passthrough_ll: set correct keep_cache flag in opendir (#1083)

In cache=always mode, set keep_cache flag in opendir(), same as done
in open() and same as passthrough_hp does in opendir().

In the default cache=auto mode, use readdir cache, but do not set
keep_cache, same as regular files use page cache for an open file,
but do not keep_cache for a new open.

Note that passthrough_hp by default behaves the same as passthrough_ll
cache=always mode and supports the cache=never mode with --nocache, but
it does not support the equivalent of cache=auto mode.

Signed-off-by: Amir Goldstein <amir73il@gmail.com>

diff --git a/example/passthrough_ll.c b/example/passthrough_ll.c
index 5f1fde9a79334a57bff47449487c5ed33eb570d0..e1a36efa6bd9cc3990ad286a20bd2c38cb78d086 100644 (file)
--- a/example/passthrough_ll.c
+++ b/example/passthrough_ll.c
@@ -652,8 +652,10 @@ static void lo_opendir(fuse_req_t req, fuse_ino_t ino, struct fuse_file_info *fi
        d->entry = NULL;
 
        fi->fh = (uintptr_t) d;
-       if (lo->cache == CACHE_ALWAYS)
+       if (lo->cache != CACHE_NEVER)
                fi->cache_readdir = 1;
+       if (lo->cache == CACHE_ALWAYS)
+               fi->keep_cache = 1;
        fuse_reply_open(req, fi);
        return;