Al Viro bcba1e7d0d take LOOKUP_{ROOT,ROOT_GRABBED,JUMPED} out of LOOKUP_... space
Separate field in nameidata (nd->state) holding the flags that
should be internal-only - that way we both get some spare bits
in LOOKUP_... and get simpler rules for nd->root lifetime rules,
since we can set the replacement of LOOKUP_ROOT (ND_ROOT_PRESET)
at the same time we set nd->root.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2021-04-07 13:57:13 -04:00
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