cifs: get rid of ->f_path.dentry->d_sb uses, add a new helper

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

4 files changed, 16 insertions, 11 deletions

diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c
index 9d7996e8e793..d72fe37f5420 100644
--- a/fs/cifs/cifsfs.c
+++ b/fs/cifs/cifsfs.c
@@ -209,8 +209,7 @@ cifs_statfs(struct dentry *dentry, struct kstatfs *buf)
 
 static long cifs_fallocate(struct file *file, int mode, loff_t off, loff_t len)
 {
-        struct super_block *sb = file->f_path.dentry->d_sb;
-        struct cifs_sb_info *cifs_sb = CIFS_SB(sb);
+        struct cifs_sb_info *cifs_sb = CIFS_FILE_SB(file);
         struct cifs_tcon *tcon = cifs_sb_master_tcon(cifs_sb);
         struct TCP_Server_Info *server = tcon->ses->server;
 
diff --git a/fs/cifs/cifsglob.h b/fs/cifs/cifsglob.h
index 02a33e529904..6e139111fdb2 100644
--- a/fs/cifs/cifsglob.h
+++ b/fs/cifs/cifsglob.h
@@ -1168,6 +1168,12 @@ CIFS_SB(struct super_block *sb)
         return sb->s_fs_info;
 }
 
+static inline struct cifs_sb_info *
+CIFS_FILE_SB(struct file *file)
+{
+        return CIFS_SB(file_inode(file)->i_sb);
+}
+
 static inline char CIFS_DIR_SEP(const struct cifs_sb_info *cifs_sb)
 {
         if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIX_PATHS)
diff --git a/fs/cifs/file.c b/fs/cifs/file.c
index 3e4d00a06c44..d535e168a9d3 100644
--- a/fs/cifs/file.c
+++ b/fs/cifs/file.c
@@ -1586,7 +1586,7 @@ int cifs_lock(struct file *file, int cmd, struct file_lock *flock)
         cifs_read_flock(flock, &type, &lock, &unlock, &wait_flag,
                         tcon->ses->server);
 
-        cifs_sb = CIFS_SB(file->f_path.dentry->d_sb);
+        cifs_sb = CIFS_FILE_SB(file);
         netfid = cfile->fid.netfid;
         cinode = CIFS_I(file_inode(file));
 
@@ -2305,7 +2305,7 @@ int cifs_fsync(struct file *file, loff_t start, loff_t end, int datasync)
         struct cifs_tcon *tcon;
         struct TCP_Server_Info *server;
         struct cifsFileInfo *smbfile = file->private_data;
-        struct cifs_sb_info *cifs_sb = CIFS_SB(file->f_path.dentry->d_sb);
+        struct cifs_sb_info *cifs_sb = CIFS_FILE_SB(file);
         struct inode *inode = file->f_mapping->host;
 
         rc = filemap_write_and_wait_range(inode->i_mapping, start, end);
@@ -2585,7 +2585,7 @@ cifs_iovec_write(struct file *file, struct iov_iter *from, loff_t *poffset)
         iov_iter_truncate(from, len);
 
         INIT_LIST_HEAD(&wdata_list);
-        cifs_sb = CIFS_SB(file->f_path.dentry->d_sb);
+        cifs_sb = CIFS_FILE_SB(file);
         open_file = file->private_data;
         tcon = tlink_tcon(open_file->tlink);
 
@@ -3010,7 +3010,7 @@ ssize_t cifs_user_readv(struct kiocb *iocb, struct iov_iter *to)
                 return 0;
 
         INIT_LIST_HEAD(&rdata_list);
-        cifs_sb = CIFS_SB(file->f_path.dentry->d_sb);
+        cifs_sb = CIFS_FILE_SB(file);
         open_file = file->private_data;
         tcon = tlink_tcon(open_file->tlink);
 
@@ -3155,7 +3155,7 @@ cifs_read(struct file *file, char *read_data, size_t read_size, loff_t *offset)
         __u32 pid;
 
         xid = get_xid();
-        cifs_sb = CIFS_SB(file->f_path.dentry->d_sb);
+        cifs_sb = CIFS_FILE_SB(file);
 
         /* FIXME: set up handlers for larger reads and/or convert to async */
         rsize = min_t(unsigned int, cifs_sb->rsize, CIFSMaxBufSize);
@@ -3462,7 +3462,7 @@ static int cifs_readpages(struct file *file, struct address_space *mapping,
         int rc;
         struct list_head tmplist;
         struct cifsFileInfo *open_file = file->private_data;
-        struct cifs_sb_info *cifs_sb = CIFS_SB(file->f_path.dentry->d_sb);
+        struct cifs_sb_info *cifs_sb = CIFS_FILE_SB(file);
         struct TCP_Server_Info *server;
         pid_t pid;
 
diff --git a/fs/cifs/readdir.c b/fs/cifs/readdir.c
index 586e3d3b204e..d19f1996a6ea 100644
--- a/fs/cifs/readdir.c
+++ b/fs/cifs/readdir.c
@@ -261,7 +261,7 @@ initiate_cifs_search(const unsigned int xid, struct file *file)
         int rc = 0;
         char *full_path = NULL;
         struct cifsFileInfo *cifsFile;
-        struct cifs_sb_info *cifs_sb = CIFS_SB(file->f_path.dentry->d_sb);
+        struct cifs_sb_info *cifs_sb = CIFS_FILE_SB(file);
         struct tcon_link *tlink = NULL;
         struct cifs_tcon *tcon;
         struct TCP_Server_Info *server;
@@ -561,7 +561,7 @@ find_cifs_entry(const unsigned int xid, struct cifs_tcon *tcon, loff_t pos,
         loff_t first_entry_in_buffer;
         loff_t index_to_find = pos;
         struct cifsFileInfo *cfile = file->private_data;
-        struct cifs_sb_info *cifs_sb = CIFS_SB(file->f_path.dentry->d_sb);
+        struct cifs_sb_info *cifs_sb = CIFS_FILE_SB(file);
         struct TCP_Server_Info *server = tcon->ses->server;
         /* check if index in the buffer */
 
@@ -679,7 +679,7 @@ static int cifs_filldir(char *find_entry, struct file *file,
                 char *scratch_buf, unsigned int max_len)
 {
         struct cifsFileInfo *file_info = file->private_data;
-        struct super_block *sb = file->f_path.dentry->d_sb;
+        struct super_block *sb = file_inode(file)->i_sb;
         struct cifs_sb_info *cifs_sb = CIFS_SB(sb);
         struct cifs_dirent de = { NULL, };
         struct cifs_fattr fattr;