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lightnvm: move metadata mapping to lower level driver 

Now that blk_rq_map_kern can map both kmem and vmem, move internal
metadata mapping down to the lower level driver.

Reviewed-by: Javier González <javier@javigon.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Hans Holmberg <hans@owltronix.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Hans Holmberg 2019-07-31 11:41:34 +02:00 committed by Jens Axboe
parent 98d87f70f4
commit 48e5da7255
8 changed files with 54 additions and 190 deletions
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16
drivers/lightnvm/core.c
View File

@ -731,7 +731,7 @@ static int nvm_set_flags(struct nvm_geo *geo, struct nvm_rq *rqd)
return flags;
}
int nvm_submit_io(struct nvm_tgt_dev *tgt_dev, struct nvm_rq *rqd)
int nvm_submit_io(struct nvm_tgt_dev *tgt_dev, struct nvm_rq *rqd, void *buf)
{
struct nvm_dev *dev = tgt_dev->parent;
int ret;
@ -745,7 +745,7 @@ int nvm_submit_io(struct nvm_tgt_dev *tgt_dev, struct nvm_rq *rqd)
rqd->flags = nvm_set_flags(&tgt_dev->geo, rqd);
/* In case of error, fail with right address format */
ret = dev->ops->submit_io(dev, rqd);
ret = dev->ops->submit_io(dev, rqd, buf);
if (ret)
nvm_rq_dev_to_tgt(tgt_dev, rqd);
return ret;
@ -759,7 +759,8 @@ static void nvm_sync_end_io(struct nvm_rq *rqd)
complete(waiting);
}
static int nvm_submit_io_wait(struct nvm_dev *dev, struct nvm_rq *rqd)
static int nvm_submit_io_wait(struct nvm_dev *dev, struct nvm_rq *rqd,
void *buf)
{
DECLARE_COMPLETION_ONSTACK(wait);
int ret = 0;
@ -767,7 +768,7 @@ static int nvm_submit_io_wait(struct nvm_dev *dev, struct nvm_rq *rqd)
rqd->end_io = nvm_sync_end_io;
rqd->private = &wait;
ret = dev->ops->submit_io(dev, rqd);
ret = dev->ops->submit_io(dev, rqd, buf);
if (ret)
return ret;
@ -776,7 +777,8 @@ static int nvm_submit_io_wait(struct nvm_dev *dev, struct nvm_rq *rqd)
return 0;
}
int nvm_submit_io_sync(struct nvm_tgt_dev *tgt_dev, struct nvm_rq *rqd)
int nvm_submit_io_sync(struct nvm_tgt_dev *tgt_dev, struct nvm_rq *rqd,
void *buf)
{
struct nvm_dev *dev = tgt_dev->parent;
int ret;
@ -789,7 +791,7 @@ int nvm_submit_io_sync(struct nvm_tgt_dev *tgt_dev, struct nvm_rq *rqd)
rqd->dev = tgt_dev;
rqd->flags = nvm_set_flags(&tgt_dev->geo, rqd);
ret = nvm_submit_io_wait(dev, rqd);
ret = nvm_submit_io_wait(dev, rqd, buf);
return ret;
}
@ -816,7 +818,7 @@ static int nvm_submit_io_sync_raw(struct nvm_dev *dev, struct nvm_rq *rqd)
rqd->dev = NULL;
rqd->flags = nvm_set_flags(&dev->geo, rqd);
return nvm_submit_io_wait(dev, rqd);
return nvm_submit_io_wait(dev, rqd, NULL);
}
static int nvm_bb_chunk_sense(struct nvm_dev *dev, struct ppa_addr ppa)

