Clean up CSTYLEDs

69 CSTYLED BEGINs remain, appx. 30 of which can be removed if cstyle(1)
had a useful policy regarding
  CALL(ARG1,
  	ARG2,
  	ARG3);
above 2 lines. As it stands, it spits out *both*
  sysctl_os.c: 385: continuation line should be indented by 4 spaces
  sysctl_os.c: 385: indent by spaces instead of tabs
which is very cool

Another >10 could be fixed by removing "ulong" &al. handling.
I don't foresee anyone actually using it intentionally
(does it even exist in modern headers? why did it in the first place?).

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz>
Closes #12993

include/os/linux/spl/sys/rwlock.h

@@ -116,8 +116,7 @@ RW_READ_HELD(krwlock_t *rwp)
  * will be correctly located in the users code which is important
  * for the built in kernel lock analysis tools
  */
-/* BEGIN CSTYLED */
-#define	rw_init(rwp, name, type, arg)					\
+#define	rw_init(rwp, name, type, arg) /* CSTYLED */			\
 ({									\
 	static struct lock_class_key __key;				\
 	ASSERT(type == RW_DEFAULT || type == RW_NOLOCKDEP);		\
@@ -138,7 +137,7 @@ RW_READ_HELD(krwlock_t *rwp)
  */
 #define	rw_tryupgrade(rwp)	RW_WRITE_HELD(rwp)
 
-#define	rw_tryenter(rwp, rw)						\
+#define	rw_tryenter(rwp, rw) /* CSTYLED */				\
 ({									\
 	int _rc_ = 0;							\
 									\
@@ -158,7 +157,7 @@ RW_READ_HELD(krwlock_t *rwp)
 	_rc_;								\
 })
 
-#define	rw_enter(rwp, rw)						\
+#define	rw_enter(rwp, rw) /* CSTYLED */					\
 ({									\
 	spl_rw_lockdep_off_maybe(rwp);					\
 	switch (rw) {							\
@@ -175,7 +174,7 @@ RW_READ_HELD(krwlock_t *rwp)
 	spl_rw_lockdep_on_maybe(rwp);					\
 })
 
-#define	rw_exit(rwp)							\
+#define	rw_exit(rwp) /* CSTYLED */					\
 ({									\
 	spl_rw_lockdep_off_maybe(rwp);					\
 	if (RW_WRITE_HELD(rwp)) {					\
@@ -188,13 +187,12 @@ RW_READ_HELD(krwlock_t *rwp)
 	spl_rw_lockdep_on_maybe(rwp);					\
 })
 
-#define	rw_downgrade(rwp)						\
+#define	rw_downgrade(rwp) /* CSTYLED */					\
 ({									\
 	spl_rw_lockdep_off_maybe(rwp);					\
 	spl_rw_clear_owner(rwp);					\
 	downgrade_write(SEM(rwp));					\
 	spl_rw_lockdep_on_maybe(rwp);					\
 })
-/* END CSTYLED */
 
 #endif /* _SPL_RWLOCK_H */