From: Davidlohr Bueso <dave@stgolabs.net>
Date: Wed, 5 Dec 2018 00:14:26 +0000 (+1100)
Subject: mm/: remove caller signal_pending branch predictions
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=f111935198976857a9c77170ae283fd21a587bea;p=users%2Fwilly%2Flinux.git

mm/: remove caller signal_pending branch predictions

This is already done for us internally by the signal machinery.

Link: http://lkml.kernel.org/r/20181116002713.8474-5-dave@stgolabs.net
Signed-off-by: Davidlohr Bueso <dave@stgolabs.net>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
---

diff --git a/mm/filemap.c b/mm/filemap.c
index d2df272152f5..b1165a311a1f 100644
--- a/mm/filemap.c
+++ b/mm/filemap.c
@@ -1125,7 +1125,7 @@ static inline int wait_on_page_bit_common(wait_queue_head_t *q,
 				break;
 		}
 
-		if (unlikely(signal_pending_state(state, current))) {
+		if (signal_pending_state(state, current)) {
 			ret = -EINTR;
 			break;
 		}
diff --git a/mm/gup.c b/mm/gup.c
index 8cb68a50dbdf..6dd33e16a806 100644
--- a/mm/gup.c
+++ b/mm/gup.c
@@ -727,7 +727,7 @@ retry:
 		 * If we have a pending SIGKILL, don't keep faulting pages and
 		 * potentially allocating memory.
 		 */
-		if (unlikely(fatal_signal_pending(current))) {
+		if (fatal_signal_pending(current)) {
 			ret = -ERESTARTSYS;
 			goto out;
 		}
diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index 252e81e1f86e..1ac3533e8a95 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -4244,7 +4244,7 @@ long follow_hugetlb_page(struct mm_struct *mm, struct vm_area_struct *vma,
 		 * If we have a pending SIGKILL, don't keep faulting pages and
 		 * potentially allocating memory.
 		 */
-		if (unlikely(fatal_signal_pending(current))) {
+		if (fatal_signal_pending(current)) {
 			remainder = 0;
 			break;
 		}