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xen-devel
[Xen-devel] PG_blkback handling issue?
This flag, introduced with blktap2, seems to be sticky when blktap2 isn't
actively involved in any operations, since blkback-pagemap.c is only ever
setting or testing this bit. Shouldn't blkback_pagemap_clear() clear it?
And it would seem to me that, for safety purposes, both PG_blkback and
PG_netback should be included in the checks in mm/page_alloc.c which
already look at PG_foreign and (for ix86) PG_pinned.
Thanks, Jan
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