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Drop Giant when calling the disk drivers directly, and reacquire

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afterwards.  This fixes the Vinum breakage in -CURRENT.

Breakage explained by: phk
This commit is contained in:
Greg Lehey 2003-08-15 03:57:15 +00:00
parent b9c6d8cdcf
commit 5466a9cb4c
1 changed files with 13 additions and 4 deletions
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17
sys/dev/vinum/vinumio.c
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@ -65,8 +65,11 @@ open_drive(struct drive *drive, struct thread *td, int verbose)
drive->lasterror = ENOENT;
else if ((dsw->d_flags & D_DISK) == 0)
drive->lasterror = ENOTBLK;
else
else {
DROP_GIANT();
drive->lasterror = (dsw->d_open) (drive->dev, FWRITE | FREAD, 0, NULL);
PICKUP_GIANT();
}
if (drive->lasterror != 0) { /* failed */
drive->state = drive_down; /* just force it down */
@ -139,6 +142,7 @@ init_drive(struct drive *drive, int verbose)
if (drive->lasterror)
return drive->lasterror;
DROP_GIANT();
drive->lasterror = (*devsw(drive->dev)->d_ioctl) (drive->dev,
DIOCGSECTORSIZE,
(caddr_t) & drive->sectorsize,
@ -150,6 +154,7 @@ init_drive(struct drive *drive, int verbose)
(caddr_t) & drive->mediasize,
FREAD,
curthread);
PICKUP_GIANT();
if (drive->lasterror) {
if (verbose)
log(LOG_ERR,
@ -188,7 +193,9 @@ close_locked_drive(struct drive *drive)
* the queues, which spec_close() will try to
* do. Get rid of them here first.
*/
DROP_GIANT();
error = (*devsw(drive->dev)->d_close) (drive->dev, FWRITE | FREAD, 0, NULL);
PICKUP_GIANT();
drive->flags &= ~VF_OPEN; /* no longer open */
if (drive->lasterror == 0)
drive->lasterror = error;
@ -678,7 +685,7 @@ get_volume_label(char *name, int plexes, u_int64_t size, struct disklabel *lp)
}
/*
* Seach disks on system for vinum slices and add
* Search disks on system for vinum slices and add
* them to the configuuration if they're not
* there already. devicename is a blank-separate
* list of device names. If not provided, use
@ -775,6 +782,7 @@ vinum_scandisk(char *devicename)
np += ep - cp; /* and point past */
partnamelen = MAXPATHLEN + np - partname; /* remaining length in partition name */
#ifdef __i386__
/* first try the partition table */
for (slice = 1; slice < 5; slice++)
for (part = 'a'; part < 'i'; part++) {
@ -800,9 +808,10 @@ vinum_scandisk(char *devicename)
}
}
}
#endif
/*
* This is a kludge. Probably none of this
* should be here.
* If the machine doesn't have a BIOS
* partition table, try normal devices.
*/
if (gooddrives == 0) { /* didn't find anything, */
for (part = 'a'; part < 'i'; part++) /* try the compatibility partition */