commit f8ec4d29c88b01f50b7903f90db6135b8b5ff1c2
Author: Matthew Dillon <[email protected]>
Date: Sat Feb 15 11:44:57 2020 -0800
kernel - Micro-optimization, only set v_lastwrite_ts for regular files
* When mmap()ing a file SHARED/RW, only update v_lastwrite_ts
for regular files. This avoids an unnecessary exclusive lock
and related SMP contention on devices (such as /dev/lpmap).
Summary of changes:
sys/vm/vm_mmap.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
http://gitweb.dragonflybsd.org/dragonfly.git/commitdiff/f8ec4d29c88b01f50b7903f90db6135b8b5ff1c2
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DragonFly BSD source repository
