|author||Sebastian Ott <email@example.com>||2010-02-26 22:37:25 +0100|
|committer||Martin Schwidefsky <firstname.lastname@example.org>||2010-02-26 22:37:29 +0100|
[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 <email@example.com> Signed-off-by: Martin Schwidefsky <firstname.lastname@example.org>
Diffstat (limited to 'Documentation/s390')
1 files changed, 6 insertions, 0 deletions
diff --git a/Documentation/s390/CommonIO b/Documentation/s390/CommonIO
index 339207d11d95..d378cba66456 100644
@@ -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.
+ 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.