I'm trying to understand the file systems. I'm making good progress,
but I don't get this. If the buffer is marked not up to date because
the write failed, won't this cause block_prepare_write to try and read
the buffer using ll_rw_block thereby overwriting the data that couldn't
be written? Is this desirable? Perhaps I'm confused?
Hmm, ok this makes sense for the sync case, but what about the async
case? Should clear_buffer_uptodate be called in end_buffer_async_write?
How is the error going to be reported to the user, particularly in the
case of a memory mapped file? Shouldn't the system try to write that
page again?
Robert W. Fuller wrote:
> I'm trying to understand the file systems. I'm making good progress,
> but I don't get this. If the buffer is marked not up to date because
> the write failed, won't this cause block_prepare_write to try and read
> the buffer using ll_rw_block thereby overwriting the data that couldn't
> be written? Is this desirable? Perhaps I'm confused?
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