diff options
| -rw-r--r-- | block/block-copy.c | 82 | ||||
| -rw-r--r-- | include/block/block-copy.h | 4 |
2 files changed, 43 insertions, 43 deletions
diff --git a/block/block-copy.c b/block/block-copy.c index 4c947e548b..8b91fa0b06 100644 --- a/block/block-copy.c +++ b/block/block-copy.c @@ -25,13 +25,13 @@ #define BLOCK_COPY_MAX_MEM (128 * MiB) static BlockCopyInFlightReq *find_conflicting_inflight_req(BlockCopyState *s, - int64_t start, + int64_t offset, int64_t bytes) { BlockCopyInFlightReq *req; QLIST_FOREACH(req, &s->inflight_reqs, list) { - if (start + bytes > req->start && start < req->start + req->bytes) { + if (offset + bytes > req->offset && offset < req->offset + req->bytes) { return req; } } @@ -40,21 +40,21 @@ static BlockCopyInFlightReq *find_conflicting_inflight_req(BlockCopyState *s, } static void coroutine_fn block_copy_wait_inflight_reqs(BlockCopyState *s, - int64_t start, + int64_t offset, int64_t bytes) { BlockCopyInFlightReq *req; - while ((req = find_conflicting_inflight_req(s, start, bytes))) { + while ((req = find_conflicting_inflight_req(s, offset, bytes))) { qemu_co_queue_wait(&req->wait_queue, NULL); } } static void block_copy_inflight_req_begin(BlockCopyState *s, BlockCopyInFlightReq *req, - int64_t start, int64_t bytes) + int64_t offset, int64_t bytes) { - req->start = start; + req->offset = offset; req->bytes = bytes; qemu_co_queue_init(&req->wait_queue); QLIST_INSERT_HEAD(&s->inflight_reqs, req, list); @@ -161,26 +161,26 @@ void block_copy_set_progress_meter(BlockCopyState *s, ProgressMeter *pm) * Returns 0 on success. */ static int coroutine_fn block_copy_do_copy(BlockCopyState *s, - int64_t start, int64_t bytes, + int64_t offset, int64_t bytes, bool zeroes, bool *error_is_read) { int ret; - int64_t nbytes = MIN(start + bytes, s->len) - start; + int64_t nbytes = MIN(offset + bytes, s->len) - offset; void *bounce_buffer = NULL; - assert(start >= 0 && bytes > 0 && INT64_MAX - start >= bytes); - assert(QEMU_IS_ALIGNED(start, s->cluster_size)); + assert(offset >= 0 && bytes > 0 && INT64_MAX - offset >= bytes); + assert(QEMU_IS_ALIGNED(offset, s->cluster_size)); assert(QEMU_IS_ALIGNED(bytes, s->cluster_size)); - assert(start < s->len); - assert(start + bytes <= s->len || - start + bytes == QEMU_ALIGN_UP(s->len, s->cluster_size)); + assert(offset < s->len); + assert(offset + bytes <= s->len || + offset + bytes == QEMU_ALIGN_UP(s->len, s->cluster_size)); assert(nbytes < INT_MAX); if (zeroes) { - ret = bdrv_co_pwrite_zeroes(s->target, start, nbytes, s->write_flags & + ret = bdrv_co_pwrite_zeroes(s->target, offset, nbytes, s->write_flags & ~BDRV_REQ_WRITE_COMPRESSED); if (ret < 0) { - trace_block_copy_write_zeroes_fail(s, start, ret); + trace_block_copy_write_zeroes_fail(s, offset, ret); if (error_is_read) { *error_is_read = false; } @@ -189,10 +189,10 @@ static int coroutine_fn block_copy_do_copy(BlockCopyState *s, } if (s->use_copy_range) { - ret = bdrv_co_copy_range(s->source, start, s->target, start, nbytes, + ret = bdrv_co_copy_range(s->source, offset, s->target, offset, nbytes, 0, s->write_flags); if (ret < 0) { - trace_block_copy_copy_range_fail(s, start, ret); + trace_block_copy_copy_range_fail(s, offset, ret); s->use_copy_range = false; s->copy_size = MAX(s->cluster_size, BLOCK_COPY_MAX_BUFFER); /* Fallback to read+write with allocated buffer */ @@ -228,19 +228,19 @@ static int coroutine_fn block_copy_do_copy(BlockCopyState *s, bounce_buffer = qemu_blockalign(s->source->bs, nbytes); - ret = bdrv_co_pread(s->source, start, nbytes, bounce_buffer, 0); + ret = bdrv_co_pread(s->source, offset, nbytes, bounce_buffer, 0); if (ret < 0) { - trace_block_copy_read_fail(s, start, ret); + trace_block_copy_read_fail(s, offset, ret); if (error_is_read) { *error_is_read = true; } goto out; } - ret = bdrv_co_pwrite(s->target, start, nbytes, bounce_buffer, + ret = bdrv_co_pwrite(s->target, offset, nbytes, bounce_buffer, s->write_flags); if (ret < 