From a4fa34cdcd18296c097e2648fe894d28c5cf9709 Mon Sep 17 00:00:00 2001
From: Mike Kravetz <mike.kravetz@oracle.com>
Date: Wed, 24 Feb 2021 12:09:58 -0800
Subject: [PATCH] hugetlbfs: remove special hugetlbfs_set_page_dirty()
Matthew Wilcox noticed that hugetlbfs_set_page_dirty always returns 0.
Instead, it should return 1 or 0 depending on the previous state of the
dirty bit. In addition, the call to compound_head is redundant as it is
also performed in calling routine set_page_dirty.
Replace the hugetlbfs specific routine hugetlbfs_set_page_dirty with
__set_page_dirty_no_writeback as it addresses both of these issues.
Link: https://lkml.kernel.org/r/20201221192542.15732-2-mike.kravetz@oracle.com
Signed-off-by: Mike Kravetz <mike.kravetz@oracle.com>
Suggested-by: Matthew Wilcox <willy@infradead.org>
Cc: Dan Carpenter <dan.carpenter@oracle.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: Davidlohr Bueso <dave@stgolabs.net>
Cc: Michal Hocko <mhocko@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
fs/hugetlbfs/inode.c | 13 +------------
1 file changed, 1 insertion(+), 12 deletions(-)
diff --git a/fs/hugetlbfs/inode.c b/fs/hugetlbfs/inode.c
index 3eca85a4d940b..dc4aceffa2c77 100644
--- a/fs/hugetlbfs/inode.c
+++ b/fs/hugetlbfs/inode.c
@@ -952,17 +952,6 @@ static int hugetlbfs_symlink(struct user_namespace *mnt_userns,
return error;
}
-/*
- * mark the head page dirty
- */
-static int hugetlbfs_set_page_dirty(struct page *page)
-{
- struct page *head = compound_head(page);
-
- SetPageDirty(head);
- return 0;
-}
-
static int hugetlbfs_migrate_page(struct address_space *mapping,
struct page *newpage, struct page *page,
enum migrate_mode mode)
@@ -1150,7 +1139,7 @@ static void hugetlbfs_destroy_inode(struct inode *inode)
static const struct address_space_operations hugetlbfs_aops = {
.write_begin = hugetlbfs_write_begin,
.write_end = hugetlbfs_write_end,
- .set_page_dirty = hugetlbfs_set_page_dirty,
+ .set_page_dirty = __set_page_dirty_no_writeback,
.migratepage = hugetlbfs_migrate_page,
.error_remove_page = hugetlbfs_error_remove_page,
};
--
GitLab