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[PATCH v3 1/8] blockdev: merge drive_backup_prepare with do_drive_backup
From: |
Sergio Lopez |
Subject: |
[PATCH v3 1/8] blockdev: merge drive_backup_prepare with do_drive_backup |
Date: |
Tue, 12 Nov 2019 12:30:05 +0100 |
Consolidate drive_backup_prepare() with do_drive_backup() as a first
step towards streamlining all functionality through transactions.
Signed-off-by: Sergio Lopez <address@hidden>
---
blockdev.c | 58 +++++++++++++++---------------------------------------
1 file changed, 16 insertions(+), 42 deletions(-)
diff --git a/blockdev.c b/blockdev.c
index 8e029e9c01..5d30aff1e5 100644
--- a/blockdev.c
+++ b/blockdev.c
@@ -1764,40 +1764,6 @@ typedef struct DriveBackupState {
static BlockJob *do_drive_backup(DriveBackup *backup, JobTxn *txn,
Error **errp);
-static void drive_backup_prepare(BlkActionState *common, Error **errp)
-{
- DriveBackupState *state = DO_UPCAST(DriveBackupState, common, common);
- BlockDriverState *bs;
- DriveBackup *backup;
- AioContext *aio_context;
- Error *local_err = NULL;
-
- assert(common->action->type == TRANSACTION_ACTION_KIND_DRIVE_BACKUP);
- backup = common->action->u.drive_backup.data;
-
- bs = bdrv_lookup_bs(backup->device, backup->device, errp);
- if (!bs) {
- return;
- }
-
- aio_context = bdrv_get_aio_context(bs);
- aio_context_acquire(aio_context);
-
- /* Paired with .clean() */
- bdrv_drained_begin(bs);
-
- state->bs = bs;
-
- state->job = do_drive_backup(backup, common->block_job_txn, &local_err);
- if (local_err) {
- error_propagate(errp, local_err);
- goto out;
- }
-
-out:
- aio_context_release(aio_context);
-}
-
static void drive_backup_commit(BlkActionState *common)
{
DriveBackupState *state = DO_UPCAST(DriveBackupState, common, common);
@@ -3587,13 +3553,13 @@ static BlockJob *do_backup_common(BackupCommon *backup,
return job;
}
-static BlockJob *do_drive_backup(DriveBackup *backup, JobTxn *txn,
- Error **errp)
+static void drive_backup_prepare(BlkActionState *common, Error **errp)
{
+ DriveBackupState *state = DO_UPCAST(DriveBackupState, common, common);
+ DriveBackup *backup;
BlockDriverState *bs;
BlockDriverState *target_bs;
BlockDriverState *source = NULL;
- BlockJob *job = NULL;
AioContext *aio_context;
QDict *options;
Error *local_err = NULL;
@@ -3601,23 +3567,29 @@ static BlockJob *do_drive_backup(DriveBackup *backup,
JobTxn *txn,
int64_t size;
bool set_backing_hd = false;
+ assert(common->action->type == TRANSACTION_ACTION_KIND_DRIVE_BACKUP);
+ backup = common->action->u.drive_backup.data;
+
if (!backup->has_mode) {
backup->mode = NEW_IMAGE_MODE_ABSOLUTE_PATHS;
}
bs = bdrv_lookup_bs(backup->device, backup->device, errp);
if (!bs) {
- return NULL;
+ return;
}
if (!bs->drv) {
error_setg(errp, "Device has no medium");
- return NULL;
+ return;
}
aio_context = bdrv_get_aio_context(bs);
aio_context_acquire(aio_context);
+ /* Paired with .clean() */
+ bdrv_drained_begin(bs);
+
if (!backup->has_format) {
backup->format = backup->mode == NEW_IMAGE_MODE_EXISTING ?
NULL : (char*) bs->drv->format_name;
@@ -3687,14 +3659,16 @@ static BlockJob *do_drive_backup(DriveBackup *backup,
JobTxn *txn,
}
}
- job = do_backup_common(qapi_DriveBackup_base(backup),
- bs, target_bs, aio_context, txn, errp);
+ state->bs = bs;
+
+ state->job = do_backup_common(qapi_DriveBackup_base(backup),
+ bs, target_bs, aio_context,
+ common->block_job_txn, errp);
unref:
bdrv_unref(target_bs);
out:
aio_context_release(aio_context);
- return job;
}
void qmp_drive_backup(DriveBackup *arg, Error **errp)
--
2.23.0
- [PATCH v3 0/8] blockdev: avoid acquiring AioContext lock twice at do_drive_backup and do_blockdev_backup, Sergio Lopez, 2019/11/12
- [PATCH v3 1/8] blockdev: merge drive_backup_prepare with do_drive_backup,
Sergio Lopez <=
- [PATCH v3 4/8] blockdev: change qmp_drive_backup to make use of transactions, Sergio Lopez, 2019/11/12
- [PATCH v3 2/8] blockdev: fix coding style issues in drive_backup_prepare, Sergio Lopez, 2019/11/12
- [PATCH v3 8/8] blockdev: honor bdrv_try_set_aio_context() context requirements, Sergio Lopez, 2019/11/12
- [PATCH v3 6/8] blockdev: place blockdev_backup_prepare with the other related transaction helpers, Sergio Lopez, 2019/11/12
- [PATCH v3 3/8] blockdev: place drive_backup_prepare with the other related transaction functions, Sergio Lopez, 2019/11/12
- [PATCH v3 7/8] blockdev: change qmp_blockdev_backup to make use of transactions, Sergio Lopez, 2019/11/12
- [PATCH v3 5/8] blockdev: merge blockdev_backup_prepare with do_blockdev_backup, Sergio Lopez, 2019/11/12
- Re: [PATCH v3 0/8] blockdev: avoid acquiring AioContext lock twice at do_drive_backup and do_blockdev_backup, no-reply, 2019/11/12