+ if (major(st.st_dev) == 0) {
+ _cleanup_fclose_ FILE *f = NULL;
+ int mount_id;
+ union file_handle_union h = { .handle.handle_bytes = MAX_HANDLE_SZ, };
+
+ /* Might be btrfs, which exposes "ssd" as mount flag if it is on ssd.
+ *
+ * We first determine the mount ID here, if we can,
+ * and then lookup the mount ID in mountinfo to find
+ * the mount options. */
+
+ r = name_to_handle_at(AT_FDCWD, p, &h.handle, &mount_id, AT_SYMLINK_FOLLOW);
+ if (r < 0)
+ return false;
+
+ f = fopen("/proc/self/mountinfo", "re");
+ if (!f)
+ return false;
+
+ for (;;) {
+ char line[LINE_MAX], *e;
+ _cleanup_free_ char *opts = NULL;
+ int mid;
+
+ if (!fgets(line, sizeof(line), f))
+ return false;
+
+ truncate_nl(line);
+
+ if (sscanf(line, "%i", &mid) != 1)
+ continue;
+
+ if (mid != mount_id)
+ continue;
+
+ e = strstr(line, " - ");
+ if (!e)
+ continue;
+
+ if (sscanf(e+3, "%*s %*s %ms", &opts) != 1)
+ continue;
+
+ if (streq(opts, "ssd") || startswith(opts, "ssd,") || endswith(opts, ",ssd") || strstr(opts, ",ssd,"))
+ return true;
+ }
+