From fb9aa961b749ffa339eb9cf219b9d84bbcd154ff Mon Sep 17 00:00:00 2001
From: Justin Weiss <justin@justinweiss.com>
Date: Sun, 30 Aug 2020 11:23:58 -0700
Subject: [PATCH] [3DS] Increase file buffer size and savestate chunk size

---
 libretro-common/vfs/vfs_implementation.c | 9 ++++++++-
 tasks/task_save.c                        | 2 +-
 2 files changed, 9 insertions(+), 2 deletions(-)

diff --git a/libretro-common/vfs/vfs_implementation.c b/libretro-common/vfs/vfs_implementation.c
index 96390a1d1c..637b873d99 100644
--- a/libretro-common/vfs/vfs_implementation.c
+++ b/libretro-common/vfs/vfs_implementation.c
@@ -446,7 +446,14 @@ libretro_vfs_implementation_file *retro_vfs_file_open_impl(
        */
       /* TODO: this is only useful for a few platforms, 
        * find which and add ifdef */
-#if !defined(PSP)
+#if defined(_3DS)
+      if (stream->scheme != VFS_SCHEME_CDROM)
+      {
+         stream->buf = (char*)calloc(1, 0x10000);
+         if (stream->fp)
+            setvbuf(stream->fp, stream->buf, _IOFBF, 0x10000);
+      }
+#elif !defined(PSP)
       if (stream->scheme != VFS_SCHEME_CDROM)
       {
          stream->buf = (char*)calloc(1, 0x4000);
diff --git a/tasks/task_save.c b/tasks/task_save.c
index 7e95caba7d..d46b39ce2b 100644
--- a/tasks/task_save.c
+++ b/tasks/task_save.c
@@ -58,7 +58,7 @@
 #include "../managers/cheat_manager.h"
 #endif
 
-#ifdef HAVE_LIBNX
+#if defined(HAVE_LIBNX) || defined(_3DS)
 #define SAVE_STATE_CHUNK 4096 * 10
 #else
 #define SAVE_STATE_CHUNK 4096