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Remove unused code

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blk_mig_save_bulked_block is never called with sync flag. Remove the sync
flag. Calculate bulk completion during blk_mig_save_bulked_block.
Remove unused constants.

Signed-off-by: Liran Schour <lirans@il.ibm.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This commit is contained in:
Liran Schour 2010-01-26 10:31:45 +02:00 committed by Anthony Liguori
parent 7b8f3b7834
commit e970ec0b5e
1 changed files with 18 additions and 43 deletions
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61
block-migration.c
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@ -26,9 +26,6 @@
#define BLK_MIG_FLAG_PROGRESS 0x04
#define MAX_IS_ALLOCATED_SEARCH 65536
#define MAX_BLOCKS_READ 10000
#define BLOCKS_READ_CHANGE 100
#define INITIAL_BLOCKS_READ 100
//#define DEBUG_BLK_MIGRATION
@ -72,6 +69,7 @@ typedef struct BlkMigState {
int transferred;
int64_t total_sector_sum;
int prev_progress;
int bulk_completed;
} BlkMigState;
static BlkMigState block_mig_state;
@ -138,7 +136,7 @@ static void blk_mig_read_cb(void *opaque, int ret)
}
static int mig_save_device_bulk(Monitor *mon, QEMUFile *f,
BlkMigDevState *bmds, int is_async)
BlkMigDevState *bmds)
{
int64_t total_sectors = bmds->total_sectors;
int64_t cur_sector = bmds->cur_sector;
@ -175,27 +173,16 @@ static int mig_save_device_bulk(Monitor *mon, QEMUFile *f,
blk->bmds = bmds;
blk->sector = cur_sector;
if (is_async) {
blk->iov.iov_base = blk->buf;
blk->iov.iov_len = nr_sectors * BDRV_SECTOR_SIZE;
qemu_iovec_init_external(&blk->qiov, &blk->iov, 1);
blk->iov.iov_base = blk->buf;
blk->iov.iov_len = nr_sectors * BDRV_SECTOR_SIZE;
qemu_iovec_init_external(&blk->qiov, &blk->iov, 1);
blk->aiocb = bdrv_aio_readv(bs, cur_sector, &blk->qiov,
nr_sectors, blk_mig_read_cb, blk);
if (!blk->aiocb) {
goto error;
}
block_mig_state.submitted++;
} else {
if (bdrv_read(bs, cur_sector, blk->buf, nr_sectors) < 0) {
goto error;
}
blk_send(f, blk);
qemu_free(blk->buf);
qemu_free(blk);
blk->aiocb = bdrv_aio_readv(bs, cur_sector, &blk->qiov,
nr_sectors, blk_mig_read_cb, blk);
if (!blk->aiocb) {
goto error;
}
block_mig_state.submitted++;
bdrv_reset_dirty(bs, cur_sector, nr_sectors);
bmds->cur_sector = cur_sector + nr_sectors;
@ -229,6 +216,7 @@ static void init_blk_migration(Monitor *mon, QEMUFile *f)
block_mig_state.transferred = 0;
block_mig_state.total_sector_sum = 0;
block_mig_state.prev_progress = -1;
block_mig_state.bulk_completed = 0;
for (bs = bdrv_first; bs != NULL; bs = bs->next) {
if (bs->type == BDRV_TYPE_HD) {
@ -260,7 +248,7 @@ static void init_blk_migration(Monitor *mon, QEMUFile *f)
}
}
static int blk_mig_save_bulked_block(Monitor *mon, QEMUFile *f, int is_async)
static int blk_mig_save_bulked_block(Monitor *mon, QEMUFile *f)
{
int64_t completed_sector_sum = 0;
BlkMigDevState *bmds;
@ -269,7 +257,7 @@ static int blk_mig_save_bulked_block(Monitor *mon, QEMUFile *f, int is_async)
QSIMPLEQ_FOREACH(bmds, &block_mig_state.bmds_list, entry) {
if (bmds->bulk_completed == 0) {
if (mig_save_device_bulk(mon, f, bmds, is_async) == 1) {
if (mig_save_device_bulk(mon, f, bmds) == 1) {
/* completed bulk section for this device */
bmds->bulk_completed = 1;
}
@ -362,19 +350,7 @@ static void flush_blks(QEMUFile* f)
static int is_stage2_completed(void)
{
BlkMigDevState *bmds;
if (block_mig_state.submitted > 0) {
return 0;
}
QSIMPLEQ_FOREACH(bmds, &block_mig_state.bmds_list, entry) {
if (bmds->bulk_completed == 0) {
return 0;
}
}
return 1;
return (block_mig_state.submitted == 0 && block_mig_state.bulk_completed);
}
static void blk_mig_cleanup(Monitor *mon)
@ -432,8 +408,9 @@ static int block_save_live(Monitor *mon, QEMUFile *f, int stage, void *opaque)
while ((block_mig_state.submitted +
block_mig_state.read_done) * BLOCK_SIZE <
qemu_file_get_rate_limit(f)) {
if (blk_mig_save_bulked_block(mon, f, 1) == 0) {
/* no more bulk blocks for now */
if (blk_mig_save_bulked_block(mon, f) == 0) {
/* finished saving bulk on all devices */
block_mig_state.bulk_completed = 1;
break;
}
}
@ -446,9 +423,7 @@ static int block_save_live(Monitor *mon, QEMUFile *f, int stage, void *opaque)
}
if (stage == 3) {
while (blk_mig_save_bulked_block(mon, f, 0) != 0) {
/* empty */
}
/* we know for sure that save bulk is completed */
blk_mig_save_dirty_blocks(mon, f);
blk_mig_cleanup(mon);