Searched hist:"1 bb6b810" (Results 1 – 3 of 3) sorted by relevance
| /openbmc/linux/block/ |
| H A D | fops.c | 1bb6b810 Wed Oct 27 07:21:07 CDT 2021 Pavel Begunkov <asml.silence@gmail.com> block: avoid extra iter advance with async iocb
Nobody cares about iov iterators state if we return -EIOCBQUEUED, so as
the we now have __blkdev_direct_IO_async(), which gets pages only once,
we can skip expensive iov_iter_advance(). It's around 1-2% of all CPU
spent.
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/a6158edfbfa2ae3bc24aed29a72f035df18fad2f.1635337135.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
|
| H A D | bio.c | 1bb6b810 Wed Oct 27 07:21:07 CDT 2021 Pavel Begunkov <asml.silence@gmail.com> block: avoid extra iter advance with async iocb
Nobody cares about iov iterators state if we return -EIOCBQUEUED, so as
the we now have __blkdev_direct_IO_async(), which gets pages only once,
we can skip expensive iov_iter_advance(). It's around 1-2% of all CPU
spent.
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/a6158edfbfa2ae3bc24aed29a72f035df18fad2f.1635337135.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
|
| /openbmc/linux/include/linux/ |
| H A D | bio.h | 1bb6b810 Wed Oct 27 07:21:07 CDT 2021 Pavel Begunkov <asml.silence@gmail.com> block: avoid extra iter advance with async iocb
Nobody cares about iov iterators state if we return -EIOCBQUEUED, so as
the we now have __blkdev_direct_IO_async(), which gets pages only once,
we can skip expensive iov_iter_advance(). It's around 1-2% of all CPU
spent.
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/a6158edfbfa2ae3bc24aed29a72f035df18fad2f.1635337135.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
|