CVS: cvs.openbsd.org: src

CVSROOT:	/cvs
Module name:	src
Changes by:	[email protected]	2026/07/12 09:49:45

Modified files:
	sys/kern       : kern_sysctl.c sysv_msg.c sysv_sem.c sysv_shm.c 
	sys/sys        : sem.h shm.h 

Log message:
Move SysV sysctl(2) handlers out of sysctl_vslock(). They don't need to
wire userland pages, but have sleeping malloc() calls which could block
the locked sysctl(2) paths. Introduce rwlocks to serialize access to
`seminfo' and `shminfo' respectively. The whole SysV IPC layer relies on
kernel lock, but sysctl_sysvsem() and sysctl_sysvshm() paths have
context switch requires the extra serialization.

Joint work with and OK from kirill.