f2fs: fix to clear PG_checked flag in set_page_dirty()

[ Upstream commit 66110abc4c931f879d70e83e1281f891699364bf ]

PG_checked flag will be set on data page during GC, later, we can
recognize such page by the flag and migrate page to cold segment.

But previously, we don't clear this flag when invalidating data page,
after page redirtying, we will write it into wrong log.

Let's clear PG_checked flag in set_page_dirty() to avoid this.

Signed-off-by: Weichao Guo <guoweichao@huawei.com>
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c
index 85142e5df88b0d81b5d46ff4eb83c76df1310e2a..e10bd73f0723ec5e95c254eb8dc10912861ef2a7 100644 (file)
--- a/fs/f2fs/data.c
+++ b/fs/f2fs/data.c
@@ -2190,6 +2190,10 @@ static int f2fs_set_data_page_dirty(struct page *page)
        if (!PageUptodate(page))
                SetPageUptodate(page);
 
+       /* don't remain PG_checked flag which was set during GC */
+       if (is_cold_data(page))
+               clear_cold_data(page);
+
        if (f2fs_is_atomic_file(inode) && !f2fs_is_commit_atomic_write(inode)) {
                if (!IS_ATOMIC_WRITTEN_PAGE(page)) {
                        register_inmem_page(inode, page);