From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jan Harkes Subject: [RFC][PATCH 0/3] Coda: remove BKL Date: Wed, 20 Oct 2010 16:23:01 -0400 Message-ID: <1287606184-26889-1-git-send-email-jaharkes@cs.cmu.edu> Cc: linux-kernel@vger.kernel.org, arnd@arndb.de To: linux-fsdevel@vger.kernel.org Return-path: Received: from BERING.ISR.CS.CMU.EDU ([128.2.209.223]:44641 "EHLO bering.isr.cs.cmu.edu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755435Ab0JTUXZ (ORCPT ); Wed, 20 Oct 2010 16:23:25 -0400 Sender: linux-fsdevel-owner@vger.kernel.org List-ID: The following three patches remove the big kernel lock from the Coda file system kernel module. We initially add a spinlock to protect the Coda-specific inode data. After this we can push the BKL all the way down to where the requests are queued for the userspace Coda cache manager process and finally we replace the remaining BKL uses with a mutex that protects the upcall queues. Yoshihisa Abe (3): Coda: add spin lock to protect accesses to struct coda_inode_info. Coda: push BKL regions into coda_upcall() Coda: replace BKL with mutex fs/coda/cache.c | 17 ++++-- fs/coda/cnode.c | 19 ++++-- fs/coda/dir.c | 158 ++++++++++++++------------------------------ fs/coda/file.c | 31 ++++----- fs/coda/inode.c | 57 +++++++++------- fs/coda/pioctl.c | 22 ++----- fs/coda/psdev.c | 30 +++++---- fs/coda/symlink.c | 3 - fs/coda/upcall.c | 24 +++++-- include/linux/coda_fs_i.h | 13 +++- include/linux/coda_linux.h | 6 ++- include/linux/coda_psdev.h | 2 + 12 files changed, 177 insertions(+), 205 deletions(-)