diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/xen/grant-table.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/drivers/xen/grant-table.c b/drivers/xen/grant-table.c index d6786b87e13b..2c6a9114d332 100644 --- a/drivers/xen/grant-table.c +++ b/drivers/xen/grant-table.c @@ -42,6 +42,7 @@ #include <linux/delay.h> #include <linux/hardirq.h> #include <linux/workqueue.h> +#include <linux/ratelimit.h> #include <xen/xen.h> #include <xen/interface/xen.h> @@ -1072,8 +1073,14 @@ static int gnttab_expand(unsigned int req_entries) cur = nr_grant_frames; extra = ((req_entries + (grefs_per_grant_frame-1)) / grefs_per_grant_frame); - if (cur + extra > gnttab_max_grant_frames()) + if (cur + extra > gnttab_max_grant_frames()) { + pr_warn_ratelimited("xen/grant-table: max_grant_frames reached" + " cur=%u extra=%u limit=%u" + " gnttab_free_count=%u req_entries=%u\n", + cur, extra, gnttab_max_grant_frames(), + gnttab_free_count, req_entries); return -ENOSPC; + } rc = gnttab_map(cur, cur + extra - 1); if (rc == 0) |