Remove the PL_SHAREMOD flag from struct plimit, which could have been

used to share resource limits between rfork threads, but never was.
Removing it makes resource limit locking much simpler -- only the current
process can change the contents of the structure that p_limit points to.

1 files changed, 1 insertions, 6 deletions

diff --git a/sys/sys/resourcevar.h b/sys/sys/resourcevar.h
index 572b575..40db407 100644
--- a/sys/sys/resourcevar.h
+++ b/sys/sys/resourcevar.h
@@ -72,15 +72,10 @@ struct pstats {
 /*
  * Kernel shareable process resource limits.  Because this structure
  * is moderately large but changes infrequently, it is normally
- * shared copy-on-write after forks.  If a group of processes
- * ("threads") share modifications, the PL_SHAREMOD flag is set,
- * and a copy must be made for the child of a new fork that isn't
- * sharing modifications to the limits.
+ * shared copy-on-write after forks.
  */
 struct plimit {
 	struct	rlimit pl_rlimit[RLIM_NLIMITS];
-#define	PL_SHAREMOD	0x01		/* modifications are shared */
-	int	p_lflags;
 	int	p_refcnt;		/* number of references */
 };