Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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Merge tag 'pull-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull mount fixes from Al Viro:
"Several mount-related fixes"
* tag 'pull-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
userns and mnt_idmap leak in open_tree_attr(2)
attach_recursive_mnt(): do not lock the covering tree when sliding something under it
replace collect_mounts()/drop_collected_mounts() with a safer variant
c5c2a8b497