Re: [PATCH] Fix io_read() and io_write() when io_import_fixed() is used.

From: Jens Axboe
Date: Tue Feb 04 2020 - 09:01:11 EST


On 2/4/20 4:20 AM, David Laight wrote:
> io_import_fixed() returns 0 on success so io_import_iovec() may
> not return the length of the transfer.
>
> Instead always use the value from iov_iter_count()
> (Which is called at the same place.)
>
> Fixes 9d93a3f5a (modded by 491381ce0) and 9e645e110.

What kernel is this against? This shouldn't be an issue
in anything newer than 5.3-stable.

--
Jens Axboe