From 6096d91af0b65a3967139b32d5adbb3647858a26 Mon Sep 17 00:00:00 2001 From: Joe Thornber Date: Wed, 17 Jun 2015 13:35:19 +0100 Subject: [PATCH] dm space map metadata: fix occasional leak of a metadata block on resize The metadata space map has a simplified 'bootstrap' mode that is operational when extending the space maps. Whilst in this mode it's possible for some refcount decrement operations to become queued (eg, as a result of shadowing one of the bitmap indexes). These decrements were not being applied when switching out of bootstrap mode. The effect of this bug was the leaking of a 4k metadata block. This is detected by the latest version of thin_check as a non fatal error. Signed-off-by: Joe Thornber Signed-off-by: Mike Snitzer Cc: stable@vger.kernel.org --- Reading git-format-patch failed