mirror/freebsd
1
0
Fork 0
mirror of https://git.FreeBSD.org/src.git synced 2024-12-18 10:35:55 +00:00
Code Issues Releases Activity

GC: bufqueues are not used under -current, we use bioqueues.

Browse Source
This commit is contained in:
Poul-Henning Kamp 2002-02-22 07:45:16 +00:00
parent e2c76cd6de
commit 4d768fea35
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=91058
1 changed files with 0 additions and 47 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

47
sys/sys/buf.h
View File

@ -385,53 +385,6 @@ struct cluster_save {
};
#ifdef _KERNEL
static __inline void bufq_init __P((struct buf_queue_head *head));
static __inline void bufq_insert_tail __P((struct buf_queue_head *head,
struct buf *bp));
static __inline void bufq_remove __P((struct buf_queue_head *head,
struct buf *bp));
static __inline struct buf *bufq_first __P((struct buf_queue_head *head));
static __inline void
bufq_init(struct buf_queue_head *head)
{
TAILQ_INIT(&head->queue);
head->last_pblkno = 0;
head->insert_point = NULL;
head->switch_point = NULL;
}
static __inline void
bufq_insert_tail(struct buf_queue_head *head, struct buf *bp)
{
if ((bp->b_ioflags & BIO_ORDERED) != 0) {
head->insert_point = bp;
head->switch_point = NULL;
}
TAILQ_INSERT_TAIL(&head->queue, bp, b_act);
}
static __inline void
bufq_remove(struct buf_queue_head *head, struct buf *bp)
{
if (bp == head->switch_point)
head->switch_point = TAILQ_NEXT(bp, b_act);
if (bp == head->insert_point) {
head->insert_point = TAILQ_PREV(bp, buf_queue, b_act);
if (head->insert_point == NULL)
head->last_pblkno = 0;
} else if (bp == TAILQ_FIRST(&head->queue))
head->last_pblkno = bp->b_pblkno;
TAILQ_REMOVE(&head->queue, bp, b_act);
if (TAILQ_FIRST(&head->queue) == head->switch_point)
head->switch_point = NULL;
}
static __inline struct buf *
bufq_first(struct buf_queue_head *head)
{
return (TAILQ_FIRST(&head->queue));
}
#define BUF_WRITE(bp) \
(bp)->b_op->bop_write(bp)