From 9e5129ba8d3d65605683050f73f12dddbf3f8c00 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Wed, 13 Nov 2013 07:45:40 -0500 Subject: [PATCH] prepend_path() needs to reinitialize dentry/vfsmount/mnt on restarts commit ede4cebce16f5643c61aedd6d88d9070a1d23a68 upstream. ... and equivalent is needed in 3.12; it's broken there as well Signed-off-by: Al Viro Reported-by: Michael Marineau Tested-by: Waiman Long Signed-off-by: Greg Kroah-Hartman --- fs/dcache.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/fs/dcache.c b/fs/dcache.c index ae6ebb8..89f9671 100644 --- a/fs/dcache.c +++ b/fs/dcache.c @@ -2881,9 +2881,9 @@ static int prepend_path(const struct path *path, const struct path *root, char **buffer, int *buflen) { - struct dentry *dentry = path->dentry; - struct vfsmount *vfsmnt = path->mnt; - struct mount *mnt = real_mount(vfsmnt); + struct dentry *dentry; + struct vfsmount *vfsmnt; + struct mount *mnt; int error = 0; unsigned seq = 0; char *bptr; @@ -2893,6 +2893,9 @@ static int prepend_path(const struct path *path, restart: bptr = *buffer; blen = *buflen; + dentry = path->dentry; + vfsmnt = path->mnt; + mnt = real_mount(vfsmnt); read_seqbegin_or_lock(&rename_lock, &seq); while (dentry != root->dentry || vfsmnt != root->mnt) { struct dentry * parent; -- 2.7.4