113
drivers/lightnvm/pblk-core.c
View File

@ -507,7 +507,7 @@ void pblk_set_sec_per_write(struct pblk *pblk, int sec_per_write)
pblk->sec_per_write = sec_per_write;
}
int pblk_submit_io(struct pblk *pblk, struct nvm_rq *rqd)
int pblk_submit_io(struct pblk *pblk, struct nvm_rq *rqd, void *buf)
{
struct nvm_tgt_dev *dev = pblk->dev;
@ -518,7 +518,7 @@ int pblk_submit_io(struct pblk *pblk, struct nvm_rq *rqd)
return NVM_IO_ERR;
#endif
return nvm_submit_io(dev, rqd);
return nvm_submit_io(dev, rqd, buf);
}
void pblk_check_chunk_state_update(struct pblk *pblk, struct nvm_rq *rqd)
@ -541,7 +541,7 @@ void pblk_check_chunk_state_update(struct pblk *pblk, struct nvm_rq *rqd)
}
}
int pblk_submit_io_sync(struct pblk *pblk, struct nvm_rq *rqd)
int pblk_submit_io_sync(struct pblk *pblk, struct nvm_rq *rqd, void *buf)
{
struct nvm_tgt_dev *dev = pblk->dev;
int ret;
@ -553,7 +553,7 @@ int pblk_submit_io_sync(struct pblk *pblk, struct nvm_rq *rqd)
return NVM_IO_ERR;
#endif
ret = nvm_submit_io_sync(dev, rqd);
ret = nvm_submit_io_sync(dev, rqd, buf);
if (trace_pblk_chunk_state_enabled() && !ret &&
rqd->opcode == NVM_OP_PWRITE)
@ -562,65 +562,19 @@ int pblk_submit_io_sync(struct pblk *pblk, struct nvm_rq *rqd)
return ret;
}
int pblk_submit_io_sync_sem(struct pblk *pblk, struct nvm_rq *rqd)
static int pblk_submit_io_sync_sem(struct pblk *pblk, struct nvm_rq *rqd,
void *buf)
{
struct ppa_addr *ppa_list = nvm_rq_to_ppa_list(rqd);
int ret;
pblk_down_chunk(pblk, ppa_list[0]);
ret = pblk_submit_io_sync(pblk, rqd);
ret = pblk_submit_io_sync(pblk, rqd, buf);
pblk_up_chunk(pblk, ppa_list[0]);
return ret;
}
static void pblk_bio_map_addr_endio(struct bio *bio)
{
bio_put(bio);
}
struct bio *pblk_bio_map_addr(struct pblk *pblk, void *data,
unsigned int nr_secs, unsigned int len,
int alloc_type, gfp_t gfp_mask)
{
struct nvm_tgt_dev *dev = pblk->dev;
void *kaddr = data;
struct page *page;
struct bio *bio;
int i, ret;
if (alloc_type == PBLK_KMALLOC_META)
return bio_map_kern(dev->q, kaddr, len, gfp_mask);
bio = bio_kmalloc(gfp_mask, nr_secs);
if (!bio)
return ERR_PTR(-ENOMEM);
for (i = 0; i < nr_secs; i++) {
page = vmalloc_to_page(kaddr);
if (!page) {
pblk_err(pblk, "could not map vmalloc bio\n");
bio_put(bio);
bio = ERR_PTR(-ENOMEM);
goto out;
}
ret = bio_add_pc_page(dev->q, bio, page, PAGE_SIZE, 0);
if (ret != PAGE_SIZE) {
pblk_err(pblk, "could not add page to bio\n");
bio_put(bio);
bio = ERR_PTR(-ENOMEM);
goto out;
}
kaddr += PAGE_SIZE;
}
bio->bi_end_io = pblk_bio_map_addr_endio;
out:
return bio;
}
int pblk_calc_secs(struct pblk *pblk, unsigned long secs_avail,
unsigned long secs_to_flush, bool skip_meta)
{
@ -722,9 +676,7 @@ u64 pblk_line_smeta_start(struct pblk *pblk, struct pblk_line *line)
int pblk_line_smeta_read(struct pblk *pblk, struct pblk_line *line)
{
struct nvm_tgt_dev *dev = pblk->dev;
struct pblk_line_meta *lm = &pblk->lm;
struct bio *bio;
struct ppa_addr *ppa_list;
struct nvm_rq rqd;
u64 paddr = pblk_line_smeta_start(pblk, line);
@ -736,16 +688,6 @@ int pblk_line_smeta_read(struct pblk *pblk, struct pblk_line *line)
if (ret)
return ret;
bio = bio_map_kern(dev->q, line->smeta, lm->smeta_len, GFP_KERNEL);
if (IS_ERR(bio)) {
ret = PTR_ERR(bio);
goto clear_rqd;
}
bio->bi_iter.bi_sector = 0; /* internal bio */
bio_set_op_attrs(bio, REQ_OP_READ, 0);
rqd.bio = bio;
rqd.opcode = NVM_OP_PREAD;
rqd.nr_ppas = lm->smeta_sec;
rqd.is_seq = 1;
@ -754,10 +696,9 @@ int pblk_line_smeta_read(struct pblk *pblk, struct pblk_line *line)
for (i = 0; i < lm->smeta_sec; i++, paddr++)
ppa_list[i] = addr_to_gen_ppa(pblk, paddr, line->id);
