The patch titled
Subject: bitops: introduce for_each_clear_bit()
has been removed from the -mm tree. Its filename was
bitops-introduce-for_each_clear_bit.patch
This patch was dropped because it was merged into mainline or a subsystem tree
The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/
------------------------------------------------------
From: Akinobu Mita <akinobu.mita@xxxxxxxxx>
Subject: bitops: introduce for_each_clear_bit()
Introduce for_each_clear_bit() and for_each_clear_bit_from(). They are
similar to for_each_set_bit() and list_for_each_set_bit_from(), but they
iterate over all the cleared bits in a memory region.
Signed-off-by: Akinobu Mita <akinobu.mita@xxxxxxxxx>
Cc: Robert Richter <robert.richter@xxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxxxxx>
Cc: "H. Peter Anvin" <hpa@xxxxxxxxx>
Cc: David Woodhouse <dwmw2@xxxxxxxxxxxxx>
Cc: Martin Schwidefsky <schwidefsky@xxxxxxxxxx>
Cc: Heiko Carstens <heiko.carstens@xxxxxxxxxx>
Cc: Stefano Panella <stefano.panella@xxxxxxx>
Cc: David Vrabel <david.vrabel@xxxxxxx>
Cc: Sergei Shtylyov <sshtylyov@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/bitops.h | 11 +++++++++++
1 file changed, 11 insertions(+)
diff -puN include/linux/bitops.h~bitops-introduce-for_each_clear_bit include/linux/bitops.h
--- a/include/linux/bitops.h~bitops-introduce-for_each_clear_bit
+++ a/include/linux/bitops.h
@@ -32,6 +32,17 @@ extern unsigned long __sw_hweight64(__u6
(bit) < (size); \
(bit) = find_next_bit((addr), (size), (bit) + 1))
+#define for_each_clear_bit(bit, addr, size) \
+ for ((bit) = find_first_zero_bit((addr), (size)); \
+ (bit) < (size); \
+ (bit) = find_next_zero_bit((addr), (size), (bit) + 1))
+
+/* same as for_each_clear_bit() but use bit as value to start with */
+#define for_each_clear_bit_from(bit, addr, size) \
+ for ((bit) = find_next_zero_bit((addr), (size), (bit)); \
+ (bit) < (size); \
+ (bit) = find_next_zero_bit((addr), (size), (bit) + 1))
+
static __inline__ int get_bitmask_order(unsigned int count)
{
int order;
_
Patches currently in -mm which might be from akinobu.mita@xxxxxxxxx are
origin.patch
linux-next.patch
ocfs2-use-find_last_bit.patch
ocfs2-use-bitmap_weight.patch
sysctl-use-bitmap-library-functions.patch
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