PR/38135 CVS commit: src/sys

[Andrew Doran <ad%netbsd.org@localhost>]

The following reply was made to PR kern/38135; it has been noted by GNATS.

From: Andrew Doran <ad%netbsd.org@localhost>
To: gnats-bugs%gnats.NetBSD.org@localhost
Cc: 
Subject: PR/38135 CVS commit: src/sys
Date: Wed, 30 Apr 2008 12:49:18 +0000 (UTC)

 Module Name:   src
 Committed By:  ad
 Date:          Wed Apr 30 12:49:18 UTC 2008
 
 Modified Files:
        src/sys/compat/common: vfs_syscalls_20.c
        src/sys/compat/netbsd32: netbsd32_compat_20.c
        src/sys/compat/osf1: osf1_mount.c
        src/sys/compat/ultrix: ultrix_fs.c
        src/sys/fs/cd9660: cd9660_vfsops.c
        src/sys/fs/filecorefs: filecore_vfsops.c
        src/sys/fs/msdosfs: msdosfs_vfsops.c
        src/sys/fs/ntfs: ntfs_vfsops.c
        src/sys/fs/puffs: puffs_msgif.c
        src/sys/fs/union: union_vnops.c
        src/sys/kern: vfs_lookup.c vfs_subr.c vfs_subr2.c vfs_syscalls.c
        src/sys/miscfs/procfs: procfs_linux.c
        src/sys/miscfs/syncfs: sync_vnops.c
        src/sys/nfs: nfs_export.c nfs_vfsops.c
        src/sys/sys: fstypes.h mount.h
        src/sys/ufs/ext2fs: ext2fs_vfsops.c
        src/sys/ufs/ffs: ffs_vfsops.c
        src/sys/ufs/lfs: lfs_bio.c lfs_syscalls.c lfs_vfsops.c
        src/sys/ufs/mfs: mfs_vfsops.c
        src/sys/ufs/ufs: ufs_vfsops.c
 
 Log Message:
 PR kern/38135 vfs_busy/vfs_trybusy confusion
 
 The previous fix worked, but it opened a window where mounts could have
 disappeared from mountlist while the caller was traversing it using
 vfs_trybusy(). Fix that.
 
 
 To generate a diff of this commit:
 cvs rdiff -r1.27 -r1.28 src/sys/compat/common/vfs_syscalls_20.c
 cvs rdiff -r1.22 -r1.23 src/sys/compat/netbsd32/netbsd32_compat_20.c
 cvs rdiff -r1.42 -r1.43 src/sys/compat/osf1/osf1_mount.c
 cvs rdiff -r1.47 -r1.48 src/sys/compat/ultrix/ultrix_fs.c
 cvs rdiff -r1.58 -r1.59 src/sys/fs/cd9660/cd9660_vfsops.c
 cvs rdiff -r1.50 -r1.51 src/sys/fs/filecorefs/filecore_vfsops.c
 cvs rdiff -r1.62 -r1.63 src/sys/fs/msdosfs/msdosfs_vfsops.c
 cvs rdiff -r1.66 -r1.67 src/sys/fs/ntfs/ntfs_vfsops.c
 cvs rdiff -r1.69 -r1.70 src/sys/fs/puffs/puffs_msgif.c
 cvs rdiff -r1.31 -r1.32 src/sys/fs/union/union_vnops.c
 cvs rdiff -r1.105 -r1.106 src/sys/kern/vfs_lookup.c
 cvs rdiff -r1.338 -r1.339 src/sys/kern/vfs_subr.c
 cvs rdiff -r1.21 -r1.22 src/sys/kern/vfs_subr2.c
 cvs rdiff -r1.353 -r1.354 src/sys/kern/vfs_syscalls.c
 cvs rdiff -r1.51 -r1.52 src/sys/miscfs/procfs/procfs_linux.c
 cvs rdiff -r1.23 -r1.24 src/sys/miscfs/syncfs/sync_vnops.c
 cvs rdiff -r1.35 -r1.36 src/sys/nfs/nfs_export.c
 cvs rdiff -r1.197 -r1.198 src/sys/nfs/nfs_vfsops.c
 cvs rdiff -r1.21 -r1.22 src/sys/sys/fstypes.h
 cvs rdiff -r1.175 -r1.176 src/sys/sys/mount.h
 cvs rdiff -r1.132 -r1.133 src/sys/ufs/ext2fs/ext2fs_vfsops.c
 cvs rdiff -r1.224 -r1.225 src/sys/ufs/ffs/ffs_vfsops.c
 cvs rdiff -r1.112 -r1.113 src/sys/ufs/lfs/lfs_bio.c
 cvs rdiff -r1.130 -r1.131 src/sys/ufs/lfs/lfs_syscalls.c
 cvs rdiff -r1.258 -r1.259 src/sys/ufs/lfs/lfs_vfsops.c
 cvs rdiff -r1.94 -r1.95 src/sys/ufs/mfs/mfs_vfsops.c
 cvs rdiff -r1.37 -r1.38 src/sys/ufs/ufs/ufs_vfsops.c
 
 Please note that diffs are not public domain; they are subject to the
 copyright notices on the relevant files.