From: "D. Wythe" <alibuda@linux.alibaba.com>
To: "David S. Miller" <davem@davemloft.net>,
Andrew Morton <akpm@linux-foundation.org>,
Dust Li <dust.li@linux.alibaba.com>,
Eric Dumazet <edumazet@google.com>,
Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>,
Sidraya Jayagond <sidraya@linux.ibm.com>,
Uladzislau Rezki <urezki@gmail.com>,
Wenjia Zhang <wenjia@linux.ibm.com>
Cc: Mahanta Jambigi <mjambigi@linux.ibm.com>,
Simon Horman <horms@kernel.org>,
Tony Lu <tonylu@linux.alibaba.com>,
Wen Gu <guwen@linux.alibaba.com>,
linux-kernel@vger.kernel.org, linux-mm@kvack.org,
linux-rdma@vger.kernel.org, linux-s390@vger.kernel.org,
netdev@vger.kernel.org, oliver.yang@linux.alibaba.com
Subject: [PATCH net-next 0/3] net/smc: buffer allocation and registration improvements
Date: Fri, 23 Jan 2026 16:23:46 +0800 [thread overview]
Message-ID: <20260123082349.42663-1-alibuda@linux.alibaba.com> (raw)
This series improves SMC-R buffer management by refining the allocation
logic and reducing hardware resource overhead during registration.
The primary improvement is the significant reduction in MTTE consumption.
By aligning IB registration with the actual physical block sizes, we can
reduce the entry count from one per 4KB page to just one per contiguous
block. This is especially beneficial for large buffers, preventing
hardware resource exhaustion on RDMA NICs.
D. Wythe (3):
net/smc: cap allocation order for SMC-R physically contiguous buffers
mm: vmalloc: export find_vm_area()
net/smc: optimize MTTE consumption for SMC-R buffers
mm/vmalloc.c | 1 +
net/smc/smc_core.c | 31 ++++++++++++++++++-------------
net/smc/smc_ib.c | 23 ++++++++++++++++++++---
3 files changed, 39 insertions(+), 16 deletions(-)
--
2.45.0
next reply other threads:[~2026-01-23 8:24 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-01-23 8:23 D. Wythe [this message]
2026-01-23 8:23 ` [PATCH net-next 1/3] net/smc: cap allocation order for SMC-R physically contiguous buffers D. Wythe
2026-01-23 10:54 ` Alexandra Winter
2026-01-24 9:22 ` D. Wythe
2026-01-23 8:23 ` [PATCH net-next 2/3] mm: vmalloc: export find_vm_area() D. Wythe
2026-01-23 14:44 ` Christoph Hellwig
2026-01-23 18:55 ` Uladzislau Rezki
2026-01-24 9:35 ` D. Wythe
2026-01-24 10:48 ` Uladzislau Rezki
2026-01-24 14:57 ` D. Wythe
2026-01-26 10:28 ` Uladzislau Rezki
2026-01-26 12:02 ` D. Wythe
2026-01-26 16:45 ` Uladzislau Rezki
2026-01-27 13:34 ` Leon Romanovsky
2026-01-28 3:45 ` D. Wythe
2026-01-28 11:13 ` Leon Romanovsky
2026-01-28 12:44 ` D. Wythe
2026-01-28 13:49 ` Leon Romanovsky
2026-01-29 11:03 ` D. Wythe
2026-01-29 12:22 ` Leon Romanovsky
2026-01-29 14:04 ` D. Wythe
2026-01-28 18:06 ` Jason Gunthorpe
2026-01-29 11:36 ` D. Wythe
2026-01-29 13:20 ` Jason Gunthorpe
2026-01-30 8:51 ` D. Wythe
2026-01-30 15:16 ` Jason Gunthorpe
2026-02-03 9:14 ` D. Wythe
2026-01-23 8:23 ` [PATCH net-next 3/3] net/smc: optimize MTTE consumption for SMC-R buffers D. Wythe
2026-01-23 14:52 ` Christoph Hellwig
2026-01-24 9:25 ` D. Wythe
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