ceph: remove the incorrect Fw reference check when dirtying pages

When doing the direct-io reads it will also try to mark pages dirty,
but for the read path it won't hold the Fw caps and there is case
will it get the Fw reference.

Fixes: 5dda377cf0a6 ("ceph: set i_head_snapc when getting CEPH_CAP_FILE_WR reference")
Signed-off-by: Xiubo Li <xiubli@redhat.com>
Reviewed-by: Patrick Donnelly <pdonnell@redhat.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>

diff --git a/fs/ceph/addr.c b/fs/ceph/addr.c
index c4744a0..0df4623 100644 (file)
--- a/fs/ceph/addr.c
+++ b/fs/ceph/addr.c
@@ -95,7 +95,6 @@ static bool ceph_dirty_folio(struct address_space *mapping, struct folio *folio)
 
        /* dirty the head */
        spin_lock(&ci->i_ceph_lock);
-       BUG_ON(ci->i_wr_ref == 0); // caller should hold Fw reference
        if (__ceph_have_pending_cap_snap(ci)) {
                struct ceph_cap_snap *capsnap =
                                list_last_entry(&ci->i_cap_snaps,