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Date: Mon, 12 May 2014 11:35:05 +0100
From: Mel Gorman <mgorman@suse.de>
Subject: Re: [PATCH 2/4] plist: add helper functions
Message-ID: <20140512103505.GL23991@suse.de>
References: <1397336454-13855-1-git-send-email-ddstreet@ieee.org>
 <1399057350-16300-1-git-send-email-ddstreet@ieee.org>
 <1399057350-16300-3-git-send-email-ddstreet@ieee.org>
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To: Dan Streetman <ddstreet@ieee.org>
Cc: Hugh Dickins <hughd@google.com>, Andrew Morton <akpm@linux-foundation.org>, Michal Hocko <mhocko@suse.cz>, Christian Ehrhardt <ehrhardt@linux.vnet.ibm.com>, Rik van Riel <riel@redhat.com>, Weijie Yang <weijieut@gmail.com>, Johannes Weiner <hannes@cmpxchg.org>, linux-mm@kvack.org, linux-kernel@vger.kernel.org, Paul Gortmaker <paul.gortmaker@windriver.com>, Steven Rostedt <rostedt@goodmis.org>, Thomas Gleixner <tglx@linutronix.de>

On Fri, May 02, 2014 at 03:02:28PM -0400, Dan Streetman wrote:
> Add PLIST_HEAD() to plist.h, equivalent to LIST_HEAD() from list.h, to
> define and initialize a struct plist_head.
> 
> Add plist_for_each_continue() and plist_for_each_entry_continue(),
> equivalent to list_for_each_continue() and list_for_each_entry_continue(),
> to iterate over a plist continuing after the current position.
> 
> Add plist_prev() and plist_next(), equivalent to (struct list_head*)->prev
> and ->next, implemented by list_prev_entry() and list_next_entry(), to
> access the prev/next struct plist_node entry.  These are needed because
> unlike struct list_head, direct access of the prev/next struct plist_node
> isn't possible; the list must be navigated via the contained struct list_head.
> e.g. instead of accessing the prev by list_prev_entry(node, node_list)
> it can be accessed by plist_prev(node).
> 
> Signed-off-by: Dan Streetman <ddstreet@ieee.org>
> Cc: Mel Gorman <mgorman@suse.de>
> Cc: Paul Gortmaker <paul.gortmaker@windriver.com>
> Cc: Steven Rostedt <rostedt@goodmis.org>
> Cc: Thomas Gleixner <tglx@linutronix.de>
> 

Acked-by: Mel Gorman <mgorman@suse.de>

-- 
Mel Gorman
SUSE Labs

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