Re: [PATCH 2/4] plist: add helper functions

[Mel Gorman]

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@xxxxxxxx>
> Cc: Mel Gorman <mgorman@xxxxxxx>
> Cc: Paul Gortmaker <paul.gortmaker@xxxxxxxxxxxxx>
> Cc: Steven Rostedt <rostedt@xxxxxxxxxxx>
> Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
> 

Acked-by: Mel Gorman <mgorman@xxxxxxx>

-- 
Mel Gorman
SUSE Labs
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