Re: [PATCH for-next] RDMA/rxe: Fix rxe_cq_post

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On Mon, Jun 12, 2023 at 10:50:33AM -0500, Bob Pearson wrote:
> A recent patch replaced a tasklet execution of cq->comp_handler
> by a direct call. While this made sense it let changes to cq->notify
> state be unprotected and assumed that the cq completion machinery
> and the ulp done callbacks were reentrant. The result is that in
> some cases completion events can be lost. This patch moves the
> cq->comp_handler call inside of the spinlock in rxe_cq_post which
> solves both issues. This is compatible with the matching code in
> the request notify verb.
> 
> Fixes: 78b26a335310 ("RDMA/rxe: Remove tasklet call from rxe_cq.c")
> Signed-off-by: Bob Pearson <rpearsonhpe@xxxxxxxxx>
> ---
>  drivers/infiniband/sw/rxe/rxe_cq.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)

Applied to for-rc, thanks

Jason



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