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ceph: document what protects i_dirty_item and i_flushing_item 

Signed-off-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
This commit is contained in:
Jeff Layton 2020-03-19 15:34:13 -04:00 committed by Ilya Dryomov
parent 7833323363
commit 4fb5dda39c
1 changed files with 3 additions and 1 deletions
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4
fs/ceph/super.h
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@ -351,7 +351,9 @@ struct ceph_inode_info {
struct rb_root i_caps; /* cap list */ struct rb_root i_caps; /* cap list */
struct ceph_cap *i_auth_cap; /* authoritative cap, if any */ struct ceph_cap *i_auth_cap; /* authoritative cap, if any */
unsigned i_dirty_caps, i_flushing_caps; /* mask of dirtied fields */ 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 /* we need to track cap writeback on a per-cap-bit basis, to allow
* overlapping, pipelined cap flushes to the mds. we can probably * overlapping, pipelined cap flushes to the mds. we can probably
* reduce the tid to 8 bits if we're concerned about inode size. */ * reduce the tid to 8 bits if we're concerned about inode size. */