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f2fs: fix extent corrupotion during directIO in LFS mode 

In LFS mode, por_fsstress testcase reports a bug as below:

[ASSERT] (fsck_chk_inode_blk: 931)  --> ino: 0x12fe has wrong ext: [pgofs:142, blk:215424, len:16]

Since commit f847c699cf ("f2fs: allow out-place-update for direct
IO in LFS mode"), we start to allow OPU mode for direct IO, however,
we missed to update extent cache in __allocate_data_block(), finally,
it cause extent field being inconsistent with physical block address,
fix it.

Fixes: f847c699cf ("f2fs: allow out-place-update for direct IO in LFS mode")
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Chao Yu 2019-08-28 17:33:35 +08:00 committed by Jaegeuk Kim
parent 1166c1f2f6
commit 86f35dc39e
1 changed files with 1 additions and 1 deletions
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2
fs/f2fs/data.c
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@ -1018,7 +1018,7 @@ static int __allocate_data_block(struct dnode_of_data *dn, int seg_type)
if (GET_SEGNO(sbi, old_blkaddr) != NULL_SEGNO)
invalidate_mapping_pages(META_MAPPING(sbi),
old_blkaddr, old_blkaddr);
f2fs_set_data_blkaddr(dn);
f2fs_update_data_blkaddr(dn, dn->data_blkaddr);
/*
* i_size will be updated by direct_IO. Otherwise, we'll get stale