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[PATCH] md: endian annotation for v1 superblock access

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Includes a couple of bugfixes found by sparse.

Signed-off-by: Neil Brown <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
NeilBrown 2006-10-21 10:24:08 -07:00 • committed by Linus Torvalds
commit 1c05b4bc22
2 changed files with 35 additions and 34 deletions
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13
drivers/md/md.c
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@ -974,12 +974,13 @@ static void super_90_sync(mddev_t *mddev, mdk_rdev_t *rdev)
* version 1 superblock
*/
static unsigned int calc_sb_1_csum(struct mdp_superblock_1 * sb)
static __le32 calc_sb_1_csum(struct mdp_superblock_1 * sb)
{
unsigned int disk_csum, csum;
__le32 disk_csum;
u32 csum;
unsigned long long newcsum;
int size = 256 + le32_to_cpu(sb->max_dev)*2;
unsigned int *isuper = (unsigned int*)sb;
__le32 *isuper = (__le32*)sb;
int i;
disk_csum = sb->sb_csum;
@ -989,7 +990,7 @@ static unsigned int calc_sb_1_csum(struct mdp_superblock_1 * sb)
newcsum += le32_to_cpu(*isuper++);
if (size == 2)
newcsum += le16_to_cpu(*(unsigned short*) isuper);
newcsum += le16_to_cpu(*(__le16*) isuper);
csum = (newcsum & 0xffffffff) + (newcsum >> 32);
sb->sb_csum = disk_csum;
@ -1106,7 +1107,7 @@ static int super_1_load(mdk_rdev_t *rdev, mdk_rdev_t *refdev, int minor_version)
if (le32_to_cpu(sb->chunksize))
rdev->size &= ~((sector_t)le32_to_cpu(sb->chunksize)/2 - 1);
if (le32_to_cpu(sb->size) > rdev->size*2)
if (le64_to_cpu(sb->size) > rdev->size*2)
return -EINVAL;
return ret;
}
@ -1228,7 +1229,7 @@ static void super_1_sync(mddev_t *mddev, mdk_rdev_t *rdev)
else
sb->resync_offset = cpu_to_le64(0);
sb->cnt_corrected_read = atomic_read(&rdev->corrected_errors);
sb->cnt_corrected_read = cpu_to_le32(atomic_read(&rdev->corrected_errors));
sb->raid_disks = cpu_to_le32(mddev->raid_disks);
sb->size = cpu_to_le64(mddev->size<<1);