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block: Add BlockBackend.ctx

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This adds a new parameter to blk_new() which requires its callers to
declare from which AioContext this BlockBackend is going to be used (or
the locks of which AioContext need to be taken anyway).

The given context is only stored and kept up to date when changing
AioContexts. Actually applying the stored AioContext to the root node
is saved for another commit.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Kevin Wolf 2019-04-25 14:25:10 +02:00
parent 97896a4887
commit d861ab3acf
33 changed files with 102 additions and 64 deletions
Download patch file Download diff file Expand all files Collapse all files

10
tests/test-block-iothread.c
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@ -336,7 +336,7 @@ static void test_sync_op(const void *opaque)
BlockDriverState *bs;
BdrvChild *c;
blk = blk_new(BLK_PERM_ALL, BLK_PERM_ALL);
blk = blk_new(qemu_get_aio_context(), BLK_PERM_ALL, BLK_PERM_ALL);
bs = bdrv_new_open_driver(&bdrv_test, "base", BDRV_O_RDWR, &error_abort);
bs->total_sectors = 65536 / BDRV_SECTOR_SIZE;
blk_insert_bs(blk, bs, &error_abort);
@ -415,7 +415,7 @@ static void test_attach_blockjob(void)
BlockDriverState *bs;
TestBlockJob *tjob;
blk = blk_new(BLK_PERM_ALL, BLK_PERM_ALL);
blk = blk_new(qemu_get_aio_context(), BLK_PERM_ALL, BLK_PERM_ALL);
bs = bdrv_new_open_driver(&bdrv_test, "base", BDRV_O_RDWR, &error_abort);
blk_insert_bs(blk, bs, &error_abort);
@ -481,7 +481,7 @@ static void test_propagate_basic(void)
QDict *options;
/* Create bs_a and its BlockBackend */
blk = blk_new(BLK_PERM_ALL, BLK_PERM_ALL);
blk = blk_new(qemu_get_aio_context(), BLK_PERM_ALL, BLK_PERM_ALL);
bs_a = bdrv_new_open_driver(&bdrv_test, "bs_a", BDRV_O_RDWR, &error_abort);
blk_insert_bs(blk, bs_a, &error_abort);
@ -561,7 +561,7 @@ static void test_propagate_diamond(void)
qdict_put_str(options, "raw", "bs_c");
bs_verify = bdrv_open(NULL, NULL, options, BDRV_O_RDWR, &error_abort);
blk = blk_new(BLK_PERM_ALL, BLK_PERM_ALL);
blk = blk_new(qemu_get_aio_context(), BLK_PERM_ALL, BLK_PERM_ALL);
blk_insert_bs(blk, bs_verify, &error_abort);
/* Switch the AioContext */
@ -628,7 +628,7 @@ static void test_propagate_mirror(void)
g_assert(bdrv_get_aio_context(filter) == main_ctx);
/* With a BlockBackend on src, changing target must fail */
blk = blk_new(0, BLK_PERM_ALL);
blk = blk_new(qemu_get_aio_context(), 0, BLK_PERM_ALL);
blk_insert_bs(blk, src, &error_abort);
bdrv_try_set_aio_context(target, ctx, &local_err);