Opened 14 years ago

Closed 14 years ago

#12 closed enhancement (fixed)

Make buffer-cache a Block device

Reported by: Nicolas Pouillon Owned by: Nicolas Pouillon
Priority: minor Milestone:
Component: drivers Keywords:
Cc:

Description

Block device API

Add a flag argument in requests in order to be able to optimize buffer-cache operations, we could imagine:

  • nocache attribute
  • some hints about the usage of blocks (write only, read once, …)

This could allow not to cache certain blocks because upper layer knows they wont be reused, and they would clean the cache, which is not wanted

Buffer cache implementation as a block-device

  • A double struct:
    • a linked-link implementing a LRU
    • a hash-table indexed by LBA for lookups
  • Have a dirty flag

Change History (2)

comment:1 Changed 14 years ago by Nicolas Pouillon

Component: libvfs → drivers

comment:2 Changed 14 years ago by Nicolas Pouillon

Resolution: → fixed
Status: new → closed

Done as of [1263]

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