diff options
Diffstat (limited to 'block')
| -rw-r--r-- | block/accounting.c | 8 | ||||
| -rw-r--r-- | block/backup.c | 17 | ||||
| -rw-r--r-- | block/block-backend.c | 360 | ||||
| -rw-r--r-- | block/commit.c | 3 | ||||
| -rw-r--r-- | block/curl.c | 14 | ||||
| -rw-r--r-- | block/io.c | 27 | ||||
| -rw-r--r-- | block/iscsi.c | 9 | ||||
| -rw-r--r-- | block/linux-aio.c | 5 | ||||
| -rw-r--r-- | block/mirror.c | 17 | ||||
| -rw-r--r-- | block/nbd-client.c | 10 | ||||
| -rw-r--r-- | block/nfs.c | 17 | ||||
| -rw-r--r-- | block/qapi.c | 36 | ||||
| -rw-r--r-- | block/raw-posix.c | 230 | ||||
| -rw-r--r-- | block/raw_bsd.c | 6 | ||||
| -rw-r--r-- | block/sheepdog.c | 38 | ||||
| -rw-r--r-- | block/ssh.c | 5 | ||||
| -rw-r--r-- | block/stream.c | 3 | ||||
| -rw-r--r-- | block/throttle-groups.c | 50 | ||||
| -rw-r--r-- | block/win32-aio.c | 5 |
19 files changed, 480 insertions, 380 deletions
diff --git a/block/accounting.c b/block/accounting.c index 01d594f..a423560 100644 --- a/block/accounting.c +++ b/block/accounting.c @@ -47,14 +47,6 @@ void block_acct_done(BlockAcctStats *stats, BlockAcctCookie *cookie) } -void block_acct_highest_sector(BlockAcctStats *stats, int64_t sector_num, - unsigned int nb_sectors) -{ - if (stats->wr_highest_sector < sector_num + nb_sectors - 1) { - stats->wr_highest_sector = sector_num + nb_sectors - 1; - } -} - void block_acct_merge_done(BlockAcctStats *stats, enum BlockAcctType type, int num_requests) { diff --git a/block/backup.c b/block/backup.c index 5696431..ec01db8 100644 --- a/block/backup.c +++ b/block/backup.c @@ -21,6 +21,7 @@ #include "block/blockjob.h" #include "qapi/qmp/qerror.h" #include "qemu/ratelimit.h" +#include "sysemu/block-backend.h" #define BACKUP_CLUSTER_BITS 16 #define BACKUP_CLUSTER_SIZE (1 << BACKUP_CLUSTER_BITS) @@ -215,7 +216,9 @@ static void backup_iostatus_reset(BlockJob *job) { BackupBlockJob *s = container_of(job, BackupBlockJob, common); - bdrv_iostatus_reset(s->target); + if (s->target->blk) { + blk_iostatus_reset(s->target->blk); + } } static const BlockJobDriver backup_job_driver = { @@ -360,8 +363,10 @@ static void coroutine_fn backup_run(void *opaque) job->bitmap = hbitmap_alloc(end, 0); bdrv_set_enable_write_cache(target, true); - bdrv_set_on_error(target, on_target_error, on_target_error); - bdrv_iostatus_enable(target); + if (target->blk) { + blk_set_on_error(target->blk, on_target_error, on_target_error); + blk_iostatus_enable(target->blk); + } bdrv_add_before_write_notifier(bs, &before_write); @@ -451,7 +456,9 @@ static void coroutine_fn backup_run(void *opaque) } hbitmap_free(job->bitmap); - bdrv_iostatus_disable(target); + if (target->blk) { + blk_iostatus_disable(target->blk); + } bdrv_op_unblock_all(target, job->common.blocker); data = g_malloc(sizeof(*data)); @@ -480,7 +487,7 @@ void backup_start(BlockDriverState *bs, BlockDriverState *target, if ((on_source_error == BLOCKDEV_ON_ERROR_STOP || on_source_error == BLOCKDEV_ON_ERROR_ENOSPC) && - !bdrv_iostatus_is_enabled(bs)) { + (!bs->blk || !blk_iostatus_is_enabled(bs->blk))) { error_setg(errp, QERR_INVALID_PARAMETER, "on-source-error"); return; } diff --git a/block/block-backend.c b/block/block-backend.c index 2256551..19fdaae 100644 --- a/block/block-backend.c +++ b/block/block-backend.c @@ -12,12 +12,17 @@ #include "sysemu/block-backend.h" #include "block/block_int.h" +#include "block/blockjob.h" +#include "block/throttle-groups.h" #include "sysemu/blockdev.h" +#include "sysemu/sysemu.h" #include "qapi-event.h" /* Number of coroutines to reserve per attached device model */ #define COROUTINE_POOL_RESERVATION 64 +static AioContext *blk_aiocb_get_aio_context(BlockAIOCB *acb); + struct BlockBackend { char *name; int refcnt; @@ -29,15 +34,31 @@ struct BlockBackend { /* TODO change to DeviceState when all users are qdevified */ const BlockDevOps *dev_ops; void *dev_opaque; + + /* the block size for which the guest device expects atomicity */ + int guest_block_size; + + /* If the BDS tree is removed, some of its options are stored here (which + * can be used to restore those options in the new BDS on insert) */ + BlockBackendRootState root_state; + + /* I/O stats (display with "info blockstats"). */ + BlockAcctStats stats; + + BlockdevOnError on_read_error, on_write_error; + bool iostatus_enabled; + BlockDeviceIoStatus iostatus; }; typedef struct BlockBackendAIOCB { BlockAIOCB common; QEMUBH *bh; + BlockBackend *blk; int ret; } BlockBackendAIOCB; static const AIOCBInfo block_backend_aiocb_info = { + .get_aio_context = blk_aiocb_get_aio_context, .aiocb_size = sizeof(BlockBackendAIOCB), }; @@ -145,6 +166,10 @@ static void blk_delete(BlockBackend *blk) bdrv_unref(blk->bs); blk->bs = NULL; } + if (blk->root_state.throttle_state) { + g_free(blk->root_state.throttle_group); + throttle_group_unref(blk->root_state.throttle_state); + } /* Avoid double-remove after blk_hide_on_behalf_of_hmp_drive_del() */ if (blk->name[0]) { QTAILQ_REMOVE(&blk_backends, blk, link); @@ -309,6 +334,17 @@ void blk_hide_on_behalf_of_hmp_drive_del(BlockBackend *blk) } /* + * Associates a new BlockDriverState with @blk. + */ +void blk_insert_bs(BlockBackend *blk, BlockDriverState *bs) +{ + assert(!blk->bs && !bs->blk); + bdrv_ref(bs); + blk->bs = bs; + bs->blk = blk; +} + +/* * Attach device model @dev to @blk. * Return 0 on success, -EBUSY when a device model is attached already. */ @@ -320,7 +356,7 @@ int blk_attach_dev(BlockBackend *blk, void *dev) } blk_ref(blk); blk->dev = dev; - bdrv_iostatus_reset(blk->bs); + blk_iostatus_reset(blk); return 0; } @@ -347,7 +383,7 @@ void blk_detach_dev(BlockBackend *blk, void *dev) blk->dev = NULL; blk->dev_ops = NULL; blk->dev_opaque = NULL; - bdrv_set_guest_block_size(blk->bs, 512); + blk->guest_block_size = 512; blk_unref(blk); } @@ -452,7 +488,47 @@ void blk_dev_resize_cb(BlockBackend *blk) void blk_iostatus_enable(BlockBackend *blk) { - bdrv_iostatus_enable(blk->bs); + blk->iostatus_enabled = true; + blk->iostatus = BLOCK_DEVICE_IO_STATUS_OK; +} + +/* The I/O status is only enabled if the drive explicitly + * enables it _and_ the VM is configured to stop on errors */ +bool blk_iostatus_is_enabled(const BlockBackend *blk) +{ + return (blk->iostatus_enabled && + (blk->on_write_error == BLOCKDEV_ON_ERROR_ENOSPC || + blk->on_write_error == BLOCKDEV_ON_ERROR_STOP || + blk->on_read_error == BLOCKDEV_ON_ERROR_STOP)); +} + +BlockDeviceIoStatus blk_iostatus(const BlockBackend *blk) +{ + return blk->iostatus; +} + +void blk_iostatus_disable(BlockBackend *blk) +{ + blk->iostatus_enabled = false; +} + +void blk_iostatus_reset(BlockBackend *blk) +{ + if (blk_iostatus_is_enabled(blk)) { + blk->iostatus = BLOCK_DEVICE_IO_STATUS_OK; + if (blk->bs && blk->bs->job) { + block_job_iostatus_reset(blk->bs->job); + } + } +} + +void blk_iostatus_set_err(BlockBackend *blk, int error) +{ + assert(blk_iostatus_is_enabled(blk)); + if (blk->iostatus == BLOCK_DEVICE_IO_STATUS_OK) { + blk->iostatus = error == ENOSPC ? BLOCK_DEVICE_IO_STATUS_NOSPACE : + BLOCK_DEVICE_IO_STATUS_FAILED; + } } static int blk_check_byte_request(BlockBackend *blk, int64_t offset, @@ -464,7 +540,7 @@ static int blk_check_byte_request(BlockBackend *blk, int64_t offset, return -EIO; } - if (!blk_is_inserted(blk)) { + if (!blk_is_available(blk)) { return -ENOMEDIUM; } @@ -558,6 +634,7 @@ static BlockAIOCB *abort_aio_request(BlockBackend *blk, BlockCompletionFunc *cb, QEMUBH *bh; acb = blk_aio_get(&block_backend_aiocb_info, blk, cb, opaque); + acb->blk = blk; acb->ret = ret; bh = aio_bh_new(blk_get_aio_context(blk), error_callback_bh, acb); @@ -602,16 +679,28 @@ int blk_pwrite(BlockBackend *blk, int64_t offset, const void *buf, int count) int64_t blk_getlength(BlockBackend *blk) { + if (!blk_is_available(blk)) { + return -ENOMEDIUM; + } + return bdrv_getlength(blk->bs); } void blk_get_geometry(BlockBackend *blk, uint64_t *nb_sectors_ptr) { - bdrv_get_geometry(blk->bs, nb_sectors_ptr); + if (!blk->bs) { + *nb_sectors_ptr = 0; + } else { + bdrv_get_geometry(blk->bs, nb_sectors_ptr); + } } int64_t blk_nb_sectors(BlockBackend *blk) { + if (!blk_is_available(blk)) { + return -ENOMEDIUM; + } + return bdrv_nb_sectors(blk->bs); } @@ -642,6 +731,10 @@ BlockAIOCB *blk_aio_writev(BlockBackend *blk, int64_t sector_num, BlockAIOCB *blk_aio_flush(BlockBackend *blk, BlockCompletionFunc *cb, void *opaque) { + if (!blk_is_available(blk)) { + return abort_aio_request(blk, cb, opaque, -ENOMEDIUM); + } + return bdrv_aio_flush(blk->bs, cb, opaque); } @@ -683,12 +776,20 @@ int blk_aio_multiwrite(BlockBackend *blk, BlockRequest *reqs, int num_reqs) int blk_ioctl(BlockBackend *blk, unsigned long int req, void *buf) { + if (!blk_is_available(blk)) { + return -ENOMEDIUM; + } + return bdrv_ioctl(blk->bs, req, buf); } BlockAIOCB *blk_aio_ioctl(BlockBackend *blk, unsigned long int req, void *buf, BlockCompletionFunc *cb, void *opaque) { + if (!blk_is_available(blk)) { + return abort_aio_request(blk, cb, opaque, -ENOMEDIUM); + } + return bdrv_aio_ioctl(blk->bs, req, buf, cb, opaque); } @@ -704,11 +805,19 @@ int blk_co_discard(BlockBackend *blk, int64_t sector_num, int nb_sectors) int blk_co_flush(BlockBackend *blk) { + if (!blk_is_available(blk)) { + return -ENOMEDIUM; + } + return bdrv_co_flush(blk->bs); } int blk_flush(BlockBackend *blk) { + if (!blk_is_available(blk)) { + return -ENOMEDIUM; + } + return bdrv_flush(blk->bs); } @@ -719,7 +828,9 @@ int blk_flush_all(void) void blk_drain(BlockBackend *blk) { - bdrv_drain(blk->bs); + if (blk->bs) { + bdrv_drain(blk->bs); + } } void blk_drain_all(void) @@ -727,76 +838,178 @@ void blk_drain_all(void) bdrv_drain_all(); } +void blk_set_on_error(BlockBackend *blk, BlockdevOnError on_read_error, + BlockdevOnError on_write_error) +{ + blk->on_read_error = on_read_error; + blk->on_write_error = on_write_error; +} + BlockdevOnError blk_get_on_error(BlockBackend *blk, bool is_read) { - return bdrv_get_on_error(blk->bs, is_read); + return is_read ? blk->on_read_error : blk->on_write_error; } BlockErrorAction blk_get_error_action(BlockBackend *blk, bool is_read, int error) { - return bdrv_get_error_action(blk->bs, is_read, error); + BlockdevOnError on_err = blk_get_on_error(blk, is_read); + + switch (on_err) { + case BLOCKDEV_ON_ERROR_ENOSPC: + return (error == ENOSPC) ? + BLOCK_ERROR_ACTION_STOP : BLOCK_ERROR_ACTION_REPORT; + case BLOCKDEV_ON_ERROR_STOP: + return BLOCK_ERROR_ACTION_STOP; + case BLOCKDEV_ON_ERROR_REPORT: + return BLOCK_ERROR_ACTION_REPORT; + case BLOCKDEV_ON_ERROR_IGNORE: + return BLOCK_ERROR_ACTION_IGNORE; + default: + abort(); + } } +static void send_qmp_error_event(BlockBackend *blk, + BlockErrorAction action, + bool is_read, int error) +{ + IoOperationType optype; + + optype = is_read ? IO_OPERATION_TYPE_READ : IO_OPERATION_TYPE_WRITE; + qapi_event_send_block_io_error(blk_name(blk), optype, action, + blk_iostatus_is_enabled(blk), + error == ENOSPC, strerror(error), + &error_abort); +} + +/* This is done by device models because, while the block layer knows + * about the error, it does not know whether an operation comes from + * the device or the block layer (from a job, for example). + */ void blk_error_action(BlockBackend *blk, BlockErrorAction action, bool is_read, int error) { - bdrv_error_action(blk->bs, action, is_read, error); + assert(error >= 0); + + if (action == BLOCK_ERROR_ACTION_STOP) { + /* First set the iostatus, so that "info block" returns an iostatus + * that matches the events raised so far (an additional error iostatus + * is fine, but not a lost one). + */ + blk_iostatus_set_err(blk, error); + + /* Then raise the request to stop the VM and the event. + * qemu_system_vmstop_request_prepare has two effects. First, + * it ensures that the STOP event always comes after the + * BLOCK_IO_ERROR event. Second, it ensures that even if management + * can observe the STOP event and do a "cont" before the STOP + * event is issued, the VM will not stop. In this case, vm_start() + * also ensures that the STOP/RESUME pair of events is emitted. + */ + qemu_system_vmstop_request_prepare(); + send_qmp_error_event(blk, action, is_read, error); + qemu_system_vmstop_request(RUN_STATE_IO_ERROR); + } else { + send_qmp_error_event(blk, action, is_read, error); + } } int blk_is_read_only(BlockBackend *blk) { - return bdrv_is_read_only(blk->bs); + if (blk->bs) { + return bdrv_is_read_only(blk->bs); + } else { + return blk->root_state.read_only; + } } int blk_is_sg(BlockBackend *blk) { + if (!blk->bs) { + return 0; + } + return bdrv_is_sg(blk->bs); } int blk_enable_write_cache(BlockBackend *blk) { - return bdrv_enable_write_cache(blk->bs); + if (blk->bs) { + return bdrv_enable_write_cache(blk->bs); + } else { + return !!