passthrough_ll: lo_create() should honor CACHE_NEVER (#345)

lo_create() did not honour CACHE_NEVER in lo_create(), which has an effect
on how I/O is performed after the open.

The value of CACHE_ALWAYS, which results in setting fi->keep_cache, only
has an effect for the state of the cache at open, and since the file was
just created the cache is always empty.  Hence setting this doesn't have an
effect on lo_create(), but keep it for symmetry with lo_open().

diff --git a/example/passthrough_ll.c b/example/passthrough_ll.c
index abb7ec9d9e6779ef34e18f130a0c93749567a49a..1598958de9149913f835b465c7aebc9407703ef6 100644 (file)
--- a/example/passthrough_ll.c
+++ b/example/passthrough_ll.c
@@ -773,6 +773,7 @@ static void lo_create(fuse_req_t req, fuse_ino_t parent, const char *name,
                      mode_t mode, struct fuse_file_info *fi)
 {
        int fd;
+       struct lo_data *lo = lo_data(req);
        struct fuse_entry_param e;
        int err;
 
@@ -786,6 +787,10 @@ static void lo_create(fuse_req_t req, fuse_ino_t parent, const char *name,
                return (void) fuse_reply_err(req, errno);
 
        fi->fh = fd;
+       if (lo->cache == CACHE_NEVER)
+               fi->direct_io = 1;
+       else if (lo->cache == CACHE_ALWAYS)
+               fi->keep_cache = 1;
 
        err = lo_do_lookup(req, parent, name, &e);
        if (err)