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xen/blkback: Check for proper operation.

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The patch titled: "xen/blkback: Fix the inhibition to map pages
when discarding sector ranges." had the right idea except that
it used the wrong comparison operator. It had == instead of !=.

This fixes the bug where all (except discard) operations would
have been ignored.

Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
This commit is contained in:
Konrad Rzeszutek Wilk 2011-10-14 12:13:05 -04:00
parent 64391b2536
commit dda1852802
1 changed files with 1 additions and 1 deletions
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2
drivers/block/xen-blkback/blkback.c
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@ -707,7 +707,7 @@ static int dispatch_rw_block_io(struct xen_blkif *blkif,
* the hypercall to unmap the grants - that is all done in
* xen_blkbk_unmap.
*/
if (operation == REQ_DISCARD && xen_blkbk_map(req, pending_req, seg))
if (operation != REQ_DISCARD && xen_blkbk_map(req, pending_req, seg))
goto fail_flush;
/*