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Date: Tue, 16 Sep 2014 11:41:07 +0900 From: Minchan Kim <minchan@...nel.org> To: Dan Streetman <ddstreet@...e.org> Cc: linux-mm@...ck.org, linux-kernel@...r.kernel.org, Sergey Senozhatsky <sergey.senozhatsky@...il.com>, Nitin Gupta <ngupta@...are.org>, Seth Jennings <sjennings@...iantweb.net>, Andrew Morton <akpm@...ux-foundation.org> Subject: Re: [PATCH] zsmalloc: simplify init_zspage free obj linking On Mon, Sep 15, 2014 at 04:58:50PM -0400, Dan Streetman wrote: > Change zsmalloc init_zspage() logic to iterate through each object on > each of its pages, checking the offset to verify the object is on the > current page before linking it into the zspage. > > The current zsmalloc init_zspage free object linking code has logic > that relies on there only being one page per zspage when PAGE_SIZE > is a multiple of class->size. It calculates the number of objects > for the current page, and iterates through all of them plus one, > to account for the assumed partial object at the end of the page. > While this currently works, the logic can be simplified to just > link the object at each successive offset until the offset is larger > than PAGE_SIZE, which does not rely on PAGE_SIZE being a multiple of > class->size. > > Signed-off-by: Dan Streetman <ddstreet@...e.org> > Cc: Minchan Kim <minchan@...nel.org> Acked-by: Minchan Kim <minchan@...nel.org> -- Kind regards, Minchan Kim -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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