ceph: track pending caps flushing globally
So we know TID of the oldest pending caps flushing. Later patch will
send this information to MDS, so that MDS can trim its completed caps
flush list.
Tracking pending caps flushing globally also simplifies syncfs code.
Signed-off-by: Yan, Zheng <[email protected]>
diff --git a/fs/ceph/mds_client.h b/fs/ceph/mds_client.h
index 19f6084..470be4e 100644
--- a/fs/ceph/mds_client.h
+++ b/fs/ceph/mds_client.h
@@ -306,8 +306,8 @@
struct list_head snap_flush_list; /* cap_snaps ready to flush */
spinlock_t snap_flush_lock;
- u64 cap_flush_seq;
u64 last_cap_flush_tid;
+ struct rb_root cap_flush_tree;
struct list_head cap_dirty; /* inodes with dirty caps */
struct list_head cap_dirty_migrating; /* ...that are migration... */
int num_cap_flushing; /* # caps we are flushing */
