[PATCH v2 00/20] fscache,erofs: fscache-based demand-read semantics
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:
>> 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.
More information about the Linux-erofs