diff options
| -rw-r--r-- | sys/kern/vfs_bio.c | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/sys/kern/vfs_bio.c b/sys/kern/vfs_bio.c index 5a18252..50de22f 100644 --- a/sys/kern/vfs_bio.c +++ b/sys/kern/vfs_bio.c @@ -18,7 +18,7 @@ * 5. Modifications may be freely made to this file if the above conditions * are met. * - * $Id: vfs_bio.c,v 1.117 1997/05/30 22:25:35 dfr Exp $ + * $Id: vfs_bio.c,v 1.118 1997/06/03 09:42:43 dfr Exp $ */ /* @@ -515,6 +515,8 @@ brelse(struct buf * bp) * XXX this seems to cause performance problems. */ if ((bp->b_flags & B_VMIO) + && !(bp->b_vp->v_tag == VT_NFS && + (bp->b_flags & B_DELWRI) != 0) #ifdef notdef && (bp->b_vp->v_tag != VT_NFS || (bp->b_flags & (B_NOCACHE | B_INVAL | B_ERROR)) @@ -1498,8 +1500,14 @@ allocbuf(struct buf * bp, int size) bp->b_pages[pageindex] = m; curbpnpages = pageindex + 1; } - if (vp->v_tag == VT_NFS && bp->b_validend == 0) - bp->b_flags &= ~B_CACHE; + if (vp->v_tag == VT_NFS) { + if (bp->b_dirtyend > 0) { + bp->b_validoff = min(bp->b_validoff, bp->b_dirtyoff); + bp->b_validend = max(bp->b_validend, bp->b_dirtyend); + } + if (bp->b_validend == 0) + bp->b_flags &= ~B_CACHE; + } bp->b_data = (caddr_t) trunc_page(bp->b_data); bp->b_npages = curbpnpages; pmap_qenter((vm_offset_t) bp->b_data, |
