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Date: Fri, 16 Mar 2012 17:47:19 -0700 From: John Stultz <john.stultz@...aro.org> To: John Stultz <john.stultz@...aro.org> CC: linux-kernel@...r.kernel.org, Andrew Morton <akpm@...ux-foundation.org>, Android Kernel Team <kernel-team@...roid.com>, Robert Love <rlove@...gle.com>, Mel Gorman <mel@....ul.ie>, Hugh Dickins <hughd@...gle.com>, Dave Hansen <dave@...ux.vnet.ibm.com>, Rik van Riel <riel@...hat.com>, Dmitry Adamushko <dmitry.adamushko@...il.com>, Dave Chinner <david@...morbit.com>, Neil Brown <neilb@...e.de>, Andrea Righi <andrea@...terlinux.com>, "Aneesh Kumar K.V" <aneesh.kumar@...ux.vnet.ibm.com> Subject: [PATCH] fadvise volatile fixes from Dmitry On 03/16/2012 03:51 PM, John Stultz wrote: > This patch provides new fadvise flags that can be used to mark > file pages as volatile, which will allow it to be discarded if the > kernel wants to reclaim memory. Right after sending this I realized I had forgotten to include some fixes for issues Dmitry pointed out. So I've included them here. Signed-off-by: John Stultz<john.stultz@...aro.org> --- mm/volatile.c | 5 +++-- 1 files changed, 3 insertions(+), 2 deletions(-) diff --git a/mm/volatile.c b/mm/volatile.c index e412a8b..f40c02e 100644 --- a/mm/volatile.c +++ b/mm/volatile.c @@ -220,11 +220,12 @@ long mapping_range_nonvolatile(struct address_space *mapping, new->mapping = mapping; new->range_node.start = end + 1; new->range_node.end = node->end; - volatile_range_resize(vrange, node->start, start-1); + new->purged = vrange->purged; range_tree_add(&mapping->volatile_root, &new->range_node); if (range_on_lru(new)) lru_add(new); + volatile_range_resize(vrange, node->start, start-1); break; } @@ -263,7 +264,7 @@ void mapping_clear_volatile_ranges(struct address_space *mapping) static int volatile_shrink(struct shrinker *ignored, struct shrink_control *sc) { struct volatile_range *range, *next; - unsigned long nr_to_scan = sc->nr_to_scan; + s64 nr_to_scan = sc->nr_to_scan; const gfp_t gfp_mask = sc->gfp_mask; if (nr_to_scan&& !(gfp_mask& __GFP_FS)) -- 1.7.3.2.146.gca209 -- 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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