readlink() doesn't work properly when FUSE_CACHE_SYMLINKS is enabled

[KongzhangHao]

I found that after a symlink is created, for example with command ln -s name link, the command ls -la will show the symlink as path -> '' rather than path -> name. I removed line 754 of file /src/raw/session.rs (i.e., reply_flags |= FUSE_CACHE_SYMLINKS), the symlink can then be created and read normally. What would be the possible cause of this? I'm also investigating it.

[Sherlock-Holo]

how long the ttl you set for the symlink? I am not sure but may be you can try reduce the ttl and check if the problem still exist?