Re: submit_bio() flush to disk immediately

Hi, On Tue, Aug 6, 2013 at 1:15 PM, Rajat Sharma <fs.rajat@gmail.com> wrote:

How are you reading and writing? What is your test utility? 'dd' has an option to specify iflag/oflag=direct, which would bypass buffer cache. But anyways this problem should not happen even if data is written to cache, you should read it back from cache.

I am using cat command. Its a block that belongs to a file and I am directly writing to the block. On reading the file I am getting stale data. Regards.