From 1f7ef657740344541645349a8bece90cbff898f5 Mon Sep 17 00:00:00 2001
From: Baolin Wang <baolin.wang@linux.alibaba.com>
Date: Wed, 24 Feb 2021 12:01:42 -0800
Subject: [PATCH] mm/filemap: remove unused parameter and change to void type
for replace_page_cache_page()
Since commit 74d609585d8b ("page cache: Add and replace pages using the
XArray") was merged, the replace_page_cache_page() can not fail and always
return 0, we can remove the redundant return value and void it. Moreover
remove the unused gfp_mask.
Link: https://lkml.kernel.org/r/609c30e5274ba15d8b90c872fd0d8ac437a9b2bb.1610071401.git.baolin.wang@linux.alibaba.com
Signed-off-by: Baolin Wang <baolin.wang@linux.alibaba.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Miklos Szeredi <miklos@szeredi.hu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
fs/fuse/dev.c | 6 +-----
include/linux/pagemap.h | 2 +-
mm/filemap.c | 7 +------
3 files changed, 3 insertions(+), 12 deletions(-)
diff --git a/fs/fuse/dev.c b/fs/fuse/dev.c
index 588f8d1240aa..c6636b4c4ccf 100644
--- a/fs/fuse/dev.c
+++ b/fs/fuse/dev.c
@@ -844,11 +844,7 @@ static int fuse_try_move_page(struct fuse_copy_state *cs, struct page **pagep)
if (WARN_ON(PageMlocked(oldpage)))
goto out_fallback_unlock;
- err = replace_page_cache_page(oldpage, newpage, GFP_KERNEL);
- if (err) {
- unlock_page(newpage);
- goto out_put_old;
- }
+ replace_page_cache_page(oldpage, newpage);
get_page(newpage);
diff --git a/include/linux/pagemap.h b/include/linux/pagemap.h
index d5570deff400..74e466e5a2ba 100644
--- a/include/linux/pagemap.h
+++ b/include/linux/pagemap.h
@@ -757,7 +757,7 @@ int add_to_page_cache_lru(struct page *page, struct address_space *mapping,
pgoff_t index, gfp_t gfp_mask);
extern void delete_from_page_cache(struct page *page);
extern void __delete_from_page_cache(struct page *page, void *shadow);
-int replace_page_cache_page(struct page *old, struct page *new, gfp_t gfp_mask);
+void replace_page_cache_page(struct page *old, struct page *new);
void delete_from_page_cache_batch(struct address_space *mapping,
struct pagevec *pvec);
diff --git a/mm/filemap.c b/mm/filemap.c
index 6ff2a3fb0dc7..7dfed3454a2e 100644
--- a/mm/filemap.c
+++ b/mm/filemap.c
@@ -777,7 +777,6 @@ EXPORT_SYMBOL(file_write_and_wait_range);
* replace_page_cache_page - replace a pagecache page with a new one
* @old: page to be replaced
* @new: page to replace with
- * @gfp_mask: allocation mode
*
* This function replaces a page in the pagecache with a new one. On
* success it acquires the pagecache reference for the new page and
@@ -786,10 +785,8 @@ EXPORT_SYMBOL(file_write_and_wait_range);
* caller must do that.
*
* The remove + add is atomic. This function cannot fail.
- *
- * Return: %0
*/
-int replace_page_cache_page(struct page *old, struct page *new, gfp_t gfp_mask)
+void replace_page_cache_page(struct page *old, struct page *new)
{
struct address_space *mapping = old->mapping;
void (*freepage)(struct page *) = mapping->a_ops->freepage;
@@ -824,8 +821,6 @@ int replace_page_cache_page(struct page *old, struct page *new, gfp_t gfp_mask)
if (freepage)
freepage(old);
put_page(old);
-
- return 0;
}
EXPORT_SYMBOL_GPL(replace_page_cache_page);