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lightnvm: pblk: expose max sec per write on sysfs

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Allow to configure the number of maximum sectors per write command
through sysfs. This makes it easier to tune write command sizes for
different controller configurations.

Signed-off-by: Javier González <javier@cnexlabs.com>
Signed-off-by: Matias Bjørling <matias@cnexlabs.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Javier González
2017-06-26 11:57:14 +02:00
committed by Jens Axboe
parent db7ada33cd
commit c2e9f5d457
4 changed files with 48 additions and 1 deletions
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2
drivers/lightnvm/pblk-init.c
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@@ -250,6 +250,8 @@ static int pblk_core_init(struct pblk *pblk)
pblk->pgs_in_buffer = NVM_MEM_PAGE_WRITE * geo->sec_per_pg *
geo->nr_planes * geo->nr_luns;
pblk_set_sec_per_write(pblk, pblk->min_write_pgs);
if (pblk->max_write_pgs > PBLK_MAX_REQ_ADDRS) {
pr_err("pblk: cannot support device max_phys_sect\n");
return -EINVAL;