[PATCH 1/2] libata: don't flush dcache on slab pages

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page_mapping() check this via VM_BUG_ON(PageSlab(page)) so we bug here
with the according debuging turned on.

Signed-off-by: Sebastian Andrzej Siewior <sebastian@xxxxxxxxxxxxx>
---
 drivers/ata/libata-sff.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/drivers/ata/libata-sff.c b/drivers/ata/libata-sff.c
index 561dec2..83ecf48 100644
--- a/drivers/ata/libata-sff.c
+++ b/drivers/ata/libata-sff.c
@@ -893,7 +893,7 @@ static void ata_pio_sector(struct ata_queued_cmd *qc)
 				       do_write);
 	}
 
-	if (!do_write)
+	if (!do_write && !PageSlab(page))
 		flush_dcache_page(page);
 
 	qc->curbytes += qc->sect_size;
-- 
1.6.6

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