slub: use count_partial_free_approx() in slab_out_of_memory()

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slab_out_of_memory() uses count_partial() to get the exact count
of free objects for each node. As it may get called in the slab
allocation path, count_partial_free_approx() can be used to avoid
the risk and overhead of traversing a long partial slab list.

At the same time, show_slab_objects() still uses count_partial().
Thus, slub users can still have the option to access the exact
count of objects via sysfs if the overhead is acceptable to them.

Signed-off-by: Jianfeng Wang <jianfeng.w.wang@oracle.com>
Acked-by: David Rientjes <rientjes@google.com>
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>

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Jianfeng Wang 2024-04-22 21:55:54 -07:00 • committed by Vlastimil Babka

parent 046f4c6909

commit b3d8a8e870

1 changed files with 1 additions and 1 deletions

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mm/slub.c

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