6.1-stable review patch. If anyone has any objections, please let me know.
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From: Xiubo Li xiubli@redhat.com
[ 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@redhat.com Reviewed-by: Patrick Donnelly pdonnell@redhat.com Signed-off-by: Ilya Dryomov idryomov@gmail.com Signed-off-by: Sasha Levin sashal@kernel.org --- fs/ceph/addr.c | 1 - 1 file changed, 1 deletion(-)
diff --git a/fs/ceph/addr.c b/fs/ceph/addr.c index dd2ce7fabbaee..6c325efa1c4e5 100644 --- a/fs/ceph/addr.c +++ b/fs/ceph/addr.c @@ -94,7 +94,6 @@ 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,