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Modify vm_page_grab_pages() to handle VM_ALLOC_NOWAIT.

Description

Modify vm_page_grab_pages() to handle VM_ALLOC_NOWAIT.

This will allow its use in sendfile_swapin().

Reviewed by: alc, kib
MFC after: 2 weeks
Differential Revision: https://reviews.freebsd.org/D11942

Details

Provenance
markjAuthored on
Reviewer
alc
Differential Revision
D11942: Have vm_page_grab_pages() support VM_ALLOC_NOWAIT
Parents
rS322404: An invalid page can't be dirty.
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