git: kernel - Concurrent fork/exec (2)
Matthew Dillon
dillon at crater.dragonflybsd.org
Sun Oct 13 11:00:03 PDT 2013
commit 61dac052d2182bc5593ce2d091ea43b7541477b7
Author: Matthew Dillon <dillon at apollo.backplane.com>
Date: Sun Oct 13 10:48:57 2013 -0700
kernel - Concurrent fork/exec (2)
* Fix bug in vm_fault() path that can cause a token live lock.
When taking a write fault first_shared must be set to 0
because the fault might involve calling swap_pager_unswapped(),
which currently requires an exclusive VM object lock.
Summary of changes:
sys/vm/vm_fault.c | 24 ++++++++++++++++++++++++
1 file changed, 24 insertions(+)
http://gitweb.dragonflybsd.org/dragonfly.git/commitdiff/61dac052d2182bc5593ce2d091ea43b7541477b7
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