Re: [PATCH] f2fs: fix missing read bio submission on large folio error

[Chao Yu <chao@kernel.org>]

On 5/20/26 17:52, Wenjie Qi wrote:
> From: Wenjie Qi <qiwenjie@xiaomi.com>
> 
> f2fs_read_data_large_folio() can keep a read bio across multiple
> readahead folios.  If a later folio hits an error before any of its
> blocks are added to the bio, folio_in_bio is false and the current error
> path returns immediately after ending that folio.
> 
> This can leave the bio accumulated for earlier folios unsubmitted.  Those
> folios then never receive read completion, and readers can wait
> indefinitely on the locked folios.
> 
> Route errors through the common out path so any pending bio is submitted
> before returning.  Stop consuming more readahead folios once an error is
> seen, and only wait on and clear the current folio when it was actually
> added to the bio.
> 

Cc: stable@kernel.org

> Fixes: a5d8b9d94e18 ("f2fs: fix to unlock folio in f2fs_read_data_large_folio()")
> Signed-off-by: Wenjie Qi <qiwenjie@xiaomi.com>

Reviewed-by: Chao Yu <chao@kernel.org>

BTW, I can not apply the patch, can you please rebase it to last dev branch?

Thanks,