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authorMichal Hocko <mhocko@suse.com>2017-06-02 14:46:19 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2017-06-02 15:07:37 -0700
commit4f4f2ba9c531b3d7cee293dd3654ba3b86e7d220 (patch)
treee76d33e876e50dcbeb4dc88a919003657911b785 /usr
parent60b0a8c3d2480f3b57282b47b7cae7ee71c48635 (diff)
mm: clarify why we want kmalloc before falling backto vmallock
While converting drm_[cm]alloc* helpers to kvmalloc* variants Chris Wilson has wondered why we want to try kmalloc before vmalloc fallback even for larger allocations requests. Let's clarify that one larger physically contiguous block is less likely to fragment memory than many scattered pages which can prevent more large blocks from being created. [akpm@linux-foundation.org: coding-style fixes] Link: http://lkml.kernel.org/r/20170517080932.21423-1-mhocko@kernel.org Signed-off-by: Michal Hocko <mhocko@suse.com> Suggested-by: Chris Wilson <chris@chris-wilson.co.uk> Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk> Acked-by: Vlastimil Babka <vbabka@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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