autofs_clear_leaf_automount_flags(): use ino->count instead of ->d_subdirs

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We want to find out if the parent will become empty after we remove
the victim of rmdir().  Checking if the victim is the only element
of parent's ->d_subdirs is completely wrong - e.g. opening the parent
will end up with a cursor added to its ->d_parent and fooling the
check.

We do maintain ino->count - 0 for anything removed, 1 + number of
children for anything live.  Which gives us precisely what we need
for that check...

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

...

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Al Viro 2019-09-17 22:16:58 -04:00

parent 5f68056ca5

commit e509d6e9c1

1 changed files with 1 additions and 5 deletions

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fs/autofs/root.c

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