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Replace usage of buf->b_actf by queue.3 and buf->b_act

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This commit is contained in:
Poul-Henning Kamp 1996-04-08 07:54:51 +00:00
parent c5c15c162f
commit b96b6bb1e6
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=15140
3 changed files with 21 additions and 19 deletions
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16
sys/ufs/mfs/mfs_vfsops.c
View File

@ -31,7 +31,7 @@
* SUCH DAMAGE.
*
* @(#)mfs_vfsops.c 8.4 (Berkeley) 4/16/94
* $Id: mfs_vfsops.c,v 1.19 1995/12/14 20:16:15 bde Exp $
* $Id: mfs_vfsops.c,v 1.20 1995/12/17 21:09:59 phk Exp $
*/
#include <sys/param.h>
@ -296,7 +296,8 @@ mfs_mount(mp, path, data, ndp, p)
mfsp->mfs_size = mfs_rootsize;
mfsp->mfs_vnode = rootvp;
mfsp->mfs_pid = p->p_pid;
mfsp->mfs_buflist = (struct buf *)0;
mfsp->mfs_active = 1;
TAILQ_INIT(&mfsp->buf_queue);
/*
* Attempt mount
@ -379,7 +380,8 @@ mfs_mount(mp, path, data, ndp, p)
mfsp->mfs_size = args.size;
mfsp->mfs_vnode = devvp;
mfsp->mfs_pid = p->p_pid;
mfsp->mfs_buflist = (struct buf *)0;
mfsp->mfs_active = 1;
TAILQ_INIT(&mfsp->buf_queue);
/*
* Since this is a new mount, we want the names for
@ -402,7 +404,7 @@ mfs_mount(mp, path, data, ndp, p)
bzero( mp->mnt_stat.f_mntfromname + size, MNAMELEN - size);
if (err = ffs_mountfs(devvp, mp, p)) {
mfsp->mfs_buflist = (struct buf *)-1;
mfsp->mfs_active = 0;
goto error_2;
}
@ -453,9 +455,9 @@ mfs_start(mp, flags, p)
register int gotsig = 0;
base = mfsp->mfs_baseoff;
while (mfsp->mfs_buflist != (struct buf *)(-1)) {
while (bp = mfsp->mfs_buflist) {
mfsp->mfs_buflist = bp->b_actf;
while (mfsp->mfs_active) {
while (bp = TAILQ_FIRST(&mfsp->buf_queue)) {
TAILQ_REMOVE(&mfsp->buf_queue, bp, b_act);
mfs_doio(bp, base);
wakeup((caddr_t)bp);
}

19
sys/ufs/mfs/mfs_vnops.c
View File

@ -31,7 +31,7 @@
* SUCH DAMAGE.
*
* @(#)mfs_vnops.c 8.3 (Berkeley) 9/21/93
* $Id: mfs_vnops.c,v 1.12 1995/11/09 08:14:29 bde Exp $
* $Id: mfs_vnops.c,v 1.13 1995/12/17 21:10:01 phk Exp $
*/
#include <sys/param.h>
@ -193,8 +193,7 @@ mfs_strategy(ap)
} else if (mfsp->mfs_pid == p->p_pid) {
mfs_doio(bp, mfsp->mfs_baseoff);
} else {
bp->b_actf = mfsp->mfs_buflist;
mfsp->mfs_buflist = bp;
TAILQ_INSERT_TAIL(&mfsp->buf_queue, bp, b_act);
wakeup((caddr_t)vp);
}
return (0);
@ -265,8 +264,8 @@ mfs_close(ap)
/*
* Finish any pending I/O requests.
*/
while (bp = mfsp->mfs_buflist) {
mfsp->mfs_buflist = bp->b_actf;
while (bp = TAILQ_FIRST(&mfsp->buf_queue)) {
TAILQ_REMOVE(&mfsp->buf_queue, bp, b_act)
mfs_doio(bp, mfsp->mfs_baseoff);
wakeup((caddr_t)bp);
}
@ -283,12 +282,12 @@ mfs_close(ap)
*/
if (vp->v_usecount > 1)
printf("mfs_close: ref count %d > 1\n", vp->v_usecount);
if (vp->v_usecount > 1 || mfsp->mfs_buflist)
if (vp->v_usecount > 1 || !TAILQ_EMPTY(&mfsp->buf_queue))
panic("mfs_close");
/*
* Send a request to the filesystem server to exit.
*/
mfsp->mfs_buflist = (struct buf *)(-1);
mfsp->mfs_active = 0;
wakeup((caddr_t)vp);
return (0);
}
@ -305,9 +304,9 @@ mfs_inactive(ap)
{
register struct mfsnode *mfsp = VTOMFS(ap->a_vp);
if (mfsp->mfs_buflist && mfsp->mfs_buflist != (struct buf *)(-1))
panic("mfs_inactive: not inactive (mfs_buflist %x)",
mfsp->mfs_buflist);
if (!TAILQ_EMPTY(&mfsp->buf_queue))
panic("mfs_inactive: not inactive (next buffer %p)",
TAILQ_FIRST(&mfsp->buf_queue));
return (0);
}

5
sys/ufs/mfs/mfsnode.h
View File

@ -31,7 +31,7 @@
* SUCH DAMAGE.
*
* @(#)mfsnode.h 8.2 (Berkeley) 8/11/93
* $Id: mfsnode.h,v 1.2 1994/08/02 07:54:46 davidg Exp $
* $Id: mfsnode.h,v 1.3 1994/08/21 07:16:12 paul Exp $
*/
#ifndef _UFS_MFS_MFSNODE_H_
@ -46,7 +46,8 @@ struct mfsnode {
caddr_t mfs_baseoff; /* base of file system in memory */
long mfs_size; /* size of memory file system */
pid_t mfs_pid; /* supporting process pid */
struct buf *mfs_buflist; /* list of I/O requests */
struct buf_queue_head buf_queue; /* list of I/O requests */
int mfs_active;
long mfs_spare[4];
};