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| author | Keir Fraser <keir.fraser@citrix.com> | 2008-08-04 11:07:17 +0100 |
|---|---|---|
| committer | Keir Fraser <keir.fraser@citrix.com> | 2008-08-04 11:07:17 +0100 |
| commit | c5c5a831765f5b18e36543bab1614d7d63b0bbee (patch) | |
| tree | 9eb94869131dc26509da91784c035511780e25d6 | |
| parent | f06e83208866f9e6cccee051704de153a6f97b3a (diff) | |
| download | xen-c5c5a831765f5b18e36543bab1614d7d63b0bbee.tar.gz xen-c5c5a831765f5b18e36543bab1614d7d63b0bbee.tar.bz2 xen-c5c5a831765f5b18e36543bab1614d7d63b0bbee.zip | |
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@eu.citrix.com>
| -rw-r--r-- | tools/ioemu/block-vbd.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/tools/ioemu/block-vbd.c b/tools/ioemu/block-vbd.c index a3465b748a..58015bdf00 100644 --- a/tools/ioemu/block-vbd.c +++ b/tools/ioemu/block-vbd.c @@ -273,6 +273,10 @@ static BlockDriverAIOCB *vbd_aio_flush(BlockDriverState *bs, 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); |