From: Matthew Wilcox <matthew.r.wilcox@intel.com>
Date: Wed, 4 Jun 2014 23:07:48 +0000 (-0700)
Subject: swap: use bdev_read_page() / bdev_write_page()
X-Git-Tag: omap-for-v3.16/fixes-against-rc1~56^2~16^2~175
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=dd6bd0d9c7dbb3951005db4e424abbd37c4ff801;p=pandora-kernel.git

swap: use bdev_read_page() / bdev_write_page()

By calling the device driver to write the page directly, we avoid
allocating a BIO, which allows us to free memory without allocating
memory.

[akpm@linux-foundation.org: fix used-uninitialized bug]
Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com>
Cc: Dave Chinner <david@fromorbit.com>
Cc: Dheeraj Reddy <dheeraj.reddy@intel.com>
Cc: Hugh Dickins <hughd@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

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