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Merge tag 'for-upstream' of https://repo.or.cz/qemu/kevin into staging

Browse Source 
Block layer patches

- Graph locking, part 3 (more block drivers)
- Compile out assert_bdrv_graph_readable() by default
- Add configure options for vmdk, vhdx and vpc
- Fix use after free in blockdev_mark_auto_del()
- migration: Attempt disk reactivation in more failure scenarios
- Coroutine correctness fixes

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# gpg: Signature made Wed 10 May 2023 01:18:41 PM BST
# gpg:                using RSA key DC3DEB159A9AF95D3D7456FE7F09B272C88F2FD6
# gpg:                issuer "kwolf@redhat.com"
# gpg: Good signature from "Kevin Wolf <kwolf@redhat.com>" [full]

* tag 'for-upstream' of https://repo.or.cz/qemu/kevin: (28 commits)
  block: compile out assert_bdrv_graph_readable() by default
  block: Mark bdrv_refresh_limits() and callers GRAPH_RDLOCK
  block: Mark bdrv_recurse_can_replace() and callers GRAPH_RDLOCK
  block: Mark bdrv_query_block_graph_info() and callers GRAPH_RDLOCK
  block: Mark bdrv_query_bds_stats() and callers GRAPH_RDLOCK
  block: Mark BlockDriver callbacks for amend job GRAPH_RDLOCK
  block: Mark bdrv_co_debug_event() GRAPH_RDLOCK
  block: Mark bdrv_co_get_info() and callers GRAPH_RDLOCK
  block: Mark bdrv_co_get_allocated_file_size() and callers GRAPH_RDLOCK
  mirror: Require GRAPH_RDLOCK for accessing a node's parent list
  vhdx: Require GRAPH_RDLOCK for accessing a node's parent list
  nbd: Mark nbd_co_do_establish_connection() and callers GRAPH_RDLOCK
  nbd: Remove nbd_co_flush() wrapper function
  block: .bdrv_open is non-coroutine and unlocked
  graph-lock: Fix GRAPH_RDLOCK_GUARD*() to be reader lock
  graph-lock: Add GRAPH_UNLOCKED(_PTR)
  test-bdrv-drain: Don't modify the graph in coroutines
  iotests: Test resizing image attached to an iothread
  block: Don't call no_coroutine_fns in qmp_block_resize()
  block: bdrv/blk_co_unref() for calls in coroutine context
  ...

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson
2023-05-10 14:52:03 +01:00
parent 568992e344 58a2e3f5c3
commit caa9cbd566
47 changed files with 474 additions and 240 deletions
Download Patch File Download Diff File Expand all files Collapse all files
block.c
+20 -5
View File
@@ -680,7 +680,7 @@ int coroutine_fn bdrv_co_create_opts_simple(BlockDriver *drv,
ret = 0;
out:
blk_unref(blk);
blk_co_unref(blk);
return ret;
}
@@ -1610,9 +1610,9 @@ out:
* bdrv_refresh_total_sectors() which polls when called from non-coroutine
* context.
*/
static int bdrv_open_driver(BlockDriverState *bs, BlockDriver *drv,
const char *node_name, QDict *options,
int open_flags, Error **errp)
static int no_coroutine_fn GRAPH_UNLOCKED
bdrv_open_driver(BlockDriverState *bs, BlockDriver *drv, const char *node_name,
QDict *options, int open_flags, Error **errp)
{
Error *local_err = NULL;
int i, ret;
@@ -1667,7 +1667,10 @@ static int bdrv_open_driver(BlockDriverState *bs, BlockDriver *drv,
return ret;
}
bdrv_graph_rdlock_main_loop();
bdrv_refresh_limits(bs, NULL, &local_err);
bdrv_graph_rdunlock_main_loop();
if (local_err) {
error_propagate(errp, local_err);
return -EINVAL;
@@ -3419,7 +3422,9 @@ static int bdrv_set_file_or_backing_noperm(BlockDriverState *parent_bs,
}
out:
bdrv_graph_rdlock_main_loop();
bdrv_refresh_limits(parent_bs, tran, NULL);
bdrv_graph_rdunlock_main_loop();
return 0;
}
@@ -4917,7 +4922,9 @@ static void bdrv_reopen_commit(BDRVReopenState *reopen_state)
qdict_del(bs->explicit_options, "backing");
qdict_del(bs->options, "backing");
bdrv_graph_rdlock_main_loop();
bdrv_refresh_limits(bs, NULL, NULL);
bdrv_graph_rdunlock_main_loop();
bdrv_refresh_total_sectors(bs, bs->total_sectors);
}
@@ -5316,7 +5323,9 @@ int bdrv_append(BlockDriverState *bs_new, BlockDriverState *bs_top,
out:
tran_finalize(tran, ret);
bdrv_graph_rdlock_main_loop();
bdrv_refresh_limits(bs_top, NULL, NULL);
bdrv_graph_rdunlock_main_loop();
if (new_context && old_context != new_context) {
aio_context_release(new_context);
@@ -5750,7 +5759,8 @@ exit:
* sums the size of all data-bearing children. (This excludes backing
* children.)
