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-read.c | |
| parent | lightnvm: pblk: delete redundant buffer pointer (diff) | |
| download | linux-dev-f9c101523da75cd483b95f04c21242bb83960d93.tar.xz linux-dev-f9c101523da75cd483b95f04c21242bb83960d93.zip | |
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-read.c')
| -rw-r--r-- | drivers/lightnvm/pblk-read.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/drivers/lightnvm/pblk-read.c b/drivers/lightnvm/pblk-read.c index 9c4d89cdd32f..1e7e98961821 100644 --- a/drivers/lightnvm/pblk-read.c +++ b/drivers/lightnvm/pblk-read.c @@ -88,6 +88,11 @@ retry: bio_advance(bio, PBLK_EXPOSED_PAGE_SIZE); } + if (pblk_io_aligned(pblk, nr_secs)) + rqd->flags = pblk_set_read_mode(pblk, PBLK_READ_SEQUENTIAL); + else + rqd->flags = pblk_set_read_mode(pblk, PBLK_READ_RANDOM); + #ifdef CONFIG_NVM_DEBUG atomic_long_add(nr_secs, &pblk->inflight_reads); #endif @@ -97,8 +102,6 @@ static int pblk_submit_read_io(struct pblk *pblk, struct nvm_rq *rqd) { int err; - rqd->flags = pblk_set_read_mode(pblk); - err = pblk_submit_io(pblk, rqd); if (err) return NVM_IO_ERR; @@ -177,6 +180,7 @@ static int pblk_fill_partial_read_bio(struct pblk *pblk, struct nvm_rq *rqd, rqd->bio = new_bio; rqd->nr_ppas = nr_holes; + rqd->flags = pblk_set_read_mode(pblk, PBLK_READ_RANDOM); rqd->end_io = NULL; if (unlikely(nr_secs > 1 && nr_holes == 1)) { @@ -290,6 +294,8 @@ retry: } else { rqd->ppa_addr = ppa; } + + rqd->flags = pblk_set_read_mode(pblk, PBLK_READ_RANDOM); } int pblk_submit_read(struct pblk *pblk, struct bio *bio) @@ -497,6 +503,7 @@ int pblk_submit_read_gc(struct pblk *pblk, u64 *lba_list, void *data, rqd.end_io = pblk_end_io_sync; rqd.private = &wait; rqd.nr_ppas = *secs_to_gc; + rqd.flags = pblk_set_read_mode(pblk, PBLK_READ_RANDOM); rqd.bio = bio; ret = pblk_submit_read_io(pblk, &rqd); |