[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] [PATCH] stubdom: fix read-only disks access
stubdom: fix read-only disks access There is no need for a flush on read-only disks. It would actually even error out and disturb the guest. Signed-off-by: Samuel Thibault <samuel.thibault@xxxxxxxxxxxxx> diff -r 3dedb6209991 tools/ioemu/block-vbd.c --- a/tools/ioemu/block-vbd.c Fri Aug 01 12:18:02 2008 +0100 +++ b/tools/ioemu/block-vbd.c Fri Aug 01 19:16:52 2008 +0100 @@ -273,6 +273,10 @@ static BlockDriverAIOCB *vbd_aio_flush(B BDRVVbdState *s = bs->opaque; VbdAIOCB *acb = NULL; + if (s->info.mode == O_RDONLY) { + cb(opaque, 0); + return NULL; + } if (s->info.barrier == 1) { acb = vbd_aio_setup(bs, 0, NULL, 0, s->info.flush == 1 ? vbd_nop_cb : cb, opaque); _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
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