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Message-ID: <20140207162131.GY6732@suse.de> Date: Fri, 7 Feb 2014 16:21:31 +0000 From: Mel Gorman <mgorman@...e.de> To: Rafael Aquini <aquini@...hat.com> Cc: linux-kernel@...r.kernel.org, trond.myklebust@...marydata.com, jstancek@...hat.com, jlayton@...hat.com, riel@...hat.com, linux-nfs@...r.kernel.org, akpm@...ux-foundation.org, linux-mm@...ck.org Subject: Re: [PATCH] mm: fix page leak at nfs_symlink() On Fri, Feb 07, 2014 at 01:19:54PM -0200, Rafael Aquini wrote: > Changes committed by "a0b8cab3 mm: remove lru parameter from > __pagevec_lru_add and remove parts of pagevec API" have introduced > a call to add_to_page_cache_lru() which causes a leak in nfs_symlink() > as now the page gets an extra refcount that is not dropped. > > Jan Stancek observed and reported the leak effect while running test8 from > Connectathon Testsuite. After several iterations over the test case, > which creates several symlinks on a NFS mountpoint, the test system was > quickly getting into an out-of-memory scenario. > > This patch fixes the page leak by dropping that extra refcount > add_to_page_cache_lru() is grabbing. > > Signed-off-by: Jan Stancek <jstancek@...hat.com> > Signed-off-by: Rafael Aquini <aquini@...hat.com> Thanks. Acked-by: Mel Gorman <mgorman@...e.de> It should be cc'd for stable for 3.11 and later kernels. -- Mel Gorman SUSE Labs -- 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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