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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-06 01:02:38 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-06 01:02:38 +0000
commit08b74a000942a380fe028845f92cd3a0dee827d5 (patch)
treeaa78b4e12607c3e1fcce8d5cc42df4330792f118 /debian/patches-rt/0034-dm-rq-remove-BUG_ON-irqs_disabled-check.patch
parentAdding upstream version 4.19.249. (diff)
downloadlinux-debian/4.19.249-2.tar.xz
linux-debian/4.19.249-2.zip
Adding debian version 4.19.249-2.debian/4.19.249-2debian
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'debian/patches-rt/0034-dm-rq-remove-BUG_ON-irqs_disabled-check.patch')
-rw-r--r--debian/patches-rt/0034-dm-rq-remove-BUG_ON-irqs_disabled-check.patch37
1 files changed, 37 insertions, 0 deletions
diff --git a/debian/patches-rt/0034-dm-rq-remove-BUG_ON-irqs_disabled-check.patch b/debian/patches-rt/0034-dm-rq-remove-BUG_ON-irqs_disabled-check.patch
new file mode 100644
index 000000000..ee27e4207
--- /dev/null
+++ b/debian/patches-rt/0034-dm-rq-remove-BUG_ON-irqs_disabled-check.patch
@@ -0,0 +1,37 @@
+From 7437113ac72d093e8ee118ccfd6174f199811e3e Mon Sep 17 00:00:00 2001
+From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
+Date: Tue, 27 Mar 2018 16:24:15 +0200
+Subject: [PATCH 034/347] dm rq: remove BUG_ON(!irqs_disabled) check
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.246-rt110.tar.xz
+
+In commit 052189a2ec95 ("dm: remove superfluous irq disablement in
+dm_request_fn") the spin_lock_irq() was replaced with spin_lock() + a
+check for disabled interrupts. Later the locking part was removed in
+commit 2eb6e1e3aa87 ("dm: submit stacked requests in irq enabled
+context") but the BUG_ON() check remained.
+
+Since the original purpose for the "are-irqs-off" check is gone (the
+->queue_lock has been removed) remove it.
+
+Cc: Keith Busch <keith.busch@intel.com>
+Cc: Mike Snitzer <snitzer@redhat.com>
+Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
+---
+ drivers/md/dm-rq.c | 1 -
+ 1 file changed, 1 deletion(-)
+
+diff --git a/drivers/md/dm-rq.c b/drivers/md/dm-rq.c
+index 2957a3763f01..bc8192b4e7b2 100644
+--- a/drivers/md/dm-rq.c
++++ b/drivers/md/dm-rq.c
+@@ -689,7 +689,6 @@ static void dm_old_request_fn(struct request_queue *q)
+ /* Establish tio->ti before queuing work (map_tio_request) */
+ tio->ti = ti;
+ kthread_queue_work(&md->kworker, &tio->work);
+- BUG_ON(!irqs_disabled());
+ }
+ }
+
+--
+2.36.1
+