NFS: Write the entire file if a server reboot occurs during fsync()
This is to ensure that we don't clear the NFS_CONTEXT_RESEND_WRITES
flag while there are still writes that haven't been resent.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
diff --git a/fs/nfs/nfs4file.c b/fs/nfs/nfs4file.c
index eef1b38..afddd66 100644
--- a/fs/nfs/nfs4file.c
+++ b/fs/nfs/nfs4file.c
@@ -105,6 +105,13 @@
/* application has asked for meta-data sync */
ret = pnfs_layoutcommit_inode(inode, true);
mutex_unlock(&inode->i_mutex);
+ /*
+ * If nfs_file_fsync_commit detected a server reboot, then
+ * resend all dirty pages that might have been covered by
+ * the NFS_CONTEXT_RESEND_WRITES flag
+ */
+ start = 0;
+ end = LLONG_MAX;
} while (ret == -EAGAIN);
return ret;