From: Jeff Layton <jlayton@kernel.org>
Date: Thu, 19 Mar 2020 15:34:13 -0400
Subject: ceph: document what protects i_dirty_item and i_flushing_item
Git-commit: 4fb5dda39c26fa5b64059dac0a2c3340a4f6f11b
Patch-mainline: v5.8-rc1
References: bsc#1172940
Signed-off-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Acked-by: Luis Henriques <lhenriques@suse.com>
---
fs/ceph/super.h | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/fs/ceph/super.h b/fs/ceph/super.h
index 47cfd8935b9c..bb372859c0ad 100644
--- a/fs/ceph/super.h
+++ b/fs/ceph/super.h
@@ -351,7 +351,9 @@ struct ceph_inode_info {
struct rb_root i_caps; /* cap list */
struct ceph_cap *i_auth_cap; /* authoritative cap, if any */
unsigned i_dirty_caps, i_flushing_caps; /* mask of dirtied fields */
- struct list_head i_dirty_item, i_flushing_item;
+ struct list_head i_dirty_item, i_flushing_item; /* protected by
+ * mdsc->cap_dirty_lock
+ */
/* we need to track cap writeback on a per-cap-bit basis, to allow
* overlapping, pipelined cap flushes to the mds. we can probably
* reduce the tid to 8 bits if we're concerned about inode size. */