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| author | Christoph Hellwig <hch@lst.de> | 2017-04-05 19:21:23 +0200 |
|---|---|---|
| committer | Jens Axboe <axboe@fb.com> | 2017-04-08 11:25:38 -0600 |
| commit | 48920ff2a5a940cd07d12cc79e4a2c75f1185aee (patch) | |
| tree | 0505a85fce20a0d34c5d4bbc71ba8771a037e209 /drivers/md/dm-table.c | |
| parent | 45c21793a6601b29926d67f7a07fe4077a45072e (diff) | |
| download | linux-48920ff2a5a940cd07d12cc79e4a2c75f1185aee.tar.gz | |
block: remove the discard_zeroes_data flag
Now that we use the proper REQ_OP_WRITE_ZEROES operation everywhere we can kill this hack. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'drivers/md/dm-table.c')
| -rw-r--r-- | drivers/md/dm-table.c | 19 |
1 files changed, 0 insertions, 19 deletions
diff --git a/drivers/md/dm-table.c b/drivers/md/dm-table.c index 5cd665c91ead..958275aca008 100644 --- a/drivers/md/dm-table.c +++ b/drivers/md/dm-table.c @@ -1449,22 +1449,6 @@ static bool dm_table_supports_flush(struct dm_table *t, unsigned long flush) return false; } -static bool dm_table_discard_zeroes_data(struct dm_table *t) -{ - struct dm_target *ti; - unsigned i = 0; - - /* Ensure that all targets supports discard_zeroes_data. */ - while (i < dm_table_get_num_targets(t)) { - ti = dm_table_get_target(t, i++); - - if (ti->discard_zeroes_data_unsupported) - return false; - } - - return true; -} - static int device_is_nonrot(struct dm_target *ti, struct dm_dev *dev, sector_t start, sector_t len, void *data) { @@ -1620,9 +1604,6 @@ void dm_table_set_restrictions(struct dm_table *t, struct request_queue *q, } blk_queue_write_cache(q, wc, fua); - if (!dm_table_discard_zeroes_data(t)) - q->limits.discard_zeroes_data = 0; - /* Ensure that all underlying devices are non-rotational. */ if (dm_table_all_devices_attribute(t, device_is_nonrot)) queue_flag_set_unlocked(QUEUE_FLAG_NONROT, q); |