*/
static int64_t coroutine_fn bdrv_sum_allocated_file_size(BlockDriverState *bs)
static int64_t coroutine_fn GRAPH_RDLOCK
bdrv_sum_allocated_file_size(BlockDriverState *bs)
{
BdrvChild *child;
int64_t child_size, sum = 0;
@@ -5778,6 +5788,7 @@ int64_t coroutine_fn bdrv_co_get_allocated_file_size(BlockDriverState *bs)
{
BlockDriver *drv = bs->drv;
IO_CODE();
assert_bdrv_graph_readable();
if (!drv) {
return -ENOMEDIUM;
@@ -6347,6 +6358,8 @@ int coroutine_fn bdrv_co_get_info(BlockDriverState *bs, BlockDriverInfo *bdi)
int ret;
BlockDriver *drv = bs->drv;
IO_CODE();
assert_bdrv_graph_readable();
/* if bs->drv == NULL, bs is closed, so there's nothing to do here */
if (!drv) {
return -ENOMEDIUM;
@@ -6395,6 +6408,8 @@ BlockStatsSpecific *bdrv_get_specific_stats(BlockDriverState *bs)
void coroutine_fn bdrv_co_debug_event(BlockDriverState *bs, BlkdebugEvent event)
{
IO_CODE();
assert_bdrv_graph_readable();
if (!bs || !bs->drv || !bs->drv->bdrv_co_debug_event) {
return;
}
block/amend.c
+7 -1
View File
@@ -46,6 +46,7 @@ static int coroutine_fn blockdev_amend_run(Job *job, Error **errp)
{
BlockdevAmendJob *s = container_of(job, BlockdevAmendJob, common);
int ret;
GRAPH_RDLOCK_GUARD();
job_progress_set_remaining(&s->common, 1);
ret = s->bs->drv->bdrv_co_amend(s->bs, s->opts, s->force, errp);
@@ -54,7 +55,8 @@ static int coroutine_fn blockdev_amend_run(Job *job, Error **errp)
return ret;
}
static int blockdev_amend_pre_run(BlockdevAmendJob *s, Error **errp)
static int GRAPH_RDLOCK
blockdev_amend_pre_run(BlockdevAmendJob *s, Error **errp)
{
if (s->bs->drv->bdrv_amend_pre_run) {
return s->bs->drv->bdrv_amend_pre_run(s->bs, errp);
@@ -67,9 +69,11 @@ static void blockdev_amend_free(Job *job)
{
BlockdevAmendJob *s = container_of(job, BlockdevAmendJob, common);
bdrv_graph_rdlock_main_loop();
if (s->bs->drv->bdrv_amend_clean) {
s->bs->drv->bdrv_amend_clean(s->bs);
}
bdrv_graph_rdunlock_main_loop();
bdrv_unref(s->bs);
}
@@ -93,6 +97,8 @@ void qmp_x_blockdev_amend(const char *job_id,
BlockDriver *drv = bdrv_find_format(fmt);
BlockDriverState *bs;
GRAPH_RDLOCK_GUARD_MAINLOOP();
bs = bdrv_lookup_bs(NULL, node_name, errp);
if (!bs) {
return;
block/blkverify.c
+3 -2
View File
@@ -265,8 +265,9 @@ static int coroutine_fn GRAPH_RDLOCK blkverify_co_flush(BlockDriverState *bs)
return bdrv_co_flush(s->test_file->bs);
}
static bool blkverify_recurse_can_replace(BlockDriverState *bs,
BlockDriverState *to_replace)
static bool GRAPH_RDLOCK
blkverify_recurse_can_replace(BlockDriverState *bs,
BlockDriverState *to_replace)
{
BDRVBlkverifyState *s = bs->opaque;
block/block-backend.c
+9 -1
View File
@@ -2024,7 +2024,15 @@ void blk_activate(BlockBackend *blk, Error **errp)
return;
}
bdrv_activate(bs, errp);
/*
* Migration code can call this function in coroutine context, so leave
* coroutine context if necessary.
