Re: [PATCH] mm/hugetlb: i_mmap_lock_write before unmapping in remove_inode_hugepages

[Davidlohr Bueso]

On Wed, 21 Oct 2015, Mike Kravetz wrote:

> Code was added to remove_inode_hugepages that will unmap a page if
> it is mapped.  i_mmap_lock_write() must be taken during the call
> to hugetlb_vmdelete_list().  This is to prevent mappings(vmas) from
> being added or deleted while the list of vmas is being examined.
                                  ^^^^ interval-tree.
> Signed-off-by: Mike Kravetz <mike.kravetz@xxxxxxxxxx>

Reviewed-by: Davidlohr Bueso <dbueso@xxxxxxx>
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