svcrdma: Fix race with dto_tasklet in svc_rdma_send

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The svc_rdma_send function will attempt to reap SQ WR to make room for
a new request if it finds the SQ full. This function races with the
dto_tasklet that also reaps SQ WR. To avoid polling and arming the CQ
unnecessarily move the test_and_clear_bit of the RDMAXPRT_SQ_PENDING
flag and arming of the CQ to the sq_cq_reap function.

Refactor the rq_cq_reap function to match sq_cq_reap so that the
code is easier to follow.

Signed-off-by: Tom Tucker <tom@opengridcomputing.com>

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This commit is contained in:

Tom Tucker 2008-05-06 11:33:11 -05:00

parent 0e7f011a19

commit dbcd00eba9

1 changed files with 22 additions and 18 deletions

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net/sunrpc/xprtrdma/svc_rdma_transport.c

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