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Fix write iov_len check

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This commit is contained in:
Vitaliy Filippov
2019-11-18 13:37:32 +03:00
parent 5b8df6768b
commit b6174075de
2 changed files with 4 additions and 2 deletions
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blockstore_write.cpp
+3 -2
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@@ -10,7 +10,7 @@ void blockstore::enqueue_write(blockstore_operation *op)
.oid = op->oid,
.version = UINT64_MAX,
});
dirty_it--;
dirty_it--; // segfaults when dirty_db is empty
if (dirty_it != dirty_db.end() && dirty_it->first.oid == op->oid)
{
found = true;
@@ -95,13 +95,14 @@ int blockstore::dequeue_write(blockstore_operation *op)
op->iov_zerofill[vcnt++] = (struct iovec){ op->buf, op->len };
if (op->offset+op->len < block_size)
op->iov_zerofill[vcnt++] = (struct iovec){ zero_object, block_size - (op->offset + op->len) };
data->iov.iov_len = block_size;
}
else
{
vcnt = 1;
op->iov_zerofill[0] = (struct iovec){ op->buf, op->len };
data->iov.iov_len = op->len; // to check it in the callback
}
data->iov.iov_len = op->len; // to check it in the callback
data->callback = cb;
my_uring_prep_writev(
sqe, data_fd, op->iov_zerofill, vcnt, data_offset + (loc << block_order)