NFS: Add functionality to allow waiting on all outstanding reads to complete
This will later allow NFS locking code to wait for readahead to complete
before releasing byte range locks.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
diff --git a/include/linux/nfs_fs.h b/include/linux/nfs_fs.h
index f6b1956..fc01d5c 100644
--- a/include/linux/nfs_fs.h
+++ b/include/linux/nfs_fs.h
@@ -59,11 +59,18 @@
pid_t l_pid;
};
+#define NFS_IO_INPROGRESS 0
+struct nfs_io_counter {
+ unsigned long flags;
+ atomic_t io_count;
+};
+
struct nfs_lock_context {
atomic_t count;
struct list_head list;
struct nfs_open_context *open_context;
struct nfs_lockowner lockowner;
+ struct nfs_io_counter io_count;
};
struct nfs4_state;