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Tue, 12 May 2026 09:46:19 -0400 (EDT) Message-ID: <89cb66a2-0f38-4b44-8897-50e932ef6153@bsbernd.com> Date: Tue, 12 May 2026 15:46:17 +0200 Precedence: bulk X-Mailing-List: linux-fsdevel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH] fuse: add fusex filesystem To: Amir Goldstein , Miklos Szeredi Cc: Miklos Szeredi , fuse-devel@lists.linux.dev, linux-fsdevel@vger.kernel.org, Horst Birthelmer References: <20260429102058.1362965-1-mszeredi@redhat.com> From: Bernd Schubert Content-Language: fr, en-US, de-DE, ru-RU In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit On 5/12/26 15:08, Amir Goldstein wrote: > On Tue, May 12, 2026 at 10:18 AM Miklos Szeredi wrote: >> >>> I see no reason for fusex to not support lookup by ".", which is >>> anyway needed for "reconnect", so a fresh FUSEX_NFS_EXPORT opt-in >>> for "re-export to NFS" may make more sense. >> >> Why add reconnect? If server supports persistent file handles, and >> all req's get the file handle, then no state (nodeid) needs to be >> stored by the server. >> > > Yes, we are saying the same thing. > What I am saying is that legacy fuse has FUSE_EXPORT_SUPPORT > which means server supports lookup of "." which libfuse always enabled > and then we added FUSE_NO_EXPORT_SUPPORT to opt-out of nfs export. > > I am saying that in FUSEX, lookup "." support is implied. > And that nfs export should always be opt-in (FUSEX_NFS_EXPORT). I'm confused here, why do we need lookup of "." without NFS export? And which file system actually supports lookup of "."? Shouldn't all that be scratched in favor of LOOKUP_HANDLE? Thanks, Bernd