NFS41: send real write size in layoutget
For buffer write, block layout client scan inode mapping to find
next hole and use offset-to-hole as layoutget length. Object
layout client uses offset-to-isize as layoutget length.
For direct write, both block layout and object layout use dreq->bytes_left.
Signed-off-by: Peng Tao <tao.peng@emc.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
diff --git a/fs/nfs/direct.c b/fs/nfs/direct.c
index 4be8673..cae26cb 100644
--- a/fs/nfs/direct.c
+++ b/fs/nfs/direct.c
@@ -46,6 +46,7 @@
#include <linux/kref.h>
#include <linux/slab.h>
#include <linux/task_io_accounting_ops.h>
+#include <linux/module.h>
#include <linux/nfs_fs.h>
#include <linux/nfs_page.h>
@@ -191,6 +192,12 @@
kref_put(&dreq->kref, nfs_direct_req_free);
}
+ssize_t nfs_dreq_bytes_left(struct nfs_direct_req *dreq)
+{
+ return dreq->bytes_left;
+}
+EXPORT_SYMBOL_GPL(nfs_dreq_bytes_left);
+
/*
* Collects and returns the final error value/byte-count.
*/