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From 290b8b6ab5f9a1f747be698e628c646c7c76b972 Mon Sep 17 00:00:00 2001
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From: John Snow <jsnow@redhat.com>
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Date: Wed, 10 Oct 2018 18:19:23 +0100
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Subject: [PATCH 02/49] nbd/server: fix NBD_CMD_CACHE
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RH-Author: John Snow <jsnow@redhat.com>
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Message-id: <20181010181924.30470-2-jsnow@redhat.com>
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Patchwork-id: 82576
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O-Subject: [RHEL8/rhel qemu-kvm PATCH 1/2] nbd/server: fix NBD_CMD_CACHE
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Bugzilla: 1636142
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RH-Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
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RH-Acked-by: Danilo de Paula <ddepaula@redhat.com>
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RH-Acked-by: Thomas Huth <thuth@redhat.com>
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From: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
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We should not go to structured-read branch on CACHE command, fix that.
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Bug introduced in bc37b06a5cde24 "nbd/server: introduce NBD_CMD_CACHE"
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with the whole feature and affects 3.0.0 release.
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Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
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CC: qemu-stable@nongnu.org
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Message-Id: <20181003144738.70670-1-vsementsov@virtuozzo.com>
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Reviewed-by: Eric Blake <eblake@redhat.com>
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[eblake: commit message typo fix]
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Signed-off-by: Eric Blake <eblake@redhat.com>
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(cherry picked from commit 2f454defc23e1be78f2a96bad2877ce7829f61b4)
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Signed-off-by: John Snow <jsnow@redhat.com>
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Signed-off-by: Danilo C. L. de Paula <ddepaula@redhat.com>
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---
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nbd/server.c | 3 ++-
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1 file changed, 2 insertions(+), 1 deletion(-)
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diff --git a/nbd/server.c b/nbd/server.c
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index ea5fe0e..1ce3f44 100644
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--- a/nbd/server.c
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+++ b/nbd/server.c
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@@ -2135,7 +2135,8 @@ static coroutine_fn int nbd_do_cmd_read(NBDClient *client, NBDRequest *request,
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}
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if (client->structured_reply && !(request->flags & NBD_CMD_FLAG_DF) &&
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- request->len) {
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+ request->len && request->type != NBD_CMD_CACHE)
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+ {
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return nbd_co_send_sparse_read(client, request->handle, request->from,
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data, request->len, errp);
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}
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--
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1.8.3.1
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