[Devel] [PATCH RHEL7 COMMIT] debugfs: drop set_exec_ub in file create

[Konstantin Khorenko]

The commit is pushed to "branch-rh7-3.10.0-123.1.2-ovz" and will appear at https://src.openvz.org/scm/ovz/vzkernel.git
after rh7-3.10.0-123.1.2.vz7.5.12
------>
commit f1e7469789e5791c6e97457a60f9ef9cc0c1802e
Author: Vladimir Davydov <vdavydov at parallels.com>
Date:   Wed Jun 10 20:33:00 2015 +0400

    debugfs: drop set_exec_ub in file create
    
    Hell knows why it was done - I haven't managed to find the patch. I can
    only suspect that this was done to avoid charging the new dentry to
    UBC/KMEM. Now, kmem is accounted on the memcg side, so this hunk is
    needless. Remove it.
    
    Signed-off-by: Vladimir Davydov <vdavydov at parallels.com>
---
 fs/debugfs/inode.c | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/fs/debugfs/inode.c b/fs/debugfs/inode.c
index c736e20..c7c83ff 100644
--- a/fs/debugfs/inode.c
+++ b/fs/debugfs/inode.c
@@ -307,12 +307,9 @@ static struct dentry *__create_file(const char *name, umode_t mode,
 {
 	struct dentry *dentry = NULL;
 	int error;
-	struct user_beancounter *ub;
 
 	pr_debug("debugfs: creating file '%s'\n",name);
 
-	ub = set_exec_ub(get_ub0());
-
 	error = simple_pin_fs(&debug_fs_type, &debugfs_mount,
 			      &debugfs_mount_count);
 	if (error)
@@ -353,7 +350,6 @@ static struct dentry *__create_file(const char *name, umode_t mode,
 		simple_release_fs(&debugfs_mount, &debugfs_mount_count);
 	}
 exit:
-	set_exec_ub(ub);
 	return dentry;
 }