[PATCH 4/7] Revert "signal: don't allow sending any signals to PF_IO_WORKER threads"

[Jens Axboe]

This reverts commit 5be28c8f85ce99ed2d329d2ad8bdd18ea19473a5.

IO threads now take signals just fine, so there's no reason to limit them
specifically. Revert the change that prevented that from happening.

Signed-off-by: Jens Axboe <axboe@xxxxxxxxx>
---
 kernel/signal.c | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/kernel/signal.c b/kernel/signal.c
index e3e1b8fbfe8a..af890479921a 100644
--- a/kernel/signal.c
+++ b/kernel/signal.c
@@ -834,9 +834,6 @@ static int check_kill_permission(int sig, struct kernel_siginfo *info,
 
 	if (!valid_signal(sig))
 		return -EINVAL;
-	/* PF_IO_WORKER threads don't take any signals */
-	if (t->flags & PF_IO_WORKER)
-		return -ESRCH;
 
 	if (!si_fromuser(info))
 		return 0;
-- 
2.31.0