[PATCH net-next v1 0/2] net/smc: fix v2 slot clearing and reduce TX slot contention

This series contains the two reviewed patches from the previously posted
"net/smc: transition to RDMA core CQ pooling" series (v4), reposted as a
standalone series so they can land independently. The remaining CQ pooling
patch will be reposted separately after these two are merged.

Patch 1 fixes smc_wr_tx_put_slot() to clear the v2 pending slot and buffer
structures instead of the pointer variables, the memset targets were the
8-byte pointers themselves so the structures were never actually cleared.
Patch 2 reduces TX slot contention by switching TX slot allocation from
non-exclusive wait_event() to prepare_to_wait_exclusive(), avoiding
thundering-herd wakes when slots are scarce.

Link: https://lore.kernel.org/netdev/[email protected]/
Link: https://lore.kernel.org/netdev/[email protected]/

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This is a repost of patch 1/2 and 2/2 from the v4 "net/smc: transition to
RDMA core CQ pooling" series, with no code changes. Version numbering is
restarted at v1 since the series is now standalone.

D. Wythe (2):
  net/smc: clear the correct v2 slot and buffer in smc_wr_tx_put_slot()
  net/smc: reduce TX slot contention with exclusive wait

 net/smc/smc_wr.c | 44 ++++++++++++++++++++++++++++++--------------
 1 file changed, 30 insertions(+), 14 deletions(-)

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2.45.0