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 637980d04503bae8178b5c7244db5457255db9f8..5854cc4e1d67c01045f41b99403aaaefbfc27894 100644 (file)
--- 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);