Add #[inline] to memfd_create

Author: saethlin

src/sys/memfd.rs

@@ -40,6 +40,7 @@ libc_bitflags!(
 /// For more information, see [`memfd_create(2)`].
 ///
 /// [`memfd_create(2)`]: https://man7.org/linux/man-pages/man2/memfd_create.2.html
+#[inline] // Delay codegen of this function so it doesn't interfere on builds against old glibc.
 pub fn memfd_create(name: &CStr, flags: MemFdCreateFlag) -> Result<OwnedFd> {
     let res = unsafe {
         cfg_if! {