diff options
Diffstat (limited to 'qemu/block/qcow2.h')
| -rw-r--r-- | qemu/block/qcow2.h | 41 |
1 files changed, 24 insertions, 17 deletions
diff --git a/qemu/block/qcow2.h b/qemu/block/qcow2.h index 72e132838..a063a3c1a 100644 --- a/qemu/block/qcow2.h +++ b/qemu/block/qcow2.h @@ -26,7 +26,7 @@ #define BLOCK_QCOW2_H #include "crypto/cipher.h" -#include "block/coroutine.h" +#include "qemu/coroutine.h" //#define DEBUG_ALLOC //#define DEBUG_ALLOC2 @@ -96,6 +96,7 @@ #define QCOW2_OPT_CACHE_SIZE "cache-size" #define QCOW2_OPT_L2_CACHE_SIZE "l2-cache-size" #define QCOW2_OPT_REFCOUNT_CACHE_SIZE "refcount-cache-size" +#define QCOW2_OPT_CACHE_CLEAN_INTERVAL "cache-clean-interval" typedef struct QCowHeader { uint32_t magic; @@ -221,7 +222,7 @@ typedef uint64_t Qcow2GetRefcountFunc(const void *refcount_array, typedef void Qcow2SetRefcountFunc(void *refcount_array, uint64_t index, uint64_t value); -typedef struct BDRVQcowState { +typedef struct BDRVQcow2State { int cluster_bits; int cluster_size; int cluster_sectors; @@ -239,6 +240,8 @@ typedef struct BDRVQcowState { Qcow2Cache* l2_table_cache; Qcow2Cache* refcount_block_cache; + QEMUTimer *cache_clean_timer; + unsigned cache_clean_interval; uint8_t *cluster_cache; uint8_t *cluster_data; @@ -290,9 +293,7 @@ typedef struct BDRVQcowState { * override) */ char *image_backing_file; char *image_backing_format; -} BDRVQcowState; - -struct QCowAIOCB; +} BDRVQcow2State; typedef struct Qcow2COWRegion { /** @@ -402,28 +403,28 @@ typedef enum QCow2MetadataOverlap { #define REFT_OFFSET_MASK 0xfffffffffffffe00ULL -static inline int64_t start_of_cluster(BDRVQcowState *s, int64_t offset) +static inline int64_t start_of_cluster(BDRVQcow2State *s, int64_t offset) { return offset & ~(s->cluster_size - 1); } -static inline int64_t offset_into_cluster(BDRVQcowState *s, int64_t offset) +static inline int64_t offset_into_cluster(BDRVQcow2State *s, int64_t offset) { return offset & (s->cluster_size - 1); } -static inline int size_to_clusters(BDRVQcowState *s, int64_t size) +static inline uint64_t size_to_clusters(BDRVQcow2State *s, uint64_t size) { return (size + (s->cluster_size - 1)) >> s->cluster_bits; } -static inline int64_t size_to_l1(BDRVQcowState *s, int64_t size) +static inline int64_t size_to_l1(BDRVQcow2State *s, int64_t size) { int shift = s->cluster_bits + s->l2_bits; return (size + (1ULL << shift) - 1) >> shift; } -static inline int offset_to_l2_index(BDRVQcowState *s, int64_t offset) +static inline int offset_to_l2_index(BDRVQcow2State *s, int64_t offset) { return (offset >> s->cluster_bits) & (s->l2_size - 1); } @@ -434,12 +435,12 @@ static inline int64_t align_offset(int64_t offset, int n) return offset; } -static inline int64_t qcow2_vm_state_offset(BDRVQcowState *s) +static inline int64_t qcow2_vm_state_offset(BDRVQcow2State *s) { return (int64_t)s->l1_vm_state_index << (s->cluster_bits + s->l2_bits); } -static inline uint64_t qcow2_max_refcount_clusters(BDRVQcowState *s) +static inline uint64_t qcow2_max_refcount_clusters(BDRVQcow2State *s) { return QCOW_MAX_REFTABLE_SIZE >> s->cluster_bits; } @@ -458,7 +459,7 @@ static inline int qcow2_get_cluster_type(uint64_t l2_entry) } /* Check whether refcounts are eager or lazy */ -static inline bool qcow2_need_accurate_refcounts(BDRVQcowState *s) +static inline bool qcow2_need_accurate_refcounts(BDRVQcow2State *s) { return !(s->incompatible_features & QCOW2_INCOMPAT_DIRTY); } @@ -506,8 +507,8 @@ int qcow2_update_cluster_refcount(BlockDriverState *bs, int64_t cluster_index, enum qcow2_discard_type type); int64_t qcow2_alloc_clusters(BlockDriverState *bs, uint64_t size); -int qcow2_alloc_clusters_at(BlockDriverState *bs, uint64_t offset, - int nb_clusters); +int64_t qcow2_alloc_clusters_at(BlockDriverState *bs, uint64_t offset, + int64_t nb_clusters); int64_t qcow2_alloc_bytes(BlockDriverState *bs, int size); void qcow2_free_clusters(BlockDriverState *bs, int64_t offset, int64_t size, @@ -528,13 +529,17 @@ int qcow2_check_metadata_overlap(BlockDriverState *bs, int ign, int64_t offset, int qcow2_pre_write_overlap_check(BlockDriverState *bs, int ign, int64_t offset, int64_t size); +int qcow2_change_refcount_order(BlockDriverState *bs, int refcount_order, + BlockDriverAmendStatusCB *status_cb, + void *cb_opaque, Error **errp); + /* qcow2-cluster.c functions */ int qcow2_grow_l1_table(BlockDriverState *bs, uint64_t min_size, bool exact_size); int qcow2_write_l1_entry(BlockDriverState *bs, int l1_index); void qcow2_l2_cache_reset(BlockDriverState *bs); int qcow2_decompress_cluster(BlockDriverState *bs, uint64_t cluster_offset); -int qcow2_encrypt_sectors(BDRVQcowState *s, int64_t sector_num, +int qcow2_encrypt_sectors(BDRVQcow2State *s, int64_t sector_num, uint8_t *out_buf, const uint8_t *in_buf, int nb_sectors, bool enc, Error **errp); @@ -552,7 +557,8 @@ int qcow2_discard_clusters(BlockDriverState *bs, uint64_t offset, int qcow2_zero_clusters(BlockDriverState *bs, uint64_t offset, int nb_sectors); int qcow2_expand_zero_clusters(BlockDriverState *bs, - BlockDriverAmendStatusCB *status_cb); + BlockDriverAmendStatusCB *status_cb, + void *cb_opaque); /* qcow2-snapshot.c functions */ int qcow2_snapshot_create(BlockDriverState *bs, QEMUSnapshotInfo *sn_info); @@ -581,6 +587,7 @@ int qcow2_cache_set_dependency(BlockDriverState *bs, Qcow2Cache *c, Qcow2Cache *dependency); void qcow2_cache_depends_on_flush(Qcow2Cache *c); +void qcow2_cache_clean_unused(BlockDriverState *bs, Qcow2Cache *c); int qcow2_cache_empty(BlockDriverState *bs, Qcow2Cache *c); int qcow2_cache_get(BlockDriverState *bs, Qcow2Cache *c, uint64_t offset, |