fs/ocfs2/dlm/dlmdebug.c: use seq_open_private() not seq_open()

Reduce boilerplate code by using seq_open_private() instead of seq_open()

Signed-off-by: Rob Jones <rob.jones@codethink.co.uk>
Cc: Joel Becker <jlbec@evilplan.org>
Cc: Mark Fasheh <mfasheh@suse.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 14 insertions, 25 deletions

diff --git a/fs/ocfs2/dlm/dlmdebug.c b/fs/ocfs2/dlm/dlmdebug.c
index 18f13c2e4a10..149eb556b8c6 100644
--- a/fs/ocfs2/dlm/dlmdebug.c
+++ b/fs/ocfs2/dlm/dlmdebug.c
@@ -647,41 +647,30 @@ static const struct seq_operations debug_lockres_ops = {
 static int debug_lockres_open(struct inode *inode, struct file *file)
 {
         struct dlm_ctxt *dlm = inode->i_private;
-        int ret = -ENOMEM;
-        struct seq_file *seq;
-        struct debug_lockres *dl = NULL;
+        struct debug_lockres *dl;
+        void *buf;
 
-        dl = kzalloc(sizeof(struct debug_lockres), GFP_KERNEL);
-        if (!dl) {
-                mlog_errno(ret);
+        buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
+        if (!buf)
                 goto bail;
-        }
 
-        dl->dl_len = PAGE_SIZE;
-        dl->dl_buf = kmalloc(dl->dl_len, GFP_KERNEL);
-        if (!dl->dl_buf) {
-                mlog_errno(ret);
-                goto bail;
-        }
+        dl = __seq_open_private(file, &debug_lockres_ops, sizeof(*dl));
+        if (!dl)
+                goto bailfree;
 
-        ret = seq_open(file, &debug_lockres_ops);
-        if (ret) {
-                mlog_errno(ret);
-                goto bail;
-        }
-
-        seq = file->private_data;
-        seq->private = dl;
+        dl->dl_len = PAGE_SIZE;
+        dl->dl_buf = buf;
 
         dlm_grab(dlm);
         dl->dl_ctxt = dlm;
 
         return 0;
+
+bailfree:
+        kfree(buf);
 bail:
-        if (dl)
-                kfree(dl->dl_buf);
-        kfree(dl);
-        return ret;
+        mlog_errno(-ENOMEM);
+        return -ENOMEM;
 }
 
 static int debug_lockres_release(struct inode *inode, struct file *file)