CVS commit: src/sys

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

Module Name:    src
Committed By:   ad
Date:           Sun Feb 23 22:14:04 UTC 2020

Modified Files:
        src/sys/compat/netbsd32: netbsd32_fs.c
        src/sys/kern: kern_exec.c kern_proc.c uipc_usrreq.c vfs_cwd.c
            vfs_getcwd.c vfs_lookup.c vfs_mount.c vfs_subr.c vfs_syscalls.c
            vfs_vnode.c vnode_if.sh
        src/sys/miscfs/genfs: genfs_vnops.c
        src/sys/miscfs/procfs: procfs_vnops.c
        src/sys/sys: filedesc.h vfs_syscalls.h vnode.h vnode_impl.h

Log Message:
Merge from ad-namecache:

- Have a stab at clustering the members of vnode_t and vnode_impl_t in a
  more cache-conscious way.  With that done, go back to adjusting v_usecount
  with atomics and keep vi_lock directly in vnode_impl_t (saves KVA).

- Allow VOP_LOCK(LK_NONE) for the benefit of VFS_VGET() and VFS_ROOT().
  Make sure LK_UPGRADE always comes with LK_NOWAIT.

- Make cwdinfo use mostly lockless.


To generate a diff of this commit:
cvs rdiff -u -r1.86 -r1.87 src/sys/compat/netbsd32/netbsd32_fs.c
cvs rdiff -u -r1.492 -r1.493 src/sys/kern/kern_exec.c
cvs rdiff -u -r1.241 -r1.242 src/sys/kern/kern_proc.c
cvs rdiff -u -r1.196 -r1.197 src/sys/kern/uipc_usrreq.c
cvs rdiff -u -r1.4 -r1.5 src/sys/kern/vfs_cwd.c
cvs rdiff -u -r1.54 -r1.55 src/sys/kern/vfs_getcwd.c
cvs rdiff -u -r1.213 -r1.214 src/sys/kern/vfs_lookup.c
cvs rdiff -u -r1.74 -r1.75 src/sys/kern/vfs_mount.c
cvs rdiff -u -r1.480 -r1.481 src/sys/kern/vfs_subr.c
cvs rdiff -u -r1.541 -r1.542 src/sys/kern/vfs_syscalls.c
cvs rdiff -u -r1.111 -r1.112 src/sys/kern/vfs_vnode.c
cvs rdiff -u -r1.68 -r1.69 src/sys/kern/vnode_if.sh
cvs rdiff -u -r1.201 -r1.202 src/sys/miscfs/genfs/genfs_vnops.c
cvs rdiff -u -r1.208 -r1.209 src/sys/miscfs/procfs/procfs_vnops.c
cvs rdiff -u -r1.65 -r1.66 src/sys/sys/filedesc.h
cvs rdiff -u -r1.26 -r1.27 src/sys/sys/vfs_syscalls.h
cvs rdiff -u -r1.288 -r1.289 src/sys/sys/vnode.h
cvs rdiff -u -r1.20 -r1.21 src/sys/sys/vnode_impl.h

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