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| author | Igor Konopko <igor.j.konopko@intel.com> | 2018-12-11 22:16:24 +0300 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2018-12-11 22:22:35 +0300 |
| commit | 24828d0536bbedc9b265f2b01ffca99de3f6a7c7 (patch) | |
| tree | bf902aa63b71543db101677c5bfef73b7d757fee /include/linux/lightnvm.h | |
| parent | faa79f27f0a46cd6c3ac3de5e7f3e142598217fc (diff) | |
| download | linux-24828d0536bbedc9b265f2b01ffca99de3f6a7c7.tar.xz | |
lightnvm: dynamic DMA pool entry size
Currently lightnvm and pblk uses single DMA pool, for which the entry
size always is equal to PAGE_SIZE. The contents of each entry allocated
from the DMA pool consists of a PPA list (8bytes * 64), leaving
56bytes * 64 space for metadata. Since the metadata field can be bigger,
such as 128 bytes, the static size does not cover this use-case.
This patch adds support for I/O metadata above 56 bytes by changing DMA
pool size based on device meta size and allows pblk to use OOB metadata
>=16B.
Reviewed-by: Javier González <javier@cnexlabs.com>
Signed-off-by: Igor Konopko <igor.j.konopko@intel.com>
Signed-off-by: Matias Bjørling <mb@lightnvm.io>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'include/linux/lightnvm.h')
| -rw-r--r-- | include/linux/lightnvm.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/linux/lightnvm.h b/include/linux/lightnvm.h index 2fdeac1a420d..7afedaddbd15 100644 --- a/include/linux/lightnvm.h +++ b/include/linux/lightnvm.h @@ -90,7 +90,7 @@ 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_sync_fn)(struct nvm_dev *, struct nvm_rq *); -typedef void *(nvm_create_dma_pool_fn)(struct nvm_dev *, char *); +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, dma_addr_t *); |