X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=doc%2Freference.texi;h=bcdcd63324bca3b01efc4c32ba796de1bb9c1d0b;hb=ed04361f6ec91e4f0db1550c2cc487a461b2d17b;hp=c44988cf810b6e59a5f0d715b20fdd23f3779697;hpb=53a7f5d0952a4595f252247f5ee3d017468eb57e;p=pintos-anon

diff --git a/doc/reference.texi b/doc/reference.texi
index c44988c..bcdcd63 100644
--- a/doc/reference.texi
+++ b/doc/reference.texi
@@ -100,7 +100,7 @@ arranged to begin with the assembly module
 @func{main}, which never returns.
 
 There's one more trick: the Pintos kernel command line
-is in stored the boot loader.  The @command{pintos} program actually
+is stored in the boot loader.  The @command{pintos} program actually
 modifies a copy of the boot loader on disk each time it runs the kernel,
 putting
 in whatever command line arguments the user supplies to the kernel,
@@ -148,7 +148,7 @@ prerequisite for acquiring a lock, and lock acquisition in turn is
 important to other Pintos subsystems.  Then we initialize the console
 and print a startup message to the console.
 
-The next block of functions we call initialize the kernel's memory
+The next block of functions we call initializes the kernel's memory
 system.  @func{palloc_init} sets up the kernel page allocator, which
 doles out memory one or more pages at a time (@pxref{Page Allocator}).
 @func{malloc_init} sets
@@ -683,7 +683,7 @@ implementation in @file{lib/kernel/list.c}.
 
 A @dfn{lock} is like a semaphore with an initial value of 1
 (@pxref{Semaphores}).  A lock's equivalent of ``up'' is called
-``acquire'', and the ``down'' operation is called ``release''.
+``release'', and the ``down'' operation is called ``acquire''.
 
 Compared to a semaphore, a lock has one added restriction: only the
 thread that acquires a lock, called the lock's ``owner'', is allowed to