Refactor lba sanity check on read path to avoid code duplication. Signed-off-by: Javier González <javier@xxxxxxxxxxxx> Signed-off-by: Matias Bjørling <matias@xxxxxxxxxxxx> --- drivers/lightnvm/pblk-read.c | 29 ++++++++++------------------- 1 file changed, 10 insertions(+), 19 deletions(-) diff --git a/drivers/lightnvm/pblk-read.c b/drivers/lightnvm/pblk-read.c index d682e89e6493..db9a3b575f62 100644 --- a/drivers/lightnvm/pblk-read.c +++ b/drivers/lightnvm/pblk-read.c @@ -39,21 +39,14 @@ static int pblk_read_from_cache(struct pblk *pblk, struct bio *bio, } static void pblk_read_ppalist_rq(struct pblk *pblk, struct nvm_rq *rqd, - unsigned long *read_bitmap) + sector_t blba, unsigned long *read_bitmap) { struct bio *bio = rqd->bio; struct ppa_addr ppas[PBLK_MAX_REQ_ADDRS]; - sector_t blba = pblk_get_lba(bio); int nr_secs = rqd->nr_ppas; bool advanced_bio = false; int i, j = 0; - /* logic error: lba out-of-bounds. Ignore read request */ - if (blba + nr_secs >= pblk->rl.nr_secs) { - WARN(1, "pblk: read lbas out of bounds\n"); - return; - } - pblk_lookup_l2p_seq(pblk, ppas, blba, nr_secs); for (i = 0; i < nr_secs; i++) { @@ -263,17 +256,10 @@ static int pblk_fill_partial_read_bio(struct pblk *pblk, struct nvm_rq *rqd, } static void pblk_read_rq(struct pblk *pblk, struct nvm_rq *rqd, - unsigned long *read_bitmap) + sector_t lba, unsigned long *read_bitmap) { struct bio *bio = rqd->bio; struct ppa_addr ppa; - sector_t lba = pblk_get_lba(bio); - - /* logic error: lba out-of-bounds. Ignore read request */ - if (lba >= pblk->rl.nr_secs) { - WARN(1, "pblk: read lba out of bounds\n"); - return; - } pblk_lookup_l2p_seq(pblk, &ppa, lba, 1); @@ -309,14 +295,19 @@ static void pblk_read_rq(struct pblk *pblk, struct nvm_rq *rqd, int pblk_submit_read(struct pblk *pblk, struct bio *bio) { struct nvm_tgt_dev *dev = pblk->dev; + sector_t blba = pblk_get_lba(bio); unsigned int nr_secs = pblk_get_secs(bio); struct nvm_rq *rqd; unsigned long read_bitmap; /* Max 64 ppas per request */ unsigned int bio_init_idx; int ret = NVM_IO_ERR; - if (nr_secs > PBLK_MAX_REQ_ADDRS) + /* logic error: lba out-of-bounds. Ignore read request */ + if (blba >= pblk->rl.nr_secs || nr_secs > PBLK_MAX_REQ_ADDRS) { + WARN(1, "pblk: read lba out of bounds (lba:%llu, nr:%d)\n", + (unsigned long long)blba, nr_secs); return NVM_IO_ERR; + } bitmap_zero(&read_bitmap, nr_secs); @@ -348,9 +339,9 @@ int pblk_submit_read(struct pblk *pblk, struct bio *bio) rqd->ppa_list = rqd->meta_list + pblk_dma_meta_size; rqd->dma_ppa_list = rqd->dma_meta_list + pblk_dma_meta_size; - pblk_read_ppalist_rq(pblk, rqd, &read_bitmap); + pblk_read_ppalist_rq(pblk, rqd, blba, &read_bitmap); } else { - pblk_read_rq(pblk, rqd, &read_bitmap); + pblk_read_rq(pblk, rqd, blba, &read_bitmap); } bio_get(bio); -- 2.7.4