The patch titled
Subject: kfifo: fix kfifo_alloc() and kfifo_init()
has been added to the -mm tree. Its filename is
kfifo-fix-kfifo_alloc-and-kfifo_init.patch
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From: Stefani Seibold <stefani@xxxxxxxxxxx>
Subject: kfifo: fix kfifo_alloc() and kfifo_init()
Fix kfifo_alloc() and kfifo_init() to alloc at least the requested number
of elements. Since the kfifo operates on power of 2 the request size will
be rounded up to the next power of two.
Signed-off-by: Stefani Seibold <stefani@xxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
lib/kfifo.c | 6 ++----
1 file changed, 2 insertions(+), 4 deletions(-)
diff -puN lib/kfifo.c~kfifo-fix-kfifo_alloc-and-kfifo_init lib/kfifo.c
--- a/lib/kfifo.c~kfifo-fix-kfifo_alloc-and-kfifo_init
+++ a/lib/kfifo.c
@@ -42,8 +42,7 @@ int __kfifo_alloc(struct __kfifo *fifo,
* round down to the next power of 2, since our 'let the indices
* wrap' technique works only in this case.
*/
- if (!is_power_of_2(size))
- size = rounddown_pow_of_two(size);
+ size = roundup_pow_of_two(size);
fifo->in = 0;
fifo->out = 0;
@@ -83,8 +82,7 @@ int __kfifo_init(struct __kfifo *fifo, v
{
size /= esize;
- if (!is_power_of_2(size))
- size = rounddown_pow_of_two(size);
+ size = roundup_pow_of_two(size);
fifo->in = 0;
fifo->out = 0;
_
Patches currently in -mm which might be from stefani@xxxxxxxxxxx are
kfifo-move-kfifoc-from-kernel-to-lib.patch
kfifo-fix-kfifo_alloc-and-kfifo_init.patch
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