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block: remove AioContext locking

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This is the big patch that removes
aio_context_acquire()/aio_context_release() from the block layer and
affected block layer users.

There isn't a clean way to split this patch and the reviewers are likely
the same group of people, so I decided to do it in one patch.

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Paul Durrant <paul@xen.org>
Message-ID: <20231205182011.1976568-7-stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Stefan Hajnoczi 2023-12-05 13:20:03 -05:00 • committed by Kevin Wolf
parent 6bc30f1949
commit b49f4755c7
41 changed files with 104 additions and 1169 deletions
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20
block/monitor/bitmap-qmp-cmds.c
View file

@ -95,7 +95,6 @@ void qmp_block_dirty_bitmap_add(const char *node, const char *name,
{
BlockDriverState *bs;
BdrvDirtyBitmap *bitmap;
AioContext *aio_context;
if (!name || name[0] == '\0') {
error_setg(errp, "Bitmap name cannot be empty");
@ -107,14 +106,11 @@ void qmp_block_dirty_bitmap_add(const char *node, const char *name,
return;
}
aio_context = bdrv_get_aio_context(bs);
aio_context_acquire(aio_context);
if (has_granularity) {
if (granularity < 512 || !is_power_of_2(granularity)) {
error_setg(errp, "Granularity must be power of 2 "
"and at least 512");
goto out;
return;
}
} else {
/* Default to cluster size, if available: */
@ -132,12 +128,12 @@ void qmp_block_dirty_bitmap_add(const char *node, const char *name,
if (persistent &&
!bdrv_can_store_new_dirty_bitmap(bs, name, granularity, errp))
{
goto out;
return;
}
bitmap = bdrv_create_dirty_bitmap(bs, granularity, name, errp);
if (bitmap == NULL) {
goto out;
return;
}
if (disabled) {
@ -145,9 +141,6 @@ void qmp_block_dirty_bitmap_add(const char *node, const char *name,
}
bdrv_dirty_bitmap_set_persistence(bitmap, persistent);
out:
aio_context_release(aio_context);
}
BdrvDirtyBitmap *block_dirty_bitmap_remove(const char *node, const char *name,
@ -157,7 +150,6 @@ BdrvDirtyBitmap *block_dirty_bitmap_remove(const char *node, const char *name,
{
BlockDriverState *bs;
BdrvDirtyBitmap *bitmap;
AioContext *aio_context;
GLOBAL_STATE_CODE();
@ -166,19 +158,14 @@ BdrvDirtyBitmap *block_dirty_bitmap_remove(const char *node, const char *name,
return NULL;
}
aio_context = bdrv_get_aio_context(bs);
aio_context_acquire(aio_context);
if (bdrv_dirty_bitmap_check(bitmap, BDRV_BITMAP_BUSY | BDRV_BITMAP_RO,
errp)) {
aio_context_release(aio_context);
return NULL;
}
if (bdrv_dirty_bitmap_get_persistence(bitmap) &&
bdrv_remove_persistent_dirty_bitmap(bs, name, errp) < 0)
{
aio_context_release(aio_context);
return NULL;
}
@ -190,7 +177,6 @@ BdrvDirtyBitmap *block_dirty_bitmap_remove(const char *node, const char *name,
*bitmap_bs = bs;
}
aio_context_release(aio_context);
return release ? NULL : bitmap;
}