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Clarify some comments.

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struct rqelement, enum rqinfo_type, struct rqinfo, union rqinfou: add
lock requests.

Add declarations for freerq and unlockrange.  Since they include
request structures, they can't go in vinumext.h
This commit is contained in:
grog 1999-08-14 06:21:45 +00:00
parent 72af637c3c
commit 0b7aec11d7
1 changed files with 14 additions and 3 deletions
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17
sys/dev/vinum/request.h
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@ -74,8 +74,7 @@ enum xferinfo {
* struct buf in order to be able to locate the
* high-level request when it completes.
*
* All offsets and lengths are in "blocks",
* i.e. sectors.
* All offsets and lengths are in sectors.
*/
struct rqelement {
@ -118,6 +117,7 @@ struct rqgroup {
int badsdno; /* index of bad subdisk or -1 */
enum xferinfo flags; /* description of transfer */
struct rqelement rqe[0]; /* and the elements of this request */
struct rangelock *lock; /* lock for this transfer */
};
/*
@ -175,12 +175,16 @@ enum rqinfo_type {
loginfo_rqe, /* user RQE */
loginfo_iodone, /* iodone */
loginfo_raid5_data, /* write RAID-5 data block */
loginfo_raid5_parity /* write RAID-5 parity block */
loginfo_raid5_parity, /* write RAID-5 parity block */
loginfo_lockwait, /* wait for range lock */
loginfo_lock, /* lock range */
loginfo_unlock, /* unlock range */
};
union rqinfou { /* info to pass to logrq */
struct buf *bp;
struct rqelement *rqe; /* address of request, for correlation */
struct rangelock *lockinfo;
};
struct rqinfo {
@ -192,6 +196,7 @@ struct rqinfo {
union {
struct buf b; /* yup, the *whole* buffer header */
struct rqelement rqe; /* and the whole rqe */
struct rangelock lockinfo;
} info;
};
@ -238,3 +243,9 @@ enum daemon_option {
daemon_stopped = 2,
daemon_noupdate = 4, /* don't update the disk config, for recovery */
};
void freerq(struct request *rq);
void unlockrange(struct rqgroup *rqg);
/* Local Variables: */
/* fill-column: 50 */
/* End: */