diff options
| author | Kevin Wolf <kwolf@redhat.com> | 2016-03-22 18:58:50 +0100 |
|---|---|---|
| committer | Kevin Wolf <kwolf@redhat.com> | 2016-05-19 16:45:31 +0200 |
| commit | 7c8eece45b10fc9b716850345118ed6fa8d17887 (patch) | |
| tree | a800da22963a8ff1d036a97a3281ddd555d07c91 /block/snapshot.c | |
| parent | dde33812a83b9c55b180a85411bfc4d6c39e8b11 (diff) | |
| download | qemu-7c8eece45b10fc9b716850345118ed6fa8d17887.zip | |
block: Avoid bs->blk in bdrv_next()
We need to introduce a separate BdrvNextIterator struct that can keep
more state than just the current BDS in order to avoid using the bs->blk
pointer.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Diffstat (limited to 'block/snapshot.c')
| -rw-r--r-- | block/snapshot.c | 30 |
1 files changed, 18 insertions, 12 deletions
diff --git a/block/snapshot.c b/block/snapshot.c index e9d721df68..3917ec5c91 100644 --- a/block/snapshot.c +++ b/block/snapshot.c @@ -373,9 +373,10 @@ int bdrv_snapshot_load_tmp_by_id_or_name(BlockDriverState *bs, bool bdrv_all_can_snapshot(BlockDriverState **first_bad_bs) { bool ok = true; - BlockDriverState *bs = NULL; + BlockDriverState *bs; + BdrvNextIterator *it = NULL; - while (ok && (bs = bdrv_next(bs))) { + while (ok && (it = bdrv_next(it, &bs))) { AioContext *ctx = bdrv_get_aio_context(bs); aio_context_acquire(ctx); @@ -393,10 +394,11 @@ int bdrv_all_delete_snapshot(const char *name, BlockDriverState **first_bad_bs, Error **err) { int ret = 0; - BlockDriverState *bs = NULL; + BlockDriverState *bs; + BdrvNextIterator *it = NULL; QEMUSnapshotInfo sn1, *snapshot = &sn1; - while (ret == 0 && (bs = bdrv_next(bs))) { + while (ret == 0 && (it = bdrv_next(it, &bs))) { AioContext *ctx = bdrv_get_aio_context(bs); aio_context_acquire(ctx); @@ -415,9 +417,10 @@ int bdrv_all_delete_snapshot(const char *name, BlockDriverState **first_bad_bs, int bdrv_all_goto_snapshot(const char *name, BlockDriverState **first_bad_bs) { int err = 0; - BlockDriverState *bs = NULL; + BlockDriverState *bs; + BdrvNextIterator *it = NULL; - while (err == 0 && (bs = bdrv_next(bs))) { + while (err == 0 && (it = bdrv_next(it, &bs))) { AioContext *ctx = bdrv_get_aio_context(bs); aio_context_acquire(ctx); @@ -435,9 +438,10 @@ int bdrv_all_find_snapshot(const char *name, BlockDriverState **first_bad_bs) { QEMUSnapshotInfo sn; int err = 0; - BlockDriverState *bs = NULL; + BlockDriverState *bs; + BdrvNextIterator *it = NULL; - while (err == 0 && (bs = bdrv_next(bs))) { + while (err == 0 && (it = bdrv_next(it, &bs))) { AioContext *ctx = bdrv_get_aio_context(bs); aio_context_acquire(ctx); @@ -457,9 +461,10 @@ int bdrv_all_create_snapshot(QEMUSnapshotInfo *sn, BlockDriverState **first_bad_bs) { int err = 0; - BlockDriverState *bs = NULL; + BlockDriverState *bs; + BdrvNextIterator *it = NULL; - while (err == 0 && (bs = bdrv_next(bs))) { + while (err == 0 && (it = bdrv_next(it, &bs))) { AioContext *ctx = bdrv_get_aio_context(bs); aio_context_acquire(ctx); @@ -480,9 +485,10 @@ int bdrv_all_create_snapshot(QEMUSnapshotInfo *sn, BlockDriverState *bdrv_all_find_vmstate_bs(void) { bool not_found = true; - BlockDriverState *bs = NULL; + BlockDriverState *bs; + BdrvNextIterator *it = NULL; - while (not_found && (bs = bdrv_next(bs))) { + while (not_found && (it = bdrv_next(it, &bs))) { AioContext *ctx = bdrv_get_aio_context(bs); aio_context_acquire(ctx); |