*/
if (qemu_in_coroutine()) {
bdrv_co_activate(bs, errp);
} else {
bdrv_activate(bs, errp);
}
}
bool coroutine_fn blk_co_is_inserted(BlockBackend *blk)
block/coroutines.h
+3 -2
View File
@@ -61,7 +61,7 @@ bdrv_co_readv_vmstate(BlockDriverState *bs, QEMUIOVector *qiov, int64_t pos);
int coroutine_fn GRAPH_RDLOCK
bdrv_co_writev_vmstate(BlockDriverState *bs, QEMUIOVector *qiov, int64_t pos);
int coroutine_fn
int coroutine_fn GRAPH_RDLOCK
nbd_co_do_establish_connection(BlockDriverState *bs, bool blocking,
Error **errp);
@@ -85,7 +85,8 @@ bdrv_common_block_status_above(BlockDriverState *bs,
int64_t *map,
BlockDriverState **file,
int *depth);
int co_wrapper_mixed
int co_wrapper_mixed_bdrv_rdlock
nbd_do_establish_connection(BlockDriverState *bs, bool blocking, Error **errp);
#endif /* BLOCK_COROUTINES_H */
block/crypto.c
+4 -4
View File
@@ -355,7 +355,7 @@ block_crypto_co_create_generic(BlockDriverState *bs, int64_t size,
ret = 0;
cleanup:
qcrypto_block_free(crypto);
blk_unref(blk);
blk_co_unref(blk);
return ret;
}
@@ -661,7 +661,7 @@ block_crypto_co_create_luks(BlockdevCreateOptions *create_options, Error **errp)
ret = 0;
fail:
bdrv_unref(bs);
bdrv_co_unref(bs);
return ret;
}
@@ -730,13 +730,13 @@ fail:
bdrv_co_delete_file_noerr(bs);
}
bdrv_unref(bs);
bdrv_co_unref(bs);
qapi_free_QCryptoBlockCreateOptions(create_opts);
qobject_unref(cryptoopts);
return ret;
}
static int coroutine_fn
static int coroutine_fn GRAPH_RDLOCK
block_crypto_co_get_info_luks(BlockDriverState *bs, BlockDriverInfo *bdi)
{
BlockDriverInfo subbdi;
block/graph-lock.c
+3
View File
@@ -265,7 +265,10 @@ void bdrv_graph_rdunlock_main_loop(void)
void assert_bdrv_graph_readable(void)
{
/* reader_count() is slow due to aio_context_list_lock lock contention */
#ifdef CONFIG_DEBUG_GRAPH_LOCK
assert(qemu_in_main_thread() || reader_count());
#endif
}
void assert_bdrv_graph_writable(void)
block/io.c
+5 -7
View File
@@ -160,7 +160,6 @@ void bdrv_refresh_limits(BlockDriverState *bs, Transaction *tran, Error **errp)
bool have_limits;
GLOBAL_STATE_CODE();
assume_graph_lock(); /* FIXME */
if (tran) {
BdrvRefreshLimitsState *s = g_new(BdrvRefreshLimitsState, 1);
@@ -727,10 +726,9 @@ BdrvTrackedRequest *coroutine_fn bdrv_co_get_self_request(BlockDriverState *bs)
/**
* Round a region to cluster boundaries
*/
void coroutine_fn bdrv_round_to_clusters(BlockDriverState *bs,
int64_t offset, int64_t bytes,
int64_t *cluster_offset,
int64_t *cluster_bytes)
void coroutine_fn GRAPH_RDLOCK
bdrv_round_to_clusters(BlockDriverState *bs, int64_t offset, int64_t bytes,
int64_t *cluster_offset, int64_t *cluster_bytes)
{
BlockDriverInfo bdi;
IO_CODE();
@@ -744,7 +742,7 @@ void coroutine_fn bdrv_round_to_clusters(BlockDriverState *bs,
}
}
static coroutine_fn int bdrv_get_cluster_size(BlockDriverState *bs)
static int coroutine_fn GRAPH_RDLOCK bdrv_get_cluster_size(BlockDriverState *bs)
{
BlockDriverInfo bdi;
int ret;
@@ -1800,7 +1798,7 @@ fail:
return ret;
}
static inline int coroutine_fn
static inline int coroutine_fn GRAPH_RDLOCK
bdrv_co_write_req_prepare(BdrvChild *child, int64_t offset, int64_t bytes,
BdrvTrackedRequest *req, int flags)
{
block/meson.build
+13 -5
View File
@@ -38,11 +38,6 @@ block_ss.add(files(
'snapshot-access.c',
'throttle-groups.c',
'throttle.c',
'vhdx-endian.c',
'vhdx-log.c',
'vhdx.c',
'vmdk.c',
'vpc.c',
'write-threshold.c',
), zstd, zlib, gnutls)
@@ -55,6 +50,19 @@ endif
if get_option('vdi').allowed()
block_ss.add(files('vdi.c'))
