xprtrdma: Use sendctx DMA state for Send signaling

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Send signaling matters only when the prepared Send has page
mappings to unmap. Today that test is expressed indirectly with
rl_kref, because the Send-side reference is taken only for Sends
with mapped SGEs.

Split the SGE DMA unmap loop into its own helper and use
sc_unmap_count directly for the signaling decision. This keeps the
current behavior but removes one dependency on the old rl_kref
semantics before the request lifetime rules are changed.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Anna Schumaker <anna.schumaker@hammerspace.com>

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Chuck Lever 2026-05-26 10:14:01 -04:00 • committed by Anna Schumaker

parent 13e198a90c

commit 2797ae7c92

2 changed files with 14 additions and 10 deletions

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2

net/sunrpc/xprtrdma/frwr_ops.c

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22

net/sunrpc/xprtrdma/rpc_rdma.c

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