namei: move clearing LOOKUP_RCU towards rcu_read_unlock()

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try_to_unlazy()/try_to_unlazy_next() drop LOOKUP_RCU in the
very beginning and do rcu_read_unlock() only at the very end.
However, nothing done in between even looks at the flag in
question; might as well clear it at the same time we unlock.

Note that try_to_unlazy_next() used to call legitimize_mnt(),
which might drop/regain rcu_read_lock() in some cases.  This
is no longer true, so we really have rcu_read_lock() held
all along until the end.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

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Al Viro 2022-07-06 12:40:31 -04:00

parent 7e4745a094

commit 6e18032715

1 changed files with 12 additions and 9 deletions

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fs/namei.c

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