[pkgsrc/trunk]: pkgsrc/sysutils/lsof/files lsof: don't need to keep track of ...

[tnn <tnn%pkgsrc.org@localhost>]

details:   https://anonhg.NetBSD.org/pkgsrc/rev/39d86de77b99
branches:  trunk
changeset: 379919:39d86de77b99
user:      tnn <tnn%pkgsrc.org@localhost>
date:      Wed May 25 10:02:27 2022 +0000

description:
lsof: don't need to keep track of the parent vnode kva, save some RAM

diffstat:

 sysutils/lsof/files/rnmt.c |  16 +++++++---------
 1 files changed, 7 insertions(+), 9 deletions(-)

diffs (66 lines):

diff -r a22fa0ffd762 -r 39d86de77b99 sysutils/lsof/files/rnmt.c
--- a/sysutils/lsof/files/rnmt.c        Wed May 25 09:50:03 2022 +0000
+++ b/sysutils/lsof/files/rnmt.c        Wed May 25 10:02:27 2022 +0000
@@ -35,7 +35,6 @@
 struct lnc {
        struct rb_node lnc_tree;        /* red-black tree */
        KA_T lnc_vp;                    /* vnode address */
-       KA_T lnc_pvp;                   /* parent vnode address */
        const struct lnc *lnc_plnc;     /* parent lnc address */
        int lnc_nlen;                   /* name length */
        char lnc_name[NCHNAMLEN + 1];   /* name */
@@ -81,7 +80,7 @@
 }
 
 static struct lnc *
-ncache_enter_local(KA_T vp, KA_T pvp, const struct lnc *plnc, const struct namecache *nc)
+ncache_enter_local(KA_T vp, const struct lnc *plnc, const struct namecache *nc)
 {
        struct lnc *lnc;
 
@@ -90,7 +89,6 @@
                errx(1, "can't allocate local name cache entry\n");
        }
        lnc->lnc_vp = vp;
-       lnc->lnc_pvp = pvp;
        lnc->lnc_plnc = plnc;
        lnc->lnc_nlen = nc->nc_nlen;
        memcpy(lnc->lnc_name, nc->nc_name, lnc->lnc_nlen);
@@ -129,7 +127,7 @@
 }
 
 static void
-ncache_walk(KA_T ncp, KA_T pvp, const struct lnc *plnc)
+ncache_walk(KA_T ncp, const struct lnc *plnc)
 {
        struct l_nch *lc;
        static struct vnode_impl vi;
@@ -148,15 +146,15 @@
        left = (KA_T)nc.nc_tree.rb_nodes[0];
        right = (KA_T)nc.nc_tree.rb_nodes[1];
        if (sanity_check_vnode_impl(&vi) == 0 && sanity_check_namecache(&nc) == 0) {
-               lnc = ncache_enter_local(vp, pvp, plnc, &nc);
+               lnc = ncache_enter_local(vp, plnc, &nc);
                if (vi.vi_vnode.v_type == VDIR && vi.vi_nc_tree.rbt_root != NULL) {
-                       ncache_walk((KA_T)vi.vi_nc_tree.rbt_root, ncp, lnc);
+                       ncache_walk((KA_T)vi.vi_nc_tree.rbt_root, lnc);
                }
        }
        if (left)
-               ncache_walk(left, pvp, plnc);
+               ncache_walk(left, plnc);
        if (right)
-               ncache_walk(right, pvp, plnc);
+               ncache_walk(right, plnc);
 }
 
 void
@@ -174,7 +172,7 @@
        }
 
        rb_tree_init(&lnc_rbtree, &lnc_rbtree_ops);
-       ncache_walk((KA_T)vi.vi_nc_tree.rbt_root, 0, 0);
+       ncache_walk((KA_T)vi.vi_nc_tree.rbt_root, 0);
 }
 
 static void