Date: Sun, 29 Dec 2019 00:30:08 +0000 From: Rick Macklem <rmacklem@uoguelph.ca> To: "freebsd-current@freebsd.org" <freebsd-current@freebsd.org> Subject: getting rid of sys/nfs/nfs_lock.c Message-ID: <YQBPR0101MB1427110476BAFA3C88E21564DD240@YQBPR0101MB1427.CANPRD01.PROD.OUTLOOK.COM>
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Hi,
sys/nfs/nfs_lock.c uses Giant. Since it has not been used by default since
March 2008, I suspect it can be removed from head without any impact.
Post March 2008, the only way this code could be executed is by both
building a kernel without "options NFSLOCKD" and deleting nfslockd.ko
from the kernel boot directory and then running rpc.lockd on the system.
I doubt anyone has been doing both of the above, but if you think it is
still useful, please speak up. (I have an untested patch that replaces Giant
with a regular mutex. I realized this code is not used when I trying to test it.;-)
Also, if it seems appropriate, I could commit a patch that makes it print out
"deprecated and going away before FreeBSD 13" message, but I doubt anyone
will ever see it.
Should I do such a message and wait a few months for the deletion?
Thanks for your comments, rick
ps: The current patch that prepares the kernel for deletion of sys/nfs/nfs_lock.c
is in reviews.freebsd.org/D22933.
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