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dm thin: return error from alloc_data_block if pool is not in write mode 

Signed-off-by: Joe Thornber <ejt@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
hifive-unleashed-5.1
Joe Thornber 2013-12-04 19:16:11 -05:00 committed by Mike Snitzer
parent 7f21466512
commit 8d30abff75
1 changed files with 3 additions and 0 deletions
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3
drivers/md/dm-thin.c
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@ -923,6 +923,9 @@ static int alloc_data_block(struct thin_c *tc, dm_block_t *result)
if (pool->no_free_space)
return -ENOSPC;
if (get_pool_mode(pool) != PM_WRITE)
return -EINVAL;
r = dm_pool_get_free_block_count(pool->pmd, &free_blocks);
if (r)
return r;