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>
diff --git a/drivers/block/loop.c b/drivers/block/loop.c
index ebbd0c3..b64649b 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;