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rbd: don't put snap_context twice in rbd_queue_workfn()

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Commit 4e752f0ab0 ("rbd: access snapshot context and mapping size
safely") moved ceph_get_snap_context() out of rbd_img_request_create()
and into rbd_queue_workfn(), adding a ceph_put_snap_context() to the
error path in rbd_queue_workfn().  However, rbd_img_request_create()
consumes a ref on snapc, so calling ceph_put_snap_context() after
a successful rbd_img_request_create() leads to an extra put.  Fix it.

Cc: [email protected] # 3.18+
Signed-off-by: Ilya Dryomov <[email protected]>
Reviewed-by: Josh Durgin <[email protected]>
This commit is contained in:
Ilya Dryomov 2015-11-27 19:23:24 +01:00
commit 70b16db86f
1 changed files with 1 additions and 0 deletions
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1
drivers/block/rbd.c
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@ -3442,6 +3442,7 @@ static void rbd_queue_workfn(struct work_struct *work)
goto err_rq;
}
img_request->rq = rq;
snapc = NULL; /* img_request consumes a ref */
if (op_type == OBJ_OP_DISCARD)
result = rbd_img_request_fill(img_request, OBJ_REQUEST_NODATA,