Make it work even if max_idle_threads is set to 0

It may happen that none of the worker threads are running
if max_idle_threads is set to 0 although few people will do this.
Adding a limit of keeping at least one worker thread will make
our code more rigorous.

Signed-off-by: Zhansong Gao <zhsgao@hotmail.com>

diff --git a/lib/fuse_loop_mt.c b/lib/fuse_loop_mt.c
index 6002e19b9d240316c91dbdc668d8bb8b6b94876f..72c74a83279700a04c67daafd542cf7f60bdb2a5 100644 (file)
--- a/lib/fuse_loop_mt.c
+++ b/lib/fuse_loop_mt.c
@@ -179,7 +179,7 @@ static void *fuse_do_work(void *data)
                 * is indeed a good reason to destruct threads it should be done
                 * delayed, a moving average might be useful for that.
                 */
-               if (mt->max_idle != -1 && mt->numavail > mt->max_idle) {
+               if (mt->max_idle != -1 && mt->numavail > mt->max_idle && mt->numworker > 1) {
                        if (mt->exit) {
                                pthread_mutex_unlock(&mt->lock);
                                return NULL;