fs: jbd/jbd2: Make state lock and journal head lock rt safe
bit_spin_locks break under RT.
Based on a previous patch from Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
--
include/linux/buffer_head.h | 10 ++++++++++
include/linux/jbd_common.h | 24 ++++++++++++++++++++++++
2 files changed, 34 insertions(+)
diff --git a/include/linux/buffer_head.h b/include/linux/buffer_head.h
index 152e5dc..2f4697c 100644
--- a/include/linux/buffer_head.h
+++ b/include/linux/buffer_head.h
@@ -76,6 +76,11 @@
atomic_t b_count; /* users using this buffer_head */
#ifdef CONFIG_PREEMPT_RT_BASE
spinlock_t b_uptodate_lock;
+#if defined(CONFIG_JBD) || defined(CONFIG_JBD_MODULE) || \
+ defined(CONFIG_JBD2) || defined(CONFIG_JBD2_MODULE)
+ spinlock_t b_state_lock;
+ spinlock_t b_journal_head_lock;
+#endif
#endif
};
@@ -107,6 +112,11 @@
{
#ifdef CONFIG_PREEMPT_RT_BASE
spin_lock_init(&bh->b_uptodate_lock);
+#if defined(CONFIG_JBD) || defined(CONFIG_JBD_MODULE) || \
+ defined(CONFIG_JBD2) || defined(CONFIG_JBD2_MODULE)
+ spin_lock_init(&bh->b_state_lock);
+ spin_lock_init(&bh->b_journal_head_lock);
+#endif
#endif
}