diff options
| author | Javier González <jg@lightnvm.io> | 2017-06-30 17:56:39 +0200 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2017-06-30 11:08:18 -0600 |
| commit | de54e703a4229e4688eb77b32b1c27861384e22a (patch) | |
| tree | a615443d5f3c5ebe13616ad9331800d9b1bf466b /drivers/lightnvm/pblk-core.c | |
| parent | 8224cbd80be15908ecb6351b90291596e8bdcf79 (diff) | |
| download | linux-de54e703a4229e4688eb77b32b1c27861384e22a.tar.bz2 | |
lightnvm: pblk: use vmalloc for GC data buffer
For now, we allocate a per I/O buffer for GC data. Since the potential
size of the buffer is 256KB and GC is not in the fast path, do this
allocation with vmalloc. This puts lets pressure on the memory
allocator at no performance cost.
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 | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/drivers/lightnvm/pblk-core.c b/drivers/lightnvm/pblk-core.c index a654b34f6f86..74b8d9db05e1 100644 --- a/drivers/lightnvm/pblk-core.c +++ b/drivers/lightnvm/pblk-core.c @@ -425,16 +425,15 @@ int pblk_submit_io(struct pblk *pblk, struct nvm_rq *rqd) struct bio *pblk_bio_map_addr(struct pblk *pblk, void *data, unsigned int nr_secs, unsigned int len, - gfp_t gfp_mask) + int alloc_type, gfp_t gfp_mask) { struct nvm_tgt_dev *dev = pblk->dev; - struct pblk_line_mgmt *l_mg = &pblk->l_mg; void *kaddr = data; struct page *page; struct bio *bio; int i, ret; - if (l_mg->emeta_alloc_type == PBLK_KMALLOC_META) + if (alloc_type == PBLK_KMALLOC_META) return bio_map_kern(dev->q, kaddr, len, gfp_mask); bio = bio_kmalloc(gfp_mask, nr_secs); @@ -552,6 +551,7 @@ static int pblk_line_submit_emeta_io(struct pblk *pblk, struct pblk_line *line, { struct nvm_tgt_dev *dev = pblk->dev; struct nvm_geo *geo = &dev->geo; + struct pblk_line_mgmt *l_mg = &pblk->l_mg; struct pblk_line_meta *lm = &pblk->lm; void *ppa_list, *meta_list; struct bio *bio; @@ -589,7 +589,8 @@ next_rq: rq_ppas = pblk_calc_secs(pblk, left_ppas, 0); rq_len = rq_ppas * geo->sec_size; - bio = pblk_bio_map_addr(pblk, emeta_buf, rq_ppas, rq_len, GFP_KERNEL); + bio = pblk_bio_map_addr(pblk, emeta_buf, rq_ppas, rq_len, + l_mg->emeta_alloc_type, GFP_KERNEL); if (IS_ERR(bio)) { ret = PTR_ERR(bio); goto free_rqd_dma; |