tree c8b047bc9e508d272501e549e1f9a6e4b8647a46
parent 75c8ff281d7a6faa650bb9b32052f3ee1b5f8e83
author Vlastimil Babka <vbabka@suse.cz> 1620750309 +0200
committer Vlastimil Babka <vbabka@suse.cz> 1630710740 +0200

mm, slub: restructure new page checks in ___slab_alloc()

When we allocate slab object from a newly acquired page (from node's partial
list or page allocator), we usually also retain the page as a new percpu slab.
There are two exceptions - when pfmemalloc status of the page doesn't match our
gfp flags, or when the cache has debugging enabled.

The current code for these decisions is not easy to follow, so restructure it
and add comments. The new structure will also help with the following changes.
No functional change.

Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
Acked-by: Mel Gorman <mgorman@techsingularity.net>