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

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
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
drivers/md/md.c
View File

@ -2689,7 +2689,7 @@ slot_store(struct md_rdev *rdev, const char *buf, size_t len)
if (rdev->mddev->pers->hot_remove_disk == NULL)
return -EINVAL;
err = rdev->mddev->pers->
hot_remove_disk(rdev->mddev, rdev->raid_disk);
hot_remove_disk(rdev->mddev, rdev);
if (err)
return err;
sysfs_unlink_rdev(rdev->mddev, rdev);
@ -7340,7 +7340,7 @@ static int remove_and_add_spares(struct mddev *mddev)
! test_bit(In_sync, &rdev->flags)) &&
atomic_read(&rdev->nr_pending)==0) {
if (mddev->pers->hot_remove_disk(
mddev, rdev->raid_disk)==0) {
mddev, rdev) == 0) {
sysfs_unlink_rdev(mddev, rdev);
rdev->raid_disk = -1;
}
@ -7477,7 +7477,7 @@ void md_check_recovery(struct mddev *mddev)
test_bit(Faulty, &rdev->flags) &&
atomic_read(&rdev->nr_pending)==0) {
if (mddev->pers->hot_remove_disk(
mddev, rdev->raid_disk)==0) {
mddev, rdev) == 0) {
sysfs_unlink_rdev(mddev, rdev);
rdev->raid_disk = -1;
}

2
drivers/md/md.h
View File

@ -428,7 +428,7 @@ struct md_personality
*/
void (*error_handler)(struct mddev *mddev, struct md_rdev *rdev);
int (*hot_add_disk) (struct mddev *mddev, struct md_rdev *rdev);
int (*hot_remove_disk) (struct mddev *mddev, int number);
int (*hot_remove_disk) (struct mddev *mddev, struct md_rdev *rdev);
int (*spare_active) (struct mddev *mddev);
sector_t (*sync_request)(struct mddev *mddev, sector_t sector_nr, int *skipped, int go_faster);
int (*resize) (struct mddev *mddev, sector_t sectors);

7
drivers/md/multipath.c
View File

@ -292,17 +292,16 @@ static int multipath_add_disk(struct mddev *mddev, struct md_rdev *rdev)
return err;
}
static int multipath_remove_disk(struct mddev *mddev, int number)
static int multipath_remove_disk(struct mddev *mddev, struct md_rdev *rdev)
{
struct mpconf *conf = mddev->private;
int err = 0;
struct md_rdev *rdev;
int number = rdev->raid_disk;
struct multipath_info *p = conf->multipaths + number;
print_multipath_conf(conf);
rdev = p->rdev;
if (rdev) {
if (rdev == p->rdev) {
if (test_bit(In_sync, &rdev->flags) ||
atomic_read(&rdev->nr_pending)) {
printk(KERN_ERR "hot-remove-disk, slot %d is identified"

7
drivers/md/raid1.c
View File

@ -1327,16 +1327,15 @@ static int raid1_add_disk(struct mddev *mddev, struct md_rdev *rdev)
return err;
}
static int raid1_remove_disk(struct mddev *mddev, int number)
static int raid1_remove_disk(struct mddev *mddev, struct md_rdev *rdev)
{
struct r1conf *conf = mddev->private;
int err = 0;
struct md_rdev *rdev;
int number = rdev->raid_disk;
struct mirror_info *p = conf->mirrors+ number;
print_conf(conf);
rdev = p->rdev;
if (rdev) {
if (rdev == p->rdev) {
if (test_bit(In_sync, &rdev->flags) ||
atomic_read(&rdev->nr_pending)) {
err = -EBUSY;

7
drivers/md/raid10.c
View File

@ -1385,16 +1385,15 @@ static int raid10_add_disk(struct mddev *mddev, struct md_rdev *rdev)
return err;
}
static int raid10_remove_disk(struct mddev *mddev, int number)
static int raid10_remove_disk(struct mddev *mddev, struct md_rdev *rdev)
{
struct r10conf *conf = mddev->private;
int err = 0;
struct md_rdev *rdev;
int number = rdev->raid_disk;
struct mirror_info *p = conf->mirrors+ number;
print_conf(conf);
rdev = p->rdev;
if (rdev) {
if (rdev == p->rdev) {
if (test_bit(In_sync, &rdev->flags) ||
atomic_read(&rdev->nr_pending)) {
err = -EBUSY;

10
drivers/md/raid5.c
View File

@ -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;
}