From: Casey Schaufler <[email protected]> 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 <[email protected]> --- 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
