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authorWenwei Tao <ww.tao0320@gmail.com>2015-12-06 11:25:45 +0100
committerJens Axboe <axboe@fb.com>2015-12-07 09:14:19 -0700
commite9b76a80f1f165cb031f62128dc07d219e29f5a3 (patch)
tree65a686e68c156534c4be0dc57fc84a6457db0c1a /drivers/lightnvm
parentd3d1a43842077c53e22dedaebfe7cb52022b18e1 (diff)
downloadblackbird-op-linux-e9b76a80f1f165cb031f62128dc07d219e29f5a3.tar.gz
blackbird-op-linux-e9b76a80f1f165cb031f62128dc07d219e29f5a3.zip
lightnvm: refactor spin_unlock in gennvm_get_blk
The spin_unlock is duplicated multiple times. Jump to a single unlock to improve the code flow. Signed-off-by: Wenwei Tao <ww.tao0320@gmail.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/gennvm.c7
1 files changed, 2 insertions, 5 deletions
diff --git a/drivers/lightnvm/gennvm.c b/drivers/lightnvm/gennvm.c
index 35dde84b71e9..ce6025487a5c 100644
--- a/drivers/lightnvm/gennvm.c
+++ b/drivers/lightnvm/gennvm.c
@@ -262,14 +262,11 @@ static struct nvm_block *gennvm_get_blk(struct nvm_dev *dev,
if (list_empty(&lun->free_list)) {
pr_err_ratelimited("gennvm: lun %u have no free pages available",
lun->vlun.id);
- spin_unlock(&vlun->lock);
goto out;
}
- while (!is_gc && lun->vlun.nr_free_blocks < lun->reserved_blocks) {
- spin_unlock(&vlun->lock);
+ if (!is_gc && lun->vlun.nr_free_blocks < lun->reserved_blocks)
goto out;
- }
blk = list_first_entry(&lun->free_list, struct nvm_block, list);
list_move_tail(&blk->list, &lun->used_list);
@@ -278,8 +275,8 @@ static struct nvm_block *gennvm_get_blk(struct nvm_dev *dev,
lun->vlun.nr_free_blocks--;
lun->vlun.nr_inuse_blocks++;
- spin_unlock(&vlun->lock);
out:
+ spin_unlock(&vlun->lock);
return blk;
}
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