diff options
Diffstat (limited to 'sys/kern/kern_lock.c')
| -rw-r--r-- | sys/kern/kern_lock.c | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/sys/kern/kern_lock.c b/sys/kern/kern_lock.c index 18bbf9a..c9829cd 100644 --- a/sys/kern/kern_lock.c +++ b/sys/kern/kern_lock.c @@ -396,6 +396,34 @@ lockinit(struct lock *lk, int pri, const char *wmesg, int timo, int flags) STACK_ZERO(lk); } +/* + * XXX: Gross hacks to manipulate external lock flags after + * initialization. Used for certain vnode and buf locks. + */ +void +lockallowshare(struct lock *lk) +{ + + lockmgr_assert(lk, KA_XLOCKED); + lk->lock_object.lo_flags &= ~LK_NOSHARE; +} + +void +lockallowrecurse(struct lock *lk) +{ + + lockmgr_assert(lk, KA_XLOCKED); + lk->lock_object.lo_flags |= LO_RECURSABLE; +} + +void +lockdisablerecurse(struct lock *lk) +{ + + lockmgr_assert(lk, KA_XLOCKED); + lk->lock_object.lo_flags &= ~LO_RECURSABLE; +} + void lockdestroy(struct lock *lk) { |
