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authorAl Viro <viro@zeniv.linux.org.uk>2017-04-15 17:31:22 -0400
committerAl Viro <viro@zeniv.linux.org.uk>2017-04-21 14:05:36 -0400
commit4f757f3cbf54edef7b75c68d6d6d2f1a0ca08d2e (patch)
treeea39abd6e1941de602264b24ee18c82f12c01c04 /fs/open.c
parent93893862fb7ba704ec5a6872a294c9cc2b0d4ca3 (diff)
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make sure that mntns_install() doesn't end up with referral for root
new flag: LOOKUP_DOWN. If the starting point is overmounted, cross into whatever's mounted on top, triggering referrals et.al. Use that instead of follow_down_one() loop in mntns_install(), handle errors properly. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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