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Merge branch 'work.namei' of git://git./linux/kernel/git/viro/vfs
Pull vfs namei updates from Al Viro:
- make lookup_one_len() safe with parent locked only shared(incoming
afs series wants that)
- fix of getname_kernel() regression from 2015 (-stable fodder, that
one).
* 'work.namei' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
getname_kernel() needs to make sure that ->name != ->iname in long case
make lookup_one_len() safe to use with directory locked shared
new helper: __lookup_slow()
merge common parts of lookup_one_len{,_unlocked} into common helper