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Date: Mon, 2 May 2016 10:22:41 +0200 From: Matias Bjørling <mb@...htnvm.io> To: Javier González <jg@...htnvm.io> Cc: linux-kernel@...r.kernel.org, linux-block@...r.kernel.org, Javier González <javier@...xlabs.com> Subject: Re: [PATCH] lightnvm: do not assume sequential lun alloc. On 04/29/2016 04:46 PM, Javier González wrote: > When doing GC, rrpc calculates the physical LUN to which the rrpc block > belongs too. This calculation is based on the assumption that LUNs are > assigned sequentially to the LUN list. Use the reference to the LUN > instead. This saves us the calculation and allows us to align LUNs in a > different manner to, for example, take advantage of devide parallelism. > > Signed-off-by: Javier González <javier@...xlabs.com> > --- > drivers/lightnvm/rrpc.c | 5 ++--- > 1 file changed, 2 insertions(+), 3 deletions(-) > > diff --git a/drivers/lightnvm/rrpc.c b/drivers/lightnvm/rrpc.c > index ffcfee6..48862ead 100644 > --- a/drivers/lightnvm/rrpc.c > +++ b/drivers/lightnvm/rrpc.c > @@ -405,9 +405,8 @@ static void rrpc_block_gc(struct work_struct *work) > ws_gc); > struct rrpc *rrpc = gcb->rrpc; > struct rrpc_block *rblk = gcb->rblk; > + struct rrpc_lun *rlun = rblk->rlun; > struct nvm_dev *dev = rrpc->dev; > - struct nvm_lun *lun = rblk->parent->lun; > - struct rrpc_lun *rlun = &rrpc->luns[lun->id - rrpc->lun_offset]; > > mempool_free(gcb, rrpc->gcb_pool); > pr_debug("nvm: block '%lu' being reclaimed\n", rblk->parent->id); > @@ -508,9 +507,9 @@ static void rrpc_gc_queue(struct work_struct *work) > ws_gc); > struct rrpc *rrpc = gcb->rrpc; > struct rrpc_block *rblk = gcb->rblk; > + struct rrpc_lun *rlun = rblk->rlun; > struct nvm_lun *lun = rblk->parent->lun; > struct nvm_block *blk = rblk->parent; > - struct rrpc_lun *rlun = &rrpc->luns[lun->id - rrpc->lun_offset]; > > spin_lock(&rlun->lock); > list_add_tail(&rblk->prio, &rlun->prio_list); > Thanks Javier. Applied for 4.7.
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