linuxkit/kernel/patches-4.14.x-rt/0389-md-disable-bcache.patch
Tiejun Chen 9a88a5e986 Upgrade -rt patches to v4.14.29-rt25
Signed-off-by: Tiejun Chen <tiejun.china@gmail.com>
2018-03-30 21:10:01 -07:00

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From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Thu, 29 Aug 2013 11:48:57 +0200
Subject: md: disable bcache
It uses anon semaphores
|drivers/md/bcache/request.c: In function cached_dev_write_complete:
|drivers/md/bcache/request.c:1007:2: error: implicit declaration of function up_read_non_owner [-Werror=implicit-function-declaration]
| up_read_non_owner(&dc->writeback_lock);
| ^
|drivers/md/bcache/request.c: In function request_write:
|drivers/md/bcache/request.c:1033:2: error: implicit declaration of function down_read_non_owner [-Werror=implicit-function-declaration]
| down_read_non_owner(&dc->writeback_lock);
| ^
either we get rid of those or we have to introduce them…
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
---
drivers/md/bcache/Kconfig | 1 +
1 file changed, 1 insertion(+)
--- a/drivers/md/bcache/Kconfig
+++ b/drivers/md/bcache/Kconfig
@@ -1,6 +1,7 @@
config BCACHE
tristate "Block device as cache"
+ depends on !PREEMPT_RT_FULL
---help---
Allows a block device to be used as cache for other devices; uses
a btree for indexing and the layout is optimized for SSDs.