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| author | Yanfei Xu <yanfei.xu@windriver.com> | 2021-10-13 15:41:53 +0200 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2021-10-19 17:27:05 +0200 |
| commit | 7cdacc5f52d68a9370f182c844b5b3e6cc975cc1 (patch) | |
| tree | a31349ae579c5b8be359cee93360c70cd48f218e /kernel/smpboot.c | |
| parent | docs: futex: Fix kernel-doc references (diff) | |
| download | linux-7cdacc5f52d68a9370f182c844b5b3e6cc975cc1.tar.xz linux-7cdacc5f52d68a9370f182c844b5b3e6cc975cc1.zip | |
locking/rwsem: Disable preemption for spinning region
The spinning region rwsem_spin_on_owner() should not be preempted,
however the rwsem_down_write_slowpath() invokes it and don't disable
preemption. Fix it by adding a pair of preempt_disable/enable().
Signed-off-by: Yanfei Xu <yanfei.xu@windriver.com>
[peterz: Fix CONFIG_RWSEM_SPIN_ON_OWNER=n build]
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Waiman Long <longman@redhat.com>
Link: https://lore.kernel.org/r/20211013134154.1085649-3-yanfei.xu@windriver.com
Diffstat (limited to 'kernel/smpboot.c')
0 files changed, 0 insertions, 0 deletions