CVS commit: src/sys/kern

["Taylor R Campbell" <riastradh%netbsd.org@localhost>]

Module Name:    src
Committed By:   riastradh
Date:           Thu Feb 23 03:00:15 UTC 2023

Modified Files:
        src/sys/kern: kern_descrip.c

Log Message:
kern_descrip.c: Change membar_enter to membar_acquire in fd_getfile.

membar_acquire is cheaper on many CPUs, and unlikely to be costlier
on any CPUs, than the legacy membar_enter.

Add a long comment explaining the interaction between fd_getfile and
fd_close and why membar_acquire is safe.

XXX pullup-10


To generate a diff of this commit:
cvs rdiff -u -r1.253 -r1.254 src/sys/kern/kern_descrip.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.