[PATCH] dm: fix check_device_area compare

check_device_area was comparing the bytes with sectors. [Stefan Lauterbach]

[PATCH] dm: fix check_device_area compare
check_device_area was comparing the bytes with sectors. [Stefan Lauterbach]
f9114ec4 · Joe Thornber · Linus Torvalds · 2e8a5e48 · f9114ec4 · f9114ec4
Commit f9114ec4 authored Dec 15, 2002 by Joe Thornber Committed by Linus Torvalds Dec 15, 2002
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Showing with 3 additions and 2 deletions

drivers/md/dm-table.c drivers/md/dm-table.c +1 -1

drivers/md/dm.c drivers/md/dm.c +0 -1

drivers/md/dm.h drivers/md/dm.h +2 -0

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--- a/drivers/md/dm-table.c
+++ b/drivers/md/dm-table.c
@@ -388,7 +388,7 @@ static void close_dev(struct dm_dev *d)
 static int check_device_area(struct dm_dev *dd, sector_t start, sector_t len)
 {
 	sector_t dev_size;
-	dev_size = dd->bdev->bd_inode->i_size;
+	dev_size = dd->bdev->bd_inode->i_size >> SECTOR_SHIFT;
 	return ((start < dev_size) && (len <= (dev_size - start)));
 }


--- a/drivers/md/dm.c
+++ b/drivers/md/dm.c
@@ -16,7 +16,6 @@

 static const char *_name = DM_NAME;
 #define MAX_DEVICES (1 << KDEV_MINOR_BITS)
-#define SECTOR_SHIFT 9

 static int major = 0;
 static int _major = 0;

--- a/drivers/md/dm.h
+++ b/drivers/md/dm.h
@@ -29,6 +29,8 @@
 #define SECTOR_FORMAT "%lu"
 #endif

+#define SECTOR_SHIFT 9
+
 extern struct block_device_operations dm_blk_dops;

 /*