Bob - the raw-"write"-er
Originally written by
- Bob is a write to a block device.
- Bob, unlike Alice, always writes onto an existing part of the device:
- No block allocations needed.
- Bob could be a direct operation - waiting until he gets to disk-haven...
- ...or an un-synced operation - getting into the buffer cache is enough.
- Note: mixing I/O via the cache and bypassing the cache - is a bad idea.