ret = pblk_submit_io_sync(pblk, &rqd);
ret = pblk_submit_io_sync(pblk, &rqd, line->smeta);
if (ret) {
pblk_err(pblk, "smeta I/O submission failed: %d\n", ret);
bio_put(bio);
goto clear_rqd;
}
@ -776,9 +717,7 @@ clear_rqd:
static int pblk_line_smeta_write(struct pblk *pblk, struct pblk_line *line,
u64 paddr)
{
struct nvm_tgt_dev *dev = pblk->dev;
struct pblk_line_meta *lm = &pblk->lm;
struct bio *bio;
struct ppa_addr *ppa_list;
struct nvm_rq rqd;
__le64 *lba_list = emeta_to_lbas(pblk, line->emeta->buf);
@ -791,16 +730,6 @@ static int pblk_line_smeta_write(struct pblk *pblk, struct pblk_line *line,
if (ret)
return ret;
bio = bio_map_kern(dev->q, line->smeta, lm->smeta_len, GFP_KERNEL);
if (IS_ERR(bio)) {
ret = PTR_ERR(bio);
goto clear_rqd;
}
bio->bi_iter.bi_sector = 0; /* internal bio */
bio_set_op_attrs(bio, REQ_OP_WRITE, 0);
rqd.bio = bio;
rqd.opcode = NVM_OP_PWRITE;
rqd.nr_ppas = lm->smeta_sec;
rqd.is_seq = 1;
@ -814,10 +743,9 @@ static int pblk_line_smeta_write(struct pblk *pblk, struct pblk_line *line,
meta->lba = lba_list[paddr] = addr_empty;
}
ret = pblk_submit_io_sync_sem(pblk, &rqd);
ret = pblk_submit_io_sync_sem(pblk, &rqd, line->smeta);
if (ret) {
pblk_err(pblk, "smeta I/O submission failed: %d\n", ret);
bio_put(bio);
goto clear_rqd;
}
@ -838,10 +766,8 @@ int pblk_line_emeta_read(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_buf, *meta_list;
struct bio *bio;
struct ppa_addr *ppa_list;
struct nvm_rq rqd;
u64 paddr = line->emeta_ssec;
@ -867,17 +793,6 @@ next_rq:
rq_ppas = pblk_calc_secs(pblk, left_ppas, 0, false);
rq_len = rq_ppas * geo->csecs;
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;
}
bio->bi_iter.bi_sector = 0; /* internal bio */
bio_set_op_attrs(bio, REQ_OP_READ, 0);
rqd.bio = bio;
rqd.meta_list = meta_list;
rqd.ppa_list = ppa_list_buf;
rqd.dma_meta_list = dma_meta_list;
@ -896,7 +811,6 @@ next_rq:
while (test_bit(pos, line->blk_bitmap)) {
paddr += min;
if (pblk_boundary_paddr_checks(pblk, paddr)) {
bio_put(bio);
ret = -EINTR;
goto free_rqd_dma;
}
@ -906,7 +820,6 @@ next_rq:
}
if (pblk_boundary_paddr_checks(pblk, paddr + min)) {
bio_put(bio);
ret = -EINTR;
goto free_rqd_dma;
}
@ -915,10 +828,9 @@ next_rq:
ppa_list[i] = addr_to_gen_ppa(pblk, paddr, line_id);
}
ret = pblk_submit_io_sync(pblk, &rqd);
ret = pblk_submit_io_sync(pblk, &rqd, emeta_buf);
if (ret) {
pblk_err(pblk, "emeta I/O submission failed: %d\n", ret);
bio_put(bio);
goto free_rqd_dma;
}
@ -963,7 +875,7 @@ static int pblk_blk_erase_sync(struct pblk *pblk, struct ppa_addr ppa)
/* The write thread schedules erases so that it minimizes disturbances
* with writes. Thus, there is no need to take the LUN semaphore.
*/
ret = pblk_submit_io_sync(pblk, &rqd);
ret = pblk_submit_io_sync(pblk, &rqd, NULL);
rqd.private = pblk;
__pblk_end_io_erase(pblk, &rqd);
@ -1792,7 +1704,7 @@ int pblk_blk_erase_async(struct pblk *pblk, struct ppa_addr ppa)
/* The write thread schedules erases so that it minimizes disturbances
* with writes. Thus, there is no need to take the LUN semaphore.
*/
err = pblk_submit_io(pblk, rqd);
err = pblk_submit_io(pblk, rqd, NULL);
if (err) {
struct nvm_tgt_dev *dev = pblk->dev;
struct nvm_geo *geo = &dev->geo;
@ -1923,7 +1835,6 @@ void pblk_line_close_meta(struct pblk *pblk, struct pblk_line *line)
static void pblk_save_lba_list(struct pblk *pblk, struct pblk_line *line)
{
struct pblk_line_meta *lm = &pblk->lm;
struct pblk_line_mgmt *l_mg = &pblk->l_mg;
unsigned int lba_list_size = lm->emeta_len[2];
struct pblk_w_err_gc *w_err_gc = line->w_err_gc;
struct pblk_emeta *emeta = line->emeta;

