[PATCH v2 00/20] fscache,erofs: fscache-based demand-read semantics

JeffleXu jefflexu at linux.alibaba.com
Thu Jan 27 18:07:00 AEDT 2022

On 1/26/22 4:51 PM, David Howells wrote:
> JeffleXu <jefflexu at linux.alibaba.com> wrote:
>> "/path/to/file+offset"
>> 		^
>> Besides, what does the 'offset' mean?
> Assuming you're storing multiple erofs files within the same backend file, you
> need to tell the the cache backend how to find the data.  Assuming the erofs
> data is arranged such that each erofs file is a single contiguous region, then
> you need a pathname and a file offset to find one of them.

Alright. In fact one erofs file can contain multiple chunks, which can
correspond to different backing blob files. Thus currently I will use
fscache_read() directly, to push this feature forward.

Thanks a lot.


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