(blk->root_state.open_flags & BDRV_O_CACHE_WB); + } } void blk_set_enable_write_cache(BlockBackend *blk, bool wce) { - bdrv_set_enable_write_cache(blk->bs, wce); + if (blk->bs) { + bdrv_set_enable_write_cache(blk->bs, wce); + } else { + if (wce) { + blk->root_state.open_flags |= BDRV_O_CACHE_WB; + } else { + blk->root_state.open_flags &= ~BDRV_O_CACHE_WB; + } + } } void blk_invalidate_cache(BlockBackend *blk, Error **errp) { + if (!blk->bs) { + error_setg(errp, "Device '%s' has no medium", blk->name); + return; + } + bdrv_invalidate_cache(blk->bs, errp); } -int blk_is_inserted(BlockBackend *blk) +bool blk_is_inserted(BlockBackend *blk) +{ + return blk->bs && bdrv_is_inserted(blk->bs); +} + +bool blk_is_available(BlockBackend *blk) { - return bdrv_is_inserted(blk->bs); + return blk_is_inserted(blk) && !blk_dev_is_tray_open(blk); } void blk_lock_medium(BlockBackend *blk, bool locked) { - bdrv_lock_medium(blk->bs, locked); + if (blk->bs) { + bdrv_lock_medium(blk->bs, locked); + } } void blk_eject(BlockBackend *blk, bool eject_flag) { - bdrv_eject(blk->bs, eject_flag); + if (blk->bs) { + bdrv_eject(blk->bs, eject_flag); + } } int blk_get_flags(BlockBackend *blk) { - return bdrv_get_flags(blk->bs); + if (blk->bs) { + return bdrv_get_flags(blk->bs); + } else { + return blk->root_state.open_flags; + } } int blk_get_max_transfer_length(BlockBackend *blk) { - return blk->bs->bl.max_transfer_length; + if (blk->bs) { + return blk->bs->bl.max_transfer_length; + } else { + return 0; + } } void blk_set_guest_block_size(BlockBackend *blk, int align) { - bdrv_set_guest_block_size(blk->bs, align); + blk->guest_block_size = align; } void *blk_blockalign(BlockBackend *blk, size_t size) @@ -806,40 +1019,64 @@ void *blk_blockalign(BlockBackend *blk, size_t size) bool blk_op_is_blocked(BlockBackend *blk, BlockOpType op, Error **errp) { + if (!blk->bs) { + return false; + } + return bdrv_op_is_blocked(blk->bs, op, errp); } void blk_op_unblock(BlockBackend *blk, BlockOpType op, Error *reason) { - bdrv_op_unblock(blk->bs, op, reason); + if (blk->bs) { + bdrv_op_unblock(blk->bs, op, reason); + } } void blk_op_block_all(BlockBackend *blk, Error *reason) { - bdrv_op_block_all(blk->bs, reason); + if (blk->bs) { + bdrv_op_block_all(blk->bs, reason); + } } void blk_op_unblock_all(BlockBackend *blk, Error *reason) { - bdrv_op_unblock_all(blk->bs, reason); + if (blk->bs) { + bdrv_op_unblock_all(blk->bs, reason); + } } AioContext *blk_get_aio_context(BlockBackend *blk) { - return bdrv_get_aio_context(blk->bs); + if (blk->bs) { + return bdrv_get_aio_context(blk->bs); + } else { + return qemu_get_aio_context(); + } +} + +static AioContext *blk_aiocb_get_aio_context(BlockAIOCB *acb) +{ + BlockBackendAIOCB *blk_acb = DO_UPCAST(BlockBackendAIOCB, common, acb); + return blk_get_aio_context(blk_acb->blk); } void blk_set_aio_context(BlockBackend *blk, AioContext *new_context) { - bdrv_set_aio_context(blk->bs, new_context); + if (blk->bs) { + bdrv_set_aio_context(blk->bs, new_context); + } } void blk_add_aio_context_notifier(BlockBackend *blk, void (*attached_aio_context)(AioContext *new_context, void *opaque), void (*detach_aio_context)(void *opaque), void *opaque) { - bdrv_add_aio_context_notifier(blk->bs, attached_aio_context, - detach_aio_context, opaque); + if (blk->bs) { + bdrv_add_aio_context_notifier(blk->bs, attached_aio_context, + detach_aio_context, opaque); + } } void blk_remove_aio_context_notifier(BlockBackend *blk, @@ -848,28 +1085,36 @@ void blk_remove_aio_context_notifier(BlockBackend *blk, void (*detach_aio_context)(void *), void *opaque) { - bdrv_remove_aio_context_notifier(blk->bs, attached_aio_context, - detach_aio_context, opaque); + if (blk->bs) { + bdrv_remove_aio_context_notifier(blk->bs, attached_aio_context, + detach_aio_context, opaque); + } } void blk_add_close_notifier(BlockBackend *blk, Notifier *notify) { - bdrv_add_close_notifier(blk->bs, notify); + if (blk->bs) { + bdrv_add_close_notifier(blk->bs, notify); + } } void blk_io_plug(BlockBackend *blk) { - bdrv_io_plug(blk->bs); + if (blk->bs) { + bdrv_io_plug(blk->bs); + } } void blk_io_unplug(BlockBackend *blk) { - bdrv_io_unplug(blk->bs); + if (blk->bs) { + bdrv_io_unplug(blk->bs); + } } BlockAcctStats *blk_get_stats(BlockBackend *blk) { - return bdrv_get_stats(blk->bs); + return &blk->stats; } void *blk_aio_get(const AIOCBInfo *aiocb_info, BlockBackend *blk, @@ -902,6 +1147,10 @@ int blk_write_compressed(BlockBackend *blk, int64_t sector_num, int blk_truncate(BlockBackend *blk, int64_t offset) { + if (!blk_is_available(blk)) { + return -ENOMEDIUM; + } + return bdrv_truncate(blk->bs, offset); } @@ -918,20 +1167,67 @@ int blk_discard(BlockBackend *blk, int64_t sector_num, int nb_sectors) int blk_save_vmstate(BlockBackend *blk, const uint8_t *buf, int64_t pos, int size) { + if (!blk_is_available(blk)) { + return -ENOMEDIUM; + } + return bdrv_save_vmstate(blk->bs, buf, pos, size); } int blk_load_vmstate(BlockBackend *blk, uint8_t *buf, int64_t pos, int size) { + if (!blk_is_available(blk)) { + return -ENOMEDIUM; + } + return bdrv_load_vmstate(blk->bs, buf, pos, size); } int blk_probe_blocksizes(BlockBackend *blk, BlockSizes *bsz) { + if (!blk_is_available(blk)) { + return -ENOMEDIUM; + } + return bdrv_probe_blocksizes(blk->bs, bsz); } int blk_probe_geometry(BlockBackend *blk, HDGeometry *geo) { + if (!blk_is_available(blk)) { + return -ENOMEDIUM; + } + return bdrv_probe_geometry(blk->bs, geo); } + +/* + * Updates the BlockBackendRootState object with data from the currently + * attached BlockDriverState. + */ +void blk_update_root_state(BlockBackend *blk) +{ + assert(blk->bs); + + blk->root_state.open_flags = blk->bs->open_flags; + blk->root_state.read_only = blk->bs->read_only; + blk->root_state.detect_zeroes = blk->bs->detect_zeroes; + + if (blk->root_state.throttle_group) { + g_free(blk->root_state.throttle_group); + throttle_group_unref(blk->root_state.throttle_state); + } + if (blk->bs->throttle_state) { + const char *name = throttle_group_get_name(blk->bs); + blk->root_state.throttle_group = g_strdup(name); + blk->root_state.throttle_state = throttle_group_incref(name); + } else { + blk->root_state.throttle_group = NULL; + blk->root_state.throttle_state = NULL; + } +} + +BlockBackendRootState *blk_get_root_state(BlockBackend *blk) +{ + return &blk->root_state; +} diff --git a/block/commit.c b/block/commit.c index d12e26f..fdebe87 100644 --- a/block/commit.c +++ b/block/commit.c @@ -17,6 +17,7 @@ #include "block/blockjob.h" #include "qapi/qmp/qerror.h" #include "qemu/ratelimit.h" +#include "sysemu/block-backend.h" enum { /* @@ -213,7 +214,7 @@ void commit_start(BlockDriverState *bs, BlockDriverState *base, if ((on_error == BLOCKDEV_ON_ERROR_STOP || on_error == BLOCKDEV_ON_ERROR_ENOSPC) && - !bdrv_iostatus_is_enabled(bs)) { + (!bs->blk || !blk_iostatus_is_enabled(bs->blk))) { error_setg(errp, "Invalid parameter combination"); return; } diff --git a/block/curl.c b/block/curl.c index 032cc8a..8994182 100644 --- a/block/curl.c +++ b/block/curl.c @@ -154,18 +154,20 @@ static int curl_sock_cb(CURL *curl, curl_socket_t fd, int action, DPRINTF("CURL (AIO): Sock action %d on fd %d\n", action, fd); switch (action) { case CURL_POLL_IN: - aio_set_fd_handler(s->aio_context, fd, curl_multi_read, - NULL, state); + aio_set_fd_handler(s->aio_context, fd, false, + curl_multi_read, NULL, state); break; case CURL_POLL_OUT: - aio_set_fd_handler(s->aio_context, fd, NULL, curl_multi_do, state); + aio_set_fd_handler(s->aio_context, fd, false, + NULL, curl_multi_do, state); break; case CURL_POLL_INOUT: - aio_set_fd_handler(s->aio_context, fd, curl_multi_read, - curl_multi_do, state); + aio_set_fd_handler(s->aio_context, fd, false, + curl_multi_read, curl_multi_do, state); break; case CURL_POLL_REMOVE: - aio_set_fd_handler(s->aio_context, fd, NULL, NULL, NULL); + aio_set_fd_handler(s->aio_context, fd, false, + NULL, NULL, NULL); break; } @@ -23,6 +23,7 @@ */ #include "trace.h" +#include "sysemu/block-backend.h" #include "block/blockjob.h" #include "block/block_int.h" #include "block/throttle-groups.h" @@ -1151,7 +1152,9 @@ static int coroutine_fn bdrv_aligned_pwritev(BlockDriverState *bs, bdrv_set_dirty(bs, sector_num, nb_sectors); - block_acct_highest_sector(&bs->stats, sector_num, nb_sectors); + if (bs->wr_highest_offset < offset + bytes) { + bs->wr_highest_offset = offset + bytes; + } if (ret >= 0) { bs->total_sectors = MAX(bs->total_sectors, sector_num + nb_sectors); @@ -1903,7 +1906,10 @@ static int multiwrite_merge(BlockDriverState *bs, BlockRequest *reqs, } } - block_acct_merge_done(&bs->stats, BLOCK_ACCT_WRITE, num_reqs - outidx - 1); + if (bs->blk) { + block_acct_merge_done(blk_get_stats(bs->blk), BLOCK_ACCT_WRITE, + num_reqs - outidx - 1); + } return outidx + 1; } @@ -2618,3 +2624,20 @@ void bdrv_flush_io_queue(BlockDriverState *bs) } bdrv_start_throttled_reqs(bs); } + +void bdrv_drained_begin(BlockDriverState *bs) +{ + if (!bs->quiesce_counter++) { + aio_disable_external(bdrv_get_aio_context(bs)); + } + bdrv_drain(bs); +} + +void bdrv_drained_end(BlockDriverState *bs) +{ + assert(bs->quiesce_counter > 0); + if (--bs->quiesce_counter > 0) { + return; + } + aio_enable_external(bdrv_get_aio_context(bs)); +} diff --git a/block/iscsi.c b/block/iscsi.c index 93f1ee4..9a628b7 100644 --- a/block/iscsi.c +++ b/block/iscsi.c @@ -291,8 +291,8 @@ iscsi_set_events(IscsiLun *iscsilun) int ev = iscsi_which_events(iscsi); if (ev != iscsilun->events) { - aio_set_fd_handler(iscsilun->aio_context, - iscsi_get_fd(iscsi), + aio_set_fd_handler(iscsilun->aio_context, iscsi_get_fd(iscsi), + false, (ev & POLLIN) ? iscsi_process_read : NULL, (ev & POLLOUT) ? iscsi_process_write : NULL, iscsilun); @@ -1280,9 +1280,8 @@ static void iscsi_detach_aio_context(BlockDriverState *bs) { IscsiLun *iscsilun = bs->opaque; - aio_set_fd_handler(iscsilun->aio_context, - iscsi_get_fd(iscsilun->iscsi), - NULL, NULL, NULL); + aio_set_fd_handler(iscsilun->aio_context, iscsi_get_fd(iscsilun->iscsi), + false, NULL, NULL, NULL); iscsilun->events = 0; if (iscsilun->nop_timer) { diff --git a/block/linux-aio.c b/block/linux-aio.c index c991443..88b0520 100644 --- a/block/linux-aio.c +++ b/block/linux-aio.c @@ -287,7 +287,7 @@ void laio_detach_aio_context(void *s_, AioContext *old_context) { struct qemu_laio_state *s = s_; - aio_set_event_notifier(old_context, &s->e, NULL); + aio_set_event_notifier(old_context, &s->e, false, NULL); qemu_bh_delete(s->completion_bh); } @@ -296,7 +296,8 @@ void laio_attach_aio_context(void *s_, AioContext *new_context) struct qemu_laio_state *s = s_; s->completion_bh = aio_bh_new(new_context, qemu_laio_completion_bh, s); - aio_set_event_notifier(new_context, &s->e, qemu_laio_completion_cb); + aio_set_event_notifier(new_context, &s->e, false, + qemu_laio_completion_cb); } void *laio_init(void) diff --git a/block/mirror.c b/block/mirror.c index 7e43511..b1252a1 100644 --- a/block/mirror.c +++ b/block/mirror.c @@ -14,6 +14,7 @@ #include "trace.h" #include "block/blockjob.h" #include "block/block_int.h" +#include "sysemu/block-backend.h" #include "qapi/qmp/qerror.h" #include "qemu/ratelimit.h" #include "qemu/bitmap.h" @@ -599,7 +600,9 @@ immediate_exit: g_free(s->cow_bitmap); g_free(s->in_flight_bitmap); bdrv_release_dirty_bitmap(bs, s->dirty_bitmap); - bdrv_iostatus_disable(s->target); + if (s->target->blk) { + blk_iostatus_disable(s->target->blk); + } data = g_malloc(sizeof(*data)); data->ret = ret; @@ -621,7 +624,9 @@ static void mirror_iostatus_reset(BlockJob *job) { MirrorBlockJob *s = container_of(job, MirrorBlockJob, common); - bdrv_iostatus_reset(s->target); + if (s->target->blk) { + blk_iostatus_reset(s->target->blk); + } } static void mirror_complete(BlockJob *job, Error **errp) @@ -704,7 +709,7 @@ static void mirror_start_job(BlockDriverState *bs, BlockDriverState *target, if ((on_source_error == BLOCKDEV_ON_ERROR_STOP || on_source_error == BLOCKDEV_ON_ERROR_ENOSPC) && - !bdrv_iostatus_is_enabled(bs)) { + (!bs->blk || !blk_iostatus_is_enabled(bs->blk))) { error_setg(errp, QERR_INVALID_PARAMETER, "on-source-error"); return; } @@ -740,8 +745,10 @@ static void mirror_start_job(BlockDriverState *bs, BlockDriverState *target, return; } bdrv_set_enable_write_cache(s->target, true); - bdrv_set_on_error(s->target, on_target_error, on_target_error); - bdrv_iostatus_enable(s->target); + if (s->target->blk) { + blk_set_on_error(s->target->blk, on_target_error, on_target_error); + blk_iostatus_enable(s->target->blk); + } s->common.co = qemu_coroutine_create(mirror_run); trace_mirror_start(bs, s, s->common.co, opaque); qemu_coroutine_enter(s->common.co, s); diff --git a/block/nbd-client.c b/block/nbd-client.c index e1bb919..b7fd17a 100644 --- a/block/nbd-client.c +++ b/block/nbd-client.c @@ -124,7 +124,7 @@ static int nbd_co_send_request(BlockDriverState *bs, s->send_coroutine = qemu_coroutine_self(); aio_context = bdrv_get_aio_context(bs); - aio_set_fd_handler(aio_context, s->sock, + aio_set_fd_handler(aio_context, s->sock, false, nbd_reply_ready, nbd_restart_write, bs); if (qiov) { if (!s->is_unix) { @@ -144,7 +144,8 @@ static int nbd_co_send_request(BlockDriverState *bs, } else { rc = nbd_send_request(s->sock, request); } - aio_set_fd_handler(aio_context, s->sock, nbd_reply_ready, NULL, bs); + aio_set_fd_handler(aio_context, s->sock, false, + nbd_reply_ready, NULL, bs); s->send_coroutine = NULL; qemu_co_mutex_unlock(&s->send_mutex); return rc; @@ -348,14 +349,15 @@ int nbd_client_co_discard(BlockDriverState *bs, int64_t sector_num, void nbd_client_detach_aio_context(BlockDriverState *bs) { aio_set_fd_handler(bdrv_get_aio_context(bs), - nbd_get_client_session(bs)->sock, NULL, NULL, NULL); + nbd_get_client_session(bs)->sock, + false, NULL, NULL, NULL); } void nbd_client_attach_aio_context(BlockDriverState *bs, AioContext *new_context) { aio_set_fd_handler(new_context, nbd_get_client_session(bs)->sock, - nbd_reply_ready, NULL, bs); + false, nbd_reply_ready, NULL, bs); } void nbd_client_close(BlockDriverState *bs) diff --git a/block/nfs.c b/block/nfs.c index 887a98e..fd79f89 100644 --- a/block/nfs.c +++ b/block/nfs.c @@ -63,11 +63,10 @@ static void nfs_set_events(NFSClient *client) { int ev = nfs_which_events(client->context); if (ev != client->events) { - aio_set_fd_handler(client->aio_context, - nfs_get_fd(client->context), + aio_set_fd_handler(client->aio_context, nfs_get_fd(client->context), + false, (ev & POLLIN) ? nfs_process_read : NULL, - (ev & POLLOUT) ? nfs_process_write : NULL, - client); + (ev & POLLOUT) ? nfs_process_write : NULL, client); } client->events = ev; @@ -242,9 +241,8 @@ static void nfs_detach_aio_context(BlockDriverState *bs) { NFSClient *client = bs->opaque; - aio_set_fd_handler(client->aio_context, - nfs_get_fd(client->context), - NULL, NULL, NULL); + aio_set_fd_handler(client->aio_context, nfs_get_fd(client->context), + false, NULL, NULL, NULL); client->events = 0; } @@ -263,9 +261,8 @@ static void nfs_client_close(NFSClient *client) if (client->fh) { nfs_close(client->context, client->fh); } - aio_set_fd_handler(client->aio_context, - nfs_get_fd(client->context), - NULL, NULL, NULL); + aio_set_fd_handler(client->aio_context, nfs_get_fd(client->context), + false, NULL, NULL, NULL); nfs_destroy_context(client->context); } memset(client, 0, sizeof(NFSClient)); diff --git a/block/qapi.c b/block/qapi.c index 355ba32..ec0f513 100644 --- a/block/qapi.c +++ b/block/qapi.c @@ -301,17 +301,17 @@ static void bdrv_query_info(BlockBackend *blk, BlockInfo **p_info, info->tray_open = blk_dev_is_tray_open(blk); } - if (bdrv_iostatus_is_enabled(bs)) { + if (blk_iostatus_is_enabled(blk)) { info->has_io_status = true; - info->io_status = bs->iostatus; + info->io_status = blk_iostatus(blk); } - if (!QLIST_EMPTY(&bs->dirty_bitmaps)) { + if (bs && !QLIST_EMPTY(&bs->dirty_bitmaps)) { info->has_dirty_bitmaps = true; info->dirty_bitmaps = bdrv_query_dirty_bitmaps(bs); } - if (bs->drv) { + if (bs && bs->drv) { info->has_inserted = true; info->inserted = bdrv_block_device_info(bs, errp); if (info->inserted == NULL) { @@ -344,18 +344,22 @@ static BlockStats *bdrv_query_stats(const BlockDriverState *bs, } s->stats = g_malloc0(sizeof(*s->stats)); - s->stats->rd_bytes = bs->stats.nr_bytes[BLOCK_ACCT_READ]; - s->stats->wr_bytes = bs->stats.nr_bytes[BLOCK_ACCT_WRITE]; - s->stats->rd_operations = bs->stats.nr_ops[BLOCK_ACCT_READ]; - s->stats->wr_operations = bs->stats.nr_ops[BLOCK_ACCT_WRITE]; - s->stats->rd_merged = bs->stats.merged[BLOCK_ACCT_READ]; - s->stats->wr_merged = bs->stats.merged[BLOCK_ACCT_WRITE]; - s->stats->wr_highest_offset = - bs->stats.wr_highest_sector * BDRV_SECTOR_SIZE; - s->stats->flush_operations = bs->stats.nr_ops[BLOCK_ACCT_FLUSH]; - s->stats->wr_total_time_ns = bs->stats.total_time_ns[BLOCK_ACCT_WRITE]; - s->stats->rd_total_time_ns = bs->stats.total_time_ns[BLOCK_ACCT_READ]; - s->stats->flush_total_time_ns = bs->stats.total_time_ns[BLOCK_ACCT_FLUSH]; + if (bs->blk) { + BlockAcctStats *stats = blk_get_stats(bs->blk); + + s->stats->rd_bytes = stats->nr_bytes[BLOCK_ACCT_READ]; + s->stats->wr_bytes = stats->nr_bytes[BLOCK_ACCT_WRITE]; + s->stats->rd_operations = stats->nr_ops[BLOCK_ACCT_READ]; + s->stats->wr_operations = stats->nr_ops[BLOCK_ACCT_WRITE]; + s->stats->rd_merged = stats->merged[BLOCK_ACCT_READ]; + s->stats->wr_merged = stats->merged[BLOCK_ACCT_WRITE]; + s->stats->flush_operations = stats->nr_ops[BLOCK_ACCT_FLUSH]; + s->stats->wr_total_time_ns = stats->total_time_ns[BLOCK_ACCT_WRITE]; + s->stats->rd_total_time_ns = stats->total_time_ns[BLOCK_ACCT_READ]; + s->stats->flush_total_time_ns = stats->total_time_ns[BLOCK_ACCT_FLUSH]; + } + + s->stats->wr_highest_offset = bs->wr_highest_offset; if (bs->file) { s->has_parent = true; diff --git a/block/raw-posix.c b/block/raw-posix.c index 3a527f0..918c756 100644 --- a/block/raw-posix.c +++ b/block/raw-posix.c @@ -127,11 +127,6 @@ do { \ #define FTYPE_FILE 0 #define FTYPE_CD 1 -#define FTYPE_FD 2 - -/* if the FD is not accessed during that time (in ns), we try to - reopen it to see if the disk has been changed */ -#define FD_OPEN_TIMEOUT (1000000000) #define MAX_BLOCKSIZE 4096 @@ -141,13 +136,6 @@ typedef struct BDRVRawState { int open_flags; size_t buf_align; -#if defined(__linux__) - /* linux floppy specific */ - int64_t fd_open_time; - int64_t fd_error_time; - int fd_got_error; - int fd_media_changed; -#endif #ifdef CONFIG_LINUX_AIO int use_aio; void *aio_ctx; @@ -635,7 +623,7 @@ static int raw_reopen_prepare(BDRVReopenState *state, } #endif - if (s->type == FTYPE_FD || s->type == FTYPE_CD) { + if (s->type == FTYPE_CD) { raw_s->open_flags |= O_NONBLOCK; } @@ -2187,47 +2175,6 @@ static int hdev_open(BlockDriverState *bs, QDict *options, int flags, } #if defined(__linux__) -/* Note: we do not have a reliable method to detect if the floppy is - present. The current method is to try to open the floppy at every - I/O and to keep it opened during a few hundreds of ms. */ -static int fd_open(BlockDriverState *bs) -{ - BDRVRawState *s = bs->opaque; - int last_media_present; - - if (s->type != FTYPE_FD) - return 0; - last_media_present = (s->fd >= 0); - if (s->fd >= 0 && - (qemu_clock_get_ns(QEMU_CLOCK_REALTIME) - s->fd_open_time) >= FD_OPEN_TIMEOUT) { - qemu_close(s->fd); - s->fd = -1; - DPRINTF("Floppy closed\n"); - } - if (s->fd < 0) { - if (s->fd_got_error && - (qemu_clock_get_ns(QEMU_CLOCK_REALTIME) - s->fd_error_time) < FD_OPEN_TIMEOUT) { - DPRINTF("No floppy (open delayed)\n"); - return -EIO; - } - s->fd = qemu_open(bs->filename, s->open_flags & ~O_NONBLOCK); - if (s->fd < 0) { - s->fd_error_time = qemu_clock_get_ns(QEMU_CLOCK_REALTIME); - s->fd_got_error = 1; - if (last_media_present) - s->fd_media_changed = 1; - DPRINTF("No floppy\n"); - return -EIO; - } - DPRINTF("Floppy opened\n"); - } - if (!last_media_present) - s->fd_media_changed = 1; - s->fd_open_time = qemu_clock_get_ns(QEMU_CLOCK_REALTIME); - s->fd_got_error = 0; - return 0; -} - static int hdev_ioctl(BlockDriverState *bs, unsigned long int req, void *buf) { BDRVRawState *s = bs->opaque; @@ -2256,8 +2203,8 @@ static BlockAIOCB *hdev_aio_ioctl(BlockDriverState *bs, pool = aio_get_thread_pool(bdrv_get_aio_context(bs)); return thread_pool_submit_aio(pool, aio_worker, acb, cb, opaque); } +#endif /* linux */ -#elif defined(__FreeBSD__) || defined(__FreeBSD_kernel__) static int fd_open(BlockDriverState *bs) { BDRVRawState *s = bs->opaque; @@ -2267,14 +2214,6 @@ static int fd_open(BlockDriverState *bs) return 0; return -EIO; } -#else /* !linux && !FreeBSD */ - -static int fd_open(BlockDriverState *bs) -{ - return 0; -} - -#endif /* !linux && !FreeBSD */ static coroutine_fn BlockAIOCB *hdev_aio_discard(BlockDriverState *bs, int64_t sector_num, int nb_sectors, @@ -2318,14 +2257,13 @@ static int hdev_create(const char *filename, QemuOpts *opts, int64_t total_size = 0; bool has_prefix; - /* This function is used by all three protocol block drivers and therefore - * any of these three prefixes may be given. + /* This function is used by both protocol block drivers and therefore either + * of these prefixes may be given. * The return value has to be stored somewhere, otherwise this is an error * due to -Werror=unused-value. */ has_prefix = strstart(filename, "host_device:", &filename) || - strstart(filename, "host_cdrom:" , &filename) || - strstart(filename, "host_floppy:", &filename); + strstart(filename, "host_cdrom:" , &filename); (void)has_prefix; @@ -2405,155 +2343,6 @@ static BlockDriver bdrv_host_device = { #endif }; -#ifdef __linux__ -static void floppy_parse_filename(const char *filename, QDict *options, - Error **errp) -{ - /* The prefix is optional, just as for "file". */ - strstart(filename, "host_floppy:", &filename); - - qdict_put_obj(options, "filename", QOBJECT(qstring_from_str(filename))); -} - -static int floppy_open(BlockDriverState *bs, QDict *options, int flags, - Error **errp) -{ - BDRVRawState *s = bs->opaque; - Error *local_err = NULL; - int ret; - - s->type = FTYPE_FD; - - /* open will not fail even if no floppy is inserted, so add O_NONBLOCK */ - ret = raw_open_common(bs, options, flags, O_NONBLOCK, &local_err); - if (ret) { - if (local_err) { - error_propagate(errp, local_err); - } - return ret; - } - - /* close fd so that we can reopen it as needed */ - qemu_close(s->fd); - s->fd = -1; - s->fd_media_changed = 1; - - error_report("Host floppy pass-through is deprecated"); - error_printf("Support for it will be removed in a future release.\n"); - return 0; -} - -static int floppy_probe_device(const char *filename) -{ - int fd, ret; - int prio = 0; - struct floppy_struct fdparam; - struct stat st; - - if (strstart(filename, "/dev/fd", NULL) && - !strstart(filename, "/dev/fdset/", NULL) && - !strstart(filename, "/dev/fd/", NULL)) { - prio = 50; - } - - fd = qemu_open(filename, O_RDONLY | O_NONBLOCK); - if (fd < 0) { - goto out; - } - ret = fstat(fd, &st); - if (ret == -1 || !S_ISBLK(st.st_mode)) { - goto outc; - } - - /* Attempt to detect via a floppy specific ioctl */ - ret = ioctl(fd, FDGETPRM, &fdparam); - if (ret >= 0) - prio = 100; - -outc: - qemu_close(fd); -out: - return prio; -} - - -static int floppy_is_inserted(BlockDriverState *bs) -{ - return fd_open(bs) >= 0; -} - -static int floppy_media_changed(BlockDriverState *bs) -{ - BDRVRawState *s = bs->opaque; - int ret; - - /* - * XXX: we do not have a true media changed indication. - * It does not work if the floppy is changed without trying to read it. - */ - fd_open(bs); - ret = s->fd_media_changed; - s->fd_media_changed = 0; - DPRINTF("Floppy changed=%d\n", ret); - return ret; -} - -static void floppy_eject(BlockDriverState *bs, bool eject_flag) -{ - BDRVRawState *s = bs->opaque; - int fd; - - if (s->fd >= 0) { - qemu_close(s->fd); - s->fd = -1; - } - fd = qemu_open(bs->filename, s->open_flags | O_NONBLOCK); - if (fd >= 0) { - if (ioctl(fd, FDEJECT, 0) < 0) - perror("FDEJECT"); - qemu_close(fd); - } -} - -static BlockDriver bdrv_host_floppy = { - .format_name = "host_floppy", - .protocol_name = "host_floppy", - .instance_size = sizeof(BDRVRawState), - .bdrv_needs_filename = true, - .bdrv_probe_device = floppy_probe_device, - .bdrv_parse_filename = floppy_parse_filename, - .bdrv_file_open = floppy_open, - .bdrv_close = raw_close, - .bdrv_reopen_prepare = raw_reopen_prepare, - .bdrv_reopen_commit = raw_reopen_commit, - .bdrv_reopen_abort = raw_reopen_abort, - .bdrv_create = hdev_create, - .create_opts = &raw_create_opts, - - .bdrv_aio_readv = raw_aio_readv, - .bdrv_aio_writev = raw_aio_writev, - .bdrv_aio_flush = raw_aio_flush, - .bdrv_refresh_limits = raw_refresh_limits, - .bdrv_io_plug = raw_aio_plug, - .bdrv_io_unplug = raw_aio_unplug, - .bdrv_flush_io_queue = raw_aio_flush_io_queue, - - .bdrv_truncate = raw_truncate, - .bdrv_getlength = raw_getlength, - .has_variable_length = true, - .bdrv_get_allocated_file_size - = raw_get_allocated_file_size, - - .bdrv_detach_aio_context = raw_detach_aio_context, - .bdrv_attach_aio_context = raw_attach_aio_context, - - /* removable device support */ - .bdrv_is_inserted = floppy_is_inserted, - .bdrv_media_changed = floppy_media_changed, - .bdrv_eject = floppy_eject, -}; -#endif - #if defined(__linux__) || defined(__FreeBSD__) || defined(__FreeBSD_kernel__) static void cdrom_parse_filename(const char *filename, QDict *options, Error **errp) @@ -2609,15 +2398,13 @@ out: return prio; } -static int cdrom_is_inserted(BlockDriverState *bs) +static bool cdrom_is_inserted(BlockDriverState *bs) { BDRVRawState *s = bs->opaque; int ret; ret = ioctl(s->fd, CDROM_DRIVE_STATUS, CDSL_CURRENT); - if (ret == CDS_DISC_OK) - return 1; - return 0; + return ret == CDS_DISC_OK; } static void cdrom_eject(BlockDriverState *bs, bool eject_flag) @@ -2743,7 +2530,7 @@ static int cdrom_reopen(BlockDriverState *bs) return 0; } -static int cdrom_is_inserted(BlockDriverState *bs) +static bool cdrom_is_inserted(BlockDriverState *bs) { return raw_getlength(bs) > 0; } @@ -2831,7 +2618,6 @@ static void bdrv_file_init(void) bdrv_register(&bdrv_file); bdrv_register(&bdrv_host_device); #ifdef __linux__ - bdrv_register(&bdrv_host_floppy); bdrv_register(&bdrv_host_cdrom); #endif #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) diff --git a/block/raw_bsd.c b/block/raw_bsd.c index 63ee911..0aded31 100644 --- a/block/raw_bsd.c +++ b/block/raw_bsd.c @@ -154,11 +154,6 @@ static int raw_truncate(BlockDriverState *bs, int64_t offset) return bdrv_truncate(bs->file->bs, offset); } -static int raw_is_inserted(BlockDriverState *bs) -{ - return bdrv_is_inserted(bs->file->bs); -} - static int raw_media_changed(BlockDriverState *bs) { return bdrv_media_changed(bs->file->bs); @@ -264,7 +259,6 @@ BlockDriver bdrv_raw = { .bdrv_refresh_limits = &raw_refresh_limits, .bdrv_probe_blocksizes = &raw_probe_blocksizes, .bdrv_probe_geometry = &raw_probe_geometry, - .bdrv_is_inserted = &raw_is_inserted, .bdrv_media_changed = &raw_media_changed, .bdrv_eject = &raw_eject, .bdrv_lock_medium = &raw_lock_medium, diff --git a/block/sheepdog.c b/block/sheepdog.c index e7e58b7..d80e4ed 100644 --- a/block/sheepdog.c +++ b/block/sheepdog.c @@ -651,14 +651,16 @@ static coroutine_fn void do_co_req(void *opaque) unsigned int *rlen = srco->rlen; co = qemu_coroutine_self(); - aio_set_fd_handler(srco->aio_context, sockfd, NULL, restart_co_req, co); + aio_set_fd_handler(srco->aio_context, sockfd, false, + NULL, restart_co_req, co); ret = send_co_req(sockfd, hdr, data, wlen); if (ret < 0) { goto out; } - aio_set_fd_handler(srco->aio_context, sockfd, restart_co_req, NULL, co); + aio_set_fd_handler(srco->aio_context, sockfd, false, + restart_co_req, NULL, co); ret = qemu_co_recv(sockfd, hdr, sizeof(*hdr)); if (ret != sizeof(*hdr)) { @@ -683,7 +685,8 @@ static coroutine_fn void do_co_req(void *opaque) out: /* there is at most one request for this sockfd, so it is safe to * set each handler to NULL. */ - aio_set_fd_handler(srco->aio_context, sockfd, NULL, NULL, NULL); + aio_set_fd_handler(srco->aio_context, sockfd, false, + NULL, NULL, NULL); srco->ret = ret; srco->finished = true; @@ -735,7 +738,8 @@ static coroutine_fn void reconnect_to_sdog(void *opaque) BDRVSheepdogState *s = opaque; AIOReq *aio_req, *next; - aio_set_fd_handler(s->aio_context, s->fd, NULL, NULL, NULL); + aio_set_fd_handler(s->aio_context, s->fd, false, NULL, + NULL, NULL); close(s->fd); s->fd = -1; @@ -938,7 +942,8 @@ static int get_sheep_fd(BDRVSheepdogState *s, Error **errp) return fd; } - aio_set_fd_handler(s->aio_context, fd, co_read_response, NULL, s); + aio_set_fd_handler(s->aio_context, fd, false, + co_read_response, NULL, s); return fd; } @@ -1199,7 +1204,7 @@ static void coroutine_fn add_aio_request(BDRVSheepdogState *s, AIOReq *aio_req, qemu_co_mutex_lock(&s->lock); s->co_send = qemu_coroutine_self(); - aio_set_fd_handler(s->aio_context, s->fd, + aio_set_fd_handler(s->aio_context, s->fd, false, co_read_response, co_write_request, s); socket_set_cork(s->fd, 1); @@ -1218,7 +1223,8 @@ static void coroutine_fn add_aio_request(BDRVSheepdogState *s, AIOReq *aio_req, } out: socket_set_cork(s->fd, 0); - aio_set_fd_handler(s->aio_context, s->fd, co_read_response, NULL, s); + aio_set_fd_handler(s->aio_context, s->fd, false, + co_read_response, NULL, s); s->co_send = NULL; qemu_co_mutex_unlock(&s->lock); } @@ -1368,7 +1374,8 @@ static void sd_detach_aio_context(BlockDriverState *bs) { BDRVSheepdogState *s = bs->opaque; - aio_set_fd_handler(s->aio_context, s->fd, NULL, NULL, NULL); + aio_set_fd_handler(s->aio_context, s->fd, false, NULL, + NULL, NULL); } static void sd_attach_aio_context(BlockDriverState *bs, @@ -1377,7 +1384,8 @@ static void sd_attach_aio_context(BlockDriverState *bs, BDRVSheepdogState *s = bs->opaque; s->aio_context = new_context; - aio_set_fd_handler(new_context, s->fd, co_read_response, NULL, s); + aio_set_fd_handler(new_context, s->fd, false, + co_read_response, NULL, s); } /* TODO Convert to fine grained options */ @@ -1490,7 +1498,8 @@ static int sd_open(BlockDriverState *bs, QDict *options, int flags, g_free(buf); return 0; out: - aio_set_fd_handler(bdrv_get_aio_context(bs), s->fd, NULL, NULL, NULL); + aio_set_fd_handler(bdrv_get_aio_context(bs), s->fd, + false, NULL, NULL, NULL); if (s->fd >= 0) { closesocket(s->fd); } @@ -1528,7 +1537,8 @@ static void sd_reopen_commit(BDRVReopenState *state) BDRVSheepdogState *s = state->bs->opaque; if (s->fd) { - aio_set_fd_handler(s->aio_context, s->fd, NULL, NULL, NULL); + aio_set_fd_handler(s->aio_context, s->fd, false, + NULL, NULL, NULL); closesocket(s->fd); } @@ -1551,7 +1561,8 @@ static void sd_reopen_abort(BDRVReopenState *state) } if (re_s->fd) { - aio_set_fd_handler(s->aio_context, re_s->fd, NULL, NULL, NULL); + aio_set_fd_handler(s->aio_context, re_s->fd, false, + NULL, NULL, NULL); closesocket(re_s->fd); } @@ -1935,7 +1946,8 @@ static void sd_close(BlockDriverState *bs) error_report("%s, %s", sd_strerror(rsp->result), s->name); } - aio_set_fd_handler(bdrv_get_aio_context(bs), s->fd, NULL, NULL, NULL); + aio_set_fd_handler(bdrv_get_aio_context(bs), s->fd, + false, NULL, NULL, NULL); closesocket(s->fd); g_free(s->host_spec); } diff --git a/block/ssh.c b/block/ssh.c index d35b51f..af025c0 100644 --- a/block/ssh.c +++ b/block/ssh.c @@ -800,14 +800,15 @@ static coroutine_fn void set_fd_handler(BDRVSSHState *s, BlockDriverState *bs) rd_handler, wr_handler); aio_set_fd_handler(bdrv_get_aio_context(bs), s->sock, - rd_handler, wr_handler, co); + false, rd_handler, wr_handler, co); } static coroutine_fn void clear_fd_handler(BDRVSSHState *s, BlockDriverState *bs) { DPRINTF("s->sock=%d", s->sock); - aio_set_fd_handler(bdrv_get_aio_context(bs), s->sock, NULL, NULL, NULL); + aio_set_fd_handler(bdrv_get_aio_context(bs), s->sock, + false, NULL, NULL, NULL); } /* A non-blocking call returned EAGAIN, so yield, ensuring the diff --git a/block/stream.c b/block/stream.c index 3f64fa2..25af7ef 100644 --- a/block/stream.c +++ b/block/stream.c @@ -16,6 +16,7 @@ #include "block/blockjob.h" #include "qapi/qmp/qerror.h" #include "qemu/ratelimit.h" +#include "sysemu/block-backend.h" enum { /* @@ -222,7 +223,7 @@ void stream_start(BlockDriverState *bs, BlockDriverState *base, if ((on_error == BLOCKDEV_ON_ERROR_STOP || on_error == BLOCKDEV_ON_ERROR_ENOSPC) && - !bdrv_iostatus_is_enabled(bs)) { + (!bs->blk || !blk_iostatus_is_enabled(bs->blk))) { error_setg(errp, QERR_INVALID_PARAMETER, "on-error"); return; } diff --git a/block/throttle-groups.c b/block/throttle-groups.c index 1abc6fc..3419af7 100644 --- a/block/throttle-groups.c +++ b/block/throttle-groups.c @@ -33,8 +33,7 @@ * its own locking. * * This locking is however handled internally in this file, so it's - * mostly transparent to outside users (but see the documentation in - * throttle_groups_lock()). + * transparent to outside users. * * The whole ThrottleGroup structure is private and invisible to * outside users, that only use it through its ThrottleState. @@ -76,9 +75,9 @@ static QTAILQ_HEAD(, ThrottleGroup) throttle_groups = * created. * * @name: the name of the ThrottleGroup - * @ret: the ThrottleGroup + * @ret: the ThrottleState member of the ThrottleGroup */ -static ThrottleGroup *throttle_group_incref(const char *name) +ThrottleState *throttle_group_incref(const char *name) { ThrottleGroup *tg = NULL; ThrottleGroup *iter; @@ -108,7 +107,7 @@ static ThrottleGroup *throttle_group_incref(const char *name) qemu_mutex_unlock(&throttle_groups_lock); - return tg; + return &tg->ts; } /* Decrease the reference count of a ThrottleGroup. @@ -116,10 +115,12 @@ static ThrottleGroup *throttle_group_incref(const char *name) * When the reference count reaches zero the ThrottleGroup is * destroyed. * - * @tg: The ThrottleGroup to unref + * @ts: The ThrottleGroup to unref, given by its ThrottleState member */ -static void throttle_group_unref(ThrottleGroup *tg) +void throttle_group_unref(ThrottleState *ts) { + ThrottleGroup *tg = container_of(ts, ThrottleGroup, ts); + qemu_mutex_lock(&throttle_groups_lock); if (--tg->refcount == 0) { QTAILQ_REMOVE(&throttle_groups, tg, list); @@ -401,7 +402,8 @@ static void write_timer_cb(void *opaque) void throttle_group_register_bs(BlockDriverState *bs, const char *groupname) { int i; - ThrottleGroup *tg = throttle_group_incref(groupname); + ThrottleState *ts = throttle_group_incref(groupname); + ThrottleGroup *tg = container_of(ts, ThrottleGroup, ts); int clock_type = QEMU_CLOCK_REALTIME; if (qtest_enabled()) { @@ -409,7 +411,7 @@ void throttle_group_register_bs(BlockDriverState *bs, const char *groupname) clock_type = QEMU_CLOCK_VIRTUAL; } - bs->throttle_state = &tg->ts; + bs->throttle_state = ts; qemu_mutex_lock(&tg->lock); /* If the ThrottleGroup is new set this BlockDriverState as the token */ @@ -461,38 +463,10 @@ void throttle_group_unregister_bs(BlockDriverState *bs) throttle_timers_destroy(&bs->throttle_timers); qemu_mutex_unlock(&tg->lock); - throttle_group_unref(tg); + throttle_group_unref(&tg->ts); bs->throttle_state = NULL; } -/* Acquire the lock of this throttling group. - * - * You won't normally need to use this. None of the functions from the - * ThrottleGroup API require you to acquire the lock since all of them - * deal with it internally. - * - * This should only be used in exceptional cases when you want to - * access the protected fields of a BlockDriverState directly - * (e.g. bdrv_swap()). - * - * @bs: a BlockDriverState that is member of the group - */ -void throttle_group_lock(BlockDriverState *bs) -{ - ThrottleGroup *tg = container_of(bs->throttle_state, ThrottleGroup, ts); - qemu_mutex_lock(&tg->lock); -} - -/* Release the lock of this throttling group. - * - * See the comments in throttle_group_lock(). - */ -void throttle_group_unlock(BlockDriverState *bs) -{ - ThrottleGroup *tg = container_of(bs->throttle_state, ThrottleGroup, ts); - qemu_mutex_unlock(&tg->lock); -} - static void throttle_groups_init(void) { qemu_mutex_init(&throttle_groups_lock); diff --git a/block/win32-aio.c b/block/win32-aio.c index 64e8682..bbf2f01 100644 --- a/block/win32-aio.c +++ b/block/win32-aio.c @@ -174,7 +174,7 @@ int win32_aio_attach(QEMUWin32AIOState *aio, HANDLE hfile) void win32_aio_detach_aio_context(QEMUWin32AIOState *aio, AioContext *old_context) { - aio_set_event_notifier(old_context, &aio->e, NULL); + aio_set_event_notifier(old_context, &aio->e, false, NULL); aio->is_aio_context_attached = false; } @@ -182,7 +182,8 @@ void win32_aio_attach_aio_context(QEMUWin32AIOState *aio, AioContext *new_context) { aio->is_aio_context_attached = true; - aio_set_event_notifier(new_context, &aio->e, win32_aio_completion_cb); + aio_set_event_notifier(new_context, &aio->e, false, + win32_aio_completion_cb); } QEMUWin32AIOState *win32_aio_init(void) |
