From: Fengguang Wu <fengguang.wu@intel.com>
Date: Thu, 9 Aug 2012 13:23:07 +0000 (+0200)
Subject: block: remove plugging at buffered write time
X-Git-Tag: v3.6-rc4~18^2~6
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=8430f9772f9ac305211f177b0fa56a312175da11;p=pandora-kernel.git

block: remove plugging at buffered write time

Buffered write(2) is not directly tied to IO, so it's not suitable to
handle plug in generic_file_aio_write().

Note that plugging for O_SYNC writes is also removed. The user may pass
arbitrary @size arguments, which may be much larger than the preferable
I/O size, or may cross extent/device boundaries. Let the lower layers
handle the plugging. The plugging code here actually turns them into
no-ops.

CC: Li Shaohua <shli@fusionio.com>
Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
---

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