The commit is pushed to "branch-rh7-3.10.0-327.3.1-vz7.10.x-ovz" and will
appear at https://src.openvz.org/scm/ovz/vzkernel.git
after rh7-3.10.0-327.3.1.vz7.10.3
------>
commit a858babe75ddb0fb39698b4f2fc8e052fdab0073
Author: Evgenii Shatokhin <[email protected]>
Date: Sat Jan 23 15:59:34 2016 +0400
ve/fs: Print a message if a VE reaches its limit on mounts
This should help debugging the situations when alloc_vfsmnt() fails.
Rate-limiting is used to avoid the flood of such messages if the mount
limit is hit often.
v2: Print the name of the VE rather than its address.
Suggested in https://jira.sw.ru/browse/PSBM-42825
Signed-off-by: Evgenii Shatokhin <[email protected]>
---
fs/namespace.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/fs/namespace.c b/fs/namespace.c
index c66fa10..62a12b7 100644
--- a/fs/namespace.c
+++ b/fs/namespace.c
@@ -167,8 +167,12 @@ static struct mount *alloc_vfsmnt(const char *name)
{
struct mount *mnt;
- if (!ve_mount_allowed())
+ if (!ve_mount_allowed()) {
+ pr_warn_ratelimited(
+ "CT#%s reached the limit on mounts.\n",
+ ve_name(get_exec_env()));
return NULL;
+ }
mnt = kmem_cache_zalloc(mnt_cache, GFP_KERNEL);
if (mnt) {
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