0) { - trace_block_copy_write_fail(s, start, ret); + trace_block_copy_write_fail(s, offset, ret); if (error_is_read) { *error_is_read = false; } @@ -358,7 +358,7 @@ int64_t block_copy_reset_unallocated(BlockCopyState *s, } int coroutine_fn block_copy(BlockCopyState *s, - int64_t start, int64_t bytes, + int64_t offset, int64_t bytes, bool *error_is_read) { int ret = 0; @@ -371,64 +371,64 @@ int coroutine_fn block_copy(BlockCopyState *s, assert(bdrv_get_aio_context(s->source->bs) == bdrv_get_aio_context(s->target->bs)); - assert(QEMU_IS_ALIGNED(start, s->cluster_size)); + assert(QEMU_IS_ALIGNED(offset, s->cluster_size)); assert(QEMU_IS_ALIGNED(bytes, s->cluster_size)); - block_copy_wait_inflight_reqs(s, start, bytes); - block_copy_inflight_req_begin(s, &req, start, bytes); + block_copy_wait_inflight_reqs(s, offset, bytes); + block_copy_inflight_req_begin(s, &req, offset, bytes); while (bytes) { int64_t next_zero, cur_bytes, status_bytes; - if (!bdrv_dirty_bitmap_get(s->copy_bitmap, start)) { - trace_block_copy_skip(s, start); - start += s->cluster_size; + if (!bdrv_dirty_bitmap_get(s->copy_bitmap, offset)) { + trace_block_copy_skip(s, offset); + offset += s->cluster_size; bytes -= s->cluster_size; continue; /* already copied */ } cur_bytes = MIN(bytes, s->copy_size); - next_zero = bdrv_dirty_bitmap_next_zero(s->copy_bitmap, start, + next_zero = bdrv_dirty_bitmap_next_zero(s->copy_bitmap, offset, cur_bytes); if (next_zero >= 0) { - assert(next_zero > start); /* start is dirty */ - assert(next_zero < start + cur_bytes); /* no need to do MIN() */ - cur_bytes = next_zero - start; + assert(next_zero > offset); /* offset is dirty */ + assert(next_zero < offset + cur_bytes); /* no need to do MIN() */ + cur_bytes = next_zero - offset; } - ret = block_copy_block_status(s, start, cur_bytes, &status_bytes); + ret = block_copy_block_status(s, offset, cur_bytes, &status_bytes); if (s->skip_unallocated && !(ret & BDRV_BLOCK_ALLOCATED)) { - bdrv_reset_dirty_bitmap(s->copy_bitmap, start, status_bytes); + bdrv_reset_dirty_bitmap(s->copy_bitmap, offset, status_bytes); progress_set_remaining(s->progress, bdrv_get_dirty_count(s->copy_bitmap) + s->in_flight_bytes); - trace_block_copy_skip_range(s, start, status_bytes); - start += status_bytes; + trace_block_copy_skip_range(s, offset, status_bytes); + offset += status_bytes; bytes -= status_bytes; continue; } cur_bytes = MIN(cur_bytes, status_bytes); - trace_block_copy_process(s, start); + trace_block_copy_process(s, offset); - bdrv_reset_dirty_bitmap(s->copy_bitmap, start, cur_bytes); + bdrv_reset_dirty_bitmap(s->copy_bitmap, offset, cur_bytes); s->in_flight_bytes += cur_bytes; co_get_from_shres(s->mem, cur_bytes); - ret = block_copy_do_copy(s, start, cur_bytes, ret & BDRV_BLOCK_ZERO, + ret = block_copy_do_copy(s, offset, cur_bytes, ret & BDRV_BLOCK_ZERO, error_is_read); co_put_to_shres(s->mem, cur_bytes); s->in_flight_bytes -= cur_bytes; if (ret < 0) { - bdrv_set_dirty_bitmap(s->copy_bitmap, start, cur_bytes); + bdrv_set_dirty_bitmap(s->copy_bitmap, offset, cur_bytes); break; } progress_work_done(s->progress, cur_bytes); s->progress_bytes_callback(cur_bytes, s->progress_opaque); - start += cur_bytes; + offset += cur_bytes; bytes -= cur_bytes; } diff --git a/include/block/block-copy.h b/include/block/block-copy.h index 7fd36e528b..b76efb736f 100644 --- a/include/block/block-copy.h +++ b/include/block/block-copy.h @@ -19,7 +19,7 @@ #include "qemu/co-shared-resource.h" typedef struct BlockCopyInFlightReq { - int64_t start; + int64_t offset; int64_t bytes; QLIST_ENTRY(BlockCopyInFlightReq) list; CoQueue wait_queue; /* coroutines blocked on this request */ @@ -85,7 +85,7 @@ void block_copy_state_free(BlockCopyState *s); int64_t block_copy_reset_unallocated(BlockCopyState *s, int64_t offset, int64_t *count); -int coroutine_fn block_copy(BlockCopyState *s, int64_t start, int64_t bytes, +int coroutine_fn block_copy(BlockCopyState *s, int64_t offset, int64_t bytes, bool *error_is_read); #endif /* BLOCK_COPY_H */ |