endif
if get_option('vhdx').allowed()
block_ss.add(files(
'vhdx-endian.c',
'vhdx-log.c',
'vhdx.c'
))
endif
if get_option('vmdk').allowed()
block_ss.add(files('vmdk.c'))
endif
if get_option('vpc').allowed()
block_ss.add(files('vpc.c'))
endif
if get_option('cloop').allowed()
block_ss.add(files('cloop.c'))
endif
block/mirror.c
+13 -5
View File
@@ -270,8 +270,8 @@ static inline int64_t mirror_clip_bytes(MirrorBlockJob *s,
/* Round offset and/or bytes to target cluster if COW is needed, and
* return the offset of the adjusted tail against original. */
static int mirror_cow_align(MirrorBlockJob *s, int64_t *offset,
uint64_t *bytes)
static int coroutine_fn mirror_cow_align(MirrorBlockJob *s, int64_t *offset,
uint64_t *bytes)
{
bool need_cow;
int ret = 0;
@@ -576,8 +576,10 @@ static uint64_t coroutine_fn mirror_iteration(MirrorBlockJob *s)
} else if (ret >= 0 && !(ret & BDRV_BLOCK_DATA)) {
int64_t target_offset;
int64_t target_bytes;
bdrv_round_to_clusters(blk_bs(s->target), offset, io_bytes,
&target_offset, &target_bytes);
WITH_GRAPH_RDLOCK_GUARD() {
bdrv_round_to_clusters(blk_bs(s->target), offset, io_bytes,
&target_offset, &target_bytes);
}
if (target_offset == offset &&
target_bytes == io_bytes) {
mirror_method = ret & BDRV_BLOCK_ZERO ?
@@ -745,7 +747,10 @@ static int mirror_exit_common(Job *job)
* Cannot use check_to_replace_node() here, because that would
* check for an op blocker on @to_replace, and we have our own
* there.
*
* TODO Pull out the writer lock from bdrv_replace_node() to here
*/
bdrv_graph_rdlock_main_loop();
if (bdrv_recurse_can_replace(src, to_replace)) {
bdrv_replace_node(to_replace, target_bs, &local_err);
} else {
@@ -754,6 +759,7 @@ static int mirror_exit_common(Job *job)
"would not lead to an abrupt change of visible data",
to_replace->node_name, target_bs->node_name);
}
bdrv_graph_rdunlock_main_loop();
bdrv_drained_end(target_bs);
if (local_err) {
error_report_err(local_err);
@@ -966,11 +972,13 @@ static int coroutine_fn mirror_run(Job *job, Error **errp)
*/
bdrv_get_backing_filename(target_bs, backing_filename,
sizeof(backing_filename));
bdrv_graph_co_rdlock();
if (!bdrv_co_get_info(target_bs, &bdi) && bdi.cluster_size) {
s->target_cluster_size = bdi.cluster_size;
} else {
s->target_cluster_size = BDRV_SECTOR_SIZE;
}
bdrv_graph_co_rdunlock();
if (backing_filename[0] && !bdrv_backing_chain_next(target_bs) &&
s->granularity < s->target_cluster_size) {
s->buf_size = MAX(s->buf_size, s->target_cluster_size);
@@ -1416,7 +1424,7 @@ static MirrorOp *coroutine_fn active_write_prepare(MirrorBlockJob *s,
return op;
}
static void coroutine_fn active_write_settle(MirrorOp *op)
static void coroutine_fn GRAPH_RDLOCK active_write_settle(MirrorOp *op)
{
uint64_t start_chunk = op->offset / op->s->granularity;
uint64_t end_chunk = DIV_ROUND_UP(op->offset + op->bytes,
block/nbd.c
+24 -26
View File
@@ -322,6 +322,7 @@ int coroutine_fn nbd_co_do_establish_connection(BlockDriverState *bs,
int ret;
IO_CODE();
assert_bdrv_graph_readable();
assert(!s->ioc);
s->ioc = nbd_co_establish_connection(s->conn, &s->info, blocking, errp);
@@ -369,7 +370,7 @@ static bool nbd_client_connecting(BDRVNBDState *s)
}
/* Called with s->requests_lock taken. */
static coroutine_fn void nbd_reconnect_attempt(BDRVNBDState *s)
static void coroutine_fn GRAPH_RDLOCK nbd_reconnect_attempt(BDRVNBDState *s)
{
int ret;
bool blocking = s->state == NBD_CLIENT_CONNECTING_WAIT;
