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CVS commit: src/sys

Module Name:    src
Committed By:   dholland
Date:           Mon Nov  5 17:24:12 UTC 2012

Modified Files:
        src/sys/fs/adosfs: adlookup.c
        src/sys/fs/cd9660: cd9660_lookup.c
        src/sys/fs/efs: efs_vnops.c
        src/sys/fs/filecorefs: filecore_lookup.c
        src/sys/fs/msdosfs: msdosfs_lookup.c
        src/sys/fs/nilfs: nilfs_vnops.c
        src/sys/fs/ntfs: ntfs_vnops.c
        src/sys/fs/puffs: puffs_vnops.c
        src/sys/fs/smbfs: smbfs_vnops.c
        src/sys/fs/tmpfs: tmpfs_vnops.c
        src/sys/fs/udf: udf_vnops.c
        src/sys/fs/union: union.h union_subr.c
        src/sys/kern: vfs_cache.c vfs_getcwd.c vfs_lookup.c
        src/sys/nfs: nfs_vnops.c
        src/sys/rump/librump/rumpvfs: rump_vfs.c
        src/sys/sys: namei.src
        src/sys/ufs/chfs: chfs_vnops.c
        src/sys/ufs/ext2fs: ext2fs_lookup.c
        src/sys/ufs/ufs: ufs_lookup.c

Log Message:
Disentangle the namecache from the internals of namei.

 - Move the namecache's hash computation to inside the namecache code,
instead of being spread out all over the place. Remove cn_hash from
struct componentname and delete all uses of it.

 - It is no longer necessary (if it ever was) for cache_lookup and
cache_lookup_raw to clear MAKEENTRY from cnp->cn_flags for the cases
that cache_enter already checks for.

 - Rearrange the interface of cache_lookup (and cache_lookup_raw) to
make it somewhat simpler, to exclude certain nonexistent error
conditions, and (most importantly) to make it not require write access
to cnp->cn_flags.

This change requires a kernel bump.

To generate a diff of this commit:
cvs rdiff -u -r1.16 -r1.17 src/sys/fs/adosfs/adlookup.c
cvs rdiff -u -r1.20 -r1.21 src/sys/fs/cd9660/cd9660_lookup.c
cvs rdiff -u -r1.26 -r1.27 src/sys/fs/efs/efs_vnops.c
cvs rdiff -u -r1.14 -r1.15 src/sys/fs/filecorefs/filecore_lookup.c
cvs rdiff -u -r1.24 -r1.25 src/sys/fs/msdosfs/msdosfs_lookup.c
cvs rdiff -u -r1.18 -r1.19 src/sys/fs/nilfs/nilfs_vnops.c
cvs rdiff -u -r1.52 -r1.53 src/sys/fs/ntfs/ntfs_vnops.c
cvs rdiff -u -r1.174 -r1.175 src/sys/fs/puffs/puffs_vnops.c
cvs rdiff -u -r1.80 -r1.81 src/sys/fs/smbfs/smbfs_vnops.c
cvs rdiff -u -r1.98 -r1.99 src/sys/fs/tmpfs/tmpfs_vnops.c
cvs rdiff -u -r1.72 -r1.73 src/sys/fs/udf/udf_vnops.c
cvs rdiff -u -r1.23 -r1.24 src/sys/fs/union/union.h
cvs rdiff -u -r1.55 -r1.56 src/sys/fs/union/union_subr.c
cvs rdiff -u -r1.89 -r1.90 src/sys/kern/vfs_cache.c
cvs rdiff -u -r1.47 -r1.48 src/sys/kern/vfs_getcwd.c
cvs rdiff -u -r1.196 -r1.197 src/sys/kern/vfs_lookup.c
cvs rdiff -u -r1.295 -r1.296 src/sys/nfs/nfs_vnops.c
cvs rdiff -u -r1.67 -r1.68 src/sys/rump/librump/rumpvfs/rump_vfs.c
cvs rdiff -u -r1.27 -r1.28 src/sys/sys/namei.src
cvs rdiff -u -r1.11 -r1.12 src/sys/ufs/chfs/chfs_vnops.c
cvs rdiff -u -r1.70 -r1.71 src/sys/ufs/ext2fs/ext2fs_lookup.c
cvs rdiff -u -r1.118 -r1.119 src/sys/ufs/ufs/ufs_lookup.c

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

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