* Re: [PATCH] udf: use ext2_find_next_bit
[not found] ` <10f740e81002280204q2849317bj3e7d22c5c0c93333@mail.gmail.com>
@ 2010-02-28 14:07 ` Geert Uytterhoeven
[not found] ` <10f740e81002280607p2ec5ec7eya6d6c2cc694b4733@mail.gmail.com>
1 sibling, 0 replies; 2+ messages in thread
From: Geert Uytterhoeven @ 2010-02-28 14:07 UTC (permalink / raw)
To: Akinobu Mita; +Cc: Jan Kara, linux-kernel, Linux-Next, linux-m68k
On Sun, Feb 28, 2010 at 11:04, Geert Uytterhoeven <geert@linux-m68k.org> wrote:
> On Thu, Feb 25, 2010 at 15:29, Akinobu Mita <akinobu.mita@gmail.com> wrote:
>> 2010/2/25 Geert Uytterhoeven <geert@linux-m68k.org>:
>>> On Thu, Feb 25, 2010 at 02:38, Akinobu Mita <akinobu.mita@gmail.com> wrote:
>>>> 2010/2/25 Jan Kara <jack@suse.cz>:
>>>>> On Tue 23-02-10 23:11:13, Akinobu Mita wrote:
>>>>>> Use ext2_find_next_bit (generic_find_next_le_bit) to find the set bit
>>>>>> in little endian bitmap region.
>>>
>>> Is any of this in linux-next now?
>>>
>>> http://kisskb.ellerman.id.au/kisskb/buildresult/2208481/
>>> | fs/udf/balloc.c:274: error: implicit declaration of function
>>> 'generic_find_next_le_bit'
>>
>> Yep, Jan's patch caused the build breakage.
>>
>> Because generic_find_next_le_bit() is not available for all
>> archtectures. So we should use ext2_find_next_bit() here.
>
> Most architectures use the definitions in asm-generic, so they're OK.
> M68k doesn't. S390 is also affected, and I think arm as well (but there's no
> arm all-modconfig build in linux-next, so I'm not 100% sure).
>
> I'm cooking a patch...
>From c9b5c7e6ef2092be822778a0b6b3d3032c058f5b Mon Sep 17 00:00:00 2001
From: Geert Uytterhoeven <geert@linux-m68k.org>
Date: Sun, 28 Feb 2010 13:06:27 +0100
Subject: [PATCH] m68k: Implement generic_find_next_{zero_,}le_bit()
linux-next:
fs/udf/balloc.c: In function 'udf_bitmap_new_block':
fs/udf/balloc.c:274: error: implicit declaration of function
'generic_find_next_le_bit'
Convert ext2_find_next_{zero_,}bit() into generic_find_next_{zero_,}le_bit(),
and wrap the ext2_find_next_{zero_,}bit() around the latter.
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
---
arch/m68k/include/asm/bitops_mm.h | 14 ++++++++------
1 files changed, 8 insertions(+), 6 deletions(-)
diff --git a/arch/m68k/include/asm/bitops_mm.h
b/arch/m68k/include/asm/bitops_mm.h
index 9bde784..b4ecdaa 100644
--- a/arch/m68k/include/asm/bitops_mm.h
+++ b/arch/m68k/include/asm/bitops_mm.h
@@ -365,6 +365,10 @@ static inline int minix_test_bit(int nr, const void *vaddr)
#define ext2_set_bit_atomic(lock, nr, addr) test_and_set_bit((nr) ^
24, (unsigned long *)(addr))
#define ext2_clear_bit(nr, addr) __test_and_clear_bit((nr) ^ 24,
(unsigned long *)(addr))
#define ext2_clear_bit_atomic(lock, nr, addr) test_and_clear_bit((nr)
^ 24, (unsigned long *)(addr))
+#define ext2_find_next_zero_bit(addr, size, offset) \
+ generic_find_next_zero_le_bit((unsigned long *)addr, size, offset)
+#define ext2_find_next_bit(addr, size, offset) \
+ generic_find_next_le_bit((unsigned long *)addr, size, offset)
static inline int ext2_test_bit(int nr, const void *vaddr)
{
@@ -394,10 +398,9 @@ static inline int ext2_find_first_zero_bit(const
void *vaddr, unsigned size)
return (p - addr) * 32 + res;
}
-static inline int ext2_find_next_zero_bit(const void *vaddr, unsigned size,
- unsigned offset)
+static inline unsigned long generic_find_next_zero_le_bit(const
unsigned long *addr,
+ unsigned long size, unsigned long offset)
{
- const unsigned long *addr = vaddr;
const unsigned long *p = addr + (offset >> 5);
int bit = offset & 31UL, res;
@@ -437,10 +440,9 @@ static inline int ext2_find_first_bit(const void
*vaddr, unsigned size)
return (p - addr) * 32 + res;
}
-static inline int ext2_find_next_bit(const void *vaddr, unsigned size,
- unsigned offset)
+static inline unsigned long generic_find_next_le_bit(const unsigned long *addr,
+ unsigned long size, unsigned long offset)
{
- const unsigned long *addr = vaddr;
const unsigned long *p = addr + (offset >> 5);
int bit = offset & 31UL, res;
--
1.6.0.4
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
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