@@ -480,9 +481,9 @@ static coroutine_fn int nbd_receive_replies(BDRVNBDState *s, uint64_t handle)
}
}
static int coroutine_fn nbd_co_send_request(BlockDriverState *bs,
NBDRequest *request,
QEMUIOVector *qiov)
static int coroutine_fn GRAPH_RDLOCK
nbd_co_send_request(BlockDriverState *bs, NBDRequest *request,
QEMUIOVector *qiov)
{
BDRVNBDState *s = (BDRVNBDState *)bs->opaque;
int rc, i = -1;
@@ -1171,8 +1172,9 @@ static int coroutine_fn nbd_co_receive_blockstatus_reply(BDRVNBDState *s,
return iter.ret;
}
static int coroutine_fn nbd_co_request(BlockDriverState *bs, NBDRequest *request,
QEMUIOVector *write_qiov)
static int coroutine_fn GRAPH_RDLOCK
nbd_co_request(BlockDriverState *bs, NBDRequest *request,
QEMUIOVector *write_qiov)
{
int ret, request_ret;
Error *local_err = NULL;
@@ -1208,9 +1210,9 @@ static int coroutine_fn nbd_co_request(BlockDriverState *bs, NBDRequest *request
return ret ? ret : request_ret;
}
static int coroutine_fn nbd_client_co_preadv(BlockDriverState *bs, int64_t offset,
int64_t bytes, QEMUIOVector *qiov,
BdrvRequestFlags flags)
static int coroutine_fn GRAPH_RDLOCK
nbd_client_co_preadv(BlockDriverState *bs, int64_t offset, int64_t bytes,
QEMUIOVector *qiov, BdrvRequestFlags flags)
{
int ret, request_ret;
Error *local_err = NULL;
@@ -1266,9 +1268,9 @@ static int coroutine_fn nbd_client_co_preadv(BlockDriverState *bs, int64_t offse
return ret ? ret : request_ret;
}
static int coroutine_fn nbd_client_co_pwritev(BlockDriverState *bs, int64_t offset,
int64_t bytes, QEMUIOVector *qiov,
BdrvRequestFlags flags)
static int coroutine_fn GRAPH_RDLOCK
nbd_client_co_pwritev(BlockDriverState *bs, int64_t offset, int64_t bytes,
QEMUIOVector *qiov, BdrvRequestFlags flags)
{
BDRVNBDState *s = (BDRVNBDState *)bs->opaque;
NBDRequest request = {
@@ -1291,8 +1293,9 @@ static int coroutine_fn nbd_client_co_pwritev(BlockDriverState *bs, int64_t offs
return nbd_co_request(bs, &request, qiov);
}
static int coroutine_fn nbd_client_co_pwrite_zeroes(BlockDriverState *bs, int64_t offset,
int64_t bytes, BdrvRequestFlags flags)
static int coroutine_fn GRAPH_RDLOCK
nbd_client_co_pwrite_zeroes(BlockDriverState *bs, int64_t offset, int64_t bytes,
BdrvRequestFlags flags)
{
BDRVNBDState *s = (BDRVNBDState *)bs->opaque;
NBDRequest request = {
@@ -1326,7 +1329,7 @@ static int coroutine_fn nbd_client_co_pwrite_zeroes(BlockDriverState *bs, int64_
return nbd_co_request(bs, &request, NULL);
}
static int coroutine_fn nbd_client_co_flush(BlockDriverState *bs)
static int coroutine_fn GRAPH_RDLOCK nbd_client_co_flush(BlockDriverState *bs)
{
BDRVNBDState *s = (BDRVNBDState *)bs->opaque;
NBDRequest request = { .type = NBD_CMD_FLUSH };
@@ -1341,8 +1344,8 @@ static int coroutine_fn nbd_client_co_flush(BlockDriverState *bs)
return nbd_co_request(bs, &request, NULL);
}
static int coroutine_fn nbd_client_co_pdiscard(BlockDriverState *bs, int64_t offset,
int64_t bytes)
static int coroutine_fn GRAPH_RDLOCK
nbd_client_co_pdiscard(BlockDriverState *bs, int64_t offset, int64_t bytes)
{
BDRVNBDState *s = (BDRVNBDState *)bs->opaque;
NBDRequest request = {
@@ -1361,7 +1364,7 @@ static int coroutine_fn nbd_client_co_pdiscard(BlockDriverState *bs, int64_t off
return nbd_co_request(bs, &request, NULL);
}
static int coroutine_fn nbd_client_co_block_status(
static int coroutine_fn GRAPH_RDLOCK nbd_client_co_block_status(
BlockDriverState *bs, bool want_zero, int64_t offset, int64_t bytes,
int64_t *pnum, int64_t *map, BlockDriverState **file)
{
