Sparc64 expect 64 bit types to be aligned to 8. This patch ensure that
memory allocated by 'rds_page_remainder_alloc' will be aligned to 8.
This patch fix issue found in 'rds_ib_cong_recv' when accessing
unaligned memory using uint64_t pointer.
Signed-off-by: Shamir Rabinovitch <shamir.rabinovi...@oracle.com>
Reviewed-by: Wengang Wang <wen.gang.w...@oracle.com>
Reviewed-by: Ajaykumar Hotchandani <ajaykumar.hotchand...@oracle.com>
Acked-by: Santosh Shilimkar <santosh.shilim...@oracle.com>
Tested-by: Anand Bibhuti <anand.bibh...@oracle.com>
---
net/rds/page.c | 5 +++--
1 files changed, 3 insertions(+), 2 deletions(-)
diff --git a/net/rds/page.c b/net/rds/page.c
index 616f21f..4813e1f 100644
--- a/net/rds/page.c
+++ b/net/rds/page.c
@@ -135,8 +135,9 @@ int rds_page_remainder_alloc(struct scatterlist *scat,
unsigned long bytes,
if (rem->r_offset != 0)
rds_stats_inc(s_page_remainder_hit);
- rem->r_offset += bytes;
- if (rem->r_offset == PAGE_SIZE) {
+ /* fix 'Kernel unaligned access' on sparc64 */
+ rem->r_offset += ALIGN(bytes, 8);
+ if (rem->r_offset >= PAGE_SIZE) {
__free_page(rem->r_page);
rem->r_page = NULL;
}
--
1.7.1
