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 2f144fa3298dee58ec511232d7cb8693dbbb9b46..28bbbac5cd6706f61c005cce17d1312b2558db88 100644 (file)
--- 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;