Date: Thu, 21 May 2009 12:23:54 -0400 From: John Baldwin <jhb@freebsd.org> To: Kostik Belousov <kostikbel@gmail.com> Cc: Scott Long <scottl@samsco.org>, src-committers@freebsd.org, svn-src-all@freebsd.org, attilio@freebsd.org, rwatson@freebsd.org, svn-src-head@freebsd.org, "M. Warner Losh" <imp@bsdimp.com> Subject: Re: svn commit: r192535 - head/sys/kern Message-ID: <200905211223.55113.jhb@freebsd.org> In-Reply-To: <20090521161535.GQ1927@deviant.kiev.zoral.com.ua> References: <3bbf2fe10905210629p46c7a204v6863aaba77354462@mail.gmail.com> <200905211211.00168.jhb@freebsd.org> <20090521161535.GQ1927@deviant.kiev.zoral.com.ua>
next in thread | previous in thread | raw e-mail | index | archive | help
On Thursday 21 May 2009 12:15:35 pm Kostik Belousov wrote: > On Thu, May 21, 2009 at 12:10:59PM -0400, John Baldwin wrote: > Another thing done inside destroy_dev is the call to the destructors > of the cdevpriv data, that never had any restrictions on the sleepable > context. > > We do have the KPI for the callers that cannot drop the locks and need > to do destroy_dev, destroy_dev_sched(9). With the caveat that you can't make any assumptions about other threads in your cdevsw routines being finished when it returns. If you have per-device data structures you need to free that are not handled by cdevpriv then you probably cannot safely free them. -- John Baldwin
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?200905211223.55113.jhb>