dcache: d_splice_alias should ignore DCACHE_DISCONNECTED

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Any IS_ROOT() alias should be safe to use; there's nothing special about
DCACHE_DISCONNECTED dentries.

Note that this is in fact useful for filesystems such as btrfs which can
legimately encounter a directory with a preexisting IS_ROOT alias on a
lookup that crosses into a subvolume.  (Those aliases are currently
marked DCACHE_DISCONNECTED--but not really for any good reason, and
we'll change that soon.)

Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

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J. Bruce Fields 2014-02-17 18:03:57 -05:00 • committed by Al Viro

parent 908790fa3b

commit da093a9b76

1 changed files with 4 additions and 4 deletions

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fs/dcache.c

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