Date: Mon, 13 Sep 2010 20:29:09 +0000 (UTC) From: Konstantin Belousov <kib@FreeBSD.org> To: cvs-src-old@freebsd.org Subject: cvs commit: src/sys/kern vfs_bio.c vfs_subr.c Message-ID: <201009132029.o8DKTL7H021825@repoman.freebsd.org>
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kib 2010-09-13 20:29:09 UTC
FreeBSD src repository
Modified files: (Branch: RELENG_8)
sys/kern vfs_bio.c vfs_subr.c
Log:
SVN rev 212583 on 2010-09-13 20:29:09Z by kib
MFC r211213:
The buffers b_vflags field is not always properly protected by
bufobj lock. If b_bufobj is not NULL, then bufobj lock should be
held when manipulating the flags. Not doing this sometimes leaves
BV_BKGRDINPROG to be erronously set, causing softdep' getdirtybuf() to
stuck indefinitely in "getbuf" sleep, waiting for background write to
finish which is not actually performed.
Add BO_LOCK() in the cases where it was missed.
Revision Changes Path
1.568.2.6 +49 -4 src/sys/kern/vfs_bio.c
1.767.2.13 +10 -0 src/sys/kern/vfs_subr.c
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