* [PATCH] kfifo: fix kfifo_init comment about power of 2 rounding
@ 2022-03-22 19:38 Tyrel Datwyler
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From: Tyrel Datwyler @ 2022-03-22 19:38 UTC (permalink / raw
To: linux-kernel; +Cc: stefani, torvlds, Tyrel Datwyler
Since, Commit ab9bb6318b09 ("Partially revert "kfifo: fix kfifo_alloc()
and kfifo_init()"") kfifo_init() rounds the preallocated buffer size
down to a power of 2 to determine the number of kfifo elements. The
documentation around the kfifo_init() macro was not updated to reflect
this change from the previous behavior that rounded up to a power of 2.
Fixes: ab9bb6318b09 ("Partially revert "kfifo: fix kfifo_alloc() and kfifo_init()"")
Signed-off-by: Tyrel Datwyler <tyreld@linux.ibm.com>
---
include/linux/kfifo.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/include/linux/kfifo.h b/include/linux/kfifo.h
index 86249476b57f..123fa759bba9 100644
--- a/include/linux/kfifo.h
+++ b/include/linux/kfifo.h
@@ -378,7 +378,7 @@ __kfifo_int_must_check_helper( \
*
* This macro initializes a fifo using a preallocated buffer.
*
- * The number of elements will be rounded-up to a power of 2.
+ * The number of elements will be rounded-down to a power of 2.
* Return 0 if no error, otherwise an error code.
*/
#define kfifo_init(fifo, buffer, size) \
--
2.35.1
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2022-03-22 19:38 [PATCH] kfifo: fix kfifo_init comment about power of 2 rounding Tyrel Datwyler
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