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- From 9fcd5003c0363af140a06aba94e62c9e1ea0381e Mon Sep 17 00:00:00 2001
- From: Marc Gonzalez <marc_gonzalez@sigmadesigns.com>
- Date: Mon, 11 Jan 2016 16:45:30 +0100
- Subject: [PATCH] Fix fusion: Unknown symbol tasklist_lock (err 0)
- Commit 28f6569ab7d0 renamed TREE_PREEMPT_RCU to PREEMPT_RCU in 3.19
- As a result, the code incorrectly falls back to using tasklist_lock
- (which was made private in 2.6.18)
- Always use rcu_read_lock on modern kernels.
- Signed-off-by: Marc Gonzalez <marc_gonzalez@sigmadesigns.com>
- ---
- linux/drivers/char/fusion/fusionee.c | 4 ++--
- 1 file changed, 2 insertions(+), 2 deletions(-)
- diff --git a/linux/drivers/char/fusion/fusionee.c b/linux/drivers/char/fusion/fusionee.c
- index ef067f5bc831..70cd0a665f98 100644
- --- a/linux/drivers/char/fusion/fusionee.c
- +++ b/linux/drivers/char/fusion/fusionee.c
- @@ -925,7 +925,7 @@ fusionee_kill(FusionDev * dev,
- if (f != fusionee && (!target || target == f->id)) {
- struct task_struct *p;
-
- -#if defined(CONFIG_TREE_RCU) || defined(CONFIG_TREE_PREEMPT_RCU) || defined(CONFIG_TINY_RCU) || defined(rcu_read_lock)
- +#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
- rcu_read_lock();
- #else
- read_lock(&tasklist_lock);
- @@ -946,7 +946,7 @@ fusionee_kill(FusionDev * dev,
- }
- }
-
- -#if defined(CONFIG_TREE_RCU) || defined(CONFIG_TREE_PREEMPT_RCU) || defined(CONFIG_TINY_RCU) || defined(rcu_read_unlock)
- +#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
- rcu_read_unlock();
- #else
- read_unlock(&tasklist_lock);
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