https://github.com/torvalds/linux
Revision 865762a8119e74b5f0e236d2d8eaaf8be9292a06 authored by Jesper Dangaard Brouer on 20 November 2015, 23:57:58 UTC, committed by Linus Torvalds on 22 November 2015, 19:58:44 UTC
Adjust kmem_cache_alloc_bulk API before we have any real users. Adjust API to return type 'int' instead of previously type 'bool'. This is done to allow future extension of the bulk alloc API. A future extension could be to allow SLUB to stop at a page boundary, when specified by a flag, and then return the number of objects. The advantage of this approach, would make it easier to make bulk alloc run without local IRQs disabled. With an approach of cmpxchg "stealing" the entire c->freelist or page->freelist. To avoid overshooting we would stop processing at a slab-page boundary. Else we always end up returning some objects at the cost of another cmpxchg. To keep compatible with future users of this API linking against an older kernel when using the new flag, we need to return the number of allocated objects with this API change. Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com> Cc: Vladimir Davydov <vdavydov@virtuozzo.com> Acked-by: Christoph Lameter <cl@linux.com> Cc: Pekka Enberg <penberg@kernel.org> Cc: David Rientjes <rientjes@google.com> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
1 parent 0337451
Tip revision: 865762a8119e74b5f0e236d2d8eaaf8be9292a06 authored by Jesper Dangaard Brouer on 20 November 2015, 23:57:58 UTC
slab/slub: adjust kmem_cache_alloc_bulk API
slab/slub: adjust kmem_cache_alloc_bulk API
Tip revision: 865762a
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.gitignore | -rw-r--r-- | 1.2 KB |
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