lkml.org 
[lkml]   [2019]   [Jul]   [10]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH] dax: Fix missed PMD wakeups
On Wed, Jul 10, 2019 at 09:02:04PM +0200, Jan Kara wrote:
> @@ -848,7 +853,7 @@ static int dax_writeback_one(struct xa_state *xas, struct dax_device *dax_dev,
> if (unlikely(dax_is_locked(entry))) {
> void *old_entry = entry;
>
> - entry = get_unlocked_entry(xas);
> + entry = get_unlocked_entry(xas, 0);
>
> /* Entry got punched out / reallocated? */
> if (!entry || WARN_ON_ONCE(!xa_is_value(entry)))

I'm not sure about this one. Are we sure there will never be a dirty
PMD entry? Even if we can't create one today, it feels like a bit of
a landmine to leave for someone who creates one in the future.

\
 
 \ /
  Last update: 2019-07-11 05:09    [W:0.624 / U:0.036 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site