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authorJavier González <jg@lightnvm.io>2016-05-06 20:03:15 +0200
committerJens Axboe <axboe@fb.com>2016-05-06 12:51:10 -0600
commitcca87bc9d359f1a03ac34ca095343d1bfa2e6b15 (patch)
treedcfc7dacb3b56ae987aa764008add0f499ff4ce9 /drivers/lightnvm
parentb86d8d363ece8fb9a7ec7e951c7f041f47f0f552 (diff)
downloadop-kernel-dev-cca87bc9d359f1a03ac34ca095343d1bfa2e6b15.zip
op-kernel-dev-cca87bc9d359f1a03ac34ca095343d1bfa2e6b15.tar.gz
lightnvm: do not assume sequential lun alloc.
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@cnexlabs.com> Signed-off-by: Matias Bjørling <m@bjorling.me> Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'drivers/lightnvm')
-rw-r--r--drivers/lightnvm/rrpc.c5
1 files 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);
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