[PATCH 07/15] dm mirror log: bitset_size fix

[Alasdair G Kergon <agk@redhat.com>]

Fix the 'sizeof' in the region log bitmap size calculation: it's
uint32_t, not unsigned long - this breaks on some archs.

Signed-off-by: Alasdair G Kergon <agk@redhat.com>

Index: linux-2.6.17/drivers/md/dm-log.c
===================================================================
--- linux-2.6.17.orig/drivers/md/dm-log.c	2006-06-21 17:17:55.000000000 +0100
+++ linux-2.6.17/drivers/md/dm-log.c	2006-06-21 17:17:56.000000000 +0100
@@ -295,10 +295,10 @@ static int create_log_context(struct dir
 	 * Work out how many "unsigned long"s we need to hold the bitset.
 	 */
 	bitset_size = dm_round_up(region_count,
-				  sizeof(unsigned long) << BYTE_SHIFT);
+				  sizeof(*lc->clean_bits) << BYTE_SHIFT);
 	bitset_size >>= BYTE_SHIFT;
 
-	lc->bitset_uint32_count = bitset_size / 4;
+	lc->bitset_uint32_count = bitset_size / sizeof(*lc->clean_bits);
 
 	/*
 	 * Disk log?
-
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