Ning Qu wrote:
> I just tried, and it seems working fine now without the deadlock anymore. I
> can run some big internal test with about 40GB files in sysv shm. Just move
> the line before the locking happens in vma_adjust, something as below, the
> line number is not accurate because my patch is b
From: "Kirill A. Shutemov"
The base scheme is the same as for anonymous pages, but we walk by
mapping->i_mmap rather then anon_vma->rb_root.
When we add a huge page to page cache we take only reference to head
page, but on split we need to take addition reference to all tail pages
since they are
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