09-03-2007
File systems don't change size as data is added to them or deleted from them. Rather space back and forth between that states "used" and "free". Mount points that are in use never change size and should be rather small if created correctly. And directories grow but do not shrink. Is is not clear what are claiming here. Post the commands you are using together with the output that you see.
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LEARN ABOUT NETBSD
stack_grow
STACK(9) BSD Kernel Developer's Manual STACK(9)
NAME
STACK -- stack macros
SYNOPSIS
#include <sys/param.h>
type
STACK_ALLOC(sp, size);
type
STACK_MAX(sp, size);
type
STACK_ALIGN(sp, bytes);
type
STACK_GROW(sp, size);
type
STACK_SHRINK(sp, size);
DESCRIPTION
A stack is an area of memory with a fixed origin but with a variable size. A stack pointer points to the most recently referenced location
on the stack. Initially, when the stack has a size of zero, the stack pointer points to the origin of the stack. When data items are added
to the stack, the stack pointer moves away from the origin.
The STACK_ALLOC() macro returns a pointer to allocated stack space of some size. Given the returned pointer sp and size, STACK_MAX() returns
the maximum stack address of the allocated stack space. The STACK_ALIGN() macro can be used to align the stack pointer sp by the specified
amount of bytes.
Two basic operations are common to all stacks: a data item is added (``push'') to the location pointed by sp or a data item is removed
(``pop'') from the stack. The stack pointer must be subsequently adjusted by the size of the data item. The STACK_GROW() and STACK_SHRINK()
macros adjust the stack pointer sp by given size.
A stack may grow either up or down. The described macros take this into account by using the __MACHINE_STACK_GROWS_UP preprocessor define.
SEE ALSO
param(3), queue(3)
BSD
April 8, 2011 BSD