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lightnvm: pblk: fix incorrect min_write_pgs

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[ Upstream commit 8bbd45d02a118cbefdf4e1a6274bd965a6aa3c59 ]

The calculation of pblk->min_write_pgs should only use the optimal
write size attribute provided by the drive, it does not correlate to
the memory page size of the system, which can be smaller or larger
than the LBA size reported.

Signed-off-by: Matias Bjørling <mb@lightnvm.io>
Reviewed-by: Javier González <javier@cnexlabs.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Matias Bjørling 2018-10-09 13:11:38 +02:00 committed by Greg Kroah-Hartman
parent ced6b5dae1
commit c7e49f7315
1 changed files with 1 additions and 1 deletions
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2
drivers/lightnvm/pblk-init.c
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@ -371,7 +371,7 @@ static int pblk_core_init(struct pblk *pblk)
atomic64_set(&pblk->nr_flush, 0);
pblk->nr_flush_rst = 0;
pblk->min_write_pgs = geo->ws_opt * (geo->csecs / PAGE_SIZE);
pblk->min_write_pgs = geo->ws_opt;
max_write_ppas = pblk->min_write_pgs * geo->all_luns;
pblk->max_write_pgs = min_t(int, max_write_ppas, NVM_MAX_VLBA);
pblk_set_sec_per_write(pblk, pblk->min_write_pgs);