Alan Cox acd11c7499 Introduce vm_fault_hold() and use it to (1) eliminate a long-standing race ...

condition in proc_rwmem() and to (2) simplify the implementation of the
cxgb driver's vm_fault_hold_user_pages().  Specifically, in proc_rwmem()
the requested read or write could fail because the targeted page could be
reclaimed between the calls to vm_fault() and vm_page_hold().

In collaboration with:	kib@
MFC after:	6 weeks

2010-12-20 22:49:31 +00:00

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iw_cxgb

There is no need to test __FreeBSD_version for features that have

2010-02-24 10:16:18 +00:00

toecore

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tom

Introduce vm_fault_hold() and use it to (1) eliminate a long-standing race

2010-12-20 22:49:31 +00:00