> Which reference implementation would that be? vop_stdgetpages() kern/vfs_default.c utilizing vnode_pager_generic_getpages() in sys/vm/vnode_pager.c We have four filesystems that implement their own vop_getpages and all use the queue locking: sys/fs/nfsclient/nfs_clbio.c sys/fs/nwfs/nwfs_io.c sys/fs/tmpfs/tmpfs_vnops.c sys/fs/smbfs/smbfs_io.c