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Block layer discard requests

Posted Aug 14, 2008 11:24 UTC (Thu) by willy (subscriber, #9762)
In reply to: Block layer discard requests by i3839
Parent article: Block layer discard requests

You're correct that wear-levelling reuses existing blocks.  This is about telling the
flash-based device which blocks aren't used any more and hence don't need to be copied.  The
filesystem knows when a block isn't used any more, it just needs a way to tell the flash
device.

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Posted Aug 14, 2008 14:38 UTC (Thu) by i3839 (guest, #31386) [Link]

Ah, okay, that makes sense.