fuse: add pages to fuse_args
Miklos Szeredi authored

Derive fuse_args_pages from fuse_args. This is used to handle requests
which use pages for input or output.  The related flags are added to
fuse_args.

New FR_ALLOC_PAGES flags is added to indicate whether the page arrays in
fuse_req need to be freed by fuse_put_request() or not.
Signed-off-by: default avatarMiklos Szeredi <mszeredi@redhat.com>
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