This is a note to let you know that I've just added the patch titled
ceph: remove the incorrect Fw reference check when dirtying pages
to the 6.11-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
ceph-remove-the-incorrect-fw-reference-check-when-di.patch
and it can be found in the queue-6.11 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 561d4aa3cc9157c5e615bd2b5d90faba5b37012e
Author: Xiubo Li <xiubli@xxxxxxxxxx>
Date: Thu Sep 5 06:22:18 2024 +0800
ceph: remove the incorrect Fw reference check when dirtying pages
[ 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>
diff --git a/fs/ceph/addr.c b/fs/ceph/addr.c
index c4744a02db753..0df4623785ddb 100644
--- 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,
