jbd2: remove wrong sb->s_sequence check

commit e6eff39dd0fe4190c6146069cc16d160e71d1148 upstream.

Journal emptiness is not determined by sb->s_sequence == 0 but rather by
sb->s_start == 0 (which is set a few lines above). Furthermore 0 is a
valid transaction ID so the check can spuriously trigger. Remove the
invalid WARN_ON.

CC: stable@vger.kernel.org
Signed-off-by: Jan Kara <jack@suse.cz>
Reviewed-by: Zhang Yi <yi.zhang@huawei.com>
Link: https://patch.msgid.link/20250206094657.20865-3-jack@suse.cz
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/fs/jbd2/journal.c b/fs/jbd2/journal.c
index 7e49d912b091728ae0e90fb820ee20c755eb465e..354c9f691df3dfdedee9586c935fd3d4515d40bc 100644 (file)
--- a/fs/jbd2/journal.c
+++ b/fs/jbd2/journal.c
@@ -1879,7 +1879,6 @@ int jbd2_journal_update_sb_log_tail(journal_t *journal, tid_t tail_tid,
 
        /* Log is no longer empty */
        write_lock(&journal->j_state_lock);
-       WARN_ON(!sb->s_sequence);
        journal->j_flags &= ~JBD2_FLUSHED;
        write_unlock(&journal->j_state_lock);