From 879acca58a904c25487c89ab11e23eb556fb13d3 Mon Sep 17 00:00:00 2001 From: Sebastian Ott Date: Fri, 26 Feb 2010 22:37:25 +0100 Subject: [S390] cio: introduce cio_settle This patch introduces a proc file cio_settle. A write request to this file is blocked until all queued cio actions are handled. This will allow userspace to wait for pending work affecting device availability after changing cio_ignore or the hardware configuration. Signed-off-by: Sebastian Ott Signed-off-by: Martin Schwidefsky --- Documentation/s390/CommonIO | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'Documentation/s390') diff --git a/Documentation/s390/CommonIO b/Documentation/s390/CommonIO index 339207d11d95..d378cba66456 100644 --- a/Documentation/s390/CommonIO +++ b/Documentation/s390/CommonIO @@ -87,6 +87,12 @@ Command line parameters compatibility, by the device number in hexadecimal (0xabcd or abcd). Device numbers given as 0xabcd will be interpreted as 0.0.abcd. +* /proc/cio_settle + + A write request to this file is blocked until all queued cio actions are + handled. This will allow userspace to wait for pending work affecting + device availability after changing cio_ignore or the hardware configuration. + * For some of the information present in the /proc filesystem in 2.4 (namely, /proc/subchannels and /proc/chpids), see driver-model.txt. Information formerly in /proc/irq_count is now in /proc/interrupts. -- cgit v1.2.3