From 70f17b6bd18dfe33f40db7573baa663b866be6ba Mon Sep 17 00:00:00 2001 From: Lars Ellenberg Date: Mon, 3 Sep 2012 14:08:35 +0200 Subject: [PATCH] drbd: differentiate early and later "postponing" of requests We use the RQ_POSTPONED flag to mark a request for several reasons. It may be a conflicting request in a dual-primary setup, where conflict detection and resolution on the peer decided that this request needs to be re-submitted, it needs to re-enter drbd_make_request() to fix the data divergence caused by these conflicting, partially overlapping, quasi-simultaneous requests. In this case we need to mark the corresponding area as out-of-sync, before we call drbd_al_complete_io(). We also use the RQ_POSTPONED flag to just "push back" a request, before even processing it, if IO is suspended for some reason. In this case, as this request was neither submitted nor sent yet, we must not touch the bitmap. Signed-off-by: Philipp Reisner Signed-off-by: Lars Ellenberg --- Reading git-format-patch failed