]> www.infradead.org Git - users/jedix/linux-maple.git/commit
net/smc: set rmb's SG_MAX_SINGLE_ALLOC limitation only when CONFIG_ARCH_NO_SG_CHAIN...
authorGuangguan Wang <guangguan.wang@linux.alibaba.com>
Mon, 3 Jun 2024 03:00:18 +0000 (11:00 +0800)
committerDavid S. Miller <davem@davemloft.net>
Mon, 3 Jun 2024 11:12:41 +0000 (12:12 +0100)
commit3ac14b9dfbd345e891d48d89f6c2fa519848f0f4
treed862691b5997c789f69021aeb3fb0db0b30d43ac
parentb5c089880723b2c18531c40e445235bd646a51d1
net/smc: set rmb's SG_MAX_SINGLE_ALLOC limitation only when CONFIG_ARCH_NO_SG_CHAIN is defined

SG_MAX_SINGLE_ALLOC is used to limit maximum number of entries that
will be allocated in one piece of scatterlist. When the entries of
scatterlist exceeds SG_MAX_SINGLE_ALLOC, sg chain will be used. From
commit 7c703e54cc71 ("arch: switch the default on ARCH_HAS_SG_CHAIN"),
we can know that the macro CONFIG_ARCH_NO_SG_CHAIN is used to identify
whether sg chain is supported. So, SMC-R's rmb buffer should be limited
by SG_MAX_SINGLE_ALLOC only when the macro CONFIG_ARCH_NO_SG_CHAIN is
defined.

Fixes: a3fe3d01bd0d ("net/smc: introduce sg-logic for RMBs")
Signed-off-by: Guangguan Wang <guangguan.wang@linux.alibaba.com>
Co-developed-by: Wen Gu <guwen@linux.alibaba.com>
Signed-off-by: Wen Gu <guwen@linux.alibaba.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
net/smc/smc_core.c