Recent changes (master)

PATCH Jens Axboe 1 participant 1 message Jul 13, 2018 Library code

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Jens Axboe

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2018-07-13 12:14 UTC #0 lore raw

The following changes since commit b8c7923917200c7c68c84c21549940d4be6b1398:

t/axmap: add longer overlap test case (2018-07-11 15:32:31 -0600)

are available in the git repository at:

git://git.kernel.dk/fio.git master

for you to fetch changes up to edfca254378e729035073af6ac0d9156565afebe:

axmap: optimize ulog64 usage in axmap_handler() (2018-07-12 08:33:14 -0600)

----------------------------------------------------------------
Jens Axboe (1):
axmap: optimize ulog64 usage in axmap_handler()

 lib/axmap.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

---

Diff of recent changes:

lib/axmap.c +4 -1

index 4047f23..454af0b 100644
@@ -156,10 +156,10 @@ static bool axmap_handler(struct axmap *axmap, uint64_t bit_nr,
 			  void *), void *data)
 {
 	struct axmap_level *al;
+	uint64_t index = bit_nr;
 	int i;
 
 	for (i = 0; i < axmap->nr_levels; i++) {
-		unsigned long index = ulog64(bit_nr, i);
 		unsigned long offset = index >> UNIT_SHIFT;
 		unsigned int bit = index & BLOCKS_PER_UNIT_MASK;

@@ -167,6 +167,9 @@ static bool axmap_handler(struct axmap *axmap, uint64_t bit_nr,
 
 		if (func(al, offset, bit, data))
 			return true;
+
+		if (index)
+			index >>= UNIT_SHIFT;
 	}
 
 	return false;