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-rw-r--r--include/linux/idr.h9
-rw-r--r--lib/idr.c9
2 files changed, 12 insertions, 6 deletions
diff --git a/include/linux/idr.h b/include/linux/idr.h
index 3ade03e5c7af..b235ed987021 100644
--- a/include/linux/idr.h
+++ b/include/linux/idr.h
@@ -263,7 +263,8 @@ void ida_destroy(struct ida *ida);
*
* Allocate an ID between 0 and %INT_MAX, inclusive.
*
- * Context: Any context.
+ * Context: Any context. It is safe to call this function without
+ * locking in your code.
* Return: The allocated ID, or %-ENOMEM if memory could not be allocated,
* or %-ENOSPC if there are no free IDs.
*/
@@ -280,7 +281,8 @@ static inline int ida_alloc(struct ida *ida, gfp_t gfp)
*
* Allocate an ID between @min and %INT_MAX, inclusive.
*
- * Context: Any context.
+ * Context: Any context. It is safe to call this function without
+ * locking in your code.
* Return: The allocated ID, or %-ENOMEM if memory could not be allocated,
* or %-ENOSPC if there are no free IDs.
*/
@@ -297,7 +299,8 @@ static inline int ida_alloc_min(struct ida *ida, unsigned int min, gfp_t gfp)
*
* Allocate an ID between 0 and @max, inclusive.
*
- * Context: Any context.
+ * Context: Any context. It is safe to call this function without
+ * locking in your code.
* Return: The allocated ID, or %-ENOMEM if memory could not be allocated,
* or %-ENOSPC if there are no free IDs.
*/
diff --git a/lib/idr.c b/lib/idr.c
index c2cf2c52bbde..3fa8be43696f 100644
--- a/lib/idr.c
+++ b/lib/idr.c
@@ -372,7 +372,8 @@ EXPORT_SYMBOL(idr_replace);
* Allocate an ID between @min and @max, inclusive. The allocated ID will
* not exceed %INT_MAX, even if @max is larger.
*
- * Context: Any context.
+ * Context: Any context. It is safe to call this function without
+ * locking in your code.
* Return: The allocated ID, or %-ENOMEM if memory could not be allocated,
* or %-ENOSPC if there are no free IDs.
*/
@@ -479,7 +480,8 @@ EXPORT_SYMBOL(ida_alloc_range);
* @ida: IDA handle.
* @id: Previously allocated ID.
*
- * Context: Any context.
+ * Context: Any context. It is safe to call this function without
+ * locking in your code.
*/
void ida_free(struct ida *ida, unsigned int id)
{
@@ -531,7 +533,8 @@ EXPORT_SYMBOL(ida_free);
* or freed. If the IDA is already empty, there is no need to call this
* function.
*
- * Context: Any context.
+ * Context: Any context. It is safe to call this function without
+ * locking in your code.
*/
void ida_destroy(struct ida *ida)
{