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| author |   Igor Konopko <igor.j.konopko@intel.com> | 2019-05-04 20:37:48 +0200 |
|---|---|---|
| committer |   Jens Axboe <axboe@kernel.dk> | 2019-05-06 10:19:16 -0600 |
| commit | 847a3a2788c57454ab715e07777431cc5fc76f48 (patch) | |
| tree | 548099a55f3ed3b21925851f1ed91dbb40deb69d /drivers/lightnvm/pblk-read.c | |
| parent | lightnvm: pblk: rollback on error during gc read (diff) | |
| download | wireguard-linux-847a3a2788c57454ab715e07777431cc5fc76f48.tar.xz wireguard-linux-847a3a2788c57454ab715e07777431cc5fc76f48.zip | |
lightnvm: pblk: reduce L2P memory footprint
Currently L2P map size is calculated based on the total number of
available sectors, which is redundant, since it contains mapping for
overprovisioning as well (11% by default).
Change this size to the real capacity and thus reduce the memory
footprint significantly - with default op value it is approx.
110MB of DRAM less for every 1TB of media.
Signed-off-by: Igor Konopko <igor.j.konopko@intel.com>
Reviewed-by: Hans Holmberg <hans.holmberg@cnexlabs.com>
Reviewed-by: Javier González <javier@javigon.com>
Signed-off-by: Matias Bjørling <mb@lightnvm.io>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'drivers/lightnvm/pblk-read.c')
| -rw-r--r-- | drivers/lightnvm/pblk-read.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/lightnvm/pblk-read.c b/drivers/lightnvm/pblk-read.c index 0b7d5fb4548d..b8eb6bdb983b 100644 --- a/drivers/lightnvm/pblk-read.c +++ b/drivers/lightnvm/pblk-read.c @@ -568,7 +568,7 @@ static int read_rq_gc(struct pblk *pblk, struct nvm_rq *rqd, goto out; /* logic error: lba out-of-bounds */ - if (lba >= pblk->rl.nr_secs) { + if (lba >= pblk->capacity) { WARN(1, "pblk: read lba out of bounds\n"); goto out; } |