From: Brian Behlendorf <behlendorf1@llnl.gov>
Date: Mon, 14 Jun 2010 23:14:23 +0000 (-0700)
Subject: Update fix-taskq to never sleep at interrupt time
X-Git-Tag: zfs-0.5.0~38^2^2~1^2^2~28^2^2^2~1^2
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=49ad53c46fda1854a057f53bf972ba34402d19f3;p=zfs

Update fix-taskq to never sleep at interrupt time

Updated fix to detect if we are in an interrupt and only sleep if it
is safe to do some.  I guess it must be safe to sleep under Solaris
this must be handled in a sort interrupt handler there
---

diff --git a/module/zfs/zio.c b/module/zfs/zio.c
index 88d80af4e..db9bb65fd 100644
--- a/module/zfs/zio.c
+++ b/module/zfs/zio.c
@@ -1048,7 +1048,10 @@ zio_taskq_dispatch(zio_t *zio, enum zio_taskq_type q, boolean_t cutinline)
 {
 	spa_t *spa = zio->io_spa;
 	zio_type_t t = zio->io_type;
-	int flags = TQ_SLEEP | (cutinline ? TQ_FRONT : 0);
+	int flags;
+
+	flags  = (cutinline ? TQ_FRONT : 0);
+	flags |= ((q == ZIO_TASKQ_INTERRUPT) ? TQ_NOSLEEP : TQ_SLEEP);
 
 	/*
 	 * If we're a config writer or a probe, the normal issue and