[Qemu-devel] [PATCH v7 0/3] linux-aio: fix batch submission

[Ming Lei <ming.lei@canonical.com>]

The 1st patch fixes batch submission.

The 2nd one fixes -EAGAIN for non-batch case.

The 3rd one is a cleanup.

This patchset is splitted from previous patchset(dataplane: optimization
and multi virtqueue support), as suggested by Stefan.

V7:
	- add protection for aborting in laio_attach_aio_context(), as suggested
	by Stefan, 1/3
	- patch style, return real aborting failure to caller, as suggested
	by Kevin, 1/3
	- track pending I/O and only handle -EAGAIN if there is pending I/O,
	pointed by Kevin, 2/3 

V6:
	- don't pass ioq_submit() return value to ioq_enqueue(), as suggested
	by Stefan
	- fix one build failure introduced in V5, reported by Stefan

V5:
	- in case of submission failure, return -EIO for new coming requests
	until aborting is handled
	- in patch2, follow Paolo's suggestion about ioq_enqueue() changes

V4:
	- abort reuqests in BH to abvoid potential "Co-routine re-entered recursively"
	- remove 'enqueue' parameter to ioq_submit() to simpify change
	- beautify code as suggested by Paolo

V3:
	- rebase on QEMU master
V2:
	- code style fix and commit log fix as suggested by Benoît Canet
V1:
	- rebase on latest QEMU master

 block/linux-aio.c |  139 ++++++++++++++++++++++++++++++++++++++++++++---------
 1 file changed, 116 insertions(+), 23 deletions(-)


Thanks,
Ming Lei