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| /freebsd-10.2-release/sys/kern/ | ||
| H A D | kern_acct.c | diff 155431 Tue Feb 07 16:04:03 MST 2006 jhb - Add a kthread to periodically call acctwatch() when accounting is active instead of calling acctwatch() from softclock. The acctwatch() function needs to hold an sx lock and also makes a VFS call, and neither of these are good things (or safe) to do from a callout. The kthread only exists and is running when accounting is turned on; it is started and stopped as needed. I didn't run acctwatch() via the thread taskqueue at Robert's request as he was worried that if the accounting file was over NFS the VFS_STAT() calls might stall other work on the taskqueue. - Add an acct_disable() function to take care of closing the accounting vnode and cleaning up so we don't duplicate the same code in two different places. MFC after: 3 days |
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