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-rw-r--r--sys/fs/nullfs/null_vfsops.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/sys/fs/nullfs/null_vfsops.c b/sys/fs/nullfs/null_vfsops.c
index 80824a5..64e1e29 100644
--- a/sys/fs/nullfs/null_vfsops.c
+++ b/sys/fs/nullfs/null_vfsops.c
@@ -198,6 +198,8 @@ nullfs_mount(struct mount *mp)
MNTK_EXTENDED_SHARED);
}
mp->mnt_kern_flag |= MNTK_LOOKUP_EXCL_DOTDOT;
+ mp->mnt_kern_flag |= lowerrootvp->v_mount->mnt_kern_flag &
+ MNTK_USES_BCACHE;
MNT_IUNLOCK(mp);
mp->mnt_data = xmp;
vfs_getnewfsid(mp);
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