Correct the wrong spelling of put_pgdir

labcodes_answer/lab5_result/kern/process/proc.c

@@ -647,7 +647,7 @@ bad_mm:
     goto out;
 }
 
-// do_execve - call exit_mmap(mm)&pug_pgdir(mm) to reclaim memory space of current process
+// do_execve - call exit_mmap(mm)&put_pgdir(mm) to reclaim memory space of current process
 //           - call load_icode to setup new memory space accroding binary prog.
 int
 do_execve(const char *name, size_t len, unsigned char *binary, size_t size) {

labcodes_answer/lab6_result/kern/process/proc.c

@@ -653,7 +653,7 @@ bad_mm:
     goto out;
 }
 
-// do_execve - call exit_mmap(mm)&pug_pgdir(mm) to reclaim memory space of current process
+// do_execve - call exit_mmap(mm)&put_pgdir(mm) to reclaim memory space of current process
 //           - call load_icode to setup new memory space accroding binary prog.
 int
 do_execve(const char *name, size_t len, unsigned char *binary, size_t size) {

labcodes_answer/lab7_result/kern/process/proc.c

@@ -667,7 +667,7 @@ bad_mm:
     goto out;
 }
 
-// do_execve - call exit_mmap(mm)&pug_pgdir(mm) to reclaim memory space of current process
+// do_execve - call exit_mmap(mm)&put_pgdir(mm) to reclaim memory space of current process
 //           - call load_icode to setup new memory space accroding binary prog.
 int
 do_execve(const char *name, size_t len, unsigned char *binary, size_t size) {

labcodes_answer/lab8_result/kern/process/proc.c

@@ -801,7 +801,7 @@ failed_cleanup:
     return ret;
 }
 
-// do_execve - call exit_mmap(mm)&pug_pgdir(mm) to reclaim memory space of current process
+// do_execve - call exit_mmap(mm)&put_pgdir(mm) to reclaim memory space of current process
 //           - call load_icode to setup new memory space accroding binary prog.
 int
 do_execve(const char *name, int argc, const char **argv) {