static int
ffs_rawread_sync(struct vnode *vp)
{
int error;
/*
* Check for dirty mmap, pending writes and dirty buffers
*/
lwkt_gettoken(&vp->v_token);
if (bio_track_active(&vp->v_track_write) ||
!RB_EMPTY(&vp->v_rbdirty_tree) ||
(vp->v_flag & VOBJDIRTY) != 0) {
/* Attempt to msync mmap() regions to clean dirty mmap */
if ((vp->v_flag & VOBJDIRTY) != 0) {
struct vm_object *obj;
if ((obj = vp->v_object) != NULL)
vm_object_page_clean(obj, 0, 0, OBJPC_SYNC);
}
/* Wait for pending writes to complete */
error = bio_track_wait(&vp->v_track_write, 0, 0);
if (error != 0) {
goto done;
}
/* Flush dirty buffers */
if (!RB_EMPTY(&vp->v_rbdirty_tree)) {
if ((error = VOP_FSYNC(vp, MNT_WAIT, 0)) != 0) {
goto done;
}
if (bio_track_active(&vp->v_track_write) ||
!RB_EMPTY(&vp->v_rbdirty_tree))
panic("ffs_rawread_sync: dirty bufs");
}
} else {
error = 0;
}
done:
lwkt_reltoken(&vp->v_token);
return error;
}
/*
* Pass 2 - only run after pass 1 has completed or has given up
*
* We ignore TMPFS, NFS, MFS, and SMBFS mounts in this pass.
*/
static int
shutdown_busycount2(struct buf *bp, void *info)
{
struct vnode *vp;
/*
* Ignore tmpfs and nfs mounts
*/
if ((vp = bp->b_vp) != NULL) {
if (vp->v_tag == VT_TMPFS)
return (0);
if (vp->v_tag == VT_NFS)
return (0);
if (vp->v_tag == VT_MFS)
return (0);
if (vp->v_tag == VT_SMBFS)
return (0);
}
/*
* Only count buffers stuck on I/O, ignore everything else
*/
if (((bp->b_flags & B_INVAL) == 0 && BUF_REFCNT(bp)) ||
((bp->b_flags & (B_DELWRI|B_INVAL)) == B_DELWRI)) {
/*
* Only count buffers undergoing write I/O
* on the related vnode.
*/
if (bp->b_vp == NULL ||
bio_track_active(&bp->b_vp->v_track_write) == 0) {
return (0);
}
#if defined(SHOW_BUSYBUFS) || defined(DIAGNOSTIC)
kprintf(
"%p dev:?, flags:%08x, loffset:%jd, doffset:%jd\n",
bp,
bp->b_flags, (intmax_t)bp->b_loffset,
(intmax_t)bp->b_bio2.bio_offset);
#endif
return(1);
}
return(0);
}
