diff options
Diffstat (limited to 'drivers/md/dm-thin.c')
| -rw-r--r-- | drivers/md/dm-thin.c | 42 |
1 files changed, 18 insertions, 24 deletions
diff --git a/drivers/md/dm-thin.c b/drivers/md/dm-thin.c index 7945238df1c0..7bd60a150f8f 100644 --- a/drivers/md/dm-thin.c +++ b/drivers/md/dm-thin.c @@ -1220,18 +1220,13 @@ static struct dm_thin_new_mapping *get_next_mapping(struct pool *pool) static void ll_zero(struct thin_c *tc, struct dm_thin_new_mapping *m, sector_t begin, sector_t end) { - int r; struct dm_io_region to; to.bdev = tc->pool_dev->bdev; to.sector = begin; to.count = end - begin; - r = dm_kcopyd_zero(tc->pool->copier, 1, &to, 0, copy_complete, m); - if (r < 0) { - DMERR_LIMIT("dm_kcopyd_zero() failed"); - copy_complete(1, 1, m); - } + dm_kcopyd_zero(tc->pool->copier, 1, &to, 0, copy_complete, m); } static void remap_and_issue_overwrite(struct thin_c *tc, struct bio *bio, @@ -1257,7 +1252,6 @@ static void schedule_copy(struct thin_c *tc, dm_block_t virt_block, struct dm_bio_prison_cell *cell, struct bio *bio, sector_t len) { - int r; struct pool *pool = tc->pool; struct dm_thin_new_mapping *m = get_next_mapping(pool); @@ -1296,19 +1290,8 @@ static void schedule_copy(struct thin_c *tc, dm_block_t virt_block, to.sector = data_dest * pool->sectors_per_block; to.count = len; - r = dm_kcopyd_copy(pool->copier, &from, 1, &to, - 0, copy_complete, m); - if (r < 0) { - DMERR_LIMIT("dm_kcopyd_copy() failed"); - copy_complete(1, 1, m); - - /* - * We allow the zero to be issued, to simplify the - * error path. Otherwise we'd need to start - * worrying about decrementing the prepare_actions - * counter. - */ - } + dm_kcopyd_copy(pool->copier, &from, 1, &to, + 0, copy_complete, m); /* * Do we need to zero a tail region? @@ -1386,6 +1369,8 @@ static void schedule_external_copy(struct thin_c *tc, dm_block_t virt_block, static void set_pool_mode(struct pool *pool, enum pool_mode new_mode); +static void requeue_bios(struct pool *pool); + static void check_for_space(struct pool *pool) { int r; @@ -1398,8 +1383,10 @@ static void check_for_space(struct pool *pool) if (r) return; - if (nr_free) + if (nr_free) { set_pool_mode(pool, PM_WRITE); + requeue_bios(pool); + } } /* @@ -1476,7 +1463,10 @@ static int alloc_data_block(struct thin_c *tc, dm_block_t *result) r = dm_pool_alloc_data_block(pool->pmd, result); if (r) { - metadata_operation_failed(pool, "dm_pool_alloc_data_block", r); + if (r == -ENOSPC) + set_pool_mode(pool, PM_OUT_OF_DATA_SPACE); + else + metadata_operation_failed(pool, "dm_pool_alloc_data_block", r); return r; } @@ -2513,6 +2503,8 @@ static void set_pool_mode(struct pool *pool, enum pool_mode new_mode) case PM_WRITE: if (old_mode != new_mode) notify_of_pool_mode_change(pool, "write"); + if (old_mode == PM_OUT_OF_DATA_SPACE) + cancel_delayed_work_sync(&pool->no_space_timeout); pool->out_of_data_space = false; pool->pf.error_if_no_space = pt->requested_pf.error_if_no_space; dm_pool_metadata_read_write(pool->pmd); @@ -3883,6 +3875,8 @@ static void pool_status(struct dm_target *ti, status_type_t type, else DMEMIT("- "); + DMEMIT("%llu ", (unsigned long long)calc_metadata_threshold(pt)); + break; case STATUSTYPE_TABLE: @@ -3972,7 +3966,7 @@ static struct target_type pool_target = { .name = "thin-pool", .features = DM_TARGET_SINGLETON | DM_TARGET_ALWAYS_WRITEABLE | DM_TARGET_IMMUTABLE, - .version = {1, 19, 0}, + .version = {1, 20, 0}, .module = THIS_MODULE, .ctr = pool_ctr, .dtr = pool_dtr, @@ -4346,7 +4340,7 @@ static void thin_io_hints(struct dm_target *ti, struct queue_limits *limits) static struct target_type thin_target = { .name = "thin", - .version = {1, 19, 0}, + .version = {1, 20, 0}, .module = THIS_MODULE, .ctr = thin_ctr, .dtr = thin_dtr, |