diff options
| author | attilio <attilio@FreeBSD.org> | 2008-02-24 16:38:58 +0000 |
|---|---|---|
| committer | attilio <attilio@FreeBSD.org> | 2008-02-24 16:38:58 +0000 |
| commit | 0d54671a48443b15ac601a80e192bc4c8faed7f9 (patch) | |
| tree | 997840c8acf28b15394b97f1d05d64f78bf81fd6 /sys/sys/vnode.h | |
| parent | 1c8346475e6e9a892928e5197425bb703eba2930 (diff) | |
| download | FreeBSD-src-0d54671a48443b15ac601a80e192bc4c8faed7f9.zip FreeBSD-src-0d54671a48443b15ac601a80e192bc4c8faed7f9.tar.gz | |
Introduce some functions in the vnode locks namespace and in the ffs
namespace in order to handle lockmgr fields in a controlled way instead
than spreading all around bogus stubs:
- VN_LOCK_AREC() allows lock recursion for a specified vnode
- VN_LOCK_ASHARE() allows lock sharing for a specified vnode
In FFS land:
- BUF_AREC() allows lock recursion for a specified buffer lock
- BUF_NOREC() disallows recursion for a specified buffer lock
Side note: union_subr.c::unionfs_node_update() is the only other function
directly handling lockmgr fields. As this is not simple to fix, it has
been left behind as "sole" exception.
Diffstat (limited to 'sys/sys/vnode.h')
| -rw-r--r-- | sys/sys/vnode.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/sys/sys/vnode.h b/sys/sys/vnode.h index abbc9e1..5c96a1c 100644 --- a/sys/sys/vnode.h +++ b/sys/sys/vnode.h @@ -400,6 +400,9 @@ extern void (*lease_updatetime)(int deltat); #define VI_UNLOCK(vp) mtx_unlock(&(vp)->v_interlock) #define VI_MTX(vp) (&(vp)->v_interlock) +#define VN_LOCK_AREC(vp) ((vp)->v_vnlock->lk_flags |= LK_CANRECURSE) +#define VN_LOCK_ASHARE(vp) ((vp)->v_vnlock->lk_flags &= ~LK_NOSHARE) + #endif /* _KERNEL */ /* |
