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[Xen-changelog] Fix multi-page I/O accesses in the blkback driver in cas

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Subject:	[Xen-changelog] Fix multi-page I/O accesses in the blkback driver in cases where we
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Date:	Mon, 16 May 2005 20:21:34 +0000
Delivery-date:	Mon, 16 May 2005 21:03:27 +0000
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ChangeSet 1.1159.258.132, 2005/05/16 21:21:34+01:00, kaf24@xxxxxxxxxxxxxxxxxxxx

        Fix multi-page I/O accesses in the blkback driver in cases where we
        receive partial-completion callbacks.
        Signed-off-by: Vincent Hanquez <vincent@xxxxxxxxxxxxx>
        Signed-off-by: Keir Fraser <keir@xxxxxxxxxxxxx>



 blkback.c |    5 +++--
 1 files changed, 3 insertions(+), 2 deletions(-)


diff -Nru a/linux-2.6.11-xen-sparse/drivers/xen/blkback/blkback.c 
b/linux-2.6.11-xen-sparse/drivers/xen/blkback/blkback.c
--- a/linux-2.6.11-xen-sparse/drivers/xen/blkback/blkback.c     2005-05-16 
17:04:05 -04:00
+++ b/linux-2.6.11-xen-sparse/drivers/xen/blkback/blkback.c     2005-05-16 
17:04:05 -04:00
@@ -252,8 +252,9 @@
 #else
 static int end_block_io_op(struct bio *bio, unsigned int done, int error)
 {
-    if ( done || error )
-        __end_block_io_op(bio->bi_private, (done && !error));
+    if ( bio->bi_size != 0 )
+        return 1;
+    __end_block_io_op(bio->bi_private, !error);
     bio_put(bio);
     return error;
 }

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