diff options
Diffstat (limited to 'sys/sys/bio.h')
| -rw-r--r-- | sys/sys/bio.h | 22 |
1 files changed, 21 insertions, 1 deletions
diff --git a/sys/sys/bio.h b/sys/sys/bio.h index 47117ed..f274dd6 100644 --- a/sys/sys/bio.h +++ b/sys/sys/bio.h @@ -36,7 +36,7 @@ * SUCH DAMAGE. * * @(#)buf.h 8.9 (Berkeley) 3/30/95 - * $Id: buf.h,v 1.45 1998/01/22 17:30:10 dyson Exp $ + * $Id: buf.h,v 1.46 1998/03/07 21:36:20 dyson Exp $ */ #ifndef _SYS_BUF_H_ @@ -47,6 +47,24 @@ #define NOLIST ((struct buf *)0x87654321) struct buf; +struct mount; + +/* + * To avoid including <ufs/ffs/softdep.h> + */ +LIST_HEAD(workhead, worklist); +/* + * These are currently used only by the soft dependency code, hence + * are stored once in a global variable. If other subsystems wanted + * to use these hooks, a pointer to a set of bio_ops could be added + * to each buffer. + */ +extern struct bio_ops { + void (*io_start) __P((struct buf *)); + void (*io_complete) __P((struct buf *)); + void (*io_deallocate) __P((struct buf *)); + int (*io_sync) __P((struct mount *)); +} bioops; struct iodone_chain { long ic_prev_flags; @@ -104,6 +122,7 @@ struct buf { } b_cluster; struct vm_page *b_pages[btoc(MAXPHYS)]; int b_npages; + struct workhead b_dep; /* List of filesystem dependencies. */ }; /* @@ -264,6 +283,7 @@ int breadn __P((struct vnode *, daddr_t, int, daddr_t *, int *, int, int bwrite __P((struct buf *)); void bdwrite __P((struct buf *)); void bawrite __P((struct buf *)); +void bdirty __P((struct buf *)); int bowrite __P((struct buf *)); void brelse __P((struct buf *)); void bqrelse __P((struct buf *)); |
