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[PATCH] Two small fixes for md verion-1 superblocks.

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1/ Must typecast int to (sector_t) before inverting or we
 might not invert enough bits.

2/ When "bitmap_offset" was added to mdp_superblock_1, we didn't increase
   the count of words-used (96 to 100).

Signed-off-by: Neil Brown <neilb@cse.unsw.edu.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
NeilBrown 2005-06-21 17:17:28 -07:00 committed by Linus Torvalds
parent 7bfa19f274
commit 39730960d9
2 changed files with 2 additions and 2 deletions
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2
drivers/md/md.c
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@ -847,7 +847,7 @@ static int super_1_load(mdk_rdev_t *rdev, mdk_rdev_t *refdev, int minor_version)
case 0:
sb_offset = rdev->bdev->bd_inode->i_size >> 9;
sb_offset -= 8*2;
sb_offset &= ~(4*2-1);
sb_offset &= ~(sector_t)(4*2-1);
/* convert from sectors to K */
sb_offset /= 2;
break;

2
include/linux/raid/md_p.h
View file

@ -202,7 +202,7 @@ struct mdp_superblock_1 {
* NOTE: signed, so bitmap can be before superblock
* only meaningful of feature_map[0] is set.
*/
__u8 pad1[128-96]; /* set to 0 when written */
__u8 pad1[128-100]; /* set to 0 when written */
/* constant this-device information - 64 bytes */
__u64 data_offset; /* sector start of data, often 0 */