Handle writes to a snapshot-origin device that has been extended since
the snapshot was taken.
Signed-Off-By: Alasdair G Kergon <[EMAIL PROTECTED]>
--- diff/drivers/md/dm-snap.c 2005-07-08 19:01:41.000000000 +0100
+++ source/drivers/md/dm-snap.c 2005-07-08 19:41:00.000000000 +0100
@@ -931,6 +931,10 @@
if (!snap->valid)
continue;
+ /* Nothing to do if writing beyond end of snapshot */
+ if (bio->bi_sector >= dm_table_get_size(snap->table))
+ continue;
+
down_write(&snap->lock);
/*
--- diff/drivers/md/dm-table.c 2005-06-17 20:48:29.000000000 +0100
+++ source/drivers/md/dm-table.c 2005-07-08 19:41:00.000000000 +0100
@@ -943,6 +943,7 @@
EXPORT_SYMBOL(dm_get_device);
EXPORT_SYMBOL(dm_put_device);
EXPORT_SYMBOL(dm_table_event);
+EXPORT_SYMBOL(dm_table_get_size);
EXPORT_SYMBOL(dm_table_get_mode);
EXPORT_SYMBOL(dm_table_put);
EXPORT_SYMBOL(dm_table_get);
-
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