Messages in this thread | | | Subject | Re: [PATCH 3/3] mm/mmap.c: extract __vma_unlink_list as counter part for __vma_link_list | From | Vlastimil Babka <> | Date | Wed, 14 Aug 2019 11:19:37 +0200 |
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On 8/14/19 8:57 AM, Wei Yang wrote: > On Tue, Aug 13, 2019 at 10:16:11PM -0700, Christoph Hellwig wrote: >>Btw, is there any good reason we don't use a list_head for vma linkage? > > Not sure, maybe there is some historical reason?
Seems it was single-linked until 2010 commit 297c5eee3724 ("mm: make the vma list be doubly linked") and I guess it was just simpler to add the vm_prev link.
Conversion to list_head might be an interesting project for some "advanced beginner" in the kernel :)
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