From 5a13a5416e2442d8048b132c1423ab7c35c58066 Mon Sep 17 00:00:00 2001
From: Andreas Kling <awesomekling@gmail.com>
Date: Wed, 15 Jan 2020 22:09:45 +0100
Subject: [PATCH] Kernel: Avoid an extra call to read_bytes() in
 Inode::read_entire()

If we slurp up the entire inode in a single read_bytes(), no need to
call read_bytes() again.
---
 Kernel/FileSystem/Inode.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/Kernel/FileSystem/Inode.cpp b/Kernel/FileSystem/Inode.cpp
index 64c407ad07..e04de87fea 100644
--- a/Kernel/FileSystem/Inode.cpp
+++ b/Kernel/FileSystem/Inode.cpp
@@ -45,6 +45,8 @@ ByteBuffer Inode::read_entire(FileDescription* descriptor) const
             break;
         builder.append((const char*)buffer, nread);
         offset += nread;
+        if (nread < (ssize_t)sizeof(buffer))
+            break;
     }
     if (nread < 0) {
         kprintf("Inode::read_entire: ERROR: %d\n", nread);