| commit | 120ac5dd96c9a4689e25b09a8feb47df823c687d | |
| author | Matthew Dillon <dillon@apollo.backplane.com> | |
| Tue, 26 Jul 2016 00:06:52 +0000 (25 17:06 -0700) | ||
| committer | Matthew Dillon <dillon@apollo.backplane.com> | |
| Tue, 26 Jul 2016 00:24:54 +0000 (25 17:24 -0700) | ||
| tree | 85fe93ab2488daf3b2b55fbe53f2a1b077d27c68 | treesnapshot (tar.gz zip) |
| parent | 018662b54d0325e59616de36351a4caac3484c98 | commitdiff |
kernel - Fix VM bug introduced earlier this month
* Adding the yields to the VM page teardown and related code was a great
idea (~Jul 10th commits), but it also introduced a bug where the page
could get torn-out from under the scan due to the vm_object's token being
temporarily lost.
* Re-check page object ownership and (when applicable) its pindex before
acting on the page.
* Adding the yields to the VM page teardown and related code was a great
idea (~Jul 10th commits), but it also introduced a bug where the page
could get torn-out from under the scan due to the vm_object's token being
temporarily lost.
* Re-check page object ownership and (when applicable) its pindex before
acting on the page.
| sys/vm/vm_object.c | diffblobblamehistory |