linux-next.git/fs/fuse/dev.h, branch master

fuse: decouple fuse_ring creation from ent registration

2026-08-17T15:02:37+00:00

Currently, the connection's fuse_ring is created lazily on the first FUSE_IO_URING_CMD_REGISTER command. A server registers entries from one thread per queue (one per CPU) and those threads issue their first REGISTER command concurrently. They then race to create the single per-connection fuse_ring, which required open-coded handling in fuse_uring_create() to detect and protect against concurrent creations. Decouple fuse_ring creation from ent registration and move it to FUSE_INIT reply processing after a server has negotiated and set FUSE_OVER_IO_URING. The ring is published before the connection is marked initialized. fuse_uring_register() no longer creates the ring and it instead uses the ring set up at init time. Reviewed-by: Bernd Schubert Signed-off-by: Joanne Koong Signed-off-by: Miklos Szeredi

fuse: remove #include "fuse_i.h" from dev.c and dev_uring.c

2026-06-15T12:06:18+00:00

Move a couple of function declarations from fuse_i.h to dev.h and fuse_dev_i.h. Add fuse_conn_get_id() helper that retrieves the connection ID (s_dev) from fuse_conn. With the exception of cuse.c, virtio_fs.c and trace.c source files now either include fuse_i.h or fuse_dev_i/dev_uring_i.h but not both. Signed-off-by: Miklos Szeredi

fuse: set params in fuse_chan_set_initialized()

2026-06-15T12:06:17+00:00

Set minor, max_write and max_pages in the fuse_chan. These match the same fields in fuse_conn but are needed in both layers. [Dongyang Jin: Pointers should use NULL instead of explicit '0'] Signed-off-by: Miklos Szeredi

fuse: create notify.c

2026-06-15T12:06:17+00:00

Move FUSE_NOTIFY_* handling into a separate source file. Signed-off-by: Miklos Szeredi

fuse: create poll.c

2026-06-15T12:06:17+00:00

Move f_op->poll related functions to the new source file. Signed-off-by: Miklos Szeredi

fuse: change fud->fc to fud->chan

2026-06-15T12:06:17+00:00

Store pointer to struct fuse_chan instead of struct fuse_conn in fuse_dev. Signed-off-by: Miklos Szeredi

fuse: split out filesystem part of request sending

2026-06-15T12:06:17+00:00

Create a new source file: req.c and add the request sending entry functions: __fuse_simple_request() fuse_simple_background() fuse_simple_notify_reply() Introduce transport layer sending functions that are called by the respective fs layer function: fuse_chan_send() fuse_chan_send_bg() fuse_chan_send_notify_reply() Move calculation of request header fields uid, gid and pid from fuse_get_req() and fuse_force_creads() to a new helper: fuse_fill_creds(). These fileds are now passed to the transport layer via struct fuse_args. Signed-off-by: Miklos Szeredi

fuse: abort related layering cleanup

2026-06-15T12:06:17+00:00

- rename fuse_abort_conn() to fuse_chan_abort(), pass fuse_chan pointer instead of fuse_conn - pass an abort_with_err argument that tells fuse_dev_(read|write) to return with ECONNABORTED instead of ENODEV - move fc->aborted to fch->abort_with_err - rename fuse_wait_aborted() to fuse_chan_wait_aborted() Signed-off-by: Miklos Szeredi

fuse: remove #include "fuse_i.h" from "req_timeout.c"

2026-06-15T12:06:17+00:00

Just need to move fuse_abort_conn(). Signed-off-by: Miklos Szeredi

fuse: move forget related struct and helpers

2026-06-15T12:06:16+00:00

Move: - struct fuse_forget_link to fuse_dev_i.h - fuse_alloc_forget() to dev.c/dev.h Rename: - fuse_queue_forget -> fuse_chan_queue_forget Signed-off-by: Miklos Szeredi