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| author | D. Wythe <alibuda@linux.alibaba.com> | 2023-02-02 09:26:42 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2023-02-04 10:48:19 +0100 |
| commit | aff7bfed9097435ea38de919befbe2d7771a3e87 (patch) | |
| tree | c16906013868a13495e55a16f63946d7d4f5f4bc /net/ethtool | |
| parent | net/smc: reduce unnecessary blocking in smcr_lgr_reg_rmbs() (diff) | |
| download | linux-aff7bfed9097435ea38de919befbe2d7771a3e87.tar.xz linux-aff7bfed9097435ea38de919befbe2d7771a3e87.zip | |
net/smc: replace mutex rmbs_lock and sndbufs_lock with rw_semaphore
It's clear that rmbs_lock and sndbufs_lock are aims to protect the
rmbs list or the sndbufs list.
During connection establieshment, smc_buf_get_slot() will always
be invoked, and it only performs read semantics in rmbs list and
sndbufs list.
Based on the above considerations, we replace mutex with rw_semaphore.
Only smc_buf_get_slot() use down_read() to allow smc_buf_get_slot()
run concurrently, other part use down_write() to keep exclusive
semantics.
Signed-off-by: D. Wythe <alibuda@linux.alibaba.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ethtool')
0 files changed, 0 insertions, 0 deletions