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md: split out md_rdev_init 

This functionality will be needed separately in a subsequent patch, so
split it into it's own exported function.

Signed-off-by: NeilBrown <neilb@suse.de>
This commit is contained in:
NeilBrown 2010-06-01 19:37:26 +10:00
parent 676e42d896
commit e8bb9a839a
2 changed files with 20 additions and 15 deletions
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34
drivers/md/md.c
View File

@ -2691,6 +2691,24 @@ static struct kobj_type rdev_ktype = {
.default_attrs = rdev_default_attrs,
};
void md_rdev_init(mdk_rdev_t *rdev)
{
rdev->desc_nr = -1;
rdev->saved_raid_disk = -1;
rdev->raid_disk = -1;
rdev->flags = 0;
rdev->data_offset = 0;
rdev->sb_events = 0;
rdev->last_read_error.tv_sec = 0;
rdev->last_read_error.tv_nsec = 0;
atomic_set(&rdev->nr_pending, 0);
atomic_set(&rdev->read_errors, 0);
atomic_set(&rdev->corrected_errors, 0);
INIT_LIST_HEAD(&rdev->same_set);
init_waitqueue_head(&rdev->blocked_wait);
}
EXPORT_SYMBOL_GPL(md_rdev_init);
/*
* Import a device. If 'super_format' >= 0, then sanity check the superblock
*
@ -2714,6 +2732,7 @@ static mdk_rdev_t *md_import_device(dev_t newdev, int super_format, int super_mi
return ERR_PTR(-ENOMEM);
}
md_rdev_init(rdev);
if ((err = alloc_disk_sb(rdev)))
goto abort_free;
@ -2723,18 +2742,6 @@ static mdk_rdev_t *md_import_device(dev_t newdev, int super_format, int super_mi
kobject_init(&rdev->kobj, &rdev_ktype);
rdev->desc_nr = -1;
rdev->saved_raid_disk = -1;
rdev->raid_disk = -1;
rdev->flags = 0;
rdev->data_offset = 0;
rdev->sb_events = 0;
rdev->last_read_error.tv_sec = 0;
rdev->last_read_error.tv_nsec = 0;
atomic_set(&rdev->nr_pending, 0);
atomic_set(&rdev->read_errors, 0);
atomic_set(&rdev->corrected_errors, 0);
size = rdev->bdev->bd_inode->i_size >> BLOCK_SIZE_BITS;
if (!size) {
printk(KERN_WARNING
@ -2763,9 +2770,6 @@ static mdk_rdev_t *md_import_device(dev_t newdev, int super_format, int super_mi
}
}
INIT_LIST_HEAD(&rdev->same_set);
init_waitqueue_head(&rdev->blocked_wait);
return rdev;
abort_free:

1
drivers/md/md.h
View File

@ -487,4 +487,5 @@ extern void md_integrity_add_rdev(mdk_rdev_t *rdev, mddev_t *mddev);
extern int strict_strtoul_scaled(const char *cp, unsigned long *res, int scale);
extern void restore_bitmap_write_access(struct file *file);
extern void md_rdev_init(mdk_rdev_t *rdev);
#endif /* _MD_MD_H */