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authorWenwei Tao <ww.tao0320@gmail.com>2016-01-12 07:49:27 +0100
committerJens Axboe <axboe@fb.com>2016-01-12 08:21:17 -0700
commit4b79beb4c36d697e940e9f70d72399c71230a418 (patch)
treedfb308f42e9bdb7c5572c4df3065034107de4ba1 /drivers/lightnvm/rrpc.c
parent556755e941837ebc4b4859dd7f74f2ed2dd00fc7 (diff)
downloadop-kernel-dev-4b79beb4c36d697e940e9f70d72399c71230a418.zip
op-kernel-dev-4b79beb4c36d697e940e9f70d72399c71230a418.tar.gz
lightnvm: move the pages per block check out of the loop
There is no need to check whether dev's pages per block is beyond rrpc support every time we init a lun, we only need to check it once before enter the lun init loop. 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/rrpc.c')
-rw-r--r--drivers/lightnvm/rrpc.c11
1 files changed, 5 insertions, 6 deletions
diff --git a/drivers/lightnvm/rrpc.c b/drivers/lightnvm/rrpc.c
index 745acd9..ec7aacf 100644
--- a/drivers/lightnvm/rrpc.c
+++ b/drivers/lightnvm/rrpc.c
@@ -1114,6 +1114,11 @@ static int rrpc_luns_init(struct rrpc *rrpc, int lun_begin, int lun_end)
struct rrpc_lun *rlun;
int i, j;
+ if (dev->pgs_per_blk > MAX_INVALID_PAGES_STORAGE * BITS_PER_LONG) {
+ pr_err("rrpc: number of pages per block too high.");
+ return -EINVAL;
+ }
+
spin_lock_init(&rrpc->rev_lock);
rrpc->luns = kcalloc(rrpc->nr_luns, sizeof(struct rrpc_lun),
@@ -1125,12 +1130,6 @@ static int rrpc_luns_init(struct rrpc *rrpc, int lun_begin, int lun_end)
for (i = 0; i < rrpc->nr_luns; i++) {
struct nvm_lun *lun = dev->mt->get_lun(dev, lun_begin + i);
- if (dev->pgs_per_blk >
- MAX_INVALID_PAGES_STORAGE * BITS_PER_LONG) {
- pr_err("rrpc: number of pages per block too high.");
- goto err;
- }
-
rlun = &rrpc->luns[i];
rlun->rrpc = rrpc;
rlun->parent = lun;
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