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Message-ID: <50E4E989.5090202@redhat.com> Date: Wed, 02 Jan 2013 21:14:33 -0500 From: Rik van Riel <riel@...hat.com> To: Michel Lespinasse <walken@...gle.com> CC: Andy Lutomirski <luto@...capital.net>, Ingo Molnar <mingo@...nel.org>, Al Viro <viro@...iv.linux.org.uk>, Hugh Dickins <hughd@...gle.com>, Jorn_Engel <joern@...fs.org>, Andrew Morton <akpm@...ux-foundation.org>, linux-mm@...ck.org, linux-kernel@...r.kernel.org Subject: Re: [PATCH 3/9] mm: introduce mm_populate() for populating new vmas On 12/20/2012 07:49 PM, Michel Lespinasse wrote: > When creating new mappings using the MAP_POPULATE / MAP_LOCKED flags > (or with MCL_FUTURE in effect), we want to populate the pages within the > newly created vmas. This may take a while as we may have to read pages > from disk, so ideally we want to do this outside of the write-locked > mmap_sem region. > > This change introduces mm_populate(), which is used to defer populating > such mappings until after the mmap_sem write lock has been released. > This is implemented as a generalization of the former do_mlock_pages(), > which accomplished the same task but was using during mlock() / mlockall(). > > Reported-by: Andy Lutomirski <luto@...capital.net> > Signed-off-by: Michel Lespinasse <walken@...gle.com> Acked-by: Rik van Riel <riel@...hat.com> -- All rights reversed -- 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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