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Revision eabba580

IDeabba580e6bb8d6b969c1368c6f90d72b4cde4f4

Added by Stefan Hajnoczi over 10 years ago

qed: Read/write support

This patch implements the read/write state machine. Operations are
fully asynchronous and multiple operations may be active at any time.

Allocating writes lock tables to ensure metadata updates do not
interfere with each other. If two allocating writes need to update the
same L2 table they will run sequentially. If two allocating writes need
to update different L2 tables they will run in parallel.

Signed-off-by: Stefan Hajnoczi <>
Signed-off-by: Kevin Wolf <>

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