Files
linux/include/linux
Pavel Begunkov c42bca92be bio: don't copy bvec for direct IO
The block layer spends quite a while in blkdev_direct_IO() to copy and
initialise bio's bvec. However, if we've already got a bvec in the input
iterator it might be reused in some cases, i.e. when new
ITER_BVEC_FLAG_FIXED flag is set. Simple tests show considerable
performance boost, and it also reduces memory footprint.

Suggested-by: Matthew Wilcox <willy@infradead.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Reviewed-by: Ming Lei <ming.lei@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2021-01-25 08:58:24 -07:00
..
2020-12-09 19:26:02 -06:00
2021-01-25 08:58:24 -07:00
2020-11-06 08:08:37 -08:00
2020-09-21 15:00:40 -07:00
2020-12-02 09:46:55 -07:00
2020-08-19 14:14:29 +02:00
2020-12-19 11:18:38 -08:00
2020-10-16 17:21:51 +02:00
2020-12-14 16:24:19 +01:00
2020-12-11 14:02:14 -08:00
2020-12-02 22:00:22 -08:00
2020-08-12 20:42:08 +02:00
2020-12-10 12:42:59 -06:00
2020-11-16 16:31:41 +01:00
2020-11-16 15:20:01 +01:00
2020-11-16 08:14:30 -07:00
2020-08-04 21:02:38 -04:00
2020-12-02 22:10:35 -08:00
2020-11-23 14:16:55 +00:00
2020-12-08 14:14:48 +00:00
2020-09-16 08:54:53 -05:00
2020-11-24 16:47:48 +01:00
2020-12-15 16:19:31 +01:00
2020-12-15 16:19:31 +01:00
2020-09-04 09:25:20 -07:00
2021-01-22 15:09:42 +01:00
2020-09-23 18:02:49 -07:00
2020-12-07 10:29:57 +01:00
2020-09-04 12:46:07 +01:00
2020-12-04 12:23:25 +01:00
2020-08-27 16:06:47 -04:00
2020-09-24 19:49:36 -07:00
2020-12-15 15:11:08 -06:00
2020-08-31 12:52:33 -07:00
2020-12-16 13:08:18 -08:00
2020-10-18 09:27:10 -07:00
2020-12-03 11:20:52 +01:00
2020-08-18 17:06:15 +02:00
2020-12-15 12:13:39 -08:00
2020-12-07 17:12:49 -07:00
2020-11-06 10:05:18 -08:00
2020-12-10 16:17:15 +01:00
2020-12-15 12:13:37 -08:00
2020-11-24 16:47:49 +01:00
2020-12-10 10:45:36 +01:00
2020-09-26 22:55:05 -04:00
2020-10-30 21:57:04 +01:00
2020-11-16 15:20:01 +01:00
2020-12-04 16:54:35 +01:00
2020-11-09 18:39:36 +01:00
2020-09-10 14:03:31 -07:00
2020-08-19 14:13:20 +02:00
2020-08-01 11:28:17 +02:00
2020-12-15 12:13:41 -08:00
2020-10-05 13:21:49 +02:00