Hello!
A relatively common misuse of these barriers is to apply these to
operations which are not read-modify-write operations, such as
atomic_set() and atomic_read(); examples were discussed in [1].
This series attempts to fix those uses by (conservatively) replacing
the smp_mb__{before,after}_atomic() barriers with full memory barriers.
Applies on 5.1-rc7.
Thanks,
Andrea
Cc: "Paul E. McKenney" <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Rob Clark <[email protected]>
Cc: Sean Paul <[email protected]>
Cc: David Airlie <[email protected]>
Cc: Daniel Vetter <[email protected]>
Cc: Jordan Crouse <[email protected]>
Cc: Jens Axboe <[email protected]>
Cc: Omar Sandoval <[email protected]>
Cc: "Yan, Zheng" <[email protected]>
Cc: Sage Weil <[email protected]>
Cc: Ilya Dryomov <[email protected]>
Cc: Dennis Dalessandro <[email protected]>
Cc: Mike Marciniszyn <[email protected]>
Cc: Doug Ledford <[email protected]>
Cc: Jason Gunthorpe <[email protected]>
[1] http://lkml.kernel.org/r/[email protected]
Andrea Parri (5):
drm/msm: Fix improper uses of smp_mb__{before,after}_atomic()
bio: fix improper use of smp_mb__before_atomic()
sbitmap: fix improper use of smp_mb__before_atomic()
ceph: fix improper use of smp_mb__before_atomic()
IB/hfi1: Fix improper uses of smp_mb__before_atomic()
drivers/gpu/drm/msm/adreno/a5xx_preempt.c | 4 ++--
drivers/infiniband/sw/rdmavt/qp.c | 6 +++---
fs/ceph/super.h | 2 +-
include/linux/bio.h | 2 +-
lib/sbitmap.c | 2 +-
5 files changed, 8 insertions(+), 8 deletions(-)
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2.7.4
