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authorMatias Bjørling <mb@lightnvm.io>2018-07-13 10:48:40 +0200
committerJens Axboe <axboe@kernel.dk>2018-07-13 08:14:39 -0600
commit921aebfac0871e8212913039d5241c0b3527eddb (patch)
treec513e0b6b4196b84e56a1374f252cc5fa63fc91d /drivers/lightnvm
parent242e461fb628bb63763e0bb2788d52ea054f8721 (diff)
downloadblackbird-obmc-linux-921aebfac0871e8212913039d5241c0b3527eddb.tar.gz
blackbird-obmc-linux-921aebfac0871e8212913039d5241c0b3527eddb.zip
lightnvm: pblk: fix read_bitmap for 32bit archs
If using pblk on a 32bit architecture, and there is a need to perform a partial read, the partial read bitmap will only have allocated 32 entries, where as 64 are needed. Make sure that the read_bitmap is initialized to 64bits on 32bit architectures as well. Signed-off-by: Matias Bjørling <mb@lightnvm.io> Reviewed-by: Igor Konopko <igor.j.konopko@intel.com> Reviewed-by: Javier González <javier@cnexlabs.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'drivers/lightnvm')
-rw-r--r--drivers/lightnvm/pblk-read.c14
1 files changed, 7 insertions, 7 deletions
diff --git a/drivers/lightnvm/pblk-read.c b/drivers/lightnvm/pblk-read.c
index 6e93c489ce57..bcfc6ea86e9d 100644
--- a/drivers/lightnvm/pblk-read.c
+++ b/drivers/lightnvm/pblk-read.c
@@ -401,7 +401,7 @@ int pblk_submit_read(struct pblk *pblk, struct bio *bio)
struct pblk_g_ctx *r_ctx;
struct nvm_rq *rqd;
unsigned int bio_init_idx;
- unsigned long read_bitmap; /* Max 64 ppas per request */
+ DECLARE_BITMAP(read_bitmap, NVM_MAX_VLBA);
int ret = NVM_IO_ERR;
/* logic error: lba out-of-bounds. Ignore read request */
@@ -413,7 +413,7 @@ int pblk_submit_read(struct pblk *pblk, struct bio *bio)
generic_start_io_acct(q, READ, bio_sectors(bio), &pblk->disk->part0);
- bitmap_zero(&read_bitmap, nr_secs);
+ bitmap_zero(read_bitmap, nr_secs);
rqd = pblk_alloc_rqd(pblk, PBLK_READ);
@@ -444,19 +444,19 @@ 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, bio, blba, &read_bitmap);
+ pblk_read_ppalist_rq(pblk, rqd, bio, blba, read_bitmap);
} else {
- pblk_read_rq(pblk, rqd, bio, blba, &read_bitmap);
+ pblk_read_rq(pblk, rqd, bio, blba, read_bitmap);
}
- if (bitmap_full(&read_bitmap, nr_secs)) {
+ if (bitmap_full(read_bitmap, nr_secs)) {
atomic_inc(&pblk->inflight_io);
__pblk_end_io_read(pblk, rqd, false);
return NVM_IO_DONE;
}
/* All sectors are to be read from the device */
- if (bitmap_empty(&read_bitmap, rqd->nr_ppas)) {
+ if (bitmap_empty(read_bitmap, rqd->nr_ppas)) {
struct bio *int_bio = NULL;
/* Clone read bio to deal with read errors internally */
@@ -480,7 +480,7 @@ int pblk_submit_read(struct pblk *pblk, struct bio *bio)
/* The read bio request could be partially filled by the write buffer,
* but there are some holes that need to be read from the drive.
*/
- return pblk_partial_read(pblk, rqd, bio, bio_init_idx, &read_bitmap);
+ return pblk_partial_read(pblk, rqd, bio, bio_init_idx, read_bitmap);
fail_rqd_free:
pblk_free_rqd(pblk, rqd, PBLK_READ);
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