[08/16] uaccess: Cleanup PREEMPT_COUNT leftovers
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Message ID 20201029165019.14218-8-urezki@gmail.com
State New, archived
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Series
  • [01/16] rcu/tree: Add a work to allocate pages from regular context
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Commit Message

Uladzislau Rezki Oct. 29, 2020, 4:50 p.m. UTC
From: Thomas Gleixner <tglx@linutronix.de>

CONFIG_PREEMPT_COUNT is now unconditionally enabled and will be
removed. Cleanup the leftovers before doing so.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Uladzislau Rezki (Sony) <urezki@gmail.com>
---
 include/linux/uaccess.h | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

Patch
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diff --git a/include/linux/uaccess.h b/include/linux/uaccess.h
index c7c6e8b8344d..d6473a72a336 100644
--- a/include/linux/uaccess.h
+++ b/include/linux/uaccess.h
@@ -275,9 +275,9 @@  static inline bool pagefault_disabled(void)
  *
  * This function should only be used by the fault handlers. Other users should
  * stick to pagefault_disabled().
- * Please NEVER use preempt_disable() to disable the fault handler. With
- * !CONFIG_PREEMPT_COUNT, this is like a NOP. So the handler won't be disabled.
- * in_atomic() will report different values based on !CONFIG_PREEMPT_COUNT.
+ *
+ * Please NEVER use preempt_disable() or local_irq_disable() to disable the
+ * fault handler.
  */
 #define faulthandler_disabled() (pagefault_disabled() || in_atomic())