1 files changed, 17 insertions, 21 deletions

diff --git a/fs/cachefiles/daemon.c b/fs/cachefiles/daemon.c
index c2413561ea75..727caedcdd92 100644
--- a/fs/cachefiles/daemon.c
+++ b/fs/cachefiles/daemon.c
@@ -552,8 +552,7 @@ static int cachefiles_daemon_tag(struct cachefiles_cache *cache, char *args)
  */
 static int cachefiles_daemon_cull(struct cachefiles_cache *cache, char *args)
 {
-        struct fs_struct *fs;
-        struct dentry *dir;
+        struct path path;
         const struct cred *saved_cred;
         int ret;
 
@@ -573,24 +572,21 @@ static int cachefiles_daemon_cull(struct cachefiles_cache *cache, char *args)
         }
 
         /* extract the directory dentry from the cwd */
-        fs = current->fs;
-        read_lock(&fs->lock);
-        dir = dget(fs->pwd.dentry);
-        read_unlock(&fs->lock);
+        get_fs_pwd(current->fs, &path);
 
-        if (!S_ISDIR(dir->d_inode->i_mode))
+        if (!S_ISDIR(path.dentry->d_inode->i_mode))
                 goto notdir;
 
         cachefiles_begin_secure(cache, &saved_cred);
-        ret = cachefiles_cull(cache, dir, args);
+        ret = cachefiles_cull(cache, path.dentry, args);
         cachefiles_end_secure(cache, saved_cred);
 
-        dput(dir);
+        path_put(&path);
         _leave(" = %d", ret);
         return ret;
 
 notdir:
-        dput(dir);
+        path_put(&path);
         kerror("cull command requires dirfd to be a directory");
         return -ENOTDIR;
 
@@ -628,8 +624,7 @@ inval:
  */
 static int cachefiles_daemon_inuse(struct cachefiles_cache *cache, char *args)
 {
-        struct fs_struct *fs;
-        struct dentry *dir;
+        struct path path;
         const struct cred *saved_cred;
         int ret;
 
@@ -649,24 +644,21 @@ static int cachefiles_daemon_inuse(struct cachefiles_cache *cache, char *args)
         }
 
         /* extract the directory dentry from the cwd */
-        fs = current->fs;
-        read_lock(&fs->lock);
-        dir = dget(fs->pwd.dentry);
-        read_unlock(&fs->lock);
+        get_fs_pwd(current->fs, &path);
 
-        if (!S_ISDIR(dir->d_inode->i_mode))
+        if (!S_ISDIR(path.dentry->d_inode->i_mode))
                 goto notdir;
 
         cachefiles_begin_secure(cache, &saved_cred);
-        ret = cachefiles_check_in_use(cache, dir, args);
+        ret = cachefiles_check_in_use(cache, path.dentry, args);
         cachefiles_end_secure(cache, saved_cred);
 
-        dput(dir);
+        path_put(&path);
         //_leave(" = %d", ret);
         return ret;
 
 notdir:
-        dput(dir);
+        path_put(&path);
         kerror("inuse command requires dirfd to be a directory");
         return -ENOTDIR;
 
@@ -683,6 +675,10 @@ int cachefiles_has_space(struct cachefiles_cache *cache,
                          unsigned fnr, unsigned bnr)
 {
         struct kstatfs stats;
+        struct path path = {
+                .mnt    = cache->mnt,
+                .dentry = cache->mnt->mnt_root,
+        };
         int ret;
 
         //_enter("{%llu,%llu,%llu,%llu,%llu,%llu},%u,%u",
@@ -697,7 +693,7 @@ int cachefiles_has_space(struct cachefiles_cache *cache,
         /* find out how many pages of blockdev are available */
         memset(&stats, 0, sizeof(stats));
 
-        ret = vfs_statfs(cache->mnt->mnt_root, &stats);
+        ret = vfs_statfs(&path, &stats);
         if (ret < 0) {
                 if (ret == -EIO)
                         cachefiles_io_error(cache, "statfs failed");