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| author |   Vlastimil Babka <vbabka@suse.cz> | 2022-11-16 16:48:23 +0100 |
|---|---|---|
| committer | Vlastimil Babka <vbabka@suse.cz> | 2022-11-27 23:40:39 +0100 |
| commit | 3d97d976e5d58554570003ca5297a67142ae4e29 (patch) | |
| tree | bb012bd3333c67ecd04e89282d3b32ab3153a6d8 /include/linux/slab.h | |
| parent | mm, slub: don't create kmalloc-rcl caches with CONFIG_SLUB_TINY (diff) | |
| download | wireguard-linux-3d97d976e5d58554570003ca5297a67142ae4e29.tar.xz wireguard-linux-3d97d976e5d58554570003ca5297a67142ae4e29.zip | |
mm, slab: ignore SLAB_RECLAIM_ACCOUNT with CONFIG_SLUB_TINY
SLAB_RECLAIM_ACCOUNT caches allocate their slab pages with
__GFP_RECLAIMABLE and can help against fragmentation by grouping pages
by mobility, but on tiny systems mobility grouping is likely disabled
anyway and ignoring SLAB_RECLAIM_ACCOUNT might instead lead to merging
of caches that are made incompatible just by the flag.
Thus with CONFIG_SLUB_TINY, make SLAB_RECLAIM_ACCOUNT ineffective.
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
Acked-by: Mike Rapoport <rppt@linux.ibm.com>
Reviewed-by: Christoph Lameter <cl@linux.com>
Diffstat (limited to 'include/linux/slab.h')
| -rw-r--r-- | include/linux/slab.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/linux/slab.h b/include/linux/slab.h index ae2d19ec8467..37fa41af24b6 100644 --- a/include/linux/slab.h +++ b/include/linux/slab.h @@ -129,7 +129,11 @@ /* The following flags affect the page allocator grouping pages by mobility */ /* Objects are reclaimable */ +#ifndef CONFIG_SLUB_TINY #define SLAB_RECLAIM_ACCOUNT ((slab_flags_t __force)0x00020000U) +#else +#define SLAB_RECLAIM_ACCOUNT ((slab_flags_t __force)0) +#endif #define SLAB_TEMPORARY SLAB_RECLAIM_ACCOUNT /* Objects are short-lived */ /* |