mm/slab: move kfree() from slab_common.c to slub.c

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This should result in better code. Currently kfree() makes a function
call between compilation units to __kmem_cache_free() which does its own
virt_to_slab(), throwing away the struct slab pointer we already had in
kfree(). Now it can be reused. Additionally kfree() can now inline the
whole SLUB freeing fastpath.

Also move over free_large_kmalloc() as the only callsites are now in
slub.c, and make it static.

Reviewed-by: Kees Cook <keescook@chromium.org>
Acked-by: David Rientjes <rientjes@google.com>
Tested-by: David Rientjes <rientjes@google.com>
Reviewed-by: Hyeonggon Yoo <42.hyeyoo@gmail.com>
Tested-by: Hyeonggon Yoo <42.hyeyoo@gmail.com>
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>

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This commit is contained in:

Vlastimil Babka 2023-10-03 15:27:11 +02:00

parent b52ef56e9b

commit b774d3e326

3 changed files with 46 additions and 54 deletions

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4

mm/slab.h

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45

mm/slab_common.c

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51

mm/slub.c

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