Re: USB mass storage and ARM cache coherency

[Ming Lei]

2010/2/2 Catalin Marinas <catalin.marinas@xxxxxxx>:

> In the iSCSI case, does the HCD driver write directly to a page cache
> page? Or it just fills in network packets that are copied to page cache
> pages by the iSCSI code (sorry, I'm not familiar with this part of the
> kernel). If the latter, the cache flushing in the HCD driver would not
> help and it needs to be done in the iSCSI code.

So we should flush dcache page in the place where the user mapped
page is copied to, instead of low level driver which does not do such
thing always.

-- 
Lei Ming
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