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charset=us-ascii Content-Disposition: inline In-Reply-To: <20200526195123.29053-3-axboe@kernel.dk> X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Tue, May 26, 2020 at 01:51:13PM -0600, Jens Axboe wrote: > The read-ahead shouldn't block, so allow it to be done even if > IOCB_NOWAIT is set in the kiocb. > > Signed-off-by: Jens Axboe Acked-by: Johannes Weiner Looks reasonable. Especially after patch 1 - although it seems that even before that, IOCB_NOWAIT could have occasionally ended up in page_cache_async_readahead(), which isn't too different from the sync variant except for the range calculations, and may have blocked on IO submission in the past.