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Add "external" bitmap support to blockstore

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This commit is contained in:
Vitaliy Filippov
2021-04-10 17:44:12 +03:00
parent 95c29b9dc3
commit 6107a4d07b
10 changed files with 111 additions and 25 deletions
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src/blockstore_flush.cpp
+8 -1
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@@ -428,7 +428,7 @@ resume_1:
{
new_clean_bitmap = (bs->inmemory_meta
? meta_new.buf + meta_new.pos*bs->clean_entry_size + sizeof(clean_disk_entry)
: bs->clean_bitmap + (clean_loc >> bs->block_order)*bs->clean_entry_bitmap_size);
: bs->clean_bitmap + (clean_loc >> bs->block_order)*(bs->clean_entry_bitmap_size + bs->entry_attr_size));
if (clean_init_bitmap)
{
memset(new_clean_bitmap, 0, bs->clean_entry_bitmap_size);
@@ -473,6 +473,7 @@ resume_1:
wait_state = 5;
return false;
}
// zero out old metadata entry
memset(meta_old.buf + meta_old.pos*bs->clean_entry_size, 0, bs->clean_entry_size);
await_sqe(15);
data->iov = (struct iovec){ meta_old.buf, bs->meta_block_size };
@@ -509,6 +510,12 @@ resume_1:
{
memcpy(&new_entry->bitmap, new_clean_bitmap, bs->clean_entry_bitmap_size);
}
if (bs->entry_attr_size)
{
// copy latest external bitmap/attributes
void *bmp_ptr = bs->entry_attr_size > sizeof(void*) ? dirty_end->second.bitmap : &dirty_end->second.bitmap;
memcpy((void*)(new_entry+1) + bs->clean_entry_bitmap_size, bmp_ptr, bs->entry_attr_size);
}
}
await_sqe(6);
data->iov = (struct iovec){ meta_new.buf, bs->meta_block_size };