On Thu, Apr 06, 2023 at 04:41:01PM +0200, Christoph Hellwig wrote: > Currently nothing waits for the synchronous reads before accessing > the data. Switch them to an on-stack bio and submit_bio_wait to > make sure the I/O has actually completed when the work item has been > flushed. This also removes the call to page_endio that would unlock > a page that has never been locked. > > Drop the partial_io/sync flag, as chaining only makes sense for the > asynchronous reads of the entire page. > > Signed-off-by: Christoph Hellwig <hch@xxxxxx> > Reviewed-by: Sergey Senozhatsky <senozhatsky@xxxxxxxxxxxx> Acked-by: Minchan Kim <minchan@xxxxxxxxxx> So this fixes zram_rw_page + CONFIG_ZRAM_WRITEBACK feature on ppc some arch where PAGE_SIZE is not 4K. IIRC, we didn't have any report since the writeback feature was introduced. Then, we may skip having the fix into stable?
