t/io_uring: don't make setrlimit() failing fatal

We don't even need this on newer kernels, so just ignore it if it
fails. The worst that can happen is that buffer registration will
fail.

Signed-off-by: Jens Axboe <axboe@kernel.dk>

diff --git a/t/io_uring.c b/t/io_uring.c
index 28c76b02a6261544f0ea613ff0b70ded095e3a52..77d27859710301a5a9eb09bbc273ba27b6b73c31 100644 (file)
--- a/t/io_uring.c
+++ b/t/io_uring.c
@@ -468,6 +468,13 @@ static int setup_ring(struct submitter *s)
        io_uring_probe(fd);
 
        if (fixedbufs) {
+               struct rlimit rlim;
+
+               rlim.rlim_cur = RLIM_INFINITY;
+               rlim.rlim_max = RLIM_INFINITY;
+               /* ignore potential error, not needed on newer kernels */
+               setrlimit(RLIMIT_MEMLOCK, &rlim);
+
                ret = io_uring_register_buffers(s);
                if (ret < 0) {
                        perror("io_uring_register_buffers");
@@ -646,17 +653,6 @@ int main(int argc, char *argv[])
                        j = 0;
        }
 
-       if (fixedbufs) {
-               struct rlimit rlim;
-
-               rlim.rlim_cur = RLIM_INFINITY;
-               rlim.rlim_max = RLIM_INFINITY;
-               if (setrlimit(RLIMIT_MEMLOCK, &rlim) < 0) {
-                       perror("setrlimit");
-                       return 1;
-               }
-       }
-
        arm_sig_int();
 
        for (j = 0; j < nthreads; j++) {