From b22da3d8526a935aa31e086e63f60ff3246cb61c Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Sat, 09 Dec 2023 07:24:11 +0000
Subject: [PATCH] add stmac read mac form eeprom
---
kernel/fs/d_path.c | 11 ++++++++---
1 files changed, 8 insertions(+), 3 deletions(-)
diff --git a/kernel/fs/d_path.c b/kernel/fs/d_path.c
index e8fce6b..a69e2cd 100644
--- a/kernel/fs/d_path.c
+++ b/kernel/fs/d_path.c
@@ -102,6 +102,8 @@
if (dentry == vfsmnt->mnt_root || IS_ROOT(dentry)) {
struct mount *parent = READ_ONCE(mnt->mnt_parent);
+ struct mnt_namespace *mnt_ns;
+
/* Escaped? */
if (dentry != vfsmnt->mnt_root) {
bptr = *buffer;
@@ -116,8 +118,12 @@
vfsmnt = &mnt->mnt;
continue;
}
- if (!error)
- error = is_mounted(vfsmnt) ? 1 : 2;
+ mnt_ns = READ_ONCE(mnt->mnt_ns);
+ /* open-coded is_mounted() to use local mnt_ns */
+ if (!IS_ERR_OR_NULL(mnt_ns) && !is_anon_ns(mnt_ns))
+ error = 1; // absolute root
+ else
+ error = 2; // detached or not attached yet
break;
}
parent = dentry->d_parent;
@@ -316,7 +322,6 @@
end = ERR_PTR(-ENAMETOOLONG);
return end;
}
-EXPORT_SYMBOL(simple_dname);
/*
* Write full pathname from the root of the filesystem into the buffer.
--
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