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-rw-r--r--drivers/md/faulty.c13
-rw-r--r--drivers/md/md.c23
-rw-r--r--drivers/md/md.h2
-rw-r--r--drivers/md/raid5.c42
4 files changed, 41 insertions, 39 deletions
diff --git a/drivers/md/faulty.c b/drivers/md/faulty.c
index 8695809b24b0..6513b7b3e379 100644
--- a/drivers/md/faulty.c
+++ b/drivers/md/faulty.c
@@ -255,14 +255,14 @@ static void status(struct seq_file *seq, mddev_t *mddev)
}
-static int reconfig(mddev_t *mddev, int layout, int chunk_size)
+static int reconfig(mddev_t *mddev)
{
- int mode = layout & ModeMask;
- int count = layout >> ModeShift;
+ int mode = mddev->new_layout & ModeMask;
+ int count = mddev->new_layout >> ModeShift;
conf_t *conf = mddev->private;
- if (chunk_size != -1)
- return -EINVAL;
+ if (mddev->new_layout < 0)
+ return 0;
/* new layout */
if (mode == ClearFaults)
@@ -279,6 +279,7 @@ static int reconfig(mddev_t *mddev, int layout, int chunk_size)
atomic_set(&conf->counters[mode], count);
} else
return -EINVAL;
+ mddev->new_layout = -1;
mddev->layout = -1; /* makes sure further changes come through */
return 0;
}
@@ -315,7 +316,7 @@ static int run(mddev_t *mddev)
md_set_array_sectors(mddev, faulty_size(mddev, 0, 0));
mddev->private = conf;
- reconfig(mddev, mddev->layout, -1);
+ reconfig(mddev);
return 0;
}
diff --git a/drivers/md/md.c b/drivers/md/md.c
index f996d8342a85..5caa421c2367 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -2809,9 +2809,12 @@ layout_store(mddev_t *mddev, const char *buf, size_t len)
int err;
if (mddev->pers->reconfig == NULL)
return -EBUSY;
- err = mddev->pers->reconfig(mddev, n, -1);
- if (err)
+ mddev->new_layout = n;
+ err = mddev->pers->reconfig(mddev);
+ if (err) {
+ mddev->new_layout = mddev->layout;
return err;
+ }
} else {
mddev->new_layout = n;
if (mddev->reshape_position == MaxSector)
@@ -2884,9 +2887,12 @@ chunk_size_store(mddev_t *mddev, const char *buf, size_t len)
int err;
if (mddev->pers->reconfig == NULL)
return -EBUSY;
- err = mddev->pers->reconfig(mddev, -1, n);
- if (err)
+ mddev->new_chunk_sectors = n >> 9;
+ err = mddev->pers->reconfig(mddev);
+ if (err) {
+ mddev->new_chunk_sectors = mddev->chunk_sectors;
return err;
+ }
} else {
mddev->new_chunk_sectors = n >> 9;
if (mddev->reshape_position == MaxSector)
@@ -5220,8 +5226,13 @@ static int update_array_info(mddev_t *mddev, mdu_array_info_t *info)
*/
if (mddev->pers->reconfig == NULL)
return -EINVAL;
- else
- return mddev->pers->reconfig(mddev, info->layout, -1);
+ else {
+ mddev->new_layout = info->layout;
+ rv = mddev->pers->reconfig(mddev);
+ if (rv)
+ mddev->new_layout = mddev->layout;
+ return rv;
+ }
}
if (info->size >= 0 && mddev->dev_sectors / 2 != info->size)
rv = update_size(mddev, (sector_t)info->size * 2);
diff --git a/drivers/md/md.h b/drivers/md/md.h
index e0a2b8e3985d..815013f8da6c 100644
--- a/drivers/md/md.h
+++ b/drivers/md/md.h
@@ -326,7 +326,7 @@ struct mdk_personality
int (*check_reshape) (mddev_t *mddev);
int (*start_reshape) (mddev_t *mddev);
void (*finish_reshape) (mddev_t *mddev);
- int (*reconfig) (mddev_t *mddev, int layout, int chunk_size);
+ int (*reconfig) (mddev_t *mddev);
/* quiesce moves between quiescence states
* 0 - fully active
* 1 - no new requests allowed
diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
index b84766e347c3..136051bc6725 100644
--- a/drivers/md/raid5.c
+++ b/drivers/md/raid5.c
@@ -5165,7 +5165,7 @@ static void *raid5_takeover_raid6(mddev_t *mddev)
}
-static int raid5_reconfig(mddev_t *mddev, int new_layout, int new_chunk)
+static int raid5_reconfig(mddev_t *mddev)
{
/* For a 2-drive array, the layout and chunk size can be changed
* immediately as not restriping is needed.
