linux-kernel - [PATCH 0/2] cleanup: A couple extensions for conditional resource management

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Date: Tue, 27 Feb 2024 08:48:47 -0800
From: Dan Williams <dan.j.williams@...el.com>
To: torvalds@...ux-foundation.org, peterz@...radead.org,
 gregkh@...uxfoundation.org
Cc: Ira Weiny <ira.weiny@...el.com>, Dave Jiang <dave.jiang@...el.com>,
 Jonathan Cameron <Jonathan.Cameron@...wei.com>,
 "Fabio M. De Francesco" <fabio.maria.de.francesco@...ux.intel.com>,
 linux-kernel@...r.kernel.org, linux-cxl@...r.kernel.org
Subject: [PATCH 0/2] cleanup: A couple extensions for conditional resource
 management

Hi Peter, Linus, Greg,

The cond_guard() patch has gone through several rounds of review and is
looking good to me, but is missing feedback from one of you that have
been grappling with a cross-kernel view of what these new facilities
should look like.

Separately I have been running into trouble trying to fit no_free_ptr()
into some cleanup patches and thought of another way to build on the
conditional syntax originated in scoped_cond_guard().

More specifically, scoped_cond_guard() introduced the concept of passing
a statement to the macro to handle the failure case. cond_guard()
extends that to be used within an existing scope to automatically
release a conditionally acquired lock rather than defining a new scope.

The cond_no_free_ptr() helper takes that concept for ending the cleanup
scope for objects when responsibility for freeing them has been
transferred to a 3rd object or subsystem.

---

Dan Williams (1):
      cleanup: Introduce cond_no_free_ptr()

Fabio M. De Francesco (1):
      cleanup: Add cond_guard() to conditional guards

 include/linux/cleanup.h |   42 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 42 insertions(+)

base-commit: 54be6c6c5ae8e0d93a6c4641cb7528eb0b6ba478