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-rw-r--r--drivers/md/md.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/md/md.h b/drivers/md/md.h
index 360937389e6..7b4a3c318ca 100644
--- a/drivers/md/md.h
+++ b/drivers/md/md.h
@@ -393,10 +393,13 @@ struct mddev {
* For external metadata, offset
* from start of device.
*/
+ unsigned long space; /* space available at this offset */
loff_t default_offset; /* this is the offset to use when
* hot-adding a bitmap. It should
* eventually be settable by sysfs.
*/
+ unsigned long default_space; /* space available at
+ * default offset */
struct mutex mutex;
unsigned long chunksize;
unsigned long daemon_sleep; /* how many jiffies between updates? */