Merge pull request #2667 from brauner/2018-10-02/prefault_mmaped_conf…

…ig_file parse: prefault config file with MAP_POPULATE
lxc · Oct 2, 2018 · 7040a77 · 7040a77
2 parents 907e133 + 2291ea4
commit 7040a77
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/src/lxc/parse.c b/src/lxc/parse.c
@@ -88,7 +88,8 @@ int lxc_file_for_each_line_mmap(const char *file, lxc_file_cb callback,
 		return 0;
 	}
 
-	buf = lxc_strmmap(NULL, st.st_size, PROT_READ | PROT_WRITE, MAP_PRIVATE, fd, 0);
+	buf = lxc_strmmap(NULL, st.st_size, PROT_READ | PROT_WRITE,
+			  MAP_PRIVATE | MAP_POPULATE, fd, 0);
 	if (buf == MAP_FAILED) {
 		close(fd);
 		return -1;