On Thu, Jun 07, 2018 at 02:58:12PM +0100, Daniel P. Berrangé wrote:
On Thu, Jun 07, 2018 at 03:54:24PM +0200, Martin Kletzander wrote:We already have virFileLock(), but we are now using flock() in the code as well (due to requirements for mutual exclusion between libvirt and other programs using flock() as well), so let's have a function for that as well so we don't need to have stubs for unsupported platforms in other files.Sigh, what program is using the flock interface ?
It is required (in the docs [1]) for the /sys/fs/resctrl so that all possible programs that will access that directory are mutually excluded. The only way this will work is when all of them behave according to the documentation. [1] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/Documentation/x86/intel_rdt_ui.txt
Regards, Daniel -- |: https://berrange.com -o- https://www.flickr.com/photos/dberrange :| |: https://libvirt.org -o- https://fstop138.berrange.com :| |: https://entangle-photo.org -o- https://www.instagram.com/dberrange :|
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