@@ -1920,11 +1923,6 @@ fail:
return ret;
}
static int coroutine_fn nbd_co_flush(BlockDriverState *bs)
{
return nbd_client_co_flush(bs);
}
static void nbd_refresh_limits(BlockDriverState *bs, Error **errp)
{
BDRVNBDState *s = (BDRVNBDState *)bs->opaque;
@@ -2120,7 +2118,7 @@ static BlockDriver bdrv_nbd = {
.bdrv_co_pwritev = nbd_client_co_pwritev,
.bdrv_co_pwrite_zeroes = nbd_client_co_pwrite_zeroes,
.bdrv_close = nbd_close,
.bdrv_co_flush_to_os = nbd_co_flush,
.bdrv_co_flush_to_os = nbd_client_co_flush,
.bdrv_co_pdiscard = nbd_client_co_pdiscard,
.bdrv_refresh_limits = nbd_refresh_limits,
.bdrv_co_truncate = nbd_co_truncate,
@@ -2148,7 +2146,7 @@ static BlockDriver bdrv_nbd_tcp = {
.bdrv_co_pwritev = nbd_client_co_pwritev,
.bdrv_co_pwrite_zeroes = nbd_client_co_pwrite_zeroes,
.bdrv_close = nbd_close,
.bdrv_co_flush_to_os = nbd_co_flush,
.bdrv_co_flush_to_os = nbd_client_co_flush,
.bdrv_co_pdiscard = nbd_client_co_pdiscard,
.bdrv_refresh_limits = nbd_refresh_limits,
.bdrv_co_truncate = nbd_co_truncate,
@@ -2176,7 +2174,7 @@ static BlockDriver bdrv_nbd_unix = {
.bdrv_co_pwritev = nbd_client_co_pwritev,
.bdrv_co_pwrite_zeroes = nbd_client_co_pwrite_zeroes,
.bdrv_close = nbd_close,
.bdrv_co_flush_to_os = nbd_co_flush,
.bdrv_co_flush_to_os = nbd_client_co_flush,
.bdrv_co_pdiscard = nbd_client_co_pdiscard,
.bdrv_refresh_limits = nbd_refresh_limits,
.bdrv_co_truncate = nbd_co_truncate,
block/parallels.c
+3 -3
View File
@@ -613,8 +613,8 @@ static int coroutine_fn parallels_co_create(BlockdevCreateOptions* opts,
ret = 0;
out:
blk_unref(blk);
bdrv_unref(bs);
blk_co_unref(blk);
bdrv_co_unref(bs);
return ret;
exit:
@@ -691,7 +691,7 @@ parallels_co_create_opts(BlockDriver *drv, const char *filename,
done:
qobject_unref(qdict);
bdrv_unref(bs);
bdrv_co_unref(bs);
qapi_free_BlockdevCreateOptions(create_options);
return ret;
}
block/qapi.c
+4 -2
View File
@@ -604,8 +604,8 @@ static void bdrv_query_blk_stats(BlockDeviceStats *ds, BlockBackend *blk)
= bdrv_latency_histogram_stats(&hgram[BLOCK_ACCT_FLUSH]);
}
static BlockStats *bdrv_query_bds_stats(BlockDriverState *bs,
bool blk_level)
static BlockStats * GRAPH_RDLOCK
bdrv_query_bds_stats(BlockDriverState *bs, bool blk_level)
{
BdrvChild *parent_child;
BlockDriverState *filter_or_cow_bs;
@@ -713,6 +713,8 @@ BlockStatsList *qmp_query_blockstats(bool has_query_nodes,
BlockBackend *blk;
BlockDriverState *bs;
GRAPH_RDLOCK_GUARD_MAINLOOP();
/* Just to be safe if query_nodes is not always initialized */
if (has_query_nodes && query_nodes) {
for (bs = bdrv_next_node(NULL); bs; bs = bdrv_next_node(bs)) {
block/qcow.c
+3 -3
View File
@@ -915,8 +915,8 @@ static int coroutine_fn qcow_co_create(BlockdevCreateOptions *opts,
g_free(tmp);
ret = 0;
exit:
blk_unref(qcow_blk);
bdrv_unref(bs);
blk_co_unref(qcow_blk);
bdrv_co_unref(bs);
qcrypto_block_free(crypto);
return ret;
}
@@ -1015,7 +1015,7 @@ qcow_co_create_opts(BlockDriver *drv, const char *filename,
fail:
g_free(backing_fmt);
qobject_unref(qdict);
bdrv_unref(bs);
bdrv_co_unref(bs);
qapi_free_BlockdevCreateOptions(create_options);
return ret;
}
block/qcow2-refcount.c
+1 -1
View File
@@ -3715,7 +3715,7 @@ int coroutine_fn qcow2_detect_metadata_preallocation(BlockDriverState *bs)
qemu_co_mutex_assert_locked(&s->lock);
file_length = bdrv_getlength(bs->file->bs);
file_length = bdrv_co_getlength(bs->file->bs);
if (file_length < 0) {
return file_length;
}
block/qcow2.c
+22 -26
View File
