linux-kernel - Re: [patch 2/5] mm + fs: prepare for non-page entries in page cache

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Message-Id: <20120501120246.83d2ce28.akpm@linux-foundation.org>
Date:	Tue, 1 May 2012 12:02:46 -0700
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Johannes Weiner <hannes@...xchg.org>
Cc:	linux-mm@...ck.org, Rik van Riel <riel@...hat.com>,
	Andrea Arcangeli <aarcange@...hat.com>,
	Peter Zijlstra <peterz@...radead.org>,
	Mel Gorman <mgorman@...e.de>,
	Minchan Kim <minchan.kim@...il.com>,
	Hugh Dickins <hughd@...gle.com>,
	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>,
	linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [patch 2/5] mm + fs: prepare for non-page entries in page cache

On Tue,  1 May 2012 10:41:50 +0200
Johannes Weiner <hannes@...xchg.org> wrote:

> --- a/fs/inode.c
> +++ b/fs/inode.c
> @@ -544,8 +544,7 @@ static void evict(struct inode *inode)
>  	if (op->evict_inode) {
>  		op->evict_inode(inode);
>  	} else {
> -		if (inode->i_data.nrpages)
> -			truncate_inode_pages(&inode->i_data, 0);
> +		truncate_inode_pages(&inode->i_data, 0);

Why did we lose this optimisation?
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