commit af436472772d474acfad724ce789e003d1ca41c3
author Christoph Hellwig <hch@lst.de> Wed Jul 30 07:18:48 2014 -0400
committer Al Viro <viro@zeniv.linux.org.uk> Fri Aug 01 02:35:51 2014 -0400
tree 282f8b70abda0aa10827d4237cee4c408260748c
parent 6f0928036bcbd8dd2ebee9201580da8bcc0a81af

direct-io: fix AIO regression

The direct-io.c rewrite to use the iov_iter infrastructure stopped updating
the size field in struct dio_submit, and thus rendered the check for
allowing asynchronous completions to always return false.  Fix this by
comparing it to the count of bytes in the iov_iter instead.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reported-by: Tim Chen <tim.c.chen@linux.intel.com>
Tested-by: Tim Chen <tim.c.chen@linux.intel.com>