f2fs: fix sparse warnings

f2fs contained a number of endianness conversion bugs.

Also, one function should have been 'static'.

Found with sparse by running 'make C=2 CF=-D__CHECK_ENDIAN__ fs/f2fs/'

Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

fs/f2fs/node.c

@@ -270,8 +270,9 @@ static void cache_nat_entry(struct f2fs_sb_info *sbi, nid_t nid,
 		e = grab_nat_entry(nm_i, nid);
 		node_info_from_raw_nat(&e->ni, ne);
 	} else {
-		f2fs_bug_on(sbi, nat_get_ino(e) != ne->ino ||
-				nat_get_blkaddr(e) != ne->block_addr ||
+		f2fs_bug_on(sbi, nat_get_ino(e) != le32_to_cpu(ne->ino) ||
+				nat_get_blkaddr(e) !=
+					le32_to_cpu(ne->block_addr) ||
 				nat_get_version(e) != ne->version);
 	}
 }