diff options
Diffstat (limited to 'sys/kern/vfs_cluster.c')
| -rw-r--r-- | sys/kern/vfs_cluster.c | 18 |
1 files changed, 6 insertions, 12 deletions
diff --git a/sys/kern/vfs_cluster.c b/sys/kern/vfs_cluster.c index 220f760..7f477bf 100644 --- a/sys/kern/vfs_cluster.c +++ b/sys/kern/vfs_cluster.c @@ -33,7 +33,7 @@ * SUCH DAMAGE. * * @(#)vfs_cluster.c 8.7 (Berkeley) 2/13/94 - * $Id: vfs_cluster.c,v 1.54 1998/02/04 22:32:39 eivind Exp $ + * $Id: vfs_cluster.c,v 1.55 1998/02/06 12:13:30 eivind Exp $ */ #include "opt_debug_cluster.h" @@ -150,17 +150,12 @@ cluster_read(vp, filesize, lblkno, size, cred, totread, seqcount, bpp) (i == (maxra - 1))) tbp->b_flags |= B_RAM; -#if 0 - if (tbp->b_usecount == 0) { - /* - * Make sure that the soon-to-be used readaheads - * are still there. The getblk/bqrelse pair will - * boost the priority of the buffer. - */ - tbp = getblk(vp, lblkno+i, size, 0, 0); - bqrelse(tbp); + if ((tbp->b_usecount < 5) && + ((tbp->b_flags & B_BUSY) == 0) && + (tbp->b_qindex == QUEUE_LRU)) { + TAILQ_REMOVE(&bufqueues[QUEUE_LRU], tbp, b_freelist); + TAILQ_INSERT_TAIL(&bufqueues[QUEUE_LRU], tbp, b_freelist); } -#endif } splx(s); if (i >= maxra) { @@ -215,7 +210,6 @@ single_block_read: * if we have been doing sequential I/O, then do some read-ahead */ rbp = NULL; - /* if (seqcount && (lblkno < (origblkno + maxra))) { */ if (seqcount && (lblkno < (origblkno + seqcount))) { /* * we now build the read-ahead buffer if it is desirable. |
