diff options
Diffstat (limited to 'fs/io_uring.c')
| -rw-r--r-- | fs/io_uring.c | 17 |
1 files changed, 13 insertions, 4 deletions
diff --git a/fs/io_uring.c b/fs/io_uring.c index 3c669d8f5e57..0b9ae3615911 100644 --- a/fs/io_uring.c +++ b/fs/io_uring.c @@ -11327,12 +11327,20 @@ static __cold int io_uring_create(unsigned entries, struct io_uring_params *p, ctx->user = get_uid(current_user()); /* - * For SQPOLL, we just need a wakeup, always. + * For SQPOLL, we just need a wakeup, always. For !SQPOLL, if + * COOP_TASKRUN is set, then IPIs are never needed by the app. */ - if (ctx->flags & IORING_SETUP_SQPOLL) + ret = -EINVAL; + if (ctx->flags & IORING_SETUP_SQPOLL) { + /* IPI related flags don't make sense with SQPOLL */ + if (ctx->flags & IORING_SETUP_COOP_TASKRUN) + goto err; ctx->notify_method = TWA_SIGNAL_NO_IPI; - else + } else if (ctx->flags & IORING_SETUP_COOP_TASKRUN) { + ctx->notify_method = TWA_SIGNAL_NO_IPI; + } else { ctx->notify_method = TWA_SIGNAL; + } /* * This is just grabbed for accounting purposes. When a process exits, @@ -11431,7 +11439,8 @@ static long io_uring_setup(u32 entries, struct io_uring_params __user *params) if (p.flags & ~(IORING_SETUP_IOPOLL | IORING_SETUP_SQPOLL | IORING_SETUP_SQ_AFF | IORING_SETUP_CQSIZE | IORING_SETUP_CLAMP | IORING_SETUP_ATTACH_WQ | - IORING_SETUP_R_DISABLED | IORING_SETUP_SUBMIT_ALL)) + IORING_SETUP_R_DISABLED | IORING_SETUP_SUBMIT_ALL | + IORING_SETUP_COOP_TASKRUN)) return -EINVAL; return io_uring_create(entries, &p, params); |