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From 44d255b6cc7315537e66f1d97e4893e321b694b8 Mon Sep 17 00:00:00 2001
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Message-Id: <44d255b6cc7315537e66f1d97e4893e321b694b8@dist-git>
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From: Peter Krempa <pkrempa@redhat.com>
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Date: Tue, 4 Feb 2020 15:08:02 +0100
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Subject: [PATCH] qemuMigrationCookieAddNBD: Exit early if there are no disks
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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Refactor the logic to skip the body of the function if there's nothing
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to do.
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Signed-off-by: Peter Krempa <pkrempa@redhat.com>
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Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
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(cherry picked from commit bdff9d4513694da8d9b2bb60a1f808fb1c286388)
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https://bugzilla.redhat.com/show_bug.cgi?id=1793263
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Message-Id: <b12c9b8c4ca78e848e43ab4ae7706a5694cfb49c.1580824112.git.pkrempa@redhat.com>
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Reviewed-by: Ján Tomko <jtomko@redhat.com>
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---
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 src/qemu/qemu_migration_cookie.c | 12 +++++++-----
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 1 file changed, 7 insertions(+), 5 deletions(-)
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diff --git a/src/qemu/qemu_migration_cookie.c b/src/qemu/qemu_migration_cookie.c
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index 299bf17c9e..73ae815818 100644
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--- a/src/qemu/qemu_migration_cookie.c
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+++ b/src/qemu/qemu_migration_cookie.c
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@@ -464,8 +464,13 @@ qemuMigrationCookieAddNBD(qemuMigrationCookiePtr mig,
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     if (VIR_ALLOC(mig->nbd) < 0)
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         return -1;
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-    if (vm->def->ndisks &&
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-        VIR_ALLOC_N(mig->nbd->disks, vm->def->ndisks) < 0)
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+    mig->nbd->port = priv->nbdPort;
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+    mig->flags |= QEMU_MIGRATION_COOKIE_NBD;
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+
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+    if (vm->def->ndisks == 0)
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+        return 0;
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+
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+    if (VIR_ALLOC_N(mig->nbd->disks, vm->def->ndisks) < 0)
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         return -1;
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     mig->nbd->ndisks = 0;
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@@ -496,9 +501,6 @@ qemuMigrationCookieAddNBD(qemuMigrationCookiePtr mig,
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         mig->nbd->ndisks++;
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     }
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-    mig->nbd->port = priv->nbdPort;
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-    mig->flags |= QEMU_MIGRATION_COOKIE_NBD;
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-
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     ret = 0;
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  cleanup:
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     virHashFree(stats);
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-- 
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2.25.0
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