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[PATCH] fix d_absolute_path() interplay with fsmount()

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stuff in anon namespace should be treated as unattached.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2019-08-30 19:31:09 -04:00
parent 5f9e832c13
commit f2683bd8d5
1 changed files with 4 additions and 2 deletions
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6
fs/d_path.c
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@ -116,8 +116,10 @@ static int prepend_path(const struct path *path,
vfsmnt = &mnt->mnt; vfsmnt = &mnt->mnt;
continue; continue;
} }
if (!error) if (is_mounted(vfsmnt) && !is_anon_ns(mnt->mnt_ns))
error = is_mounted(vfsmnt) ? 1 : 2; error = 1; // absolute root
else
error = 2; // detached or not attached yet
break; break;
} }
parent = dentry->d_parent; parent = dentry->d_parent;