diff options
author | Yoshinori K. Okuji <okuji@gnu.org> | 2000-09-24 07:51:12 +0000 |
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committer | Yoshinori K. Okuji <okuji@gnu.org> | 2000-09-24 07:51:12 +0000 |
commit | f0cc8c5b722a8c06737184fa98a7bfe88e143bf2 (patch) | |
tree | 39f7863cfcabb60f53093cb3d1d1906fcfc11670 /linux/dev/glue/block.c | |
parent | 856786d380a28a1f29ef97323ff363ccd626f376 (diff) |
2000-09-24 OKUJI Yoshinori <okuji@gnu.org>
* linux/dev/glue/block.c: Reverted the changes at 2000-08-17.
Reported by Brent Fulgham <brent.fulgham@xpsystems.com>.
Diffstat (limited to 'linux/dev/glue/block.c')
-rw-r--r-- | linux/dev/glue/block.c | 42 |
1 files changed, 14 insertions, 28 deletions
diff --git a/linux/dev/glue/block.c b/linux/dev/glue/block.c index 12bcfca..c450ea4 100644 --- a/linux/dev/glue/block.c +++ b/linux/dev/glue/block.c @@ -531,9 +531,7 @@ rdwr_partial (int rw, kdev_t dev, loff_t *off, for (gd = gendisk_head, nsect = -1; gd; gd = gd->next) if (gd->major == MAJOR (dev)) { - unsigned mask = (1 << gd->minor_shift) - 1; - - nsect = gd->part[MINOR (dev) & mask].nr_sects; + nsect = gd->part[MINOR (dev)].nr_sects; break; } if (nsect > 0) @@ -937,14 +935,12 @@ init_partition (struct name_map *np, kdev_t *dev, struct gendisk *gd = ds->gd; struct partition *p; struct temp_data *d = current_thread ()->pcb->data; - unsigned mask; - + if (! gd) { *part = -1; return 0; } - mask = (1 << gd->minor_shift) - 1; if (ds->labels) goto check; ds->labels = (struct disklabel **) kalloc (sizeof (struct disklabel *) @@ -955,12 +951,9 @@ init_partition (struct name_map *np, kdev_t *dev, sizeof (struct disklabel *) * gd->max_nr * gd->max_p); for (i = 1; i < gd->max_p; i++) { - unsigned part; - d->inode.i_rdev = *dev | i; - part = MINOR (d->inode.i_rdev) & mask; - if (gd->part[part].nr_sects <= 0 - || gd->part[part].start_sect < 0) + if (gd->part[MINOR (d->inode.i_rdev)].nr_sects <= 0 + || gd->part[MINOR (d->inode.i_rdev)].start_sect < 0) continue; linux_intr_pri = SPL5; d->file.f_flags = 0; @@ -982,11 +975,11 @@ init_partition (struct name_map *np, kdev_t *dev, continue; /* Sanity check. */ - if (p->p_size > gd->part[part].nr_sects) - p->p_size = gd->part[part].nr_sects; + if (p->p_size > gd->part[MINOR (d->inode.i_rdev)].nr_sects) + p->p_size = gd->part[MINOR (d->inode.i_rdev)].nr_sects; } } - ds->labels[part] = lp; + ds->labels[MINOR (d->inode.i_rdev)] = lp; } check: @@ -996,8 +989,8 @@ check: return D_NO_SUCH_DEVICE; *dev = MKDEV (MAJOR (*dev), MINOR (*dev) | slice); if (slice >= gd->max_p - || gd->part[MINOR (*dev) & mask].start_sect < 0 - || gd->part[MINOR (*dev) & mask].nr_sects <= 0) + || gd->part[MINOR (*dev)].start_sect < 0 + || gd->part[MINOR (*dev)].nr_sects <= 0) return D_NO_SUCH_DEVICE; if (*part >= 0) { @@ -1271,8 +1264,7 @@ check_limit (struct block_data *bd, loff_t *off, long bn, int count) int major, minor; long maxsz, sz; struct disklabel *lp = NULL; - unsigned mask; - + if (count <= 0) return count; @@ -1281,8 +1273,6 @@ check_limit (struct block_data *bd, loff_t *off, long bn, int count) if (bd->ds->gd) { - mask = (1 << bd->ds->gd->minor_shift) - 1; - if (bd->part >= 0) { assert (bd->ds->labels); @@ -1291,7 +1281,7 @@ check_limit (struct block_data *bd, loff_t *off, long bn, int count) maxsz = lp->d_partitions[bd->part].p_size; } else - maxsz = bd->ds->gd->part[minor & mask].nr_sects; + maxsz = bd->ds->gd->part[minor].nr_sects; } else { @@ -1306,7 +1296,7 @@ check_limit (struct block_data *bd, loff_t *off, long bn, int count) count = sz << 9; if (lp) bn += (lp->d_partitions[bd->part].p_offset - - bd->ds->gd->part[minor & mask].start_sect); + - bd->ds->gd->part[minor].start_sect); *off = (loff_t) bn << 9; bd->iocount++; return count; @@ -1620,12 +1610,8 @@ device_get_status (void *d, dev_flavor_t flavor, dev_status_t status, = lp->d_partitions[bd->part].p_size << 9); } else - { - unsigned mask = (1 << bd->ds->gd->minor_shift) - 1; - - (status[DEV_GET_SIZE_DEVICE_SIZE] - = bd->ds->gd->part[MINOR (bd->dev) & mask].nr_sects << 9); - } + (status[DEV_GET_SIZE_DEVICE_SIZE] + = bd->ds->gd->part[MINOR (bd->dev)].nr_sects << 9); } else { |