linux-kernel - [PATCH v2 0/2] Fixes for fscache volume operations

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Date:   Mon, 26 Dec 2022 18:33:07 +0800
From:   Hou Tao <houtao@...weicloud.com>
To:     linux-cachefs@...hat.com
Cc:     David Howells <dhowells@...hat.com>,
        Jeff Layton <jlayton@...nel.org>, linux-erofs@...ts.ozlabs.org,
        linux-kernel@...r.kernel.org,
        Jingbo Xu <jefflexu@...ux.alibaba.com>, houtao1@...wei.com
Subject: [PATCH v2 0/2] Fixes for fscache volume operations

From: Hou Tao <houtao1@...wei.com>

Hi,

The patchset includes two fixes for fscache volume operations: patch 1
fixes the hang problem during volume acquisition when the volume
acquisition process waits for the freeing of relinquished volume, patch
2 adds the missing memory barrier in fscache_create_volume_work() and it
is spotted through code review when checking whether or not these is
missing smp_mb() before invoking wake_up_bit().

Comments are always welcome.

Chang Log:
v2:
 * rebased on v6.1-rc1
 * Patch 1: use wait_on_bit() instead (Suggested by David)
 * Patch 2: add the missing smp_mb() in fscache_create_volume_work()

v1: https://listman.redhat.com/archives/linux-cachefs/2022-December/007384.html

Hou Tao (2):
  fscache: Use wait_on_bit() to wait for the freeing of relinquished
    volume
  fscache: Add the missing smp_mb__after_atomic() before wake_up_bit()

 fs/fscache/volume.c | 17 ++++++++++++++---
 1 file changed, 14 insertions(+), 3 deletions(-)

-- 
2.29.2