diff options
| -rw-r--r-- | sys/ufs/ffs/ffs_vfsops.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/sys/ufs/ffs/ffs_vfsops.c b/sys/ufs/ffs/ffs_vfsops.c index 04ae675..2a27502 100644 --- a/sys/ufs/ffs/ffs_vfsops.c +++ b/sys/ufs/ffs/ffs_vfsops.c @@ -1177,6 +1177,15 @@ ffs_vget(mp, ino, flags, vpp) return (error); /* + * We must promote to an exclusive lock for vnode creation. This + * can happen if lookup is passed LOCKSHARED. + */ + if ((flags & LK_TYPE_MASK) == LK_SHARED) { + flags &= ~LK_TYPE_MASK; + flags |= LK_EXCLUSIVE; + } + + /* * We do not lock vnode creation as it is believed to be too * expensive for such rare case as simultaneous creation of vnode * for same ino by different processes. We just allow them to race |
