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block: Eliminate bdrv_iterate(), use bdrv_next()

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Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Benoît Canet <benoit.canet@nodalink.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Markus Armbruster 2014-10-07 13:59:10 +02:00 committed by Kevin Wolf
parent b9fe8a7a12
commit fea68bb6e9
5 changed files with 37 additions and 67 deletions
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30
block-migration.c
View file

@ -343,12 +343,25 @@ static void unset_dirty_tracking(void)
}
}
static void init_blk_migration_it(void *opaque, BlockDriverState *bs)
static void init_blk_migration(QEMUFile *f)
{
BlockDriverState *bs;
BlkMigDevState *bmds;
int64_t sectors;
if (!bdrv_is_read_only(bs)) {
block_mig_state.submitted = 0;
block_mig_state.read_done = 0;
block_mig_state.transferred = 0;
block_mig_state.total_sector_sum = 0;
block_mig_state.prev_progress = -1;
block_mig_state.bulk_completed = 0;
block_mig_state.zero_blocks = migrate_zero_blocks();
for (bs = bdrv_next(NULL); bs; bs = bdrv_next(bs)) {
if (bdrv_is_read_only(bs)) {
continue;
}
sectors = bdrv_nb_sectors(bs);
if (sectors <= 0) {
return;
@ -378,19 +391,6 @@ static void init_blk_migration_it(void *opaque, BlockDriverState *bs)
}
}
static void init_blk_migration(QEMUFile *f)
{
block_mig_state.submitted = 0;
block_mig_state.read_done = 0;
block_mig_state.transferred = 0;
block_mig_state.total_sector_sum = 0;
block_mig_state.prev_progress = -1;
block_mig_state.bulk_completed = 0;
block_mig_state.zero_blocks = migrate_zero_blocks();
bdrv_iterate(init_blk_migration_it, NULL);
}
/* Called with no lock taken. */
static int blk_mig_save_bulked_block(QEMUFile *f)

9
block.c
View file

@ -3906,15 +3906,6 @@ BlockDriverState *bdrv_next(BlockDriverState *bs)
return QTAILQ_NEXT(bs, device_list);
}
void bdrv_iterate(void (*it)(void *opaque, BlockDriverState *bs), void *opaque)
{
BlockDriverState *bs;
QTAILQ_FOREACH(bs, &bdrv_states, device_list) {
it(opaque, bs);
}
}
const char *bdrv_get_device_name(BlockDriverState *bs)
{
return bs->device_name;

31
blockdev.c
View file

@ -2608,26 +2608,21 @@ fail:
qmp_output_visitor_cleanup(ov);
}
static void do_qmp_query_block_jobs_one(void *opaque, BlockDriverState *bs)
{
BlockJobInfoList **prev = opaque;
BlockJob *job = bs->job;
if (job) {
BlockJobInfoList *elem = g_new0(BlockJobInfoList, 1);
elem->value = block_job_query(bs->job);
(*prev)->next = elem;
*prev = elem;
}
}
BlockJobInfoList *qmp_query_block_jobs(Error **errp)
{
/* Dummy is a fake list element for holding the head pointer */
BlockJobInfoList dummy = {};
BlockJobInfoList *prev = &dummy;
bdrv_iterate(do_qmp_query_block_jobs_one, &prev);
return dummy.next;
BlockJobInfoList *head = NULL, **p_next = &head;
BlockDriverState *bs;
for (bs = bdrv_next(NULL); bs; bs = bdrv_next(bs)) {
if (bs->job) {
BlockJobInfoList *elem = g_new0(BlockJobInfoList, 1);
elem->value = block_job_query(bs->job);
*p_next = elem;
p_next = &elem->next;
}
}
return head;
}
QemuOptsList qemu_common_drive_opts = {

2
include/block/block.h
View file

@ -411,8 +411,6 @@ BlockDriverState *bdrv_lookup_bs(const char *device,
Error **errp);
bool bdrv_chain_contains(BlockDriverState *top, BlockDriverState *base);
BlockDriverState *bdrv_next(BlockDriverState *bs);
void bdrv_iterate(void (*it)(void *opaque, BlockDriverState *bs),
void *opaque);
int bdrv_is_encrypted(BlockDriverState *bs);
int bdrv_key_required(BlockDriverState *bs);
int bdrv_set_key(BlockDriverState *bs, const char *key);

32
monitor.c
View file

@ -4216,24 +4216,6 @@ static void file_completion(Monitor *mon, const char *input)
closedir(ffs);
}
typedef struct MonitorBlockComplete {
Monitor *mon;
const char *input;
} MonitorBlockComplete;
static void block_completion_it(void *opaque, BlockDriverState *bs)
{
const char *name = bdrv_get_device_name(bs);
MonitorBlockComplete *mbc = opaque;
Monitor *mon = mbc->mon;
const char *input = mbc->input;
if (input[0] == '\0' ||
!strncmp(name, (char *)input, strlen(input))) {
readline_add_completion(mon->rs, name);
}
}
static const char *next_arg_type(const char *typestr)
{
const char *p = strchr(typestr, ':');
@ -4671,9 +4653,9 @@ static void monitor_find_completion_by_table(Monitor *mon,
{
const char *cmdname;
int i;
const char *ptype, *str;
const char *ptype, *str, *name;
const mon_cmd_t *cmd;
MonitorBlockComplete mbs;
BlockDriverState *bs;
if (nb_args <= 1) {
/* command completion */
@ -4725,10 +4707,14 @@ static void monitor_find_completion_by_table(Monitor *mon,
break;
case 'B':
/* block device name completion */
mbs.mon = mon;
mbs.input = str;
readline_set_completion_index(mon->rs, strlen(str));
bdrv_iterate(block_completion_it, &mbs);
for (bs = bdrv_next(NULL); bs; bs = bdrv_next(bs)) {
name = bdrv_get_device_name(bs);
if (str[0] == '\0' ||
!strncmp(name, str, strlen(str))) {
readline_add_completion(mon->rs, name);
}
}
break;
case 's':
case 'S':