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[Xen-changelog] Fix read-only mappings in blkback driver.

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Subject:	[Xen-changelog] Fix read-only mappings in blkback driver.
From:	BitKeeper Bot <riel@xxxxxxxxxxx>
Date:	Thu, 12 May 2005 09:28:21 +0000
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ChangeSet 1.1450, 2005/05/12 10:28:21+01:00, kaf24@xxxxxxxxxxxxxxxxxxxx

        Fix read-only mappings in blkback driver.
        Signed-off-by: Keir Fraser <keir@xxxxxxxxxxxxx>



 blkback.c |    7 +++----
 1 files changed, 3 insertions(+), 4 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     2005-05-12 
06:04:31 -04:00
+++ b/linux-2.6.11-xen-sparse/drivers/xen/blkback/blkback.c     2005-05-12 
06:04:31 -04:00
@@ -486,12 +486,11 @@
         preq.nr_sects += seg[i].nsec;
 
         aop[i].u.map_grant_ref.host_virt_addr = MMAP_VADDR(pending_idx, i);
-
         aop[i].u.map_grant_ref.dom = blkif->domid;
         aop[i].u.map_grant_ref.ref = blkif_gref_from_fas(fas);
-        aop[i].u.map_grant_ref.flags = ( GNTMAP_host_map   |
-                                       ( ( operation == READ ) ?
-                                             0 : GNTMAP_readonly ) );
+        aop[i].u.map_grant_ref.flags = GNTMAP_host_map;
+        if ( operation == READ )
+            aop[i].u.map_grant_ref.flags |= GNTMAP_readonly;
     }
 
     if ( unlikely(HYPERVISOR_grant_table_op(

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