On Fri, 25 Mar 2022 at 14:23, Jiachen Zhang <zhangjiachen.jaycee@xxxxxxxxxxxxx> wrote: > > Hi all, > > This RFC patch implements attr cache and data cache revalidation for > fuse writeback_cache mode in kernel. Looking forward to any suggestions > or comments on this feature. Quick question before going into the details: could the cache revalidation be done in the userspace filesystem instead, which would set/clear FOPEN_KEEP_CACHE based on the result of the revalidation? Thanks, Miklos