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authorStephen M. Cameron <scameron@beardog.cce.hp.com>2009-09-17 22:48:31 +0400
committerJens Axboe <jens.axboe@oracle.com>2009-10-01 23:15:45 +0400
commit9cef0d2f4f68a5a2c6ea0495f958a074d21fbd07 (patch)
treeaee97fb9d8de37c0aee1fec563192e29a2425c70 /drivers/block/cciss.h
parente272afecaf18912e971374df4605496975942e5c (diff)
downloadlinux-9cef0d2f4f68a5a2c6ea0495f958a074d21fbd07.tar.xz
cciss: Dynamically allocate the drive_info_struct for each logical drive.
cciss: Dynamically allocate the drive_info_struct for each logical drive. This reduces the size of the per-hba ctlr_info structure from 106936 bytes to 8132 bytes. That's on 32-bit systems. On 64-bit systems, the improvement is even bigger. Without this, the ctlr_info struct is so big that the driver won't even load on a 64 bit system if CISS_MAX_LUN was at it's current setting of 1024 logical drives. Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Diffstat (limited to 'drivers/block/cciss.h')
-rw-r--r--drivers/block/cciss.h5
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/block/cciss.h b/drivers/block/cciss.h
index 5188f713d1b0..31524cf42c77 100644
--- a/drivers/block/cciss.h
+++ b/drivers/block/cciss.h
@@ -45,13 +45,14 @@ typedef struct _drive_info_struct
* to prevent it from being opened or it's
* queue from being started.
*/
- struct device *dev;
+ struct device dev;
__u8 serial_no[16]; /* from inquiry page 0x83,
* not necc. null terminated.
*/
char vendor[VENDOR_LEN + 1]; /* SCSI vendor string */
char model[MODEL_LEN + 1]; /* SCSI model string */
char rev[REV_LEN + 1]; /* SCSI revision string */
+ char device_initialized; /* indicates whether dev is initialized */
} drive_info_struct;
struct ctlr_info
@@ -87,7 +88,7 @@ struct ctlr_info
BYTE cciss_read_capacity;
// information about each logical volume
- drive_info_struct drv[CISS_MAX_LUN];
+ drive_info_struct *drv[CISS_MAX_LUN];
struct access_method access;