[PATCH] qemuNamespaceMknodPaths: Don't fork needlessly

The qemuNamespaceMknodPaths() function is responsible for creating files/directories in QEMU's mount namespace. When called, it is given list of paths that have to be created in the namespace. It processes this list and removes items that are not directly under /dev, but on a 'shared' filesystem (note that all other mount points are preserved). And it may so happen that after this pre-process no files/directories need to be created in the namespace. If that's the case, exit early and avoid fork()-ing only to find out the same. Signed-off-by: Michal Privoznik <mprivozn(a)redhat.com&gt; --- src/qemu/qemu_namespace.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/src/qemu/qemu_namespace.c b/src/qemu/qemu_namespace.c index 09e235e120..a2c31310d9 100644 --- a/src/qemu/qemu_namespace.c +++ b/src/qemu/qemu_namespace.c @@ -1293,6 +1293,9 @@ qemuNamespaceMknodPaths(virDomainObj *vm, goto cleanup; } + if (data.nitems == 0) + return 0; + for (i = 0; i < data.nitems; i++) { qemuNamespaceMknodItem *item = &data.items[i]; if (item->target && -- 2.35.1