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Message-ID: <728dae79-5110-e3c4-df27-ce3df525aaef@google.com>
Date: Tue, 11 Jul 2023 21:44:57 -0700 (PDT)
From: Hugh Dickins <hughd@...gle.com>
To: Andrew Morton <akpm@...ux-foundation.org>
cc: Mike Kravetz <mike.kravetz@...cle.com>,
Mike Rapoport <rppt@...nel.org>,
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Vlastimil Babka <vbabka@...e.cz>, Zi Yan <ziy@...dia.com>,
linux-arm-kernel@...ts.infradead.org, sparclinux@...r.kernel.org,
linuxppc-dev@...ts.ozlabs.org, linux-s390@...r.kernel.org,
linux-kernel@...r.kernel.org, linux-mm@...ck.org
Subject: [PATCH v3 12/13] mm: delete mmap_write_trylock() and
vma_try_start_write()
mmap_write_trylock() and vma_try_start_write() were added just for
khugepaged, but now it has no use for them: delete.
Signed-off-by: Hugh Dickins <hughd@...gle.com>
---
include/linux/mm.h | 17 -----------------
include/linux/mmap_lock.h | 10 ----------
2 files changed, 27 deletions(-)
diff --git a/include/linux/mm.h b/include/linux/mm.h
index 2dd73e4f3d8e..b7b45be616ad 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -692,21 +692,6 @@ static inline void vma_start_write(struct vm_area_struct *vma)
up_write(&vma->vm_lock->lock);
}
-static inline bool vma_try_start_write(struct vm_area_struct *vma)
-{
- int mm_lock_seq;
-
- if (__is_vma_write_locked(vma, &mm_lock_seq))
- return true;
-
- if (!down_write_trylock(&vma->vm_lock->lock))
- return false;
-
- vma->vm_lock_seq = mm_lock_seq;
- up_write(&vma->vm_lock->lock);
- return true;
-}
-
static inline void vma_assert_write_locked(struct vm_area_struct *vma)
{
int mm_lock_seq;
@@ -731,8 +716,6 @@ static inline bool vma_start_read(struct vm_area_struct *vma)
{ return false; }
static inline void vma_end_read(struct vm_area_struct *vma) {}
static inline void vma_start_write(struct vm_area_struct *vma) {}
-static inline bool vma_try_start_write(struct vm_area_struct *vma)
- { return true; }
static inline void vma_assert_write_locked(struct vm_area_struct *vma) {}
static inline void vma_mark_detached(struct vm_area_struct *vma,
bool detached) {}
diff --git a/include/linux/mmap_lock.h b/include/linux/mmap_lock.h
index aab8f1b28d26..d1191f02c7fa 100644
--- a/include/linux/mmap_lock.h
+++ b/include/linux/mmap_lock.h
@@ -112,16 +112,6 @@ static inline int mmap_write_lock_killable(struct mm_struct *mm)
return ret;
}
-static inline bool mmap_write_trylock(struct mm_struct *mm)
-{
- bool ret;
-
- __mmap_lock_trace_start_locking(mm, true);
- ret = down_write_trylock(&mm->mmap_lock) != 0;
- __mmap_lock_trace_acquire_returned(mm, true, ret);
- return ret;
-}
-
static inline void mmap_write_unlock(struct mm_struct *mm)
{
__mmap_lock_trace_released(mm, true);
--
2.35.3
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