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Chunwei Chen
987014903f
Currently, doing things like fsetxattr(2) on an unlinked file will result in ENODATA. There's two places that cause this: zfs_dirent_lock and zfs_zget. The fix in zfs_dirent_lock is pretty straightforward. In zfs_zget though, we need it to not return error when the zp is unlinked. This is a pretty big change in behavior, but skimming through all the callers, I don't think this change would cause any problem. Also there's nothing preventing z_unlinked from being set after the z_lock mutex is dropped before but before zfs_zget returns anyway. The rest of the stuff is to make sure we don't log xattr stuff when owner is unlinked. Signed-off-by: Chunwei Chen <david.chen@osnexus.com>