22
drivers/lightnvm/pblk-read.c
View File

@ -342,7 +342,7 @@ split_retry:
bio_put(int_bio);
int_bio = bio_clone_fast(bio, GFP_KERNEL, &pblk_bio_set);
goto split_retry;
} else if (pblk_submit_io(pblk, rqd)) {
} else if (pblk_submit_io(pblk, rqd, NULL)) {
/* Submitting IO to drive failed, let's report an error */
rqd->error = -ENODEV;
pblk_end_io_read(rqd);
@ -419,7 +419,6 @@ int pblk_submit_read_gc(struct pblk *pblk, struct pblk_gc_rq *gc_rq)
{
struct nvm_tgt_dev *dev = pblk->dev;
struct nvm_geo *geo = &dev->geo;
struct bio *bio;
struct nvm_rq rqd;
int data_len;
int ret = NVM_IO_OK;
@ -447,25 +446,12 @@ int pblk_submit_read_gc(struct pblk *pblk, struct pblk_gc_rq *gc_rq)
goto out;
data_len = (gc_rq->secs_to_gc) * geo->csecs;
bio = pblk_bio_map_addr(pblk, gc_rq->data, gc_rq->secs_to_gc, data_len,
PBLK_VMALLOC_META, GFP_KERNEL);
if (IS_ERR(bio)) {
pblk_err(pblk, "could not allocate GC bio (%lu)\n",
PTR_ERR(bio));
ret = PTR_ERR(bio);
goto err_free_dma;
}
bio->bi_iter.bi_sector = 0; /* internal bio */
bio_set_op_attrs(bio, REQ_OP_READ, 0);
rqd.opcode = NVM_OP_PREAD;
rqd.nr_ppas = gc_rq->secs_to_gc;
rqd.bio = bio;
if (pblk_submit_io_sync(pblk, &rqd)) {
if (pblk_submit_io_sync(pblk, &rqd, gc_rq->data)) {
ret = -EIO;
goto err_free_bio;
goto err_free_dma;
}
pblk_read_check_rand(pblk, &rqd, gc_rq->lba_list, gc_rq->nr_secs);
@ -489,8 +475,6 @@ out:
pblk_free_rqd_meta(pblk, &rqd);
return ret;
err_free_bio:
bio_put(bio);
err_free_dma:
pblk_free_rqd_meta(pblk, &rqd);
return ret;

