[PATCH 3/4] loop: Forward REQ_OP_ASSIGN_RANGE into fallocate(0)
From: Chaitanya Kulkarni <hidden>
Date: 2020-03-29 18:52:55
Also in:
linux-ext4
Subsystem:
block layer, the rest · Maintainers:
Jens Axboe, Linus Torvalds
From: Kirill Tkhai <redacted> From: Kirill Tkhai <redacted> Send fallocate(0) request into underlining filesystem after upper filesystem sent REQ_OP_ASSIGN_RANGE request to block device. Signed-off-by: Kirill Tkhai <redacted> [Use blk_queue_max_assign_range_sectors() from newly updated previous patch.] Signed-off-by: Chaitanya Kulkarni <redacted> --- drivers/block/loop.c | 5 +++++ 1 file changed, 5 insertions(+)
diff --git a/drivers/block/loop.c b/drivers/block/loop.c
index 739b372a5112..0a28db66c485 100644
--- a/drivers/block/loop.c
+++ b/drivers/block/loop.c@@ -609,6 +609,8 @@ 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_ASSIGN_RANGE: + return lo_fallocate(lo, rq, pos, 0); case REQ_OP_WRITE: if (lo->transfer) return lo_write_transfer(lo, rq, pos);
@@ -876,6 +878,7 @@ 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_assign_range_sectors(q, 0); blk_queue_max_write_zeroes_sectors(q, 0); blk_queue_flag_clear(QUEUE_FLAG_DISCARD, q); return;
@@ -886,6 +889,7 @@ 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_assign_range_sectors(q, UINT_MAX >> 9); blk_queue_flag_set(QUEUE_FLAG_DISCARD, q); }
@@ -1917,6 +1921,7 @@ 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_ASSIGN_RANGE: cmd->use_aio = false; break; default:
--
2.22.0