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authorTao Chen <boby.chen@huawei.com>2015-03-27 13:15:54 +0000
committerKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>2015-04-07 10:32:42 -0400
commit1375590d3e18b4d87d2f768178e93a0c8644a7dc (patch)
treed32405daeee72d703e42f906c9805808039dcd3f /drivers/block
parentde9ad6d4edb63e0ba5d5aae365fb3565064fc00d (diff)
xen-blkback: enlarge the array size of blkback name
The blkback name is like blkback.domid.xvd[a-z], if domid has four digits (means larger than 1000), then the backmost xvd wouldn't be fully shown. Define a BLKBACK_NAME_LEN macro to be 20, enlarge the array size of blkback name, so it will be fully shown in any case. Signed-off-by: Tao Chen <boby.chen@huawei.com> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Acked-by: Roger Pau Monné <roger.pau@citrix.com>
Diffstat (limited to 'drivers/block')
-rw-r--r--drivers/block/xen-blkback/xenbus.c7
1 files changed, 5 insertions, 2 deletions
diff --git a/drivers/block/xen-blkback/xenbus.c b/drivers/block/xen-blkback/xenbus.c
index e3afe97280b1..b33083e67f8c 100644
--- a/drivers/block/xen-blkback/xenbus.c
+++ b/drivers/block/xen-blkback/xenbus.c
@@ -21,6 +21,9 @@
#include <xen/grant_table.h>
#include "common.h"
+/* Enlarge the array size in order to fully show blkback name. */
+#define BLKBACK_NAME_LEN (20)
+
struct backend_info {
struct xenbus_device *dev;
struct xen_blkif *blkif;
@@ -70,7 +73,7 @@ static int blkback_name(struct xen_blkif *blkif, char *buf)
else
devname = devpath;
- snprintf(buf, TASK_COMM_LEN, "blkback.%d.%s", blkif->domid, devname);
+ snprintf(buf, BLKBACK_NAME_LEN, "blkback.%d.%s", blkif->domid, devname);
kfree(devpath);
return 0;
@@ -79,7 +82,7 @@ static int blkback_name(struct xen_blkif *blkif, char *buf)
static void xen_update_blkif_status(struct xen_blkif *blkif)
{
int err;
- char name[TASK_COMM_LEN];
+ char name[BLKBACK_NAME_LEN];
/* Not ready to connect? */
if (!blkif->irq || !blkif->vbd.bdev)