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Subject[PATCH 002 of 3] md: Assorted little md fixes:

- version-1 superblock
+ The default_bitmap_offset is in sectors, not bytes.
+ the 'size' field in the superblock is in sectors, not KB
- raid0_run should return a negative number on error, not '1'
- raid10_read_balance should not return a valid 'disk' number if
->rdev turned out to be NULL
- kmem_cache_destroy doesn't like being passed a NULL.


Signed-off-by: Neil Brown <neilb@suse.de>

### Diffstat output
./drivers/md/md.c | 4 ++--
./drivers/md/raid0.c | 2 +-
./drivers/md/raid10.c | 2 ++
./drivers/md/raid5.c | 3 ++-
./drivers/md/raid6main.c | 3 ++-
5 files changed, 9 insertions(+), 5 deletions(-)

diff ./drivers/md/md.c~current~ ./drivers/md/md.c
--- ./drivers/md/md.c~current~ 2006-02-02 16:48:47.000000000 +1100
+++ ./drivers/md/md.c 2006-02-02 16:51:46.000000000 +1100
@@ -1082,7 +1082,7 @@ static int super_1_validate(mddev_t *mdd
mddev->size = le64_to_cpu(sb->size)/2;
mddev->events = le64_to_cpu(sb->events);
mddev->bitmap_offset = 0;
- mddev->default_bitmap_offset = 1024;
+ mddev->default_bitmap_offset = 1024 >> 9;

mddev->recovery_cp = le64_to_cpu(sb->resync_offset);
memcpy(mddev->uuid, sb->set_uuid, 16);
@@ -1163,7 +1163,7 @@ static void super_1_sync(mddev_t *mddev,
sb->cnt_corrected_read = atomic_read(&rdev->corrected_errors);

sb->raid_disks = cpu_to_le32(mddev->raid_disks);
- sb->size = cpu_to_le64(mddev->size);
+ sb->size = cpu_to_le64(mddev->size<<1);

if (mddev->bitmap && mddev->bitmap_file == NULL) {
sb->bitmap_offset = cpu_to_le32((__u32)mddev->bitmap_offset);
diff ./drivers/md/raid0.c~current~ ./drivers/md/raid0.c
--- ./drivers/md/raid0.c~current~ 2006-02-02 16:48:19.000000000 +1100
+++ ./drivers/md/raid0.c 2006-02-02 16:51:53.000000000 +1100
@@ -372,7 +372,7 @@ out_free_conf:
kfree(conf);
mddev->private = NULL;
out:
- return 1;
+ return -ENOMEM;
}

static int raid0_stop (mddev_t *mddev)
diff ./drivers/md/raid10.c~current~ ./drivers/md/raid10.c
--- ./drivers/md/raid10.c~current~ 2006-02-02 16:48:19.000000000 +1100
+++ ./drivers/md/raid10.c 2006-02-02 16:51:53.000000000 +1100
@@ -565,6 +565,8 @@ rb_out:

if (disk >= 0 && (rdev=rcu_dereference(conf->mirrors[disk].rdev))!= NULL)
atomic_inc(&conf->mirrors[disk].rdev->nr_pending);
+ else
+ disk = -1;
rcu_read_unlock();

return disk;
diff ./drivers/md/raid5.c~current~ ./drivers/md/raid5.c
--- ./drivers/md/raid5.c~current~ 2006-02-02 16:48:19.000000000 +1100
+++ ./drivers/md/raid5.c 2006-02-02 16:51:53.000000000 +1100
@@ -350,7 +350,8 @@ static void shrink_stripes(raid5_conf_t
while (drop_one_stripe(conf))
;

- kmem_cache_destroy(conf->slab_cache);
+ if (conf->slab_cache)
+ kmem_cache_destroy(conf->slab_cache);
conf->slab_cache = NULL;
}

diff ./drivers/md/raid6main.c~current~ ./drivers/md/raid6main.c
--- ./drivers/md/raid6main.c~current~ 2006-02-02 16:48:19.000000000 +1100
+++ ./drivers/md/raid6main.c 2006-02-02 16:55:25.000000000 +1100
@@ -366,7 +366,8 @@ static void shrink_stripes(raid6_conf_t
while (drop_one_stripe(conf))
;

- kmem_cache_destroy(conf->slab_cache);
+ if (conf->slab_cache)
+ kmem_cache_destroy(conf->slab_cache);
conf->slab_cache = NULL;
}

-
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