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-rw-r--r--fs/proc/base.c22
1 files changed, 11 insertions, 11 deletions
diff --git a/fs/proc/base.c b/fs/proc/base.c
index c806dfb24e08..4cf5abf77ddf 100644
--- a/fs/proc/base.c
+++ b/fs/proc/base.c
@@ -149,18 +149,13 @@ static unsigned int pid_entry_count_dirs(const struct pid_entry *entries,
149 return count; 149 return count;
150} 150}
151 151
152static int get_fs_path(struct task_struct *task, struct path *path, bool root) 152static int get_task_root(struct task_struct *task, struct path *root)
153{ 153{
154 struct fs_struct *fs;
155 int result = -ENOENT; 154 int result = -ENOENT;
156 155
157 task_lock(task); 156 task_lock(task);
158 fs = task->fs; 157 if (task->fs) {
159 if (fs) { 158 get_fs_root(task->fs, root);
160 read_lock(&fs->lock);
161 *path = root ? fs->root : fs->pwd;
162 path_get(path);
163 read_unlock(&fs->lock);
164 result = 0; 159 result = 0;
165 } 160 }
166 task_unlock(task); 161 task_unlock(task);
@@ -173,7 +168,12 @@ static int proc_cwd_link(struct inode *inode, struct path *path)
173 int result = -ENOENT; 168 int result = -ENOENT;
174 169
175 if (task) { 170 if (task) {
176 result = get_fs_path(task, path, 0); 171 task_lock(task);
172 if (task->fs) {
173 get_fs_pwd(task->fs, path);
174 result = 0;
175 }
176 task_unlock(task);
177 put_task_struct(task); 177 put_task_struct(task);
178 } 178 }
179 return result; 179 return result;
@@ -185,7 +185,7 @@ static int proc_root_link(struct inode *inode, struct path *path)
185 int result = -ENOENT; 185 int result = -ENOENT;
186 186
187 if (task) { 187 if (task) {
188 result = get_fs_path(task, path, 1); 188 result = get_task_root(task, path);
189 put_task_struct(task); 189 put_task_struct(task);
190 } 190 }
191 return result; 191 return result;
@@ -597,7 +597,7 @@ static int mounts_open_common(struct inode *inode, struct file *file,
597 get_mnt_ns(ns); 597 get_mnt_ns(ns);
598 } 598 }
599 rcu_read_unlock(); 599 rcu_read_unlock();
600 if (ns && get_fs_path(task, &root, 1) == 0) 600 if (ns && get_task_root(task, &root) == 0)
601 ret = 0; 601 ret = 0;
602 put_task_struct(task); 602 put_task_struct(task);
603 } 603 }