Date: Thu, 8 Nov 2001 19:42:28 -0800 (PST) From: Matt Dillon <dillon@FreeBSD.org> To: cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org Subject: cvs commit: src/sys/dev/vn vn.c Message-ID: <200111090342.fA93gSV34824@freefall.freebsd.org>
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dillon 2001/11/08 19:42:28 PST
Modified files: (Branch: RELENG_4)
sys/dev/vn vn.c
Log:
Fix a long standing (since '94) error in VN related to file-backed VN
devices. The VOP_ISLOCKED() call was completely bogus and could cause
the VN device to issue VOP_READ() and VOP_WRITE() calls without obtaining
the vnode lock if another process (e.g. like the buf_daemon or syncer)
was holding the lock. This could potentially result in a corrupt filesystem.
(MD in -current already does the right thing).
Revision Changes Path
1.105.2.3 +5 -12 src/sys/dev/vn/vn.c
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