[PATCH v7 4/7] fuse: Cache a NULL acl when FUSE_GETXATTR returns -ENOSYS

2018-02-26 Thread Eric W. Biederman
When FUSE_GETXATTR will never return anything call cache_no_acl to cache that state in the vfs as well in fuse with fc->no_getxattr. The only code path this affects are the code paths that call fuse_get_acl and caching a NULL or returning it immediately is exactly the same effect so this should

[PATCH v7 4/7] fuse: Cache a NULL acl when FUSE_GETXATTR returns -ENOSYS

2018-02-26 Thread Eric W. Biederman
When FUSE_GETXATTR will never return anything call cache_no_acl to cache that state in the vfs as well in fuse with fc->no_getxattr. The only code path this affects are the code paths that call fuse_get_acl and caching a NULL or returning it immediately is exactly the same effect so this should