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From: Souptick Joarder <jrdr.linux@gmail.com>
To: jglisse@redhat.com, akpm@linux-foundation.org
Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org,
	Souptick Joarder <jrdr.linux@gmail.com>
Subject: [PATCH] mm/hmm.c : Remove additional check for lockdep_assert_held()
Date: Fri, 13 Mar 2020 07:41:00 +0530	[thread overview]
Message-ID: <1584065460-22205-1-git-send-email-jrdr.linux@gmail.com> (raw)

walk_page_range() already has a check for lockdep_assert_held().
So additional check for lockdep_assert_held() can be removed from
hmm_range_fault().

Signed-off-by: Souptick Joarder <jrdr.linux@gmail.com>
---
 mm/hmm.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/mm/hmm.c b/mm/hmm.c
index 72e5a6d..b201e1e 100644
--- a/mm/hmm.c
+++ b/mm/hmm.c
@@ -681,7 +681,6 @@ long hmm_range_fault(struct hmm_range *range, unsigned int flags)
 	struct mm_struct *mm = range->notifier->mm;
 	int ret;
 
-	lockdep_assert_held(&mm->mmap_sem);
 
 	do {
 		/* If range is no longer valid force retry. */
-- 
1.9.1


             reply	other threads:[~2020-03-13  2:03 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-03-13  2:11 Souptick Joarder [this message]
2020-03-13  2:58 ` [PATCH] mm/hmm.c : Remove additional check for lockdep_assert_held() Andrew Morton
2020-03-13  3:47   ` Souptick Joarder
2020-03-13  3:57     ` Andrew Morton
2020-03-13  4:22       ` Souptick Joarder
2020-03-13 12:22 ` Jason Gunthorpe
2020-03-22 15:16   ` Souptick Joarder

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