From: Yunlei He <heyunlei@huawei.com>
Date: Mon, 26 Mar 2018 09:32:23 +0000 (+0800)
Subject: f2fs: Add a segment type check in inplace write
X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=d21b0f238adf4641a72f4b0dd4a2b10aa36d09f5;p=openwrt%2Fstaging%2Fblogic.git

f2fs: Add a segment type check in inplace write

This patch add a segment type check in IPU, in
case of something wrong with blkadd in dnode.

Signed-off-by: Yunlei He <heyunlei@huawei.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
---

diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c
index 637980d04503..5854cc4e1d67 100644
--- a/fs/f2fs/segment.c
+++ b/fs/f2fs/segment.c
@@ -2790,10 +2790,15 @@ void write_data_page(struct dnode_of_data *dn, struct f2fs_io_info *fio)
 int rewrite_data_page(struct f2fs_io_info *fio)
 {
 	int err;
+	struct f2fs_sb_info *sbi = fio->sbi;
 
 	fio->new_blkaddr = fio->old_blkaddr;
 	/* i/o temperature is needed for passing down write hints */
 	__get_segment_type(fio);
+
+	f2fs_bug_on(sbi, !IS_DATASEG(get_seg_entry(sbi,
+			GET_SEGNO(sbi, fio->new_blkaddr))->type));
+
 	stat_inc_inplace_blocks(fio->sbi);
 
 	err = f2fs_submit_page_bio(fio);