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md: change hot_remove_disk to take an rdev rather than a number.

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Soon an array will be able to have multiple devices with the
same raid_disk number (an original and a replacement).  So removing
a device based on the number won't work.  So pass the actual device
handle instead.

Reviewed-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: NeilBrown <neilb@suse.de>
This commit is contained in:
NeilBrown
2011-12-23 10:17:51 +11:00
parent 476a7abb9b
commit b8321b68d1
6 changed files with 18 additions and 21 deletions
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10
drivers/md/raid5.c
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@@ -5038,16 +5038,15 @@ static int raid5_spare_active(struct mddev *mddev)
return count;
}
static int raid5_remove_disk(struct mddev *mddev, int number)
static int raid5_remove_disk(struct mddev *mddev, struct md_rdev *rdev)
{
struct r5conf *conf = mddev->private;
int err = 0;
struct md_rdev *rdev;
int number = rdev->raid_disk;
struct disk_info *p = conf->disks + number;
print_raid5_conf(conf);
rdev = p->rdev;
if (rdev) {
if (rdev == p->rdev) {
if (number >= conf->raid_disks &&
conf->reshape_progress == MaxSector)
clear_bit(In_sync, &rdev->flags);
@@ -5369,7 +5368,8 @@ static void raid5_finish_reshape(struct mddev *mddev)
d < conf->raid_disks - mddev->delta_disks;
d++) {
struct md_rdev *rdev = conf->disks[d].rdev;
if (rdev && raid5_remove_disk(mddev, d) == 0) {
if (rdev &&
raid5_remove_disk(mddev, rdev) == 0) {
sysfs_unlink_rdev(mddev, rdev);
rdev->raid_disk = -1;
}