diff options
| author | Peter Maydell <peter.maydell@linaro.org> | 2017-09-27 16:48:39 +0100 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2017-09-27 16:48:39 +0100 |
| commit | cfe4cade054c0e0d00d0185cdc433a9e3ce3e2e4 (patch) | |
| tree | fb6658177a90773b24ec9ca6fd00f4142fb9887e /block/qcow2.h | |
| parent | d666cacaeab904fb6e8361ee791b6e8ab8448577 (diff) | |
| parent | b156d51b62e6970753e1f9f36f7c4d5fdbf4c619 (diff) | |
Merge remote-tracking branch 'remotes/kevin/tags/for-upstream' into staging
Block layer patches
# gpg: Signature made Tue 26 Sep 2017 14:52:32 BST
# gpg: using RSA key 0x7F09B272C88F2FD6
# gpg: Good signature from "Kevin Wolf <kwolf@redhat.com>"
# Primary key fingerprint: DC3D EB15 9A9A F95D 3D74 56FE 7F09 B272 C88F 2FD6
* remotes/kevin/tags/for-upstream: (24 commits)
block/qcow2-bitmap: fix use of uninitialized pointer
qemu-iotests: add shrinking image test
qcow2: add shrink image support
qcow2: add qcow2_cache_discard
qemu-img: add --shrink flag for resize
iotests: fix 181: enable postcopy-ram capability on target
qemu-iotests: Test change-backing-file command
block: Fix permissions after bdrv_reopen()
block: reopen: Queue children after their parents
block: Base permissions on rw state after reopen
block: Add reopen queue to bdrv_check_perm()
block: Add reopen_queue to bdrv_child_perm()
qemu-io: Drop write permissions before read-only reopen
block: Clean up some bad code in the vvfat driver
block/throttle-groups.c: allocate RestartData on the heap
throttle: Assert that bkt->max is valid in throttle_compute_wait()
iotests: Print full path of bad output if mismatch
iotests: use virtio aliases for 067
iotests: use -ccw on s390x for 051
iotests: use -ccw on s390x for 040, 139, and 182
...
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Diffstat (limited to 'block/qcow2.h')
| -rw-r--r-- | block/qcow2.h | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/block/qcow2.h b/block/qcow2.h index 96a8d43c17..5a289a81e2 100644 --- a/block/qcow2.h +++ b/block/qcow2.h @@ -521,6 +521,18 @@ static inline uint64_t refcount_diff(uint64_t r1, uint64_t r2) return r1 > r2 ? r1 - r2 : r2 - r1; } +static inline +uint32_t offset_to_reftable_index(BDRVQcow2State *s, uint64_t offset) +{ + return offset >> (s->refcount_block_bits + s->cluster_bits); +} + +static inline uint64_t get_refblock_offset(BDRVQcow2State *s, uint64_t offset) +{ + uint32_t index = offset_to_reftable_index(s, offset); + return s->refcount_table[index] & REFT_OFFSET_MASK; +} + /* qcow2.c functions */ int qcow2_backing_read1(BlockDriverState *bs, QEMUIOVector *qiov, int64_t sector_num, int nb_sectors); @@ -584,10 +596,12 @@ int qcow2_inc_refcounts_imrt(BlockDriverState *bs, BdrvCheckResult *res, int qcow2_change_refcount_order(BlockDriverState *bs, int refcount_order, BlockDriverAmendStatusCB *status_cb, void *cb_opaque, Error **errp); +int qcow2_shrink_reftable(BlockDriverState *bs); /* qcow2-cluster.c functions */ int qcow2_grow_l1_table(BlockDriverState *bs, uint64_t min_size, bool exact_size); +int qcow2_shrink_l1_table(BlockDriverState *bs, uint64_t max_size); int qcow2_write_l1_entry(BlockDriverState *bs, int l1_index); int qcow2_decompress_cluster(BlockDriverState *bs, uint64_t cluster_offset); int qcow2_encrypt_sectors(BDRVQcow2State *s, int64_t sector_num, @@ -649,6 +663,9 @@ int qcow2_cache_get(BlockDriverState *bs, Qcow2Cache *c, uint64_t offset, int qcow2_cache_get_empty(BlockDriverState *bs, Qcow2Cache *c, uint64_t offset, void **table); void qcow2_cache_put(BlockDriverState *bs, Qcow2Cache *c, void **table); +void *qcow2_cache_is_table_offset(BlockDriverState *bs, Qcow2Cache *c, + uint64_t offset); +void qcow2_cache_discard(BlockDriverState *bs, Qcow2Cache *c, void *table); /* qcow2-bitmap.c functions */ int qcow2_check_bitmaps_refcounts(BlockDriverState *bs, BdrvCheckResult *res, |