From mboxrd@z Thu Jan 1 00:00:00 1970 From: Damien Le Moal Subject: [PATCH 6/9] f2fs: Do not allow adaptive mode for host-managed zoned block devices Date: Fri, 28 Oct 2016 16:55:34 +0900 Message-ID: <1477641337-12321-7-git-send-email-damien.lemoal@wdc.com> References: <1477641337-12321-1-git-send-email-damien.lemoal@wdc.com> Mime-Version: 1.0 Content-Type: text/plain Return-path: In-Reply-To: <1477641337-12321-1-git-send-email-damien.lemoal@wdc.com> Sender: linux-fsdevel-owner@vger.kernel.org To: jaegeuk@kernel.org, yuchao0@huawei.com Cc: linux-fsdevel@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net, Hannes Reinecke , Shaun Tancheff , Damien Le Moal List-Id: linux-f2fs-devel.lists.sourceforge.net The LFS mode is mandatory for host-managed zoned block devices as update in place optimizations are not possible for segments in sequential zones. Signed-off-by: Damien Le Moal --- fs/f2fs/super.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c index 2c8a12e..58fd69d 100644 --- a/fs/f2fs/super.c +++ b/fs/f2fs/super.c @@ -518,6 +518,13 @@ static int parse_options(struct super_block *sb, char *options) return -ENOMEM; if (strlen(name) == 8 && !strncmp(name, "adaptive", 8)) { + if (f2fs_sb_mounted_blkzoned(sb)) { + f2fs_msg(sb, KERN_WARNING, + "adaptive mode is not allowed with " + "zoned block device feature"); + kfree(name); + return -EINVAL; + } set_opt_mode(sbi, F2FS_MOUNT_ADAPTIVE); } else if (strlen(name) == 3 && !strncmp(name, "lfs", 3)) { -- 2.7.4