From b9598db3401282bb27b4aef77e3eee12015f7f29 Mon Sep 17 00:00:00 2001
From: Jens Axboe <jens.axboe@oracle.com>
Date: Mon, 24 May 2010 19:34:43 +0200
Subject: [PATCH] pipe: make F_{GET,SET}PIPE_SZ deal with byte sizes

Instead of requiring an exact number of pages as the argument and
return value, change the API to deal with number of bytes instead.

This also relaxes the requirement that the passed in size must
result in a power-of-2 page array size. Round up to the nearest
power-of-2 automatically and return the resulting size of the pipe
on success.

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
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