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-rw-r--r--lib/find_bit.c14
1 files changed, 13 insertions, 1 deletions
diff --git a/lib/find_bit.c b/lib/find_bit.c
index 32f99e9a67..0836bb3d76 100644
--- a/lib/find_bit.c
+++ b/lib/find_bit.c
@@ -87,7 +87,7 @@ out: \
if (sz % BITS_PER_LONG) \
tmp = (FETCH) & BITMAP_LAST_WORD_MASK(sz); \
found: \
- sz = min(idx * BITS_PER_LONG + fns(tmp, nr), sz); \
+ sz = idx * BITS_PER_LONG + fns(tmp, nr); \
out: \
sz; \
})
@@ -116,6 +116,18 @@ unsigned long _find_first_and_bit(const unsigned long *addr1,
EXPORT_SYMBOL(_find_first_and_bit);
#endif
+/*
+ * Find the first set bit in three memory regions.
+ */
+unsigned long _find_first_and_and_bit(const unsigned long *addr1,
+ const unsigned long *addr2,
+ const unsigned long *addr3,
+ unsigned long size)
+{
+ return FIND_FIRST_BIT(addr1[idx] & addr2[idx] & addr3[idx], /* nop */, size);
+}
+EXPORT_SYMBOL(_find_first_and_and_bit);
+
#ifndef find_first_zero_bit
/*
* Find the first cleared bit in a memory region.