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Commit ede4cebc authored by Al Viro's avatar Al Viro
Browse files

prepend_path() needs to reinitialize dentry/vfsmount/mnt on restarts 



... and equivalent is needed in 3.12; it's broken there as well

Signed-off-by: default avatarAl Viro <viro@zeniv.linux.org.uk>
parent 4ec6c2ae

fs/dcache.c

+6 −3
Original line number Diff line number Diff line
@@ -2912,9 +2912,9 @@ 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, m_seq = 0;

	char *bptr;
@@ -2929,6 +2929,9 @@ static int prepend_path(const struct path *path, 
	bptr = *buffer;

	blen = *buflen;

	error = 0;

	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;