[PATCH v4 22/25] tools: bitmap: add missing bitmap_copy() implementation
From: "Lorenzo Stoakes (Oracle)" <ljs@kernel.org>
Date: 2026-03-20 19:39:35
Also in:
linux-fsdevel, linux-mips, linux-mm, linux-riscv, linux-s390, linux-um, lkml, loongarch, selinux
Subsystem:
bitmap api, the rest · Maintainers:
Yury Norov, Linus Torvalds
I need this for changes I am making to keep the VMA tests running correctly. Signed-off-by: Lorenzo Stoakes (Oracle) <ljs@kernel.org> --- tools/include/linux/bitmap.h | 11 +++++++++++ 1 file changed, 11 insertions(+)
diff --git a/tools/include/linux/bitmap.h b/tools/include/linux/bitmap.h
index 845eda759f67..5cb4f3942fd3 100644
--- a/tools/include/linux/bitmap.h
+++ b/tools/include/linux/bitmap.h@@ -55,6 +55,17 @@ static inline void bitmap_fill(unsigned long *dst, unsigned int nbits) dst[nlongs - 1] = BITMAP_LAST_WORD_MASK(nbits); } +static __always_inline +void bitmap_copy(unsigned long *dst, const unsigned long *src, unsigned int nbits) +{ + unsigned int len = bitmap_size(nbits); + + if (small_const_nbits(nbits)) + *dst = *src; + else + memcpy(dst, src, len); +} + static inline bool bitmap_empty(const unsigned long *src, unsigned int nbits) { if (small_const_nbits(nbits))
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2.53.0