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| author | Al Viro <viro@zeniv.linux.org.uk> | 2012-03-30 20:18:50 +0200 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2012-03-31 22:03:16 +0200 |
| commit | 08b0ab7c20f767187ae635d51bdd9d262ebe8357 (patch) | |
| tree | b3b7258f1bee1574df231279dec23fe0c92a2b46 /README | |
| parent | untangling do_lookup() - eliminate a loop. (diff) | |
| download | linux-08b0ab7c20f767187ae635d51bdd9d262ebe8357.tar.xz linux-08b0ab7c20f767187ae635d51bdd9d262ebe8357.zip | |
untangling do_lookup() - get rid of need_reval in !dentry case
Everything arriving into if (!dentry) will have need_reval = 1.
Indeed, the only way to get there with need_reval reset to 0 would
be via
if (unlikely(d_need_lookup(dentry)))
goto unlazy;
if (unlikely(dentry->d_flags & DCACHE_OP_REVALIDATE)) {
status = d_revalidate(dentry, nd);
if (unlikely(status <= 0)) {
if (status != -ECHILD)
need_reval = 0;
goto unlazy;
...
unlazy:
/* no assignments to dentry */
if (dentry && unlikely(d_need_lookup(dentry))) {
dput(dentry);
dentry = NULL;
}
and if d_need_lookup() had already been false the first time around, it
will remain false on the second call as well.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'README')
0 files changed, 0 insertions, 0 deletions