linux-kernel - [PATCH 0/5] Kill the BKL in compat ioctl handling

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Date:	Thu,  6 Aug 2009 15:09:25 +0200
From:	Arnd Bergmann <arnd@...db.de>
To:	linux-kernel@...r.kernel.org
Cc:	Christoph Hellwig <hch@....de>, Andi Kleen <andi@...stfloor.org>,
	Alexander Viro <viro@...iv.linux.org.uk>,
	Arnd Bergmann <arnd@...db.de>
Subject: [PATCH 0/5] Kill the BKL in compat ioctl handling

I noticed that compat_sys_ioctl still holds the big kernel
lock for all ioctl conversion handlers. It would be easy to
push this one level down and only do it where necessary,
but I decided to clean it up some more at the same time
and move all the VT ioctl handling into the specific drivers.

	Arnd <><

  arch/um: handle compat_ioctl in tty line driver
  s390: move keyboard compat ioctls into tty3270 driver
  tty: handle VT specific compat ioctls in vt driver
  compat_ioctl: remove VT specific ioctl handlers
  compat_ioctl: do not hold BKL in handlers

 arch/um/drivers/line.c          |    6 +
 arch/um/drivers/ssl.c           |    1 +
 arch/um/drivers/stdio_console.c |    1 +
 arch/um/include/shared/line.h   |    2 +
 drivers/char/vt.c               |    3 +
 drivers/char/vt_ioctl.c         |  203 +++++++++++++++++++++++++++++++++++++
 drivers/s390/char/tty3270.c     |   19 ++++
 fs/compat_ioctl.c               |  213 ---------------------------------------
 include/linux/tty.h             |    3 +
 9 files changed, 238 insertions(+), 213 deletions(-)

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