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dm io: Support IO priority

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Some IO will dispatch from kworker with different io_context settings
than the submitting task, we may need to specify a priority to avoid
losing priority.

Add IO priority parameter to dm_io() and update all callers.

Co-developed-by: Yibin Ding <yibin.ding@unisoc.com>
Signed-off-by: Yibin Ding <yibin.ding@unisoc.com>
Signed-off-by: Hongyu Jin <hongyu.jin@unisoc.com>
Reviewed-by: Eric Biggers <ebiggers@google.com>
Reviewed-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@kernel.org>
This commit is contained in:
Hongyu Jin
2024-01-24 13:35:53 +08:00
committed by Mike Snitzer
parent b9d3ac48a8
commit 6e5f0f6383
10 changed files with 38 additions and 34 deletions
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4
drivers/md/dm-snap-persistent.c
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@@ -223,7 +223,7 @@ static void do_metadata(struct work_struct *work)
{
struct mdata_req *req = container_of(work, struct mdata_req, work);
req->result = dm_io(req->io_req, 1, req->where, NULL);
req->result = dm_io(req->io_req, 1, req->where, NULL, IOPRIO_DEFAULT);
}
/*
@@ -247,7 +247,7 @@ static int chunk_io(struct pstore *ps, void *area, chunk_t chunk, blk_opf_t opf,
struct mdata_req req;
if (!metadata)
return dm_io(&io_req, 1, &where, NULL);
return dm_io(&io_req, 1, &where, NULL, IOPRIO_DEFAULT);
req.where = &where;
req.io_req = &io_req;