We should only align start offset of bio with defined IO_SIZE for below
conditions:
a. mode=lfs mount option
b. write IOs
c. Out-place-update
d. non-meta pages

Signed-off-by: Chao Yu <[email protected]>
---
 fs/f2fs/data.c | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c
index 1375fef11146..53fe79c70406 100644
--- a/fs/f2fs/data.c
+++ b/fs/f2fs/data.c
@@ -190,6 +190,9 @@ static inline void __submit_bio(struct f2fs_sb_info *sbi,
                        current->plug && (type == DATA || type == NODE))
                        blk_finish_plug(current->plug);
 
+               if (!test_opt(sbi, LFS))
+                       goto submit_io;
+
                if (type != DATA && type != NODE)
                        goto submit_io;
 
@@ -395,11 +398,12 @@ int f2fs_submit_page_mbio(struct f2fs_io_info *fio)
                __submit_merged_bio(io);
 alloc_new:
        if (io->bio == NULL) {
-               if ((fio->type == DATA || fio->type == NODE) &&
+               if (test_opt(sbi, LFS) &&
+                       !is_read && (fio->type == DATA || fio->type == NODE) &&
                                fio->new_blkaddr & F2FS_IO_SIZE_MASK(sbi)) {
                        err = -EAGAIN;
-                       if (!is_read)
-                               dec_page_count(sbi, WB_DATA_TYPE(bio_page));
+                       f2fs_bug_on(sbi, fio->new_blkaddr == fio->old_blkaddr);
+                       dec_page_count(sbi, WB_DATA_TYPE(bio_page));
                        goto out_fail;
                }
                io->bio = __bio_alloc(sbi, fio->new_blkaddr,
-- 
2.8.2.295.g3f1c1d0

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