From: Christoph Hellwig <hch@lst.de>
Date: Sun, 1 Feb 2015 23:02:09 +0000 (+1100)
Subject: xfs: don't allocate an ioend for direct I/O completions
X-Git-Tag: fixes-v4.0-rc1~157^2~2^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2ba66237029d1ad6c1a5e2241b0ffbbfff55f750;p=pandora-kernel.git

xfs: don't allocate an ioend for direct I/O completions

Back in the days when the direct I/O ->end_io callback could be called
from interrupt context for AIO we needed a structure to hand off to the
workqueue, and reused the ioend structure for this purpose.  These days
->end_io is always called from user or workqueue context, which allows us
to avoid this memory allocation and simplify the code significantly.

[dchinner: removed now unused xfs_finish_ioend_sync() function after
	   Brian Foster did an initial review. ]

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
---

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