f2fs: check nid == 0 in add_free_nid
It is more obvious that add_free_nid checks whether the free nid is zero or not.
Reviewed-by: Namjae Jeon <namjae.jeon@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
diff --git a/fs/f2fs/node.c b/fs/f2fs/node.c
index a0aa044..c8f48d4 100644
--- a/fs/f2fs/node.c
+++ b/fs/f2fs/node.c
@@ -1245,6 +1245,10 @@
if (nm_i->fcnt > 2 * MAX_FREE_NIDS)
return 0;
+
+ /* 0 nid should not be used */
+ if (nid == 0)
+ return 0;
retry:
i = kmem_cache_alloc(free_nid_slab, GFP_NOFS);
if (!i) {
@@ -1286,10 +1290,6 @@
int fcnt = 0;
int i;
- /* 0 nid should not be used */
- if (start_nid == 0)
- ++start_nid;
-
i = start_nid % NAT_ENTRY_PER_BLOCK;
for (; i < NAT_ENTRY_PER_BLOCK; i++, start_nid++) {