mm, slub: move reset of c->page and freelist out of deactivate_slab()

Browse source

deactivate_slab() removes the cpu slab by merging the cpu freelist with slab's
freelist and putting the slab on the proper node's list. It also sets the
respective kmem_cache_cpu pointers to NULL.

By extracting the kmem_cache_cpu operations from the function, we can make it
not dependent on disabled irqs.

Also if we return a single free pointer from ___slab_alloc, we no longer have
to assign kmem_cache_cpu.page before deactivation or care if somebody preempted
us and assigned a different page to our kmem_cache_cpu in the process.

Signed-off-by: Vlastimil Babka <vbabka@suse.cz>

...

This commit is contained in:

Vlastimil Babka 2021-05-12 13:53:34 +02:00

parent 4b1f449ded

commit a019d20162

1 changed files with 18 additions and 13 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

31

mm/slub.c

View file