4.19-stable review patch. If anyone has any objections, please let me know.
------------------
From: Xiubo Li <xiubli@xxxxxxxxxx>
[ Upstream commit c08dfb1b49492c09cf13838c71897493ea3b424e ]
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@xxxxxxxxxx>
Reviewed-by: Patrick Donnelly <pdonnell@xxxxxxxxxx>
Signed-off-by: Ilya Dryomov <idryomov@xxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
fs/ceph/addr.c | 1 -
1 file changed, 1 deletion(-)
diff --git a/fs/ceph/addr.c b/fs/ceph/addr.c
index de10899da837c..98b17992524b0 100644
--- a/fs/ceph/addr.c
+++ b/fs/ceph/addr.c
@@ -88,7 +88,6 @@ static int ceph_set_page_dirty(struct page *page)
/* 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,
--
2.43.0
