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Commit c64fb5c7 authored by Christoph Hellwig's avatar Christoph Hellwig Committed by Al Viro
Browse files

filemap: remove pos variables in generic_file_read_iter 



Just use ki_pos directly to make everyones life easier.

Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
Signed-off-by: default avatarAl Viro <viro@zeniv.linux.org.uk>
parent bf162006

mm/filemap.c

+7 −8
Original line number Diff line number Diff line
@@ -1838,8 +1838,6 @@ generic_file_read_iter(struct kiocb *iocb, struct iov_iter *iter) 
{

	struct file *file = iocb->ki_filp;

	ssize_t retval = 0;

	loff_t *ppos = &iocb->ki_pos;

	loff_t pos = *ppos;

	size_t count = iov_iter_count(iter);



	if (!count)
@@ -1851,15 +1849,16 @@ generic_file_read_iter(struct kiocb *iocb, struct iov_iter *iter) 
		loff_t size;



		size = i_size_read(inode);

		retval = filemap_write_and_wait_range(mapping, pos,

					pos + count - 1);

		retval = filemap_write_and_wait_range(mapping, iocb->ki_pos,

					iocb->ki_pos + count - 1);

		if (!retval) {

			struct iov_iter data = *iter;

			retval = mapping->a_ops->direct_IO(iocb, &data, pos);

			retval = mapping->a_ops->direct_IO(iocb, &data,

					iocb->ki_pos);

		}



		if (retval > 0) {

			*ppos = pos + retval;

			iocb->ki_pos += retval;

			iov_iter_advance(iter, retval);

		}
@@ -1872,14 +1871,14 @@ generic_file_read_iter(struct kiocb *iocb, struct iov_iter *iter) 
		 * the rest of the read.  Buffered reads will not work for

		 * DAX files, so don't bother trying.

		 */

		if (retval < 0 || !iov_iter_count(iter) || *ppos >= size ||

		if (retval < 0 || !iov_iter_count(iter) || iocb->ki_pos >= size ||

		    IS_DAX(inode)) {

			file_accessed(file);

			goto out;

		}

	}



	retval = do_generic_file_read(file, ppos, iter, retval);

	retval = do_generic_file_read(file, &iocb->ki_pos, iter, retval);

out:

	return retval;

}