On Feb 20, 2007, at 9:33 AM, Ananiev, Leonid I wrote:
There is change in the patch which is uncommented in preface.
Now aio_ring_insert_entry() is not called if req->ki_users>=1.
Before was called.
Could you comment it?
It is described in the patch description, though perhaps not
explicitly enough:
"To get this working we change the aio_complete() path so that the ring
insertion is performed as the final iocb reference is dropped."
This stops an aio_complete() from generating a completion event
before the submission path has had a chance to generate an error.
This could happen if O_DIRECT bios completed very quickly before the
submission path had a chance to return up and call
ivalidate_inode_pages2_range().
- z
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