Hello, syzbot tried to test the proposed patch but the build/boot failed: net/smc/smc_pnet.h:32:2: error: unknown type name 'mutex' Tested on: commit: 5c1ee569 Merge branch 'for-5.17-fixes' of git://git.ke.. git tree: upstream dashboard link: https://syzkaller.appspot.com/bug?extid=4f322a6d84e991c38775 compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 patch: https://syzkaller.appspot.com/x/patch.diff?x=116231fe700000