summaryrefslogtreecommitdiff
path: root/include/linux/lightnvm.h
diff options
context:
space:
mode:
authorIgor Konopko <igor.j.konopko@intel.com>2018-12-11 22:16:24 +0300
committerJens Axboe <axboe@kernel.dk>2018-12-11 22:22:35 +0300
commit24828d0536bbedc9b265f2b01ffca99de3f6a7c7 (patch)
treebf902aa63b71543db101677c5bfef73b7d757fee /include/linux/lightnvm.h
parentfaa79f27f0a46cd6c3ac3de5e7f3e142598217fc (diff)
downloadlinux-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.h2
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 *);