+ bitops-protect-find_first_zero_bit-properly.patch added to -mm tree

+ bitops-protect-find_first_zero_bit-properly.patch added to -mm tree

[akpm]

The patch titled
     Subject: bitops: protect find_first_{,zero}_bit properly
has been added to the -mm tree.  Its filename is
     bitops-protect-find_first_zero_bit-properly.patch

This patch should soon appear at
    https://ozlabs.org/~akpm/mmots/broken-out/bitops-protect-find_first_zero_bit-properly.patch
and later at
    https://ozlabs.org/~akpm/mmotm/broken-out/bitops-protect-find_first_zero_bit-properly.patch

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------------------------------------------------------
From: Yury Norov <yury.norov@gmail.com>
Subject: bitops: protect find_first_{,zero}_bit properly

Patch series "Resend bitmap patches".


This patch (of 17):

find_first_bit() and find_first_zero_bit() are not protected with ifdefs
as other functions in find.h.  It causes build errors on some platforms if
CONFIG_GENERIC_FIND_FIRST_BIT is enabled.

Link: https://lkml.kernel.org/r/20210814211713.180533-1-yury.norov@gmail.com
Link: https://lkml.kernel.org/r/20210814211713.180533-2-yury.norov@gmail.com
Fixes: 2cc7b6a44ac2 ("lib: add fast path for find_first_*_bit() and find_last_bit()")
Signed-off-by: Yury Norov <yury.norov@gmail.com>
Reported-by: kernel test robot <lkp@intel.com>
Tested-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Cc: Alexander Lobakin <alobakin@pm.me>
Cc: Alexey Klimov <aklimov@redhat.com>
Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Dennis Zhou <dennis@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Ulf Hansson <ulf.hansson@linaro.org>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 include/asm-generic/bitops/find.h |    5 +++++
 1 file changed, 5 insertions(+)

--- a/include/asm-generic/bitops/find.h~bitops-protect-find_first_zero_bit-properly
+++ a/include/asm-generic/bitops/find.h
@@ -97,6 +97,7 @@ unsigned long find_next_zero_bit(const u
 
 #ifdef CONFIG_GENERIC_FIND_FIRST_BIT
 
+#ifndef find_first_bit
 /**
  * find_first_bit - find the first set bit in a memory region
  * @addr: The address to start the search at
@@ -116,7 +117,9 @@ unsigned long find_first_bit(const unsig
 
 	return _find_first_bit(addr, size);
 }
+#endif
 
+#ifndef find_first_zero_bit
 /**
  * find_first_zero_bit - find the first cleared bit in a memory region
  * @addr: The address to start the search at
@@ -136,6 +139,8 @@ unsigned long find_first_zero_bit(const
 
 	return _find_first_zero_bit(addr, size);
 }
+#endif
+
 #else /* CONFIG_GENERIC_FIND_FIRST_BIT */
 
 #ifndef find_first_bit
_

Patches currently in -mm which might be from yury.norov@gmail.com are

bitops-protect-find_first_zero_bit-properly.patch
bitops-move-find_bit__le-functions-from-leh-to-findh.patch
include-move-findh-from-asm_generic-to-linux.patch
arch-remove-generic_find_first_bit-entirely.patch
lib-add-find_first_and_bit.patch
cpumask-use-find_first_and_bit.patch
all-replace-find_next_zero_bit-with-find_first_zero_bit-where-appropriate.patch
tools-sync-tools-bitmap-with-mother-linux.patch
cpumask-replace-cpumask_next_-with-cpumask_first_-where-appropriate.patch
include-linux-move-for_each_bit-macros-from-bitopsh-to-findh.patch
find-micro-optimize-for_each_setclear_bit.patch
replace-for_each__bit_from-with-for_each__bit-where-appropriate.patch
mm-percpu-micro-optimize-pcpu_is_populated.patch
bitmap-unify-find_bit-operations.patch
lib-bitmap-add-performance-test-for-bitmap_print_to_pagebuf.patch
vsprintf-rework-bitmap_list_string.patch