From: Kirill Tkhai <ktkhai@xxxxxxxxxxxxx> Send fallocate(0) request into underlining filesystem after upper filesystem sent REQ_OP_ALLOCATE request to block device. Signed-off-by: Kirill Tkhai <ktkhai@xxxxxxxxxxxxx> [Use blk_queue_max_allocate_sectors() from newly updated previous patch.] Signed-off-by: Chaitanya Kulkarni <chaitanya.kulkarni@xxxxxxx> --- drivers/block/loop.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/block/loop.c b/drivers/block/loop.c index a42c49e04954..26ff16e34f5a 100644 --- a/drivers/block/loop.c +++ b/drivers/block/loop.c @@ -611,6 +611,8 @@ static int do_req_filebacked(struct loop_device *lo, struct request *rq) FALLOC_FL_PUNCH_HOLE); case REQ_OP_DISCARD: return lo_fallocate(lo, rq, pos, FALLOC_FL_PUNCH_HOLE); + case REQ_OP_ALLOCATE: + return lo_fallocate(lo, rq, pos, 0); case REQ_OP_WRITE: if (lo->transfer) return lo_write_transfer(lo, rq, pos); @@ -878,6 +880,7 @@ static void loop_config_discard(struct loop_device *lo) q->limits.discard_granularity = 0; q->limits.discard_alignment = 0; blk_queue_max_discard_sectors(q, 0); + blk_queue_max_allocate_sectors(q, 0); blk_queue_max_write_zeroes_sectors(q, 0); blk_queue_flag_clear(QUEUE_FLAG_DISCARD, q); return; @@ -888,6 +891,7 @@ static void loop_config_discard(struct loop_device *lo) blk_queue_max_discard_sectors(q, UINT_MAX >> 9); blk_queue_max_write_zeroes_sectors(q, UINT_MAX >> 9); + blk_queue_max_allocate_sectors(q, UINT_MAX >> 9); blk_queue_flag_set(QUEUE_FLAG_DISCARD, q); } @@ -1919,6 +1923,7 @@ static blk_status_t loop_queue_rq(struct blk_mq_hw_ctx *hctx, case REQ_OP_FLUSH: case REQ_OP_DISCARD: case REQ_OP_WRITE_ZEROES: + case REQ_OP_ALLOCATE: cmd->use_aio = false; break; default: -- 2.22.0