39
drivers/lightnvm/pblk-recovery.c
View File

@ -178,12 +178,11 @@ static int pblk_recov_pad_line(struct pblk *pblk, struct pblk_line *line,
void *meta_list;
struct pblk_pad_rq *pad_rq;
struct nvm_rq *rqd;
struct bio *bio;
struct ppa_addr *ppa_list;
void *data;
__le64 *lba_list = emeta_to_lbas(pblk, line->emeta->buf);
u64 w_ptr = line->cur_sec;
int left_line_ppas, rq_ppas, rq_len;
int left_line_ppas, rq_ppas;
int i, j;
int ret = 0;
@ -212,28 +211,15 @@ next_pad_rq:
goto fail_complete;
}
rq_len = rq_ppas * geo->csecs;
bio = pblk_bio_map_addr(pblk, data, rq_ppas, rq_len,
PBLK_VMALLOC_META, GFP_KERNEL);
if (IS_ERR(bio)) {
ret = PTR_ERR(bio);
goto fail_complete;
}
bio->bi_iter.bi_sector = 0; /* internal bio */
bio_set_op_attrs(bio, REQ_OP_WRITE, 0);
rqd = pblk_alloc_rqd(pblk, PBLK_WRITE_INT);
ret = pblk_alloc_rqd_meta(pblk, rqd);
if (ret) {
pblk_free_rqd(pblk, rqd, PBLK_WRITE_INT);
bio_put(bio);
goto fail_complete;
}
rqd->bio = bio;
rqd->bio = NULL;
rqd->opcode = NVM_OP_PWRITE;
rqd->is_seq = 1;
rqd->nr_ppas = rq_ppas;
@ -275,13 +261,12 @@ next_pad_rq:
kref_get(&pad_rq->ref);
pblk_down_chunk(pblk, ppa_list[0]);
ret = pblk_submit_io(pblk, rqd);
ret = pblk_submit_io(pblk, rqd, data);
if (ret) {
pblk_err(pblk, "I/O submission failed: %d\n", ret);
pblk_up_chunk(pblk, ppa_list[0]);
kref_put(&pad_rq->ref, pblk_recov_complete);
pblk_free_rqd(pblk, rqd, PBLK_WRITE_INT);
bio_put(bio);
goto fail_complete;
}
@ -375,7 +360,6 @@ static int pblk_recov_scan_oob(struct pblk *pblk, struct pblk_line *line,
struct ppa_addr *ppa_list;
void *meta_list;
struct nvm_rq *rqd;
struct bio *bio;
void *data;
dma_addr_t dma_ppa_list, dma_meta_list;
__le64 *lba_list;
@ -407,15 +391,7 @@ next_rq:
rq_len = rq_ppas * geo->csecs;
retry_rq:
bio = bio_map_kern(dev->q, data, rq_len, GFP_KERNEL);
if (IS_ERR(bio))
return PTR_ERR(bio);
bio->bi_iter.bi_sector = 0; /* internal bio */
bio_set_op_attrs(bio, REQ_OP_READ, 0);
bio_get(bio);
rqd->bio = bio;
rqd->bio = NULL;
rqd->opcode = NVM_OP_PREAD;
rqd->meta_list = meta_list;
rqd->nr_ppas = rq_ppas;
@ -445,10 +421,9 @@ retry_rq:
addr_to_gen_ppa(pblk, paddr + j, line->id);
}
ret = pblk_submit_io_sync(pblk, rqd);
ret = pblk_submit_io_sync(pblk, rqd, data);
if (ret) {
pblk_err(pblk, "I/O submission failed: %d\n", ret);
bio_put(bio);
return ret;
}
@ -460,24 +435,20 @@ retry_rq:
if (padded) {
pblk_log_read_err(pblk, rqd);
bio_put(bio);
return -EINTR;
}
pad_distance = pblk_pad_distance(pblk, line);
ret = pblk_recov_pad_line(pblk, line, pad_distance);
if (ret) {
bio_put(bio);
return ret;
}
padded = true;
bio_put(bio);
goto retry_rq;
}
pblk_get_packed_meta(pblk, rqd);
bio_put(bio);
for (i = 0; i < rqd->nr_ppas; i++) {
struct pblk_sec_meta *meta = pblk_get_meta(pblk, meta_list, i);

