bcachefs-tools: Use sysinfo(2) directly to implement si_meminfo()

[bcachefs-tools-debian] / include / linux / bitmap.h

diff --git a/include/linux/bitmap.h b/include/linux/bitmap.h
index 80e8ecda27da7405f4785188067fbddf23ca0f1c..db2dfdb2ef051a634794dfce9a2bf61bdd7eb6f4 100644 (file)
--- a/include/linux/bitmap.h
+++ b/include/linux/bitmap.h
@@ -135,4 +135,12 @@ static inline unsigned long find_next_zero_bit(const unsigned long *addr, unsign
 #define find_first_bit(addr, size) find_next_bit((addr), (size), 0)
 #define find_first_zero_bit(addr, size) find_next_zero_bit((addr), (size), 0)
 
+static inline bool bitmap_empty(const unsigned long *src, unsigned nbits)
+{
+       if (small_const_nbits(nbits))
+               return ! (*src & BITMAP_LAST_WORD_MASK(nbits));
+
+       return find_first_bit(src, nbits) == nbits;
+}
+
 #endif /* _PERF_BITOPS_H */