From: Kent Overstreet <kent.overstreet@linux.dev>
Date: Fri, 27 Oct 2023 17:53:07 +0000 (-0400)
Subject: bcachefs: Fix deleted inodes btree in snapshot deletion
X-Git-Tag: v6.7-rc1~50^2~34
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=2e7acdfbcad8b60eeef29d3beb3eb9a7085e3768;p=thirdparty%2Flinux.git

bcachefs: Fix deleted inodes btree in snapshot deletion

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
---

diff --git a/fs/bcachefs/snapshot.c b/fs/bcachefs/snapshot.c
index a3fecc7850019..e9af77b384c76 100644
--- a/fs/bcachefs/snapshot.c
+++ b/fs/bcachefs/snapshot.c
@@ -1437,6 +1437,15 @@ int bch2_delete_dead_snapshots(struct bch_fs *c)
 		if (!btree_type_has_snapshots(id))
 			continue;
 
+		/*
+		 * deleted inodes btree is maintained by a trigger on the inodes
+		 * btree - no work for us to do here, and it's not safe to scan
+		 * it because we'll see out of date keys due to the btree write
+		 * buffer:
+		 */
+		if (id == BTREE_ID_deleted_inodes)
+			continue;
+
 		ret = for_each_btree_key_commit(trans, iter,
 				id, POS_MIN,
 				BTREE_ITER_PREFETCH|BTREE_ITER_ALL_SNAPSHOTS, k,