staging/rdma/hfi1: Reduce snoop locking scope in IOCTL handler.
This patch avoids issues while calling into copy from/to user while holding the lock by only taking the lock when it is absolutely required. The only commands which require the snoop lock are: *Set Filter *Clear Filter *Clear Queue Reviewed-by:Mike Marciniszyn <mike.marciniszyn@intel.com> Signed-off-by:
Dennis Dalessandro <dennis.dalessandro@intel.com> Signed-off-by:
Ira Weiny <ira.weiny@intel.com> Signed-off-by:
Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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