From: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Date: Mon, 12 Dec 2022 20:01:43 +0000 (+0100)
Subject: btrfs: fix an error handling path in btrfs_defrag_leaves()
X-Git-Tag: v6.6.7~3585^2~33
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=db0a4a7b8e95f9312a59a67cbd5bc589f090e13d;p=platform%2Fkernel%2Flinux-starfive.git

btrfs: fix an error handling path in btrfs_defrag_leaves()

All error handling paths end to 'out', except this memory allocation
failure.

This is spurious. So branch to the error handling path also in this case.
It will add a call to:

	memset(&root->defrag_progress, 0,
	       sizeof(root->defrag_progress));

Fixes: 6702ed490ca0 ("Btrfs: Add run time btree defrag, and an ioctl to force btree defrag")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
---

diff --git a/fs/btrfs/defrag.c b/fs/btrfs/defrag.c
index 0a3c261..d81b764 100644
--- a/fs/btrfs/defrag.c
+++ b/fs/btrfs/defrag.c
@@ -358,8 +358,10 @@ int btrfs_defrag_leaves(struct btrfs_trans_handle *trans,
 		goto out;
 
 	path = btrfs_alloc_path();
-	if (!path)
-		return -ENOMEM;
+	if (!path) {
+		ret = -ENOMEM;
+		goto out;
+	}
 
 	level = btrfs_header_level(root->node);