From 92d83e94365706fa3250b0e43bdab5995ac03046 Mon Sep 17 00:00:00 2001 From: Qu Wenruo <wqu@suse.com> Date: Tue, 26 Jan 2021 16:33:55 +0800 Subject: [PATCH] btrfs: support subpage in btrfs_clone_extent_buffer For btrfs_clone_extent_buffer(), it's mostly the same code of __alloc_dummy_extent_buffer(), except it has extra page copy. So to make it subpage compatible, we only need to: - Call set_extent_buffer_uptodate() instead of SetPageUptodate() This will set correct uptodate bit for subpage and regular sector size cases. Since we're calling set_extent_buffer_uptodate() which will also set EXTENT_BUFFER_UPTODATE bit, we don't need to manually set that bit either. Reviewed-by: Josef Bacik <josef@toxicpanda.com> Signed-off-by: Qu Wenruo <wqu@suse.com> Reviewed-by: David Sterba <dsterba@suse.com> Signed-off-by: David Sterba <dsterba@suse.com> --- fs/btrfs/extent_io.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c index 969de300a95b7..6b27daf62d943 100644 --- a/fs/btrfs/extent_io.c +++ b/fs/btrfs/extent_io.c @@ -5163,11 +5163,10 @@ struct extent_buffer *btrfs_clone_extent_buffer(const struct extent_buffer *src) return NULL; } WARN_ON(PageDirty(p)); - SetPageUptodate(p); new->pages[i] = p; copy_page(page_address(p), page_address(src->pages[i])); } - set_bit(EXTENT_BUFFER_UPTODATE, &new->bflags); + set_extent_buffer_uptodate(new); return new; } -- 2.39.5