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| author | Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> | 2009-06-07 13:52:52 +0200 |
|---|---|---|
| committer | Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> | 2009-06-07 13:52:52 +0200 |
| commit | db429e9ec0f9dee2d8e50c154f04f29f880fc9d6 (patch) | |
| tree | 363328c6aa85f7a15cc061f7c71f3cc3a8cde970 /include | |
| parent | 02c33b123e59cab5771e52a012aeb810500260a2 (diff) | |
| download | op-kernel-dev-db429e9ec0f9dee2d8e50c154f04f29f880fc9d6.zip op-kernel-dev-db429e9ec0f9dee2d8e50c154f04f29f880fc9d6.tar.gz | |
partitions: add ->set_capacity block device method
* Add ->set_capacity block device method and use it in rescan_partitions()
to attempt enabling native capacity of the device upon detecting the
partition which exceeds device capacity.
* Add GENHD_FL_NATIVE_CAPACITY flag to try limit attempts of enabling
native capacity during partition scan.
Together with the consecutive patch implementing ->set_capacity method in
ide-gd device driver this allows automatic disabling of Host Protected Area
(HPA) if any partitions overlapping HPA are detected.
Cc: Robert Hancock <hancockrwd@gmail.com>
Cc: Frans Pop <elendil@planet.nl>
Cc: "Andries E. Brouwer" <Andries.Brouwer@cwi.nl>
Acked-by: Al Viro <viro@zeniv.linux.org.uk>
Emphatically-Acked-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/blkdev.h | 2 | ||||
| -rw-r--r-- | include/linux/genhd.h | 1 |
2 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index 6f841fb..a2d7298 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -1106,6 +1106,8 @@ struct block_device_operations { int (*direct_access) (struct block_device *, sector_t, void **, unsigned long *); int (*media_changed) (struct gendisk *); + unsigned long long (*set_capacity) (struct gendisk *, + unsigned long long); int (*revalidate_disk) (struct gendisk *); int (*getgeo)(struct block_device *, struct hd_geometry *); struct module *owner; diff --git a/include/linux/genhd.h b/include/linux/genhd.h index 634c530..239e24b 100644 --- a/include/linux/genhd.h +++ b/include/linux/genhd.h @@ -113,6 +113,7 @@ struct hd_struct { #define GENHD_FL_UP 16 #define GENHD_FL_SUPPRESS_PARTITION_INFO 32 #define GENHD_FL_EXT_DEVT 64 /* allow extended devt */ +#define GENHD_FL_NATIVE_CAPACITY 128 #define BLK_SCSI_MAX_CMDS (256) #define BLK_SCSI_CMD_PER_LONG (BLK_SCSI_MAX_CMDS / (sizeof(long) * 8)) |
