Re: [PATCH] RDMA/cma: Split apart the multiple uses of the same list heads

[Jason Gunthorpe <jgg@nvidia.com>]

On Wed, Sep 15, 2021 at 01:25:19PM -0300, Jason Gunthorpe wrote:
> Two list heads in the rdma_id_private are being used for multiple
> purposes, to save a few bytes of memory. Give the different purposes
> different names and union the memory that is clearly exclusive.
> 
> list splits into device_item and listen_any_item. device_item is threaded
> onto the cma_device's list and listen_any goes onto the
> listen_any_list. IDs doing any listen cannot have devices.
> 
> listen_list splits into listen_item and listen_list. listen_list is on the
> parent listen any rdma_id_private and listen_item is on child listen that
> is bound to a specific cma_dev.
> 
> Which name should be used in which case depends on the state and other
> factors of the rdma_id_private. Remap all the confusing references to make
> sense with the new names, so at least there is some hope of matching the
> necessary preconditions with each access.
> 
> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
> ---
>  drivers/infiniband/core/cma.c      | 34 ++++++++++++++++--------------
>  drivers/infiniband/core/cma_priv.h | 11 ++++++++--
>  2 files changed, 27 insertions(+), 18 deletions(-)

Applied to for-next

Jason