Recently lockless_dereference() was added which can be used in place of hard-coding smp_read_barrier_depends(). http://lkml.iu.edu/hypermail/linux/kernel/1410.3/04561.html The following series tries to do this. There are still some hard-coded locations which I was not sure how to replace with. I will send in separate patches/questions regarding them. Pranith Kumar (16): crypto: caam - Remove unnecessary smp_read_barrier_depends() doc: memory-barriers.txt: Document use of lockless_dereference() drivers: dma: Replace smp_read_barrier_depends() with lockless_dereference() dcache: Replace smp_read_barrier_depends() with lockless_dereference() overlayfs: Replace smp_read_barrier_depends() with lockless_dereference() assoc_array: Replace smp_read_barrier_depends() with lockless_dereference() hyperv: Replace smp_read_barrier_depends() with lockless_dereference() rcupdate: Replace smp_read_barrier_depends() with lockless_dereference() percpu: Replace smp_read_barrier_depends() with lockless_dereference() perf: Replace smp_read_barrier_depends() with lockless_dereference() seccomp: Replace smp_read_barrier_depends() with lockless_dereference() task_work: Replace smp_read_barrier_depends() with lockless_dereference() ksm: Replace smp_read_barrier_depends() with lockless_dereference() slab: Replace smp_read_barrier_depends() with lockless_dereference() netfilter: Replace smp_read_barrier_depends() with lockless_dereference() rxrpc: Replace smp_read_barrier_depends() with lockless_dereference() Documentation/memory-barriers.txt | 2 +- drivers/crypto/caam/jr.c | 3 --- drivers/dma/ioat/dma_v2.c | 3 +-- drivers/dma/ioat/dma_v3.c | 3 +-- fs/dcache.c | 7 ++----- fs/overlayfs/super.c | 4 +--- include/linux/assoc_array_priv.h | 11 +++++++---- include/linux/hyperv.h | 9 ++++----- include/linux/percpu-refcount.h | 4 +--- include/linux/rcupdate.h | 10 +++++----- kernel/events/core.c | 3 +-- kernel/events/uprobes.c | 8 ++++---- kernel/seccomp.c | 7 +++---- kernel/task_work.c | 3 +-- lib/assoc_array.c | 7 ------- mm/ksm.c | 7 +++---- mm/slab.h | 6 +++--- net/ipv4/netfilter/arp_tables.c | 3 +-- net/ipv4/netfilter/ip_tables.c | 3 +-- net/ipv6/netfilter/ip6_tables.c | 3 +-- net/rxrpc/ar-ack.c | 22 +++++++++------------- security/keys/keyring.c | 6 ------ 22 files changed, 50 insertions(+), 84 deletions(-) -- 1.9.1 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>