20
drivers/lightnvm/pblk-write.c
View File

@ -373,7 +373,6 @@ int pblk_submit_meta_io(struct pblk *pblk, struct pblk_line *meta_line)
struct pblk_emeta *emeta = meta_line->emeta;
struct ppa_addr *ppa_list;
struct pblk_g_ctx *m_ctx;
struct bio *bio;
struct nvm_rq *rqd;
void *data;
u64 paddr;
@ -391,20 +390,9 @@ int pblk_submit_meta_io(struct pblk *pblk, struct pblk_line *meta_line)
rq_len = rq_ppas * geo->csecs;
data = ((void *)emeta->buf) + emeta->mem;
bio = pblk_bio_map_addr(pblk, data, rq_ppas, rq_len,
l_mg->emeta_alloc_type, GFP_KERNEL);
if (IS_ERR(bio)) {
pblk_err(pblk, "failed to map emeta io");
ret = PTR_ERR(bio);
goto fail_free_rqd;
}
bio->bi_iter.bi_sector = 0; /* internal bio */
bio_set_op_attrs(bio, REQ_OP_WRITE, 0);
rqd->bio = bio;
ret = pblk_alloc_w_rq(pblk, rqd, rq_ppas, pblk_end_io_write_meta);
if (ret)
goto fail_free_bio;
goto fail_free_rqd;
ppa_list = nvm_rq_to_ppa_list(rqd);
for (i = 0; i < rqd->nr_ppas; ) {
@ -423,7 +411,7 @@ int pblk_submit_meta_io(struct pblk *pblk, struct pblk_line *meta_line)
pblk_down_chunk(pblk, ppa_list[0]);
ret = pblk_submit_io(pblk, rqd);
ret = pblk_submit_io(pblk, rqd, data);
if (ret) {
pblk_err(pblk, "emeta I/O submission failed: %d\n", ret);
goto fail_rollback;
@ -437,8 +425,6 @@ fail_rollback:
pblk_dealloc_page(pblk, meta_line, rq_ppas);
list_add(&meta_line->list, &meta_line->list);
spin_unlock(&l_mg->close_lock);
fail_free_bio:
bio_put(bio);
fail_free_rqd:
pblk_free_rqd(pblk, rqd, PBLK_WRITE_INT);
return ret;
@ -523,7 +509,7 @@ static int pblk_submit_io_set(struct pblk *pblk, struct nvm_rq *rqd)
meta_line = pblk_should_submit_meta_io(pblk, rqd);
/* Submit data write for current data line */
err = pblk_submit_io(pblk, rqd);
err = pblk_submit_io(pblk, rqd, NULL);
if (err) {
pblk_err(pblk, "data I/O submission failed: %d\n", err);
return NVM_IO_ERR;

8
drivers/lightnvm/pblk.h
View File

@ -783,14 +783,10 @@ struct nvm_chk_meta *pblk_chunk_get_off(struct pblk *pblk,
struct ppa_addr ppa);
void pblk_log_write_err(struct pblk *pblk, struct nvm_rq *rqd);
void pblk_log_read_err(struct pblk *pblk, struct nvm_rq *rqd);
int pblk_submit_io(struct pblk *pblk, struct nvm_rq *rqd);
int pblk_submit_io_sync(struct pblk *pblk, struct nvm_rq *rqd);
int pblk_submit_io_sync_sem(struct pblk *pblk, struct nvm_rq *rqd);
int pblk_submit_io(struct pblk *pblk, struct nvm_rq *rqd, void *buf);
int pblk_submit_io_sync(struct pblk *pblk, struct nvm_rq *rqd, void *buf);
int pblk_submit_meta_io(struct pblk *pblk, struct pblk_line *meta_line);
void pblk_check_chunk_state_update(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,
int alloc_type, gfp_t gfp_mask);
struct pblk_line *pblk_line_get(struct pblk *pblk);
struct pblk_line *pblk_line_get_first_data(struct pblk *pblk);
struct pblk_line *pblk_line_replace_data(struct pblk *pblk);

