From: Andrew Morton <akpm@linux-foundation.org>
To: mm-commits@vger.kernel.org, corbet@lwn.net, sj@kernel.org,
akpm@linux-foundation.org
Subject: [merged] docs-vm-damon-design-update-damon-idle-page-tracking-interference-handling.patch removed from -mm tree
Date: Thu, 24 Mar 2022 18:33:22 -0700 [thread overview]
Message-ID: <20220325013322.D5458C340EC@smtp.kernel.org> (raw)
The patch titled
Subject: Docs/vm/damon/design: update DAMON-Idle Page Tracking interference handling
has been removed from the -mm tree. Its filename was
docs-vm-damon-design-update-damon-idle-page-tracking-interference-handling.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
From: SeongJae Park <sj@kernel.org>
Subject: Docs/vm/damon/design: update DAMON-Idle Page Tracking interference handling
In DAMON's early development stage before it be merged in the mainline, it
was first designed to work exclusively with Idle page tracking to avoid
any interference between each other. Later, but still before be merged in
the mainline, because Idle page tracking is fully under the control of
sysadmins, we made the resolving of conflict as the responsibility of
sysadmins. The document is not updated for the change, though. This
commit updates the document for that.
Link: https://lkml.kernel.org/r/20220222170100.17068-3-sj@kernel.org
Signed-off-by: SeongJae Park <sj@kernel.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---
Documentation/vm/damon/design.rst | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
--- a/Documentation/vm/damon/design.rst~docs-vm-damon-design-update-damon-idle-page-tracking-interference-handling
+++ a/Documentation/vm/damon/design.rst
@@ -84,9 +84,10 @@ table having a mapping to the address.
and clear the bit(s) for next sampling target address and checks whether the
bit(s) set again after one sampling period. This could disturb other kernel
subsystems using the Accessed bits, namely Idle page tracking and the reclaim
-logic. To avoid such disturbances, DAMON makes it mutually exclusive with Idle
-page tracking and uses ``PG_idle`` and ``PG_young`` page flags to solve the
-conflict with the reclaim logic, as Idle page tracking does.
+logic. DAMON does nothing to avoid disturbing Idle page tracking, so handling
+the interference is the responsibility of sysadmins. However, it solves the
+conflict with the reclaim logic using ``PG_idle`` and ``PG_young`` page flags,
+as Idle page tracking does.
Address Space Independent Core Mechanisms
_
Patches currently in -mm which might be from sj@kernel.org are
reply other threads:[~2022-03-25 1:34 UTC|newest]
Thread overview: [no followups] expand[flat|nested] mbox.gz Atom feed
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20220325013322.D5458C340EC@smtp.kernel.org \
--to=akpm@linux-foundation.org \
--cc=corbet@lwn.net \
--cc=linux-kernel@vger.kernel.org \
--cc=mm-commits@vger.kernel.org \
--cc=sj@kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.