CVS commit: [netbsd-5-0] src/sys

[Manuel Bouyer <bouyer%netbsd.org@localhost>]

Module Name:    src
Committed By:   bouyer
Date:           Tue Sep  7 19:33:44 UTC 2010

Modified Files:
        src/sys/miscfs/genfs [netbsd-5-0]: genfs_io.c genfs_node.h
            genfs_vnops.c
        src/sys/ufs/ufs [netbsd-5-0]: ufs_inode.c
        src/sys/uvm [netbsd-5-0]: uvm_pager.h

Log Message:
Pull up following revision(s) (requested by chs in ticket #1448):
        sys/uvm/uvm_pager.h: revision 1.39 via patch
        sys/miscfs/genfs/genfs_vnops.c: revision 1.183 via patch
        sys/ufs/ufs/ufs_inode.c: revision 1.83 via patch
        sys/miscfs/genfs/genfs_io.c: revision 1.40 via patch
        sys/miscfs/genfs/genfs_node.h: revision 1.20 via patch
replace the earlier workaround for PR 40389 with a better fix.
the earlier change caused data corruption by freeing pages
without invaliding their mappings.  instead of the trylock/retry,
just take the genfs-node lock before calling VOP_GETPAGES()
and pass a new flag to tell it that we're already holding this lock.


To generate a diff of this commit:
cvs rdiff -u -r1.13.4.2 -r1.13.4.2.2.1 src/sys/miscfs/genfs/genfs_io.c
cvs rdiff -u -r1.17 -r1.17.14.1 src/sys/miscfs/genfs/genfs_node.h
cvs rdiff -u -r1.167 -r1.167.16.1 src/sys/miscfs/genfs/genfs_vnops.c
cvs rdiff -u -r1.76.4.1 -r1.76.4.1.2.1 src/sys/ufs/ufs/ufs_inode.c
cvs rdiff -u -r1.38 -r1.38.10.1 src/sys/uvm/uvm_pager.h

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.