dm-cache: dirty state of blocks in writethrough mode

["Vijarnia, Anil" <Anil.Vijarnia@xxxxxxxxxx>]

Hello,

In Documentation/cache.txt, section ‘Updating on-disk metadata’ mentions that “If the system crashes all cache blocks will be assumed dirty when restarted”. 

I am assuming that the above line is relevant for writeback mode only, and in writethrough mode the cache will always be coherent after a crash. 

Can someone confirm/reject this assumption?

Thanks

 

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