Commits
Heiko Carstens committed 0c44ca71f59
s390/cmpxchg: add missing memory barrier to cmpxchg64 All cmpxchg functions imply a memory barrier. cmpxch64 did not have one for 31 bit code, so add it. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>