commit 5a842a7448bbfa9bda0a74ca4f239c1b02bb98d8
author Jens Axboe <axboe@kernel.dk> Thu Mar 25 18:18:15 2021 -0600
committer Jens Axboe <axboe@kernel.dk> Sat Mar 27 14:09:10 2021 -0600
tree 748d031df2d508ca55cd4db4485c3752901b8ce8
parent b16b3855d89fba640996fefdd3a113c0aa0e380d

Revert "signal: don't allow sending any signals to PF_IO_WORKER threads"

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@kernel.dk>

kernel/signal.c

diff --git a/kernel/signal.c b/kernel/signal.c
index d22177d..9e172b9 100644
--- a/kernel/signal.c
+++ b/kernel/signal.c
@@ -834,9 +834,6 @@
 
 	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;