[PATCH] ceph: remove sb_start/end_write in ceph_aio_write.

[majianpeng <majianpeng@gmail.com>]

Either in vfs_write or io_submit,it call file_start/end_write.
The different between file_start/end_write and sb_start/end_write is
file_ only handle regular file.But i think in ceph_aio_write,it only
for regular file.

Signed-off-by: Jianpeng Ma<majianpeng@gmail.com>
---
  fs/ceph/file.c | 2 --
  1 file changed, 2 deletions(-)

diff --git a/fs/ceph/file.c b/fs/ceph/file.c
index 656e169..7c69f4f 100644
--- a/fs/ceph/file.c
+++ b/fs/ceph/file.c
@@ -716,7 +716,6 @@ static ssize_t ceph_aio_write(struct kiocb *iocb, const struct iovec *iov,
  	if (ceph_snap(inode) != CEPH_NOSNAP)
  		return -EROFS;
  
-	sb_start_write(inode->i_sb);
  	mutex_lock(&inode->i_mutex);
  	hold_mutex = true;
  
@@ -809,7 +808,6 @@ retry_snap:
  out:
  	if (hold_mutex)
  		mutex_unlock(&inode->i_mutex);
-	sb_end_write(inode->i_sb);
  	current->backing_dev_info = NULL;
  
  	return written ? written : err;
-- 1.8.3.rc1.44.gb387c77