Date: Mon, 29 Jan 2001 22:31:59 -0800 (PST) From: Matt Dillon <dillon@FreeBSD.org> To: cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org Subject: cvs commit: src/sys/ufs/ffs ffs_softdep.c Message-ID: <200101300631.f0U6VxF61959@freefall.freebsd.org>
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dillon 2001/01/29 22:31:59 PST
Modified files:
sys/ufs/ffs ffs_softdep.c
Log:
Fix a race between the syncer and umount. When you umount a softupdates
filesystem softdep_process_worklist() is called in a loop until it indicates
that no dependancies remain, but the determination of that fact depends on
there only being one softdep_process_worklist() instance running. It was
possible for the syncer to also be running softdep_process_worklist()
and the pre-existing checks in the code to prevent this were not sufficient
to prevent the race. This patch solves the problem.
Approved-by: mckusick
Revision Changes Path
1.81 +39 -13 src/sys/ufs/ffs/ffs_softdep.c
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