From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mx1.redhat.com ([209.132.183.28]:48714 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S964837AbcDLQnG (ORCPT ); Tue, 12 Apr 2016 12:43:06 -0400 From: Brian Foster To: xfs@oss.sgi.com Cc: linux-block@vger.kernel.org, linux-fsdevel@vger.kernel.org, dm-devel@redhat.com, Mike Snitzer Subject: [RFC v2 PATCH 03/10] block: add block_device_operations methods to set and get reserved space Date: Tue, 12 Apr 2016 12:42:46 -0400 Message-Id: <1460479373-63317-4-git-send-email-bfoster@redhat.com> In-Reply-To: <1460479373-63317-1-git-send-email-bfoster@redhat.com> References: <1460479373-63317-1-git-send-email-bfoster@redhat.com> Sender: linux-fsdevel-owner@vger.kernel.org List-ID: From: Mike Snitzer [BF: - Killed wrapper functions. - Condensed to single bdev op.] Signed-off-by: Mike Snitzer --- include/linux/blkdev.h | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index 669e419..6c6ea96 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -1650,6 +1650,10 @@ struct blk_dax_ctl { pfn_t pfn; }; +#define BDEV_RES_GET 0 +#define BDEV_RES_MOD (1 << 0) +#define BDEV_RES_PROVISION (1 << 1) + struct block_device_operations { int (*open) (struct block_device *, fmode_t); void (*release) (struct gendisk *, fmode_t); @@ -1667,6 +1671,8 @@ struct block_device_operations { int (*getgeo)(struct block_device *, struct hd_geometry *); /* this callback is with swap_lock and sometimes page table lock held */ void (*swap_slot_free_notify) (struct block_device *, unsigned long); + int (*reserve_space) (struct block_device *, int, sector_t, sector_t, + sector_t *); struct module *owner; const struct pr_ops *pr_ops; }; -- 2.4.11