diff options
| author | kato <kato@FreeBSD.org> | 1998-01-20 10:02:54 +0000 |
|---|---|---|
| committer | kato <kato@FreeBSD.org> | 1998-01-20 10:02:54 +0000 |
| commit | d49fde64e88ed0930d98ea5752325d23d452a74c (patch) | |
| tree | f94a3f25ebb61ec2c816446513a36a8e80e7c635 /sys/fs/unionfs/union.h | |
| parent | 1b94ff548145fb10224df86f77d684ccfa34e93a (diff) | |
| download | FreeBSD-src-d49fde64e88ed0930d98ea5752325d23d452a74c.zip FreeBSD-src-d49fde64e88ed0930d98ea5752325d23d452a74c.tar.gz | |
- Move SETKLOC and CLEARKLOCK macros into uion.h.
- Set UN_ULOCK in union_lock() when UN_KLOCK is set. Caller expects
that vnode is locked correctly, and may call another function which
expects locked vnode and may unlock the vnode.
- Do not assume the behavior of inside functions in FreeBSD's
vfs_suber.c is same as 4.4BSD-Lite2. Vnode may be locked in
vget() even though flag is zero. (Locked vnode is, of course,
unlocked before returning from vget.)
Diffstat (limited to 'sys/fs/unionfs/union.h')
| -rw-r--r-- | sys/fs/unionfs/union.h | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/sys/fs/unionfs/union.h b/sys/fs/unionfs/union.h index 03e7033..f3bbb89 100644 --- a/sys/fs/unionfs/union.h +++ b/sys/fs/unionfs/union.h @@ -35,7 +35,7 @@ * SUCH DAMAGE. * * @(#)union.h 8.9 (Berkeley) 12/10/94 - * $Id: union.h,v 1.8 1997/02/22 09:40:40 peter Exp $ + * $Id: union.h,v 1.9 1997/11/18 15:07:34 phk Exp $ */ struct union_args { @@ -94,6 +94,9 @@ struct union_node { #define UN_KLOCK 0x08 /* Keep upper node locked on vput */ #define UN_CACHED 0x10 /* In union cache */ +#define SETKLOCK(un) (un)->un_flags |= UN_KLOCK +#define CLEARKLOCK(un) (un)->un_flags &= ~UN_KLOCK + extern int union_allocvp __P((struct vnode **, struct mount *, struct vnode *, struct vnode *, struct componentname *, struct vnode *, |
