From: Melissa Howland <[email protected]>
[S390] monwriter buffer limit.
Make max_bufs a global (per linux guest) limit.
Signed-off-by: Melissa Howland <[email protected]>
Signed-off-by: Martin Schwidefsky <[email protected]>
---
drivers/s390/char/monwriter.c | 10 +++++-----
1 files changed, 5 insertions(+), 5 deletions(-)
diff -urpN linux-2.6/drivers/s390/char/monwriter.c linux-2.6-patched/drivers/s390/char/monwriter.c
--- linux-2.6/drivers/s390/char/monwriter.c 2006-10-06 16:29:35.000000000 +0200
+++ linux-2.6-patched/drivers/s390/char/monwriter.c 2006-10-06 16:29:55.000000000 +0200
@@ -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_p
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_p
}
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 *
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);