pNFS/flexfiles: Only send layoutstats updates for mirrors that were updated
If there have been no reads or writes to a given mirror since the last
layoutstats update, then don't resend the same data.
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
diff --git a/fs/nfs/flexfilelayout/flexfilelayout.h b/fs/nfs/flexfilelayout/flexfilelayout.h
index 3ee0c9f..09f292e 100644
--- a/fs/nfs/flexfilelayout/flexfilelayout.h
+++ b/fs/nfs/flexfilelayout/flexfilelayout.h
@@ -81,12 +81,15 @@ struct nfs4_ff_layout_mirror {
struct rpc_cred __rcu *rw_cred;
atomic_t ref;
spinlock_t lock;
+ unsigned long flags;
struct nfs4_ff_layoutstat read_stat;
struct nfs4_ff_layoutstat write_stat;
ktime_t start_time;
u32 report_interval;
};
+#define NFS4_FF_MIRROR_STAT_AVAIL (0)
+
struct nfs4_ff_layout_segment {
struct pnfs_layout_segment generic_hdr;
u64 stripe_unit;