Module align 

O_DIRECT alignment utilities.

O_DIRECT requires that:

• The file offset is aligned to the logical block size (typically 512 or 4096).
• The memory buffer address is aligned to the logical block size.
• The I/O size is a multiple of the logical block size.

This module provides an aligned buffer type that satisfies these constraints.

Structs

AlignedBuf

An aligned byte buffer suitable for O_DIRECT I/O.

Constants

DEFAULT_ALIGNMENT

Default alignment for O_DIRECT I/O (4 KiB).

Functions

is_aligned

Check if a value is aligned to the given alignment.

round_up

Round value up to the next multiple of align (which must be a power of two).