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| author |   Hyeonggon Yoo <42.hyeyoo@gmail.com> | 2021-12-12 06:52:41 +0000 |
|---|---|---|
| committer |   Vlastimil Babka <vbabka@suse.cz> | 2022-01-06 12:27:28 +0100 |
| commit | b01af5c0b0414f96e6c3891e704d1c40faa18813 (patch) | |
| tree | 0ca12daa8bfedb0f814c63a647aac4a0498a74e9 /mm/slab.h | |
| parent | bootmem: Use page->index instead of page->freelist (diff) | |
| download | linux-dev-b01af5c0b0414f96e6c3891e704d1c40faa18813.tar.xz linux-dev-b01af5c0b0414f96e6c3891e704d1c40faa18813.zip | |
mm/slob: Remove unnecessary page_mapcount_reset() function call
After commit 401fb12c68c2 ("mm/sl*b: Differentiate struct slab fields by
sl*b implementations"), we can reorder fields of struct slab depending
on slab allocator.
For now, page_mapcount_reset() is called because page->_mapcount and
slab->units have same offset. But this is not necessary for struct slab.
Use unused field for units instead.
Signed-off-by: Hyeonggon Yoo <42.hyeyoo@gmail.com>
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
Link: https://lore.kernel.org/r/20211212065241.GA886691@odroid
Diffstat (limited to 'mm/slab.h')
| -rw-r--r-- | mm/slab.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/mm/slab.h b/mm/slab.h index f14e723b9e3c..95b9a74a2d51 100644 --- a/mm/slab.h +++ b/mm/slab.h @@ -50,8 +50,8 @@ struct slab { struct list_head slab_list; void *__unused_1; void *freelist; /* first free block */ - void *__unused_2; - int units; + long units; + unsigned int __unused_2; #else #error "Unexpected slab allocator configured" |