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authorNeilBrown2011-12-23 10:17:51 +1100
committerNeilBrown2011-12-23 10:17:51 +1100
commitb8321b68d1445f308324517e45fb0a5c2b48e271 (patch)
tree3fc4c9b253435753d2154d9bd697a7869163c29a /drivers/md
parent476a7abb9b00adfe6bf70e82800367319ab8078b (diff)
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>
Diffstat (limited to 'drivers/md')
-rw-r--r--drivers/md/md.c6
-rw-r--r--drivers/md/md.h2
-rw-r--r--drivers/md/multipath.c7
-rw-r--r--drivers/md/raid1.c7
-rw-r--r--drivers/md/raid10.c7
-rw-r--r--drivers/md/raid5.c10
6 files changed, 18 insertions, 21 deletions
diff --git a/drivers/md/md.c b/drivers/md/md.c
index d51c688d9c94..0e2288824938 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -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;
}
diff --git a/drivers/md/md.h b/drivers/md/md.h
index cf742d9306ec..670c10e6b484 100644
--- a/drivers/md/md.h
+++ b/drivers/md/md.h
@@ -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);
diff --git a/drivers/md/multipath.c b/drivers/md/multipath.c
index 5899246fa37e..a222f516660e 100644
--- a/drivers/md/multipath.c
+++ b/drivers/md/multipath.c
@@ -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"
diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c
index ede2461e79c5..4317f8de143a 100644
--- a/drivers/md/raid1.c
+++ b/drivers/md/raid1.c
@@ -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;
diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c
index 685ddf325ee4..f5088dda4dca 100644
--- a/drivers/md/raid10.c
+++ b/drivers/md/raid10.c
@@ -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;
diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
index a68c49250ed5..6b9fc58e8f2d 100644
--- a/drivers/md/raid5.c
+++ b/drivers/md/raid5.c
@@ -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;
}