[Bug 200871] F2FS experiences data loss (entry is completely lost) when an I/O failure occurs.

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https://bugzilla.kernel.org/show_bug.cgi?id=200871

--- Comment #16 from Stathis Maneas (smaneas@cs.toronto.edu) ---
I am sorry for the delay! I can definitely help by adding the aforementioned
statements!

After adding them and observing the output of dmesg, I can observe that only
the second statement gets actually invoked:
[ 1026.438986] f2fs_wait_on_node_pages_writeback, eio:0

Therefore, this indicates that the following condition is not true under the
specified workload:
if (unlikely(bio->bi_status)) { ... }

I tried moving the first print statement at the beginning of the following for
loop,
bio_for_each_segment_all(bvec, bio, i) { ... }

but still, I am not observing any errors for the segment (block) of interest:
[   76.603891] f2fs_write_end_io, ino:1, idx:4, eio:0, type:7
[   76.603893] f2fs_write_end_io, is_dummy:0 bio_status:0

Is there something else we can try?

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