From: Zygo Blaxell <ce3g8jdj@umail.furryterror.org>
Date: Mon, 4 Mar 2024 07:51:00 +0000 (-0500)
Subject: zygo: btrfs: prefer aligned dev_extent holes when allocating chunks (v3, handle last... 
X-Git-Url: http://git.hungrycats.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=825cb15cd8a02a083042cc6fa12767ec1805f92d;p=linux

zygo: btrfs: prefer aligned dev_extent holes when allocating chunks (v3, handle last hole correctly)
---

diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index 1de26a61ca13..4985407db76c 100644
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -1737,7 +1737,11 @@ next:
 			goto again;
 		}
 
-		if (hole_size > max_hole_size) {
+		/*
+		 * If this is a larger hole it might not be aligned.
+		 * Keep the hole we found above if it was large enough.
+		 */
+		if (hole_size > max_hole_size && max_hole_size < num_bytes) {
 			max_hole_start = search_start;
 			max_hole_size = hole_size;
 		}