diff options
Diffstat (limited to 'drivers/md/md.h')
| -rw-r--r-- | drivers/md/md.h | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/drivers/md/md.h b/drivers/md/md.h index d05bab55df4e..eec517ced31a 100644 --- a/drivers/md/md.h +++ b/drivers/md/md.h @@ -60,6 +60,12 @@ struct mdk_rdev_s mddev_t *mddev; /* RAID array if running */ int last_events; /* IO event timestamp */ + /* + * If meta_bdev is non-NULL, it means that a separate device is + * being used to store the metadata (superblock/bitmap) which + * would otherwise be contained on the same device as the data (bdev). + */ + struct block_device *meta_bdev; struct block_device *bdev; /* block device handle */ struct page *sb_page; @@ -148,7 +154,8 @@ struct mddev_s * are happening, so run/ * takeover/stop are not safe */ - + int ready; /* See when safe to pass + * IO requests down */ struct gendisk *gendisk; struct kobject kobj; @@ -497,8 +504,8 @@ extern void md_flush_request(mddev_t *mddev, struct bio *bio); extern void md_super_write(mddev_t *mddev, mdk_rdev_t *rdev, sector_t sector, int size, struct page *page); extern void md_super_wait(mddev_t *mddev); -extern int sync_page_io(mdk_rdev_t *rdev, sector_t sector, int size, - struct page *page, int rw); +extern int sync_page_io(mdk_rdev_t *rdev, sector_t sector, int size, + struct page *page, int rw, bool metadata_op); extern void md_do_sync(mddev_t *mddev); extern void md_new_event(mddev_t *mddev); extern int md_allow_write(mddev_t *mddev); |