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[0/3] mm/zsmalloc: some cleanup for get/set_zspage_mapping()

Message ID 20240220-b4-zsmalloc-cleanup-v1-0-5c5ee4ccdd87@bytedance.com (mailing list archive)
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Series mm/zsmalloc: some cleanup for get/set_zspage_mapping() | expand

Message

Chengming Zhou Feb. 20, 2024, 6:52 a.m. UTC 
The discussion[1] with Sergey shows there are some cleanup works to do
in get/set_zspage_mapping():

- the fullness returned from get_zspage_mapping() is not stable outside
  pool->lock, this usage pattern is confusing, but should be ok in this
  free_zspage path.

- we seldom use the class_idx returned from get_zspage_mapping(), only
  free_zspage path use to get its class.

- set_zspage_mapping() always set the zspage->class, but it's never
  changed after zspage allocated.

[1] https://lore.kernel.org/all/a6c22e30-cf10-4122-91bc-ceb9fb57a5d6@bytedance.com/

Signed-off-by: Chengming Zhou <zhouchengming@bytedance.com>
---
Chengming Zhou (3):
      mm/zsmalloc: remove set_zspage_mapping()
      mm/zsmalloc: remove_zspage() don't need fullness parameter
      mm/zsmalloc: remove get_zspage_mapping()

 mm/zsmalloc.c | 55 +++++++++++++------------------------------------------
 1 file changed, 13 insertions(+), 42 deletions(-)
---
base-commit: 207636f0f52428f3b46540b212d6f93c6ac484cf
change-id: 20240220-b4-zsmalloc-cleanup-560a4159bb6b

Best regards,