again: page = grab_cache_page(inode->i_mapping, i); if (!page) goto out_unlock; @@ -247,18 +249,23 @@ int btrfs_defrag_file(struct file *file) } } -#if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,18) - ClearPageDirty(page); -#else - cancel_dirty_page(page, PAGE_CACHE_SIZE); -#endif wait_on_page_writeback(page); - set_page_extent_mapped(page); page_start = (u64)page->index << PAGE_CACHE_SHIFT; page_end = page_start + PAGE_CACHE_SIZE - 1; - lock_extent(io_tree, page_start, page_end, GFP_NOFS); + + ordered = btrfs_lookup_ordered_extent(inode, page_start); + if (ordered) { + unlock_extent(io_tree, page_start, page_end, GFP_NOFS); + unlock_page(page); + page_cache_release(page); + btrfs_start_ordered_extent(inode, ordered, 1); + btrfs_put_ordered_extent(ordered); + goto again; + } + set_page_extent_mapped(page); + set_extent_delalloc(io_tree, page_start, page_end, GFP_NOFS); -- cgit v1.1