diff options
| author | Javier González <jg@lightnvm.io> | 2017-06-26 11:57:20 +0200 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2017-06-26 16:27:39 -0600 |
| commit | f9c101523da75cd483b95f04c21242bb83960d93 (patch) | |
| tree | a6d20ae407bb1768d844bab613f165617d7ddff3 /drivers/lightnvm/pblk-core.c | |
| parent | 0880a9aa2d91ff5131ecd0902a758afe760b9c1c (diff) | |
lightnvm: pblk: issue multiplane reads if possible
If a read request is sequential and its size aligns with a
multi-plane page size, use the multi-plane hint to process the I/O in
parallel in the controller.
Signed-off-by: Javier González <javier@cnexlabs.com>
Signed-off-by: Matias Bjørling <matias@cnexlabs.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'drivers/lightnvm/pblk-core.c')
| -rw-r--r-- | drivers/lightnvm/pblk-core.c | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/drivers/lightnvm/pblk-core.c b/drivers/lightnvm/pblk-core.c index beae1618483f..29565f89a85e 100644 --- a/drivers/lightnvm/pblk-core.c +++ b/drivers/lightnvm/pblk-core.c @@ -564,7 +564,6 @@ static int pblk_line_submit_emeta_io(struct pblk *pblk, struct pblk_line *line, int id = line->id; int rq_ppas, rq_len; int cmd_op, bio_op; - int flags; int i, j; int ret; DECLARE_COMPLETION_ONSTACK(wait); @@ -572,11 +571,9 @@ static int pblk_line_submit_emeta_io(struct pblk *pblk, struct pblk_line *line, if (dir == WRITE) { bio_op = REQ_OP_WRITE; cmd_op = NVM_OP_PWRITE; - flags = pblk_set_progr_mode(pblk, WRITE); } else if (dir == READ) { bio_op = REQ_OP_READ; cmd_op = NVM_OP_PREAD; - flags = pblk_set_read_mode(pblk); } else return -EINVAL; @@ -601,7 +598,6 @@ next_rq: rqd.bio = bio; rqd.opcode = cmd_op; - rqd.flags = flags; rqd.nr_ppas = rq_ppas; rqd.ppa_list = ppa_list; rqd.dma_ppa_list = dma_ppa_list; @@ -609,6 +605,7 @@ next_rq: rqd.private = &wait; if (dir == WRITE) { + rqd.flags = pblk_set_progr_mode(pblk, WRITE); for (i = 0; i < rqd.nr_ppas; ) { spin_lock(&line->lock); paddr = __pblk_alloc_page(pblk, line, min); @@ -621,6 +618,11 @@ next_rq: for (i = 0; i < rqd.nr_ppas; ) { struct ppa_addr ppa = addr_to_gen_ppa(pblk, paddr, id); int pos = pblk_dev_ppa_to_pos(geo, ppa); + int read_type = PBLK_READ_RANDOM; + + if (pblk_io_aligned(pblk, rq_ppas)) + read_type = PBLK_READ_SEQUENTIAL; + rqd.flags = pblk_set_read_mode(pblk, read_type); while (test_bit(pos, line->blk_bitmap)) { paddr += min; @@ -717,7 +719,7 @@ static int pblk_line_submit_smeta_io(struct pblk *pblk, struct pblk_line *line, } else if (dir == READ) { bio_op = REQ_OP_READ; cmd_op = NVM_OP_PREAD; - flags = pblk_set_read_mode(pblk); + flags = pblk_set_read_mode(pblk, PBLK_READ_SEQUENTIAL); } else return -EINVAL; |