6.18-stable review patch. If anyone has any objections, please let me know. ------------------ From: Miklos Szeredi [ Upstream commit a697d95fcdbb3bbe25cdc29db5542ddcebb831c1 ] Only used by FUSE_INIT and CUSE_INIT, these can store the relevant pointer in their structs derived from fuse_args. Signed-off-by: Miklos Szeredi Stable-dep-of: ed9c881f3b49 ("fuse: fix race between interrupt and resend") Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman --- fs/fuse/args.h | 2 +- fs/fuse/cuse.c | 7 ++++--- fs/fuse/dev.c | 7 +++---- fs/fuse/file.c | 22 +++++++++------------- fs/fuse/inode.c | 10 ++++++---- 5 files changed, 23 insertions(+), 25 deletions(-) --- a/fs/fuse/args.h +++ b/fs/fuse/args.h @@ -44,7 +44,7 @@ struct fuse_args { bool abort_on_kill:1; struct fuse_in_arg in_args[4]; struct fuse_arg out_args[2]; - void (*end)(struct fuse_mount *fm, struct fuse_args *args, int error); + void (*end)(struct fuse_args *args, int error); /* Used for kvec iter backed by vmalloc address */ void *vmap_base; }; --- a/fs/fuse/cuse.c +++ b/fs/fuse/cuse.c @@ -306,6 +306,7 @@ struct cuse_init_args { struct cuse_init_out out; struct folio *folio; struct fuse_folio_desc desc; + struct fuse_conn *fc; }; /** @@ -319,11 +320,10 @@ struct cuse_init_args { * required data structures for it. Please read the comment at the * top of this file for high level overview. */ -static void cuse_process_init_reply(struct fuse_mount *fm, - struct fuse_args *args, int error) +static void cuse_process_init_reply(struct fuse_args *args, int error) { - struct fuse_conn *fc = fm->fc; struct cuse_init_args *ia = container_of(args, typeof(*ia), ap.args); + struct fuse_conn *fc = ia->fc; struct fuse_args_pages *ap = &ia->ap; struct cuse_conn *cc = fc_to_cc(fc), *pos; struct cuse_init_out *arg = &ia->out; @@ -468,6 +468,7 @@ static int cuse_send_init(struct cuse_co ap->descs = &ia->desc; ia->folio = folio; ia->desc.length = ap->args.out_args[1].size; + ia->fc = &cc->fc; ap->args.end = cuse_process_init_reply; rc = fuse_simple_background(fm, &ap->args, GFP_KERNEL); --- a/fs/fuse/dev.c +++ b/fs/fuse/dev.c @@ -512,7 +512,7 @@ void fuse_request_end(struct fuse_req *r } if (test_bit(FR_ASYNC, &req->flags)) - req->args->end(fm, req->args, req->out.h.error); + req->args->end(req->args, req->out.h.error); put_request: fuse_put_request(req); } @@ -1860,8 +1860,7 @@ struct fuse_retrieve_args { struct fuse_notify_retrieve_in inarg; }; -static void fuse_retrieve_end(struct fuse_mount *fm, struct fuse_args *args, - int error) +static void fuse_retrieve_end(struct fuse_args *args, int error) { struct fuse_retrieve_args *ra = container_of(args, typeof(*ra), ap.args); @@ -1956,7 +1955,7 @@ static int fuse_retrieve(struct fuse_mou err = fuse_simple_notify_reply(fm, args, outarg->notify_unique); if (err) - fuse_retrieve_end(fm, args, err); + fuse_retrieve_end(args, err); return err; } --- a/fs/fuse/file.c +++ b/fs/fuse/file.c @@ -91,8 +91,7 @@ static struct fuse_file *fuse_file_get(s return ff; } -static void fuse_release_end(struct fuse_mount *fm, struct fuse_args *args, - int error) +static void fuse_release_end(struct fuse_args *args, int error) { struct fuse_release_args *ra = container_of(args, typeof(*ra), args); @@ -112,15 +111,15 @@ static void fuse_file_put(struct fuse_fi if (!args) { /* Do nothing when server does not implement 'opendir' */ } else if (args->opcode == FUSE_RELEASE && ff->fm->fc->no_open) { - fuse_release_end(ff->fm, args, 0); + fuse_release_end(args, 0); } else if (sync) { fuse_simple_request(ff->fm, args); - fuse_release_end(ff->fm, args, 0); + fuse_release_end(args, 0); } else { args->end = fuse_release_end; if (fuse_simple_background(ff->fm, args, GFP_KERNEL | __GFP_NOFAIL)) - fuse_release_end(ff->fm, args, -ENOTCONN); + fuse_release_end(args, -ENOTCONN); } kfree(ff); } @@ -709,8 +708,7 @@ static void fuse_io_free(struct fuse_io_ kfree(ia); } -static void fuse_aio_complete_req(struct fuse_mount *fm, struct fuse_args *args, - int err) +static void fuse_aio_complete_req(struct fuse_args *args, int err) { struct fuse_io_args *ia = container_of(args, typeof(*ia), ap.args); struct fuse_io_priv *io = ia->io; @@ -758,7 +756,7 @@ static ssize_t fuse_async_req_send(struc ia->ap.args.may_block = io->should_dirty; err = fuse_simple_background(fm, &ia->ap.args, GFP_KERNEL); if (err) - fuse_aio_complete_req(fm, &ia->ap.args, err); + fuse_aio_complete_req(&ia->ap.args, err); return num_bytes; } @@ -881,8 +879,7 @@ static int fuse_iomap_read_folio_range(c return fuse_do_readfolio(file, folio, off, len); } -static void fuse_readpages_end(struct fuse_mount *fm, struct fuse_args *args, - int err) +static void fuse_readpages_end(struct fuse_args *args, int err) { int i; struct fuse_io_args *ia = container_of(args, typeof(*ia), ap.args); @@ -947,7 +944,7 @@ static void fuse_send_readpages(struct f res = fuse_simple_request(fm, &ap->args); err = res < 0 ? res : 0; } - fuse_readpages_end(fm, &ap->args, err); + fuse_readpages_end(&ap->args, err); } static void fuse_readahead(struct readahead_control *rac) @@ -1950,8 +1947,7 @@ __acquires(fi->lock) } } -static void fuse_writepage_end(struct fuse_mount *fm, struct fuse_args *args, - int error) +static void fuse_writepage_end(struct fuse_args *args, int error) { struct fuse_writepage_args *wpa = container_of(args, typeof(*wpa), ia.ap.args); --- a/fs/fuse/inode.c +++ b/fs/fuse/inode.c @@ -1311,13 +1311,14 @@ struct fuse_init_args { struct fuse_args args; struct fuse_init_in in; struct fuse_init_out out; + struct fuse_mount *fm; }; -static void process_init_reply(struct fuse_mount *fm, struct fuse_args *args, - int error) +static void process_init_reply(struct fuse_args *args, int error) { - struct fuse_conn *fc = fm->fc; struct fuse_init_args *ia = container_of(args, typeof(*ia), args); + struct fuse_mount *fm = ia->fm; + struct fuse_conn *fc = fm->fc; struct fuse_init_out *arg = &ia->out; bool ok = true; @@ -1486,6 +1487,7 @@ static struct fuse_init_args *fuse_new_i ia = kzalloc(sizeof(*ia), GFP_KERNEL | __GFP_NOFAIL); + ia->fm = fm; ia->in.major = FUSE_KERNEL_VERSION; ia->in.minor = FUSE_KERNEL_MINOR_VERSION; ia->in.max_readahead = fm->sb->s_bdi->ra_pages * PAGE_SIZE; @@ -1559,7 +1561,7 @@ int fuse_send_init(struct fuse_mount *fm if (!err) return 0; } - process_init_reply(fm, &ia->args, err); + process_init_reply(&ia->args, err); if (fm->fc->conn_error) return -ENOTCONN; return 0;