@@ -1891,7 +1891,7 @@ static void coroutine_fn qcow2_open_entry(void *opaque)
QCow2OpenCo *qoc = opaque;
BDRVQcow2State *s = qoc->bs->opaque;
assume_graph_lock(); /* FIXME */
GRAPH_RDLOCK_GUARD();
qemu_co_mutex_lock(&s->lock);
qoc->ret = qcow2_do_open(qoc->bs, qoc->options, qoc->flags, true,
@@ -1920,14 +1920,11 @@ static int qcow2_open(BlockDriverState *bs, QDict *options, int flags,
/* Initialise locks */
qemu_co_mutex_init(&s->lock);
if (qemu_in_coroutine()) {
/* From bdrv_co_create. */
qcow2_open_entry(&qoc);
} else {
assert(qemu_get_current_aio_context() == qemu_get_aio_context());
qemu_coroutine_enter(qemu_coroutine_create(qcow2_open_entry, &qoc));
BDRV_POLL_WHILE(bs, qoc.ret == -EINPROGRESS);
}
assert(!qemu_in_coroutine());
assert(qemu_get_current_aio_context() == qemu_get_aio_context());
qemu_coroutine_enter(qemu_coroutine_create(qcow2_open_entry, &qoc));
BDRV_POLL_WHILE(bs, qoc.ret == -EINPROGRESS);
return qoc.ret;
}
@@ -2089,11 +2086,10 @@ static void qcow2_join_options(QDict *options, QDict *old_options)
}
}
static int coroutine_fn qcow2_co_block_status(BlockDriverState *bs,
bool want_zero,
int64_t offset, int64_t count,
int64_t *pnum, int64_t *map,
BlockDriverState **file)
static int coroutine_fn GRAPH_RDLOCK
qcow2_co_block_status(BlockDriverState *bs, bool want_zero, int64_t offset,
int64_t count, int64_t *pnum, int64_t *map,
BlockDriverState **file)
{
BDRVQcow2State *s = bs->opaque;
uint64_t host_offset;
@@ -3235,7 +3231,7 @@ preallocate_co(BlockDriverState *bs, uint64_t offset, uint64_t new_length,
* all of the allocated clusters (otherwise we get failing reads after
* EOF). Extend the image to the last allocated sector.
*/
file_length = bdrv_getlength(s->data_file->bs);
file_length = bdrv_co_getlength(s->data_file->bs);
if (file_length < 0) {
error_setg_errno(errp, -file_length, "Could not get file size");
ret = file_length;
@@ -3706,7 +3702,7 @@ qcow2_co_create(BlockdevCreateOptions *create_options, Error **errp)
goto out;
}
blk_unref(blk);
blk_co_unref(blk);
blk = NULL;
/*
@@ -3786,7 +3782,7 @@ qcow2_co_create(BlockdevCreateOptions *create_options, Error **errp)
}
}
blk_unref(blk);
blk_co_unref(blk);
blk = NULL;
/* Reopen the image without BDRV_O_NO_FLUSH to flush it before returning.
@@ -3811,9 +3807,9 @@ qcow2_co_create(BlockdevCreateOptions *create_options, Error **errp)
ret = 0;
out:
blk_unref(blk);
bdrv_unref(bs);
bdrv_unref(data_bs);
blk_co_unref(blk);
bdrv_co_unref(bs);
bdrv_co_unref(data_bs);
return ret;
}
@@ -3944,8 +3940,8 @@ finish:
}
qobject_unref(qdict);
bdrv_unref(bs);
bdrv_unref(data_bs);
bdrv_co_unref(bs);
bdrv_co_unref(data_bs);
qapi_free_BlockdevCreateOptions(create_options);
return ret;
}
@@ -4098,7 +4094,7 @@ qcow2_co_copy_range_from(BlockDriverState *bs,
case QCOW2_SUBCLUSTER_UNALLOCATED_PLAIN:
case QCOW2_SUBCLUSTER_UNALLOCATED_ALLOC:
if (bs->backing && bs->backing->bs) {
int64_t backing_length = bdrv_getlength(bs->backing->bs);
int64_t backing_length = bdrv_co_getlength(bs->backing->bs);
if (src_offset >= backing_length) {
cur_write_flags |= BDRV_REQ_ZERO_WRITE;
} else {
@@ -4293,7 +4289,7 @@ qcow2_co_truncate(BlockDriverState *bs, int64_t offset, bool exact,
goto fail;
}
old_file_size = bdrv_getlength(bs->file->bs);
old_file_size = bdrv_co_getlength(bs->file->bs);
if (old_file_size < 0) {
error_setg_errno(errp, -old_file_size,
"Failed to inquire current file length");
@@ -4386,7 +4382,7 @@ qcow2_co_truncate(BlockDriverState *bs, int64_t offset, bool exact,
break;
}
