From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:43135) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1d3Dik-0002GJ-NR for qemu-devel@nongnu.org; Tue, 25 Apr 2017 23:34:27 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1d3Dik-0001YJ-0J for qemu-devel@nongnu.org; Tue, 25 Apr 2017 23:34:26 -0400 From: Fam Zheng Date: Wed, 26 Apr 2017 11:33:54 +0800 Message-Id: <20170426033413.17192-3-famz@redhat.com> In-Reply-To: <20170426033413.17192-1-famz@redhat.com> References: <20170426033413.17192-1-famz@redhat.com> Subject: [Qemu-devel] [PATCH v15 02/21] block: Define BLK_PERM_MAX List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: eblake@redhat.com, Kevin Wolf , Max Reitz , qemu-block@nongnu.org This is the order of the largest possible permission. Signed-off-by: Fam Zheng --- include/block/block.h | 2 ++ 1 file changed, 2 insertions(+) diff --git a/include/block/block.h b/include/block/block.h index eb0565d..a798f10 100644 --- a/include/block/block.h +++ b/include/block/block.h @@ -224,6 +224,8 @@ enum { BLK_PERM_ALL = 0x1f, }; +#define BLK_PERM_MAX (64 - clz64((uint64_t)BLK_PERM_ALL)) + char *bdrv_perm_names(uint64_t perm); /* disk I/O throttling */ -- 2.9.3