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H A D | namei.c | 165200d6 Fri Feb 28 09:17:52 CST 2020 Al Viro <viro@zeniv.linux.org.uk> follow_dotdot(): be lazy about changing nd->path
Change nd->path only after the loop is done and only in case we hadn't ended up finding ourselves in root. Same for NO_XDEV check.
That separates the "check how far back do we need to go through the mount stack" logics from the rest of .. traversal.
NOTE: path_get/path_put introduced here are temporary. They will go away later in the series.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> 165200d6 Fri Feb 28 09:17:52 CST 2020 Al Viro <viro@zeniv.linux.org.uk> follow_dotdot(): be lazy about changing nd->path Change nd->path only after the loop is done and only in case we hadn't ended up finding ourselves in root. Same for NO_XDEV check. That separates the "check how far back do we need to go through the mount stack" logics from the rest of .. traversal. NOTE: path_get/path_put introduced here are temporary. They will go away later in the series. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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