old_file_size = bdrv_getlength(bs->file->bs);
old_file_size = bdrv_co_getlength(bs->file->bs);
if (old_file_size < 0) {
error_setg_errno(errp, -old_file_size,
"Failed to inquire current file length");
@@ -4694,7 +4690,7 @@ qcow2_co_pwritev_compressed_part(BlockDriverState *bs,
* align end of file to a sector boundary to ease reading with
* sector based I/Os
*/
int64_t len = bdrv_getlength(bs->file->bs);
int64_t len = bdrv_co_getlength(bs->file->bs);
if (len < 0) {
return len;
}
block/qcow2.h
+3 -1
View File
@@ -895,7 +895,9 @@ int qcow2_change_refcount_order(BlockDriverState *bs, int refcount_order,
void *cb_opaque, Error **errp);
int coroutine_fn GRAPH_RDLOCK qcow2_shrink_reftable(BlockDriverState *bs);
int64_t coroutine_fn qcow2_get_last_cluster(BlockDriverState *bs, int64_t size);
int coroutine_fn qcow2_detect_metadata_preallocation(BlockDriverState *bs);
int coroutine_fn GRAPH_RDLOCK
qcow2_detect_metadata_preallocation(BlockDriverState *bs);
/* qcow2-cluster.c functions */
int qcow2_grow_l1_table(BlockDriverState *bs, uint64_t min_size,
block/qed.c
+11 -13
View File
@@ -557,11 +557,13 @@ typedef struct QEDOpenCo {
int ret;
} QEDOpenCo;
static void coroutine_fn GRAPH_RDLOCK bdrv_qed_open_entry(void *opaque)
static void coroutine_fn bdrv_qed_open_entry(void *opaque)
{
QEDOpenCo *qoc = opaque;
BDRVQEDState *s = qoc->bs->opaque;
GRAPH_RDLOCK_GUARD();
qemu_co_mutex_lock(&s->table_lock);
qoc->ret = bdrv_qed_do_open(qoc->bs, qoc->options, qoc->flags, qoc->errp);
qemu_co_mutex_unlock(&s->table_lock);
@@ -579,21 +581,17 @@ static int bdrv_qed_open(BlockDriverState *bs, QDict *options, int flags,
};
int ret;
assume_graph_lock(); /* FIXME */
ret = bdrv_open_file_child(NULL, options, "file", bs, errp);
if (ret < 0) {
return ret;
}
bdrv_qed_init_state(bs);
if (qemu_in_coroutine()) {
bdrv_qed_open_entry(&qoc);
} else {
assert(qemu_get_current_aio_context() == qemu_get_aio_context());
qemu_coroutine_enter(qemu_coroutine_create(bdrv_qed_open_entry, &qoc));
BDRV_POLL_WHILE(bs, qoc.ret == -EINPROGRESS);
}
assert(!qemu_in_coroutine());
assert(qemu_get_current_aio_context() == qemu_get_aio_context());
qemu_coroutine_enter(qemu_coroutine_create(bdrv_qed_open_entry, &qoc));
BDRV_POLL_WHILE(bs, qoc.ret == -EINPROGRESS);
return qoc.ret;
}
@@ -748,8 +746,8 @@ static int coroutine_fn bdrv_qed_co_create(BlockdevCreateOptions *opts,
ret = 0; /* success */
out:
g_free(l1_table);
blk_unref(blk);
bdrv_unref(bs);
blk_co_unref(blk);
bdrv_co_unref(bs);
return ret;
}
@@ -819,7 +817,7 @@ bdrv_qed_co_create_opts(BlockDriver *drv, const char *filename,
fail:
qobject_unref(qdict);
bdrv_unref(bs);
bdrv_co_unref(bs);
qapi_free_BlockdevCreateOptions(create_options);
return ret;
}
block/quorum.c
+2 -2
View File
@@ -825,8 +825,8 @@ static coroutine_fn GRAPH_RDLOCK int quorum_co_flush(BlockDriverState *bs)
return result;
}
static bool quorum_recurse_can_replace(BlockDriverState *bs,
BlockDriverState *to_replace)
static bool GRAPH_RDLOCK
quorum_recurse_can_replace(BlockDriverState *bs, BlockDriverState *to_replace)
{
BDRVQuorumState *s = bs->opaque;
int i;
block/raw-format.c
+1 -1
View File
@@ -369,7 +369,7 @@ static BlockMeasureInfo *raw_measure(QemuOpts *opts, BlockDriverState *in_bs,
return info;
}
static int coroutine_fn
static int coroutine_fn GRAPH_RDLOCK
raw_co_get_info(BlockDriverState *bs, BlockDriverInfo *bdi)
{
return bdrv_co_get_info(bs->file->bs, bdi);

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