From: Eliezer Tamir <eliezer.tamir@linux.intel.com>
Date: Tue, 9 Jul 2013 10:09:21 +0000 (+0300)
Subject: net/fs: change busy poll time accounting
X-Git-Tag: v3.11-rc1~64^2~8
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=76b1e9b9813e412bde7446525f6c299803713545;p=pandora-kernel.git

net/fs: change busy poll time accounting

Suggested by Linus:
Changed time accounting for busy-poll:
- Make it microsecond based.
- Use unsigned longs.
- Revert back to use time_after instead of time_in_range.
Reorder poll/select busy loop conditions:
- Clear busy_flag after one time we can't busy-poll.
- Only init busy_end if we actually are going to busy-poll.
Added one more missing need_resched() test.

Signed-off-by: Eliezer Tamir <eliezer.tamir@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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