From: Seth Jennings Date: Mon, 29 Apr 2013 22:08:34 +0000 (-0700) Subject: mm: break up swap_writepage() for frontswap backends X-Git-Tag: omap-for-v3.10/dt-fixes-for-merge-window~128^2~20 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2f772e6cadf8ad8fca38927b17e6be028be669f5;p=pandora-kernel.git mm: break up swap_writepage() for frontswap backends swap_writepage() is currently where frontswap hooks into the swap write path to capture pages with the frontswap_store() function. However, if a frontswap backend wants to "resume" the writeback of a page to the swap device, it can't call swap_writepage() as the page will simply reenter the backend. This patch separates swap_writepage() into a top and bottom half, the bottom half named __swap_writepage() to allow a frontswap backend, like zswap, to resume writeback beyond the frontswap_store() hook. __add_to_swap_cache() is also made non-static so that the page for which writeback is to be resumed can be added to the swap cache. Signed-off-by: Seth Jennings Signed-off-by: Bob Liu Acked-by: Minchan Kim Reviewed-by: Dan Magenheimer Cc: Konrad Rzeszutek Wilk Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- Reading git-diff-tree failed