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authorMike Snitzer <snitzer@redhat.com>2013-08-21 17:40:11 -0400
committerMike Snitzer <snitzer@redhat.com>2013-09-05 20:46:06 -0400
commitd6fc204201ca7d019ab0eb5304d1e5c690ddedc8 (patch)
tree6efedcb54bc1452214541d68058160d508723510 /drivers/md
parent4fa5971a69ea1c427a23f2b8b4123f0f0d835861 (diff)
downloadlinux-next-d6fc204201ca7d019ab0eb5304d1e5c690ddedc8.tar.gz
dm thin: set pool read-only if breaking_sharing fails block allocation
break_sharing() now handles an arbitrary alloc_data_block() error the same way as provision_block(): marks pool read-only and errors the cell. Signed-off-by: Mike Snitzer <snitzer@redhat.com> Acked-by: Joe Thornber <ejt@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
Diffstat (limited to 'drivers/md')
-rw-r--r--drivers/md/dm-thin.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/md/dm-thin.c b/drivers/md/dm-thin.c
index c151cbf80b10..3aff1c27e5b4 100644
--- a/drivers/md/dm-thin.c
+++ b/drivers/md/dm-thin.c
@@ -1086,6 +1086,7 @@ static void break_sharing(struct thin_c *tc, struct bio *bio, dm_block_t block,
{
int r;
dm_block_t data_block;
+ struct pool *pool = tc->pool;
r = alloc_data_block(tc, &data_block);
switch (r) {
@@ -1095,13 +1096,14 @@ static void break_sharing(struct thin_c *tc, struct bio *bio, dm_block_t block,
break;
case -ENOSPC:
- no_space(tc->pool, cell);
+ no_space(pool, cell);
break;
default:
DMERR_LIMIT("%s: alloc_data_block() failed: error = %d",
__func__, r);
- cell_error(tc->pool, cell);
+ set_pool_mode(pool, PM_READ_ONLY);
+ cell_error(pool, cell);
break;
}
}