@@ -5173,15 +5173,16 @@ static int raid5_reconfig(mddev_t *mddev, int new_layout, int new_chunk)
* to be used by a reshape pass.
*/
raid5_conf_t *conf = mddev->private;
+ int new_chunk = mddev->new_chunk_sectors;
- if (new_layout >= 0 && !algorithm_valid_raid5(new_layout))
+ if (mddev->new_layout >= 0 && !algorithm_valid_raid5(mddev->new_layout))
return -EINVAL;
if (new_chunk > 0) {
if (!is_power_of_2(new_chunk))
return -EINVAL;
- if (new_chunk < PAGE_SIZE)
+ if (new_chunk < (PAGE_SIZE>>9))
return -EINVAL;
- if (mddev->array_sectors & ((new_chunk>>9)-1))
+ if (mddev->array_sectors & (new_chunk-1))
/* not factor of array size */
return -EINVAL;
}
@@ -5189,48 +5190,37 @@ static int raid5_reconfig(mddev_t *mddev, int new_layout, int new_chunk)
/* They look valid */
if (mddev->raid_disks == 2) {
-
- if (new_layout >= 0) {
- conf->algorithm = new_layout;
- mddev->layout = mddev->new_layout = new_layout;
+ /* can make the change immediately */
+ if (mddev->new_layout >= 0) {
+ conf->algorithm = mddev->new_layout;
+ mddev->layout = mddev->new_layout;
}
if (new_chunk > 0) {
- conf->chunk_sectors = new_chunk >> 9;
- mddev->new_chunk_sectors = new_chunk >> 9;
- mddev->chunk_sectors = new_chunk >> 9;
+ conf->chunk_sectors = new_chunk ;
+ mddev->chunk_sectors = new_chunk;
}
set_bit(MD_CHANGE_DEVS, &mddev->flags);
md_wakeup_thread(mddev->thread);
- } else {
- if (new_layout >= 0)
- mddev->new_layout = new_layout;
- if (new_chunk > 0)
- mddev->new_chunk_sectors = new_chunk >> 9;
}
return 0;
}
-static int raid6_reconfig(mddev_t *mddev, int new_layout, int new_chunk)
+static int raid6_reconfig(mddev_t *mddev)
{
- if (new_layout >= 0 && !algorithm_valid_raid6(new_layout))
+ int new_chunk = mddev->new_chunk_sectors;
+ if (mddev->new_layout >= 0 && !algorithm_valid_raid6(mddev->new_layout))
return -EINVAL;
if (new_chunk > 0) {
if (!is_power_of_2(new_chunk))
return -EINVAL;
- if (new_chunk < PAGE_SIZE)
+ if (new_chunk < (PAGE_SIZE >> 9))
return -EINVAL;
- if (mddev->array_sectors & ((new_chunk>>9)-1))
+ if (mddev->array_sectors & (new_chunk-1))
/* not factor of array size */
return -EINVAL;
}
/* They look valid */
-
- if (new_layout >= 0)
- mddev->new_layout = new_layout;
- if (new_chunk > 0)
- mddev->new_chunk_sectors = new_chunk >> 9;
-
return 0;
}
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