Matthew Macy 1e4732cbda
Decouple arc_read_done callback from arc buf instantiation
Add ARC_FLAG_NO_BUF to indicate that a buffer need not be
instantiated.  This fixes a ~20% performance regression on
cached reads due to zfetch changes.

Reviewed-by: Tony Nguyen <tony.nguyen@delphix.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Matthew Ahrens <mahrens@delphix.com>
Signed-off-by: Matt Macy <mmacy@FreeBSD.org>
Closes #11220 
Closes #11232
2020-12-09 15:05:06 -08:00
..
2020-11-13 13:51:51 -08:00
2020-11-02 11:51:12 -08:00
2020-08-20 10:30:06 -07:00
2019-07-26 10:54:14 -07:00
2020-07-29 16:35:33 -07:00
2020-07-29 16:35:33 -07:00
2019-06-19 09:48:12 -07:00
2020-08-17 15:25:37 -07:00
2020-06-18 12:21:18 -07:00
2019-12-03 09:51:44 -08:00
2020-11-02 11:51:12 -08:00
2020-08-20 10:30:06 -07:00
2020-11-10 10:37:10 -08:00
2020-06-09 21:24:09 -07:00
2020-08-20 10:30:06 -07:00
2020-06-18 12:20:38 -07:00
2020-11-13 13:51:51 -08:00
2020-09-04 10:29:39 -07:00
2020-06-18 12:21:25 -07:00
2020-09-04 10:34:28 -07:00
2020-06-18 12:21:25 -07:00
2017-10-11 16:54:48 -04:00
2020-06-18 12:21:25 -07:00
2020-11-13 13:51:51 -08:00
2020-11-13 13:51:51 -08:00
2020-11-13 13:51:51 -08:00
2019-06-19 09:48:12 -07:00
2020-07-29 16:35:33 -07:00
2020-07-29 16:35:33 -07:00
2020-08-26 21:41:09 -07:00
2020-06-18 12:21:25 -07:00
2020-06-18 12:21:25 -07:00
2020-06-18 12:21:25 -07:00
2019-09-02 17:56:41 -07:00
2020-11-13 13:51:51 -08:00
2020-11-02 11:51:12 -08:00
2019-10-09 10:36:03 -07:00
2020-11-13 13:51:51 -08:00
2020-11-13 13:51:51 -08:00
2020-11-13 13:51:51 -08:00
2020-11-13 13:51:51 -08:00
2020-11-13 13:51:51 -08:00
2020-11-20 13:14:45 -08:00
2020-07-29 16:35:33 -07:00
2020-06-18 12:21:25 -07:00
2019-09-02 17:56:41 -07:00
2020-10-02 17:44:10 -07:00
2020-06-18 12:20:38 -07:00
2020-11-13 13:51:51 -08:00
2020-10-02 17:44:10 -07:00
2020-11-24 09:28:42 -08:00
2020-06-18 12:20:38 -07:00
2020-11-13 13:51:51 -08:00
2020-11-13 13:51:51 -08:00
2020-06-18 12:21:25 -07:00
2020-06-18 12:21:18 -07:00
2020-09-03 20:09:52 -07:00
2020-11-17 09:50:52 -08:00