[parted-devel] [PATCH 6/6] libparted: fix optimal IO alignment

[Phillip Susi]

There were several apparently incorrect tests that would
cause certain kernel supplied optimal io size to be discarded in
favor of the default 1MB alignment, such as 1.5 MB.  Remove these
tests and accept the kernel value if it is non zero.
---
 libparted/arch/linux.c |   10 +---------
 1 file changed, 1 insertion(+), 9 deletions(-)

diff --git a/libparted/arch/linux.c b/libparted/arch/linux.c
index fd4ba32..bbb346a 100644
--- a/libparted/arch/linux.c
+++ b/libparted/arch/linux.c
@@ -2986,15 +2986,7 @@ linux_get_optimum_alignment(const PedDevice *dev)
            previous logic. */
         unsigned long optimal_io = blkid_topology_get_optimal_io_size(tp);
         unsigned long minimum_io = blkid_topology_get_minimum_io_size(tp);
-        if (
-            (!optimal_io && !minimum_io)
-	    || (optimal_io && PED_DEFAULT_ALIGNMENT % optimal_io == 0
-		&& minimum_io && PED_DEFAULT_ALIGNMENT % minimum_io == 0)
-	    || (!minimum_io && optimal_io
-		&& PED_DEFAULT_ALIGNMENT % optimal_io == 0)
-	    || (!optimal_io && minimum_io
-		&& PED_DEFAULT_ALIGNMENT % minimum_io == 0)
-           ) {
+	if (!optimal_io) {
             /* DASD needs to use minimum alignment */
             if (dev->type == PED_DEVICE_DASD)
                 return linux_get_minimum_alignment(dev);
-- 
1.7.10.4