Re: [libvirt] [PATCH 03/10] util: Introduce virFileFlock
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/D...
Regards,
Daniel
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