From: Kent Overstreet <kent.overstreet@gmail.com>
Date: Thu, 16 Dec 2021 01:35:45 +0000 (-0500)
Subject: bcachefs: Fix an assertion in bch2_truncate()
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=51c4e406aa5706cdb224ff16eef1d560c504c3ac;p=users%2Fjedix%2Flinux-maple.git

bcachefs: Fix an assertion in bch2_truncate()

We recently added an assertion that when we truncate a file to 0,
i_blocks should also go to 0 - but that's not necessarily true if we're
doing an emergency shutdown, lots of invariants no longer hold true in
that case.

Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>
---

diff --git a/fs/bcachefs/fs-io.c b/fs/bcachefs/fs-io.c
index 2f144fa3298de..28bbbac5cd670 100644
--- a/fs/bcachefs/fs-io.c
+++ b/fs/bcachefs/fs-io.c
@@ -2699,7 +2699,8 @@ int bch2_truncate(struct mnt_idmap *idmap,
 			U64_MAX, &i_sectors_delta);
 	i_sectors_acct(c, inode, NULL, i_sectors_delta);
 
-	BUG_ON(!inode->v.i_size && inode->v.i_blocks);
+	WARN_ON(!inode->v.i_size && inode->v.i_blocks &&
+		!bch2_journal_error(&c->journal));
 
 	if (unlikely(ret))
 		goto err;