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migration: switch to use QIOChannelNull for dummy channel 

This removes one further custom impl of QEMUFile, in favour of a
QIOChannel based impl.

Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
master
Daniel P. Berrangé 2022-06-20 12:01:46 +01:00 committed by Dr. David Alan Gilbert
parent 87e4276449
commit c0e0825c98
1 changed files with 4 additions and 3 deletions
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7
migration/ram.c
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@ -32,11 +32,13 @@
#include "qemu/bitmap.h"
#include "qemu/madvise.h"
#include "qemu/main-loop.h"
#include "io/channel-null.h"
#include "xbzrle.h"
#include "ram.h"
#include "migration.h"
#include "migration/register.h"
#include "migration/misc.h"
#include "migration/qemu-file-channel.h"
#include "qemu-file.h"
#include "postcopy-ram.h"
#include "page_cache.h"
@ -457,8 +459,6 @@ static QemuThread *compress_threads;
*/
static QemuMutex comp_done_lock;
static QemuCond comp_done_cond;
/* The empty QEMUFileOps will be used by file in CompressParam */
static const QEMUFileOps empty_ops = { };
static QEMUFile *decomp_file;
static DecompressParam *decomp_param;
@ -569,7 +569,8 @@ static int compress_threads_save_setup(void)
/* comp_param[i].file is just used as a dummy buffer to save data,
* set its ops to empty.
*/
comp_param[i].file = qemu_fopen_ops(NULL, &empty_ops, false);
comp_param[i].file = qemu_fopen_channel_output(
QIO_CHANNEL(qio_channel_null_new()));
comp_param[i].done = true;
comp_param[i].quit = false;
qemu_mutex_init(&comp_param[i].mutex);