Kairui Song a4864671ca lib/xarray: introduce a new helper xas_get_order
It can be used after xas_load to check the order of loaded entries. 
Compared to xa_get_order, it saves an XA_STATE and avoid a rewalk.

Added new test for xas_get_order, to make the test work, we have to export
xas_get_order with EXPORT_SYMBOL_GPL.

Also fix a sparse warning by checking the slot value with xa_entry instead
of accessing it directly, as suggested by Matthew Wilcox.

[kasong@tencent.com: simplify comment, sparse warning fix, per Matthew Wilcox]
  Link: https://lkml.kernel.org/r/20240416071722.45997-4-ryncsn@gmail.com
Link: https://lkml.kernel.org/r/20240415171857.19244-4-ryncsn@gmail.com
Signed-off-by: Kairui Song <kasong@tencent.com>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2024-04-25 20:56:09 -07:00
..
2024-01-19 11:59:11 -08:00
2024-02-01 13:06:40 +01:00
2023-11-03 07:08:36 -10:00
2021-01-21 14:06:00 -07:00
2022-03-07 12:48:35 -07:00
2021-08-19 09:02:55 +09:00
2023-02-02 22:50:01 -08:00
2023-02-02 22:50:01 -08:00
2021-01-03 20:05:18 -05:00
2023-03-19 10:02:04 -07:00
2022-03-07 12:48:35 -07:00
2022-04-29 14:38:01 -07:00
2022-10-03 14:03:21 -07:00
2024-03-11 09:38:17 -07:00
2021-08-19 09:02:55 +09:00
2024-02-12 10:35:40 -06:00
2021-07-08 11:48:20 -07:00
2023-08-21 13:46:25 -07:00
2023-04-17 18:01:23 +02:00
2021-07-08 11:48:20 -07:00
2023-10-16 12:44:06 -04:00
2023-08-24 16:20:18 -07:00
2023-10-16 12:44:06 -04:00
2022-10-03 17:34:32 -07:00
2021-07-08 11:48:20 -07:00
2024-02-15 12:17:28 -05:00
2022-06-03 10:34:34 -07:00
2024-02-20 20:47:32 -08:00
2021-06-18 11:43:09 +02:00
2021-07-08 11:48:20 -07:00
2022-01-20 08:52:54 +02:00