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| author | Joe Thornber | 2015-06-17 14:35:19 +0200 |
|---|---|---|
| committer | Mike Snitzer | 2015-06-17 16:09:23 +0200 |
| commit | 6096d91af0b65a3967139b32d5adbb3647858a26 (patch) | |
| tree | 1c78bce04092967acee14e57887ab64c48d865a7 /drivers/md/dm-cache-policy-smq.c | |
| parent | dm thin metadata: fix a race when entering fail mode (diff) | |
| download | kernel-qcow2-linux-6096d91af0b65a3967139b32d5adbb3647858a26.tar.gz kernel-qcow2-linux-6096d91af0b65a3967139b32d5adbb3647858a26.tar.xz kernel-qcow2-linux-6096d91af0b65a3967139b32d5adbb3647858a26.zip | |
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 <ejt@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Cc: stable@vger.kernel.org
Diffstat (limited to 'drivers/md/dm-cache-policy-smq.c')
0 files changed, 0 insertions, 0 deletions