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Commit 580afd76 authored Dec 08, 2008 by Chris Mason

Btrfs: Fix compressed checksum fsync log copies



The fsync logging code makes sure to onl copy the relevant checksum for each
extent based on the file extent pointers it finds.

But for compressed extents, it needs to copy the checksum for the
entire extent.

Signed-off-by: Chris Mason <chris.mason@oracle.com>

parent c3027eb5

fs/btrfs/file.c

+2 −1

Original line number	Diff line number	Diff line
		@@ -1228,7 +1228,8 @@ int btrfs_sync_file(struct file file, struct dentry dentry, int datasync)
		mutex_unlock(&root->fs_info->trans_mutex);

		root->fs_info->tree_log_batch++;
		filemap_fdatawait(inode->i_mapping);
		filemap_fdatawrite(inode->i_mapping);
		btrfs_wait_ordered_range(inode, 0, (u64)-1);
		root->fs_info->tree_log_batch++;

		/*

fs/btrfs/tree-log.c

+5 −0

Original line number	Diff line number	Diff line
		@@ -2610,6 +2610,11 @@ static noinline int copy_items(struct btrfs_trans_handle *trans,
		u64 cs = btrfs_file_extent_offset(src, extent);
		u64 cl = btrfs_file_extent_num_bytes(src,
		extent);;
		if (btrfs_file_extent_compression(src,
		extent)) {
		cs = 0;
		cl = dl;
		}
		/* ds == 0 is a hole */
		if (ds != 0) {
		ret = btrfs_inc_extent_ref(trans, log,