From: John Anthony Kazos Jr. <[email protected]>
Add static inline function get_sect_count to include/linux/genhd.h to
complement get_start_sect. Returns sector_t capacity of block device
whether it is whole or a partition.
Signed-off-by: John Anthony Kazos Jr. <[email protected]>
---
This will be useful for fill_super functions of filesystems with online
resizing for checks against recorded and actual device size.
get_start_sect and get_sect_count are helper functions useful to keep
things from breaking in case the block_device structure decides to change.
Applied against Linux v2.6.20.6.
--- linux-2.6.20.6-orig/include/linux/genhd.h 2007-04-06 16:02:48.000000000 -0400
+++ linux-2.6.20.6-mod/include/linux/genhd.h 2007-04-07 11:58:55.000000000 -0400
@@ -244,6 +244,10 @@ static inline sector_t get_start_sect(st
{
return bdev->bd_contains == bdev ? 0 : bdev->bd_part->start_sect;
}
+static inline sector_t get_sect_count(struct block_device *bdev)
+{
+ return bdev->bd_contains == bdev ? bdev->bd_disk->capacity : bdev->bd_part->nr_sects;
+}
static inline sector_t get_capacity(struct gendisk *disk)
{
return disk->capacity;
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
[Index of Archives]
[Kernel Newbies]
[Netfilter]
[Bugtraq]
[Photo]
[Stuff]
[Gimp]
[Yosemite News]
[MIPS Linux]
[ARM Linux]
[Linux Security]
[Linux RAID]
[Video 4 Linux]
[Linux for the blind]
[Linux Resources]
