[PATCH 2/2] NFS: call block plug around direct read

[Peng Tao <bergwolf@gmail.com>]

Signed-off-by: Peng Tao <tao.peng@emc.com>
---
 fs/nfs/direct.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/fs/nfs/direct.c b/fs/nfs/direct.c
index a485560..2cf3b45 100644
--- a/fs/nfs/direct.c
+++ b/fs/nfs/direct.c
@@ -866,6 +866,7 @@ ssize_t nfs_file_direct_read(struct kiocb *iocb, const struct iovec *iov,
 	ssize_t retval = -EINVAL;
 	struct file *file = iocb->ki_filp;
 	struct address_space *mapping = file->f_mapping;
+	struct blk_plug plug;
 	size_t count;
 
 	count = iov_length(iov, nr_segs);
@@ -886,7 +887,9 @@ ssize_t nfs_file_direct_read(struct kiocb *iocb, const struct iovec *iov,
 
 	task_io_account_read(count);
 
+	blk_start_plug(&plug);
 	retval = nfs_direct_read(iocb, iov, nr_segs, pos);
+	blk_finish_plug(&plug);
 	if (retval > 0)
 		iocb->ki_pos = pos + retval;
 
-- 
1.7.1.262.g5ef3d