NFS: Add a count of the number of unstable writes carried by an inode

In order to know when we should do opportunistic commits of the unstable
writes, when the VM is doing a background flush, we add a field to count
the number of unstable writes.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/include/linux/nfs_fs.h b/include/linux/nfs_fs.h
index 384ea3ef2863..309217f46e28 100644
--- a/include/linux/nfs_fs.h
+++ b/include/linux/nfs_fs.h
@@ -166,6 +166,7 @@ struct nfs_inode {
         struct radix_tree_root  nfs_page_tree;
 
         unsigned long           npages;
+        unsigned long           ncommit;
 
         /* Open contexts for shared mmap writes */
         struct list_head        open_files;