Messages in this thread | | | Date | Wed, 23 Jul 2014 14:23:47 +0300 | From | "Kirill A. Shutemov" <> | Subject | Re: [PATCH v8 02/22] Allow page fault handlers to perform the COW |
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On Tue, Jul 22, 2014 at 03:47:50PM -0400, Matthew Wilcox wrote: > Currently COW of an XIP file is done by first bringing in a read-only > mapping, then retrying the fault and copying the page. It is much more > efficient to tell the fault handler that a COW is being attempted (by > passing in the pre-allocated page in the vm_fault structure), and allow > the handler to perform the COW operation itself. > > Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com> > Reviewed-by: Jan Kara <jack@suse.cz>
Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
-- Kirill A. Shutemov
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