diff options
| author |   Christoph Hellwig <hch@lst.de> | 2009-03-31 14:27:03 +1100 |
|---|---|---|
| committer |   NeilBrown <neilb@suse.de> | 2009-03-31 14:27:03 +1100 |
| commit | ef740c372dfd80e706dbf955d4e4aedda6c0c148 (patch) | |
| tree | 8d9ef9db346ee1ba319a125c9de83cdde049510d /drivers/md/multipath.h | |
| parent | cleanup drivers/md/Makefile (diff) | |
| download | linux-dev-ef740c372dfd80e706dbf955d4e4aedda6c0c148.tar.xz linux-dev-ef740c372dfd80e706dbf955d4e4aedda6c0c148.zip | |
md: move headers out of include/linux/raid/
Move the headers with the local structures for the disciplines and
bitmap.h into drivers/md/ so that they are more easily grepable for
hacking and not far away. md.h is left where it is for now as there
are some uses from the outside.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: NeilBrown <neilb@suse.de>
Diffstat (limited to 'drivers/md/multipath.h')
| -rw-r--r-- | drivers/md/multipath.h | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/drivers/md/multipath.h b/drivers/md/multipath.h new file mode 100644 index 000000000000..6f53fc177a47 --- /dev/null +++ b/drivers/md/multipath.h @@ -0,0 +1,42 @@ +#ifndef _MULTIPATH_H +#define _MULTIPATH_H + +#include <linux/raid/md.h> + +struct multipath_info { + mdk_rdev_t *rdev; +}; + +struct multipath_private_data { + mddev_t *mddev; + struct multipath_info *multipaths; + int raid_disks; + int working_disks; + spinlock_t device_lock; + struct list_head retry_list; + + mempool_t *pool; +}; + +typedef struct multipath_private_data multipath_conf_t; + +/* + * this is the only point in the RAID code where we violate + * C type safety. mddev->private is an 'opaque' pointer. + */ +#define mddev_to_conf(mddev) ((multipath_conf_t *) mddev->private) + +/* + * this is our 'private' 'collective' MULTIPATH buffer head. + * it contains information about what kind of IO operations were started + * for this MULTIPATH operation, and about their status: + */ + +struct multipath_bh { + mddev_t *mddev; + struct bio *master_bio; + struct bio bio; + int path; + struct list_head retry_list; +}; +#endif |