From: Casey Schaufler <casey@xxxxxxxxxxxxxxxx>
Date: Thu, 10 May 2018 14:33:57 -0700
Subject: [PATCH 15/23] LSM: Mark security blob allocation failures as unlikely
The allocation of security blobs is unlikely to fail.
Mark the checks thus for performance reasons.
Signed-off-by: Casey Schaufler <casey@xxxxxxxxxxxxxxxx>
---
security/security.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/security/security.c b/security/security.c
index 359ed1137c00..412dba75da65 100644
--- a/security/security.c
+++ b/security/security.c
@@ -1245,7 +1245,7 @@ int security_file_alloc(struct file *file)
{
int rc = lsm_file_alloc(file);
- if (rc)
+ if (unlikely(rc))
return rc;
rc = call_int_hook(file_alloc_security, 0, file);
if (unlikely(rc))
@@ -1368,7 +1368,7 @@ int security_task_alloc(struct task_struct *task, unsigned long clone_flags)
{
int rc = lsm_task_alloc(task);
- if (rc)
+ if (unlikely(rc))
return rc;
rc = call_int_hook(task_alloc, 0, task, clone_flags);
if (unlikely(rc))
@@ -1388,7 +1388,7 @@ int security_cred_alloc_blank(struct cred *cred, gfp_t gfp)
{
int rc = lsm_cred_alloc(cred, gfp);
- if (rc)
+ if (unlikely(rc))
return rc;
rc = call_int_hook(cred_alloc_blank, 0, cred, gfp);
@@ -1409,7 +1409,7 @@ int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp)
{
int rc = lsm_cred_alloc(new, gfp);
- if (rc)
+ if (unlikely(rc))
return rc;
rc = call_int_hook(cred_prepare, 0, new, old, gfp);
--
2.14.3
