a056cc8934
There are two places here where we could race with a rename or remove: - We could find the parent, but then be removed or renamed away from that parent directory before finding our name in that directory. - We could find the parent, and find our name in that parent, but then be renamed or removed before we look ourselves up by that name in that parent. In both cases the concurrent rename or remove will take care of reconnecting the directory that we're currently examining. Our target directory should then also be connected. Check this and clear DISCONNECTED in these cases instead of looping around again. Note: we *do* need to check that this actually happened if we want to be robust in the face of corrupted filesystems: a corrupted filesystem could just return a completely wrong parent, and we want to fail with an error in that case before starting to clear DISCONNECTED on non-DISCONNECTED filesystems. Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: J. Bruce Fields <bfields@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> |
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