From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:57400) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1YuODi-0006Ts-1v for qemu-devel@nongnu.org; Mon, 18 May 2015 12:48:51 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1YuODe-0008WM-P7 for qemu-devel@nongnu.org; Mon, 18 May 2015 12:48:50 -0400 From: Alberto Garcia Date: Mon, 18 May 2015 19:48:33 +0300 Message-Id: Subject: [Qemu-devel] [PATCH 0/3] Clean unused entries in the qcow2 L2/refcount cache List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: Kevin Wolf , Alberto Garcia , qemu-block@nongnu.org, Max Reitz , Stefan Hajnoczi These patches use MADV_DONTNEED to clean unused cache entries. Under Linux it frees the memory used by those pages. Berto Alberto Garcia (3): qcow2: mark the memory as no longer needed after qcow2_cache_empty() qcow2: add option to clean unused cache entries after some time qcow2: reorder fields in Qcow2CachedTable to reduce padding block/qcow2-cache.c | 57 +++++++++++++++++++++++++++++++++++++++++++++++++++- block/qcow2.c | 56 +++++++++++++++++++++++++++++++++++++++++++++++++++ block/qcow2.h | 4 ++++ qapi/block-core.json | 6 +++++- 4 files changed, 121 insertions(+), 2 deletions(-) -- 2.1.4