Date: Sun, 30 Apr 2006 03:57:46 +0000 (UTC) From: Kris Kennaway <kris@FreeBSD.org> To: src-committers@FreeBSD.org, cvs-src@FreeBSD.org, cvs-all@FreeBSD.org Subject: cvs commit: src/sys/kern vfs_lookup.c Message-ID: <200604300357.k3U3vkfT077331@repoman.freebsd.org>
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kris 2006-04-30 03:57:46 UTC
FreeBSD src repository
Modified files: (Branch: RELENG_6)
sys/kern vfs_lookup.c
Log:
MFC r1.90, r1.91:
> - Lock giant when assigning ni_vp and keep vfslocked state valid.
> - Consistently track ni_dvp and ni_vp with dvfslocked and vfslocked rather
> than trying to optimize it into a single lock. This adds more calls to
> lock giant with non smpsafe filesystems but is the only way to reliably
> hold the correct lock.
> - Remove an invalid assert in the mountedhere case in lookup and fix the
> code to properly deal with the scenario. We can actually have a lookup
> that returns dp == dvp with mountedhere set with certain unmount races.
Approved by: re (scottl)
Revision Changes Path
1.80.2.7 +16 -13 src/sys/kern/vfs_lookup.c
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