Merge branch 'master' into for-2.6.33

1 files changed, 21 insertions, 2 deletions

diff --git a/drivers/block/aoe/aoecmd.c b/drivers/block/aoe/aoecmd.c
index 965ece2c7e4d..13bb69d2abb3 100644
--- a/drivers/block/aoe/aoecmd.c
+++ b/drivers/block/aoe/aoecmd.c
@@ -735,6 +735,21 @@ diskstats(struct gendisk *disk, struct bio *bio, ulong duration, sector_t sector
         part_stat_unlock();
 }
 
+/*
+ * Ensure we don't create aliases in VI caches
+ */
+static inline void
+killalias(struct bio *bio)
+{
+        struct bio_vec *bv;
+        int i;
+
+        if (bio_data_dir(bio) == READ)
+                __bio_for_each_segment(bv, bio, i, 0) {
+                        flush_dcache_page(bv->bv_page);
+                }
+}
+
 void
 aoecmd_ata_rsp(struct sk_buff *skb)
 {
@@ -853,8 +868,12 @@ aoecmd_ata_rsp(struct sk_buff *skb)
 
         if (buf && --buf->nframesout == 0 && buf->resid == 0) {
                 diskstats(d->gd, buf->bio, jiffies - buf->stime, buf->sector);
-                n = (buf->flags & BUFFL_FAIL) ? -EIO : 0;
-                bio_endio(buf->bio, n);
+                if (buf->flags & BUFFL_FAIL)
+                        bio_endio(buf->bio, -EIO);
+                else {
+                        killalias(buf->bio);
+                        bio_endio(buf->bio, 0);
+                }
                 mempool_free(buf, d->bufpool);
         }