Hi. Please backport upstream commit b911a6bdeef5848c468597d040e3407e0aee04ce to 3.0 and 3.4. This patch has already been backported to 3.2, 3.5, and 3.7.
The upstream patch will not build with 3.4 and 3.0 because it needs QSTR_INIT. Please use or backport similarly as commit 150086ca6bd7493e7753f923a3f55e73701253b3 from linux-3.2.y, which was the upstream commit backported by Ben Hutchings. commit b911a6bdeef5848c468597d040e3407e0aee04ce Author: NeilBrown <[email protected]> Date: Thu Nov 8 16:09:37 2012 -0800 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 <[email protected]> Cc: Trond Myklebust <[email protected]> Cc: Al Viro <[email protected]> Cc: <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Al Viro <[email protected]> Cheers, Vinson -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
