The patch titled
Subject: vfs: d_obtain_alias() needs to use "/" as default name.
has been removed from the -mm tree. Its filename was
vfs-d_obtain_alias-needs-to-use-as-default-name.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
From: NeilBrown <neilb@xxxxxxx>
Subject: vfs: d_obtain_alias() needs to use "/" as default name.
NFS appears to use d_obtain_alias() to create the root dentry rather than
d_make_root. This can cause 'prepend_path()' to complain that the root
has a weird name if an NFS filesystem is lazily unmounted. e.g. if
"/mnt" is an NFS mount then
{ cd /mnt; umount -l /mnt ; ls -l /proc/self/cwd; }
will cause a WARN message like
WARNING: at /home/git/linux/fs/dcache.c:2624 prepend_path+0x1d7/0x1e0()
...
Root dentry has weird name <>
to appear in kernel logs.
So change d_obtain_alias() to use "/" rather than "" as the anonymous
name.
Signed-off-by: NeilBrown <neilb@xxxxxxx>
Cc: Trond Myklebust <Trond.Myklebust@xxxxxxxxxx>
Cc: Al Viro <viro@xxxxxxxxxxxxxxxxxx>
Cc: <stable@xxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
fs/dcache.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff -puN fs/dcache.c~vfs-d_obtain_alias-needs-to-use-as-default-name fs/dcache.c
--- a/fs/dcache.c~vfs-d_obtain_alias-needs-to-use-as-default-name
+++ a/fs/dcache.c
@@ -1583,7 +1583,7 @@ EXPORT_SYMBOL(d_find_any_alias);
*/
struct dentry *d_obtain_alias(struct inode *inode)
{
- static const struct qstr anonstring = { .name = "" };
+ static const struct qstr anonstring = QSTR_INIT("/", 1);
struct dentry *tmp;
struct dentry *res;
_
Patches currently in -mm which might be from neilb@xxxxxxx are
origin.patch
linux-next.patch
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