From: Mike Snitzer <snitzer@redhat.com>
Date: Mon, 22 Jun 2009 09:12:33 +0000 (+0100)
Subject: dm log: fix create_log_context to use logical_block_size of log device
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=18d8594dd93a1ae2fafd591ec026e87d743292bf;p=GitHub%2Fexynos8895%2Fandroid_kernel_samsung_universal8895.git

dm log: fix create_log_context to use logical_block_size of log device

create_log_context() must use the logical_block_size from the log disk,
where the I/O happens, not the target's logical_block_size.

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

diff --git a/drivers/md/dm-log.c b/drivers/md/dm-log.c
index 6352a9ad4446..9443896ede07 100644
--- a/drivers/md/dm-log.c
+++ b/drivers/md/dm-log.c
@@ -412,9 +412,10 @@ static int create_log_context(struct dm_dirty_log *log, struct dm_target *ti,
 		/*
 		 * Buffer holds both header and bitset.
 		 */
-		buf_size = dm_round_up((LOG_OFFSET << SECTOR_SHIFT) +
-				       bitset_size,
-				       ti->limits.logical_block_size);
+		buf_size =
+		    dm_round_up((LOG_OFFSET << SECTOR_SHIFT) + bitset_size,
+				bdev_logical_block_size(lc->header_location.
+							    bdev));
 
 		if (buf_size > i_size_read(dev->bdev->bd_inode)) {
 			DMWARN("log device %s too small: need %llu bytes",