[S390] monwriter buffer limit.

Make max_bufs a global (per linux guest) limit.

Signed-off-by: Melissa Howland <melissah@us.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

1 files changed, 5 insertions, 5 deletions

diff --git a/drivers/s390/char/monwriter.c b/drivers/s390/char/monwriter.c
index 1e3939aeb8ab..4362ff260244 100644
--- a/drivers/s390/char/monwriter.c
+++ b/drivers/s390/char/monwriter.c
@@ -26,6 +26,7 @@
 #define MONWRITE_MAX_DATALEN    4024
 
 static int mon_max_bufs = 255;
+static int mon_buf_count;
 
 struct mon_buf {
         struct list_head list;
@@ -40,7 +41,6 @@ struct mon_private {
         size_t hdr_to_read;
         size_t data_to_read;
         struct mon_buf *current_buf;
-        int mon_buf_count;
 };
 
 /*
@@ -99,13 +99,13 @@ static int monwrite_new_hdr(struct mon_private *monpriv)
                         rc = monwrite_diag(monhdr, monbuf->data,
                                            APPLDATA_STOP_REC);
                         list_del(&monbuf->list);
-                        monpriv->mon_buf_count--;
+                        mon_buf_count--;
                         kfree(monbuf->data);
                         kfree(monbuf);
                         monbuf = NULL;
                 }
         } else {
-                if (monpriv->mon_buf_count >= mon_max_bufs)
+                if (mon_buf_count >= mon_max_bufs)
                         return -ENOSPC;
                 monbuf = kzalloc(sizeof(struct mon_buf), GFP_KERNEL);
                 if (!monbuf)
@@ -118,7 +118,7 @@ static int monwrite_new_hdr(struct mon_private *monpriv)
                 }
                 monbuf->hdr = *monhdr;
                 list_add_tail(&monbuf->list, &monpriv->list);
-                monpriv->mon_buf_count++;
+                mon_buf_count++;
         }
         monpriv->current_buf = monbuf;
         return 0;
@@ -186,7 +186,7 @@ static int monwrite_close(struct inode *inode, struct file *filp)
                 if (entry->hdr.mon_function != MONWRITE_GEN_EVENT)
                         monwrite_diag(&entry->hdr, entry->data,
                                       APPLDATA_STOP_REC);
-                monpriv->mon_buf_count--;
+                mon_buf_count--;
                 list_del(&entry->list);
                 kfree(entry->data);
                 kfree(entry);