shost->hostdata can contain arbitrary data including DMA target
buffers. Align it to cacheline.
Signed-off-by: Tejun Heo <htejun@xxxxxxxxx>
---
James, what do you think?
include/scsi/scsi_host.h | 8 +++-----
1 file changed, 3 insertions(+), 5 deletions(-)
diff --git a/include/scsi/scsi_host.h b/include/scsi/scsi_host.h
index 5c58d59..3876d24 100644
--- a/include/scsi/scsi_host.h
+++ b/include/scsi/scsi_host.h
@@ -663,12 +663,10 @@ struct Scsi_Host {
void *shost_data;
/*
- * We should ensure that this is aligned, both for better performance
- * and also because some compilers (m68k) don't automatically force
- * alignment to a long boundary.
+ * Used for storage of host specific stuff. As it may contain
+ * arbitrary data, align it to cacheline.
*/
- unsigned long hostdata[0] /* Used for storage of host specific stuff */
- __attribute__ ((aligned (sizeof(unsigned long))));
+ unsigned long hostdata[0] ____cacheline_aligned;
};
#define class_to_shost(d) \
-
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