Messages in this thread | | | Date | Thu, 27 Jan 2022 15:07:00 +0800 | Subject | Re: [PATCH v2 00/20] fscache,erofs: fscache-based demand-read semantics | From | JeffleXu <> |
| |
On 1/26/22 4:51 PM, David Howells wrote: > JeffleXu <jefflexu@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.
-- Thanks, Jeffle
| |