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From: Konstantin Belousov <kib@FreeBSD.org>
Date: Tue, 10 Oct 2006 09:20:54 +0000 (UTC)
To: src-committers@FreeBSD.org, cvs-src@FreeBSD.org, cvs-all@FreeBSD.org
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Cc: 
Subject: cvs commit: src/sys/ufs/ffs ffs_inode.c ffs_snapshot.c ffs_vnops.c
 src/sys/ufs/ufs inode.h ufs_vnops.c
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kib         2006-10-10 09:20:54 UTC

  FreeBSD src repository

  Modified files:
    sys/ufs/ffs          ffs_inode.c ffs_snapshot.c ffs_vnops.c 
    sys/ufs/ufs          inode.h ufs_vnops.c 
  Log:
  Do not translate the IN_ACCESS inode flag into the IN_MODIFIED while filesystem
  is suspending/suspended. Doing so may result in deadlock. Instead, set the
  (new) IN_LAZYACCESS flag, that becomes IN_MODIFIED when suspend is lifted.
  
  Change the locking protocol in order to set the IN_ACCESS and timestamps
  without upgrading shared vnode lock to exclusive (see comments in the
  inode.h). Before that, inode was modified while holding only shared
  lock.
  
  Tested by:      Peter Holm
  Reviewed by:    tegge, bde
  Approved by:    pjd (mentor)
  MFC after:      3 weeks
  
  Revision  Changes    Path
  1.107     +7 -5      src/sys/ufs/ffs/ffs_inode.c
  1.131     +18 -6     src/sys/ufs/ffs/ffs_snapshot.c
  1.161     +8 -2      src/sys/ufs/ffs/ffs_vnops.c
  1.51      +9 -0      src/sys/ufs/ufs/inode.h
  1.280     +47 -21    src/sys/ufs/ufs/ufs_vnops.c