[Feature]add MT2731_MP2_MR2_SVN388 baseline version
Change-Id: Ief04314834b31e27effab435d3ca8ba33b499059
diff --git a/src/kernel/linux/v4.14/fs/efs/file.c b/src/kernel/linux/v4.14/fs/efs/file.c
new file mode 100644
index 0000000..9e641da
--- /dev/null
+++ b/src/kernel/linux/v4.14/fs/efs/file.c
@@ -0,0 +1,57 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * file.c
+ *
+ * Copyright (c) 1999 Al Smith
+ *
+ * Portions derived from work (c) 1995,1996 Christian Vogelgsang.
+ */
+
+#include <linux/buffer_head.h>
+#include "efs.h"
+
+int efs_get_block(struct inode *inode, sector_t iblock,
+ struct buffer_head *bh_result, int create)
+{
+ int error = -EROFS;
+ long phys;
+
+ if (create)
+ return error;
+ if (iblock >= inode->i_blocks) {
+#ifdef DEBUG
+ /*
+ * i have no idea why this happens as often as it does
+ */
+ pr_warn("%s(): block %d >= %ld (filesize %ld)\n",
+ __func__, block, inode->i_blocks, inode->i_size);
+#endif
+ return 0;
+ }
+ phys = efs_map_block(inode, iblock);
+ if (phys)
+ map_bh(bh_result, inode->i_sb, phys);
+ return 0;
+}
+
+int efs_bmap(struct inode *inode, efs_block_t block) {
+
+ if (block < 0) {
+ pr_warn("%s(): block < 0\n", __func__);
+ return 0;
+ }
+
+ /* are we about to read past the end of a file ? */
+ if (!(block < inode->i_blocks)) {
+#ifdef DEBUG
+ /*
+ * i have no idea why this happens as often as it does
+ */
+ pr_warn("%s(): block %d >= %ld (filesize %ld)\n",
+ __func__, block, inode->i_blocks, inode->i_size);
+#endif
+ return 0;
+ }
+
+ return efs_map_block(inode, block);
+}