20
drivers/nvme/host/lightnvm.c
View File

@ -667,11 +667,14 @@ static struct request *nvme_nvm_alloc_request(struct request_queue *q,
return rq;
}
static int nvme_nvm_submit_io(struct nvm_dev *dev, struct nvm_rq *rqd)
static int nvme_nvm_submit_io(struct nvm_dev *dev, struct nvm_rq *rqd,
void *buf)
{
struct nvm_geo *geo = &dev->geo;
struct request_queue *q = dev->q;
struct nvme_nvm_command *cmd;
struct request *rq;
int ret;
cmd = kzalloc(sizeof(struct nvme_nvm_command), GFP_KERNEL);
if (!cmd)
@ -679,8 +682,15 @@ static int nvme_nvm_submit_io(struct nvm_dev *dev, struct nvm_rq *rqd)
rq = nvme_nvm_alloc_request(q, rqd, cmd);
if (IS_ERR(rq)) {
kfree(cmd);
return PTR_ERR(rq);
ret = PTR_ERR(rq);
goto err_free_cmd;
}
if (buf) {
ret = blk_rq_map_kern(q, rq, buf, geo->csecs * rqd->nr_ppas,
GFP_KERNEL);
if (ret)
goto err_free_cmd;
}
rq->end_io_data = rqd;
@ -688,6 +698,10 @@ static int nvme_nvm_submit_io(struct nvm_dev *dev, struct nvm_rq *rqd)
blk_execute_rq_nowait(q, NULL, rq, 0, nvme_nvm_end_io);
return 0;
err_free_cmd:
kfree(cmd);
return ret;
}
static void *nvme_nvm_create_dma_pool(struct nvm_dev *nvmdev, char *name,

6
include/linux/lightnvm.h
View File

@ -88,7 +88,7 @@ typedef int (nvm_op_bb_tbl_fn)(struct nvm_dev *, struct ppa_addr, u8 *);
typedef int (nvm_op_set_bb_fn)(struct nvm_dev *, struct ppa_addr *, int, int);
typedef int (nvm_get_chk_meta_fn)(struct nvm_dev *, sector_t, int,
struct nvm_chk_meta *);
typedef int (nvm_submit_io_fn)(struct nvm_dev *, struct nvm_rq *);
typedef int (nvm_submit_io_fn)(struct nvm_dev *, struct nvm_rq *, void *);
typedef void *(nvm_create_dma_pool_fn)(struct nvm_dev *, char *, int);
typedef void (nvm_destroy_dma_pool_fn)(void *);
typedef void *(nvm_dev_dma_alloc_fn)(struct nvm_dev *, void *, gfp_t,
@ -680,8 +680,8 @@ extern int nvm_get_chunk_meta(struct nvm_tgt_dev *, struct ppa_addr,
int, struct nvm_chk_meta *);
extern int nvm_set_chunk_meta(struct nvm_tgt_dev *, struct ppa_addr *,
int, int);
extern int nvm_submit_io(struct nvm_tgt_dev *, struct nvm_rq *);
extern int nvm_submit_io_sync(struct nvm_tgt_dev *, struct nvm_rq *);
extern int nvm_submit_io(struct nvm_tgt_dev *, struct nvm_rq *, void *);
extern int nvm_submit_io_sync(struct nvm_tgt_dev *, struct nvm_rq *, void *);
extern void nvm_end_io(struct nvm_rq *);
#else /* CONFIG_NVM */