xprtrdma: Eliminate per-transport "max pages"

[linux.git] / lib / bitmap.c

diff --git a/lib/bitmap.c b/lib/bitmap.c
index f9e834841e941826392ebc6ccf5650186bf657fd..4250519d7d1c53e459f49823aa1b518c331fe4cc 100644 (file)
--- a/lib/bitmap.c
+++ b/lib/bitmap.c
@@ -222,6 +222,18 @@ int __bitmap_andnot(unsigned long *dst, const unsigned long *bitmap1,
 }
 EXPORT_SYMBOL(__bitmap_andnot);
 
+void __bitmap_replace(unsigned long *dst,
+                     const unsigned long *old, const unsigned long *new,
+                     const unsigned long *mask, unsigned int nbits)
+{
+       unsigned int k;
+       unsigned int nr = BITS_TO_LONGS(nbits);
+
+       for (k = 0; k < nr; k++)
+               dst[k] = (old[k] & ~mask[k]) | (new[k] & mask[k]);
+}
+EXPORT_SYMBOL(__bitmap_replace);
+
 int __bitmap_intersects(const unsigned long *bitmap1,
                        const unsigned long *bitmap2, unsigned int bits)
 {