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From 10db7ee919edbf7b6f65124e475d89864de7bb1b Mon Sep 17 00:00:00 2001
From: He Zhe <zhe.he@windriver.com>
Date: Fri, 5 Jan 2024 18:57:18 +0800
Subject: [PATCH] aufs: i_op: Add handling for au_pin_hdir_set_owner with RT
kernel
In RT kernel rw_semaphore uses rt_mutex whose owner should be set to the
task. Add a condition to handle both cases to avoid the following build error
for PREEMPT_RT kernel.
fs/aufs/i_op.c: In function 'au_pin_hdir_set_owner':
fs/aufs/i_op.c:639:52: error: 'struct rw_semaphore' has no member named 'owner'
639 | atomic_long_set(&p->hdir->hi_inode->i_rwsem.owner, (long)task);
Signed-off-by: He Zhe <zhe.he@windriver.com>
Signed-off-by: Bruce Ashfield <bruce.ashfield@gmail.com>
---
fs/aufs/i_op.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/fs/aufs/i_op.c b/fs/aufs/i_op.c
index 993d57633393..a1e0d0c54d23 100644
--- a/fs/aufs/i_op.c
+++ b/fs/aufs/i_op.c
@@ -638,7 +638,11 @@ int au_pin_hdir_relock(struct au_pin *p)
static void au_pin_hdir_set_owner(struct au_pin *p, struct task_struct *task)
{
+#if IS_ENABLED(CONFIG_PREEMPT_RT)
+ p->hdir->hi_inode->i_rwsem.rwbase.rtmutex.owner = task;
+#else
atomic_long_set(&p->hdir->hi_inode->i_rwsem.owner, (long)task);
+#endif
}
void au_pin_hdir_acquire_nest(struct au_pin *p)
--
2.39.2
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