On 10/22/18 11:51 AM, Konstantin Belousov wrote:
On Mon, Oct 22, 2018 at 08:58:28AM +0000, Hans Petter Selasky wrote:
Author: hselasky
Date: Mon Oct 22 08:58:27 2018
New Revision: 339582
URL: https://svnweb.freebsd.org/changeset/base/339582
Log:
Drop sequencer mutex around uiomove() and make sure we don't move more bytes
than is available, else a panic might happen.
And why it is safe to drop the mutex ?
If it is safe to drop, why do you need the mutex at all ?
The seq mutex protects the queue state, which is entirely computed prior
or after uiomove().
--HPS
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