Commit dcf62b20 authored by Qu Wenruo's avatar Qu Wenruo Committed by David Sterba
Browse files

btrfs: scrub: use btrfs_path::reada for extent tree readahead 



For scrub, we trigger two readaheads for two trees, extent tree to get
where to scrub, and csum tree to get the data checksum.

For csum tree we already trigger readahead in
btrfs_lookup_csums_range(), by setting path->reada.
But for extent tree we don't have any path based readahead.

Add the readahead for extent tree as well, so we can later remove the
btrfs_reada_add() based readahead.

Signed-off-by: default avatarQu Wenruo <wqu@suse.com>
Reviewed-by: default avatarDavid Sterba <dsterba@suse.com>
Signed-off-by: default avatarDavid Sterba <dsterba@suse.com>
parent 2522dbe8

fs/btrfs/scrub.c

+1 −0
Original line number Diff line number Diff line
@@ -3240,6 +3240,7 @@ static noinline_for_stack int scrub_stripe(struct scrub_ctx *sctx, 
	 */

	path->search_commit_root = 1;

	path->skip_locking = 1;

	path->reada = READA_FORWARD;



	/*

	 * trigger the readahead for extent tree csum tree and wait for