Commit dec8ef90 authored Mar 01, 2014 by Filipe Manana Committed by Josef Bacik Mar 10, 2014

Btrfs: correctly flush data on defrag when compression is enabled



When the defrag flag BTRFS_DEFRAG_RANGE_START_IO is set and compression
enabled, we weren't flushing completely, as writing compressed extents
is a 2 steps process, one to compress the data and another one to write
the compressed data to disk.

Signed-off-by: Filipe David Borba Manana <fdmanana@gmail.com>
Signed-off-by: Josef Bacik <jbacik@fb.com>

parent d458b054

fs/btrfs/ioctl.c

+5 −1

Original line number	Diff line number	Diff line
		@@ -1382,8 +1382,12 @@ int btrfs_defrag_file(struct inode inode, struct file file,
		}
		}

		if ((range->flags & BTRFS_DEFRAG_RANGE_START_IO))
		if ((range->flags & BTRFS_DEFRAG_RANGE_START_IO)) {
		filemap_flush(inode->i_mapping);
		if (test_bit(BTRFS_INODE_HAS_ASYNC_EXTENT,
		&BTRFS_I(inode)->runtime_flags))
		filemap_flush(inode->i_mapping);
		}

		if ((range->flags & BTRFS_DEFRAG_RANGE_COMPRESS)) {
		/* the filemap_flush will queue IO into the worker threads, but