From d6fc204201ca7d019ab0eb5304d1e5c690ddedc8 Mon Sep 17 00:00:00 2001 From: Mike Snitzer Date: Wed, 21 Aug 2013 17:40:11 -0400 Subject: 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 Acked-by: Joe Thornber Signed-off-by: Alasdair G Kergon --- drivers/md/dm-thin.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) (limited to 'drivers/md') 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; } } -- cgit v1.2.3