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Subject[PATCH 4/7] mm: rework the parameter of lock_page_or_retry()
Date
we need the vmf in lock_page_or_retry() in the subsequent patch,
so pass in it directly.

Signed-off-by: Qi Zheng <zhengqi.arch@bytedance.com>
---
include/linux/pagemap.h | 8 +++-----
mm/filemap.c | 6 ++++--
mm/memory.c | 4 ++--
3 files changed, 9 insertions(+), 9 deletions(-)

diff --git a/include/linux/pagemap.h b/include/linux/pagemap.h
index b071babc6629..bc23f6ff4fce 100644
--- a/include/linux/pagemap.h
+++ b/include/linux/pagemap.h
@@ -653,8 +653,7 @@ static inline bool wake_page_match(struct wait_page_queue *wait_page,
extern void __lock_page(struct page *page);
extern int __lock_page_killable(struct page *page);
extern int __lock_page_async(struct page *page, struct wait_page_queue *wait);
-extern int __lock_page_or_retry(struct page *page, struct mm_struct *mm,
- unsigned int flags);
+extern int __lock_page_or_retry(struct page *page, struct vm_fault *vmf);
extern void unlock_page(struct page *page);

/*
@@ -712,11 +711,10 @@ static inline int lock_page_async(struct page *page,
* Return value and mmap_lock implications depend on flags; see
* __lock_page_or_retry().
*/
-static inline int lock_page_or_retry(struct page *page, struct mm_struct *mm,
- unsigned int flags)
+static inline int lock_page_or_retry(struct page *page, struct vm_fault *vmf)
{
might_sleep();
- return trylock_page(page) || __lock_page_or_retry(page, mm, flags);
+ return trylock_page(page) || __lock_page_or_retry(page, vmf);
}

/*
diff --git a/mm/filemap.c b/mm/filemap.c
index 4955641f2cf0..db0184884890 100644
--- a/mm/filemap.c
+++ b/mm/filemap.c
@@ -1686,9 +1686,11 @@ int __lock_page_async(struct page *page, struct wait_page_queue *wait)
* If neither ALLOW_RETRY nor KILLABLE are set, will always return 1
* with the page locked and the mmap_lock unperturbed.
*/
-int __lock_page_or_retry(struct page *page, struct mm_struct *mm,
- unsigned int flags)
+int __lock_page_or_retry(struct page *page, struct vm_fault *vmf)
{
+ unsigned int flags = vmf->flags;
+ struct mm_struct *mm = vmf->vma->vm_mm;
+
if (fault_flag_allow_retry_first(flags)) {
/*
* CAUTION! In this case, mmap_lock is not released
diff --git a/mm/memory.c b/mm/memory.c
index 540f0c9d0970..3bf2636413ee 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -3451,7 +3451,7 @@ static vm_fault_t remove_device_exclusive_entry(struct vm_fault *vmf)
struct vm_area_struct *vma = vmf->vma;
struct mmu_notifier_range range;

- if (!lock_page_or_retry(page, vma->vm_mm, vmf->flags))
+ if (!lock_page_or_retry(page, vmf))
return VM_FAULT_RETRY;
mmu_notifier_range_init_owner(&range, MMU_NOTIFY_EXCLUSIVE, 0, vma,
vma->vm_mm, vmf->address & PAGE_MASK,
@@ -3583,7 +3583,7 @@ vm_fault_t do_swap_page(struct vm_fault *vmf)
goto out_release;
}

- locked = lock_page_or_retry(page, vma->vm_mm, vmf->flags);
+ locked = lock_page_or_retry(page, vmf);

delayacct_clear_flag(current, DELAYACCT_PF_SWAPIN);
if (!locked) {
--
2.11.0
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