[PATCH v2 2/2] resctrl: Use exclusive lock for /sys/fs/resctrl

That's the way it should've been all the time. It was originally the case, but then the rework to virFileFlock() made the function ambiguous when it was created in commit 5a0a5f7fb5f5, and due to that it was misused in commit 657ddeff2313 and since then the lock being taken was shared rather than exclusive. Signed-off-by: Martin Kletzander <mkletzan(a)redhat.com&gt; Reviewed-by: Andrea Bolognani <abologna(a)redhat.com&gt; --- src/util/virresctrl.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/src/util/virresctrl.c b/src/util/virresctrl.c index b685b8bb6f7b..784a8d43bb2f 100644 --- a/src/util/virresctrl.c +++ b/src/util/virresctrl.c @@ -463,7 +463,7 @@ virResctrlLockWrite(void) return -1; } - if (virFileFlock(fd, VIR_FILE_FLOCK_SHARED) < 0) { + if (virFileFlock(fd, VIR_FILE_FLOCK_EXCLUSIVE) < 0) { virReportSystemError(errno, "%s", _("Cannot lock resctrl")); VIR_FORCE_CLOSE(fd); return -1; -- 2.27.0