fs: implement vfs_iter_read using do_iter_read

De-dupliate some code and allow for passing the flags argument to
vfs_iter_read.  Additional it properly updates atime now.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

1 files changed, 2 insertions, 2 deletions

diff --git a/drivers/block/loop.c b/drivers/block/loop.c
index ebbd0c3fe0ed..b64649bec64e 100644
--- a/drivers/block/loop.c
+++ b/drivers/block/loop.c
@@ -342,7 +342,7 @@ static int lo_read_simple(struct loop_device *lo, struct request *rq,
 
         rq_for_each_segment(bvec, rq, iter) {
                 iov_iter_bvec(&i, ITER_BVEC, &bvec, 1, bvec.bv_len);
-                len = vfs_iter_read(lo->lo_backing_file, &i, &pos);
+                len = vfs_iter_read(lo->lo_backing_file, &i, &pos, 0);
                 if (len < 0)
                         return len;
 
@@ -383,7 +383,7 @@ static int lo_read_transfer(struct loop_device *lo, struct request *rq,
                 b.bv_len = bvec.bv_len;
 
                 iov_iter_bvec(&i, ITER_BVEC, &b, 1, b.bv_len);
-                len = vfs_iter_read(lo->lo_backing_file, &i, &pos);
+                len = vfs_iter_read(lo->lo_backing_file, &i, &pos, 0);
                 if (len < 0) {
                         ret = len;
                         goto out_free_page;