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dm thin metadata: decrement counter after removing mapped block

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Correct the number of mapped sectors shown on a thin device's
status line by decrementing td->mapped_blocks in __remove() each time
a block is removed.

Signed-off-by: Joe Thornber <ejt@redhat.com>
Acked-by: Mike Snitzer <snitzer@redhat.com>
Cc: stable@kernel.org
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
This commit is contained in:
Joe Thornber 2012-03-07 19:09:44 +00:00 committed by Alasdair G Kergon
parent 4469a5f387
commit af63bcb817
1 changed files with 2 additions and 0 deletions
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2
drivers/md/dm-thin-metadata.c
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@ -1224,6 +1224,8 @@ static int __remove(struct dm_thin_device *td, dm_block_t block)
if (r)
return r;
td->mapped_blocks--;
td->changed = 1;
pmd->need_commit = 1;
return 0;