KVM: VMX: Enable EPT 1GB page support

[pandora-kernel.git] / fs / bio.c

diff --git a/fs/bio.c b/fs/bio.c
index 12429c9..88094af 100644 (file)
--- a/fs/bio.c
+++ b/fs/bio.c
@@ -542,13 +542,18 @@ static int __bio_add_page(struct request_queue *q, struct bio *bio, struct page
 
                if (page == prev->bv_page &&
                    offset == prev->bv_offset + prev->bv_len) {
+                       unsigned int prev_bv_len = prev->bv_len;
                        prev->bv_len += len;
 
                        if (q->merge_bvec_fn) {
                                struct bvec_merge_data bvm = {
+                                       /* prev_bvec is already charged in
+                                          bi_size, discharge it in order to
+                                          simulate merging updated prev_bvec
+                                          as new bvec. */
                                        .bi_bdev = bio->bi_bdev,
                                        .bi_sector = bio->bi_sector,
-                                       .bi_size = bio->bi_size,
+                                       .bi_size = bio->bi_size - prev_bv_len,
                                        .bi_rw = bio->bi_rw,
                                };