diff options
| -rw-r--r-- | fs/io_uring.c | 55 |
1 files changed, 52 insertions, 3 deletions
diff --git a/fs/io_uring.c b/fs/io_uring.c index 0d7be2e9d005..3790c7fe9fee 100644 --- a/fs/io_uring.c +++ b/fs/io_uring.c @@ -2980,14 +2980,15 @@ static inline int io_rw_prep_async(struct io_kiocb *req, int rw, bool force_nonblock) { struct io_async_rw *iorw = &req->io->rw; + struct iovec *iov; ssize_t ret; - iorw->iter.iov = iorw->fast_iov; - ret = __io_import_iovec(rw, req, (struct iovec **) &iorw->iter.iov, - &iorw->iter, !force_nonblock); + iorw->iter.iov = iov = iorw->fast_iov; + ret = __io_import_iovec(rw, req, &iov, &iorw->iter, !force_nonblock); if (unlikely(ret < 0)) return ret; + iorw->iter.iov = iov; io_req_map_rw(req, iorw->iter.iov, iorw->fast_iov, &iorw->iter); return 0; } @@ -8023,6 +8024,28 @@ static bool io_match_link(struct io_kiocb *preq, struct io_kiocb *req) return false; } +static inline bool io_match_files(struct io_kiocb *req, + struct files_struct *files) +{ + return (req->flags & REQ_F_WORK_INITIALIZED) && req->work.files == files; +} + +static bool io_match_link_files(struct io_kiocb *req, + struct files_struct *files) +{ + struct io_kiocb *link; + + if (io_match_files(req, files)) + return true; + if (req->flags & REQ_F_LINK_HEAD) { + list_for_each_entry(link, &req->link_list, link_list) { + if (io_match_files(link, files)) + return true; + } + } + return false; +} + /* * We're looking to cancel 'req' because it's holding on to our files, but * 'req' could be a link to another request. See if it is, and cancel that @@ -8097,12 +8120,38 @@ static void io_attempt_cancel(struct io_ring_ctx *ctx, struct io_kiocb *req) io_timeout_remove_link(ctx, req); } +static void io_cancel_defer_files(struct io_ring_ctx *ctx, + struct files_struct *files) +{ + struct io_defer_entry *de = NULL; + LIST_HEAD(list); + + spin_lock_irq(&ctx->completion_lock); + list_for_each_entry_reverse(de, &ctx->defer_list, list) { + if (io_match_link_files(de->req, files)) { + list_cut_position(&list, &ctx->defer_list, &de->list); + break; + } + } + spin_unlock_irq(&ctx->completion_lock); + + while (!list_empty(&list)) { + de = list_first_entry(&list, struct io_defer_entry, list); + list_del_init(&de->list); + req_set_fail_links(de->req); + io_put_req(de->req); + io_req_complete(de->req, -ECANCELED); + kfree(de); + } +} + static void io_uring_cancel_files(struct io_ring_ctx *ctx, struct files_struct *files) { if (list_empty_careful(&ctx->inflight_list)) return; + io_cancel_defer_files(ctx, files); /* cancel all at once, should be faster than doing it one by one*/ io_wq_cancel_cb(ctx->io_wq, io_wq_files_match, files, true); |