diff mbox series

[v4,15/30] btrfs: make btrfs_truncate_block() to be subpage compatible

Message ID 20210531085106.259490-16-wqu@suse.com (mailing list archive)
State New, archived
Headers show
Series btrfs: add data write support for subpage | expand

Commit Message

Qu Wenruo May 31, 2021, 8:50 a.m. UTC 
btrfs_truncate_block() itself is already mostly subpage compatible, the
only missing part is the page dirtying code.

Currently if we have a sector that needs to be truncated, we set the
sector aligned range delalloc, then set the full page dirty.

The problem is, current subpage code requires subpage dirty bit to be
set, or __extent_writepage_io() won't submit bio, thus leads to ordered
extent never to finish.

So this patch will make btrfs_truncate_block() to call
btrfs_page_set_dirty() helper to replace set_page_dirty() to fix the
problem.

Signed-off-by: Qu Wenruo <wqu@suse.com>
---
 fs/btrfs/inode.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index 7bf6ed4b4530..909aadc098ce 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -4946,7 +4946,8 @@  int btrfs_truncate_block(struct btrfs_inode *inode, loff_t from, loff_t len,
 		flush_dcache_page(page);
 	}
 	ClearPageChecked(page);
-	set_page_dirty(page);
+	btrfs_page_set_dirty(fs_info, page, block_start,
+			     block_end + 1 - block_start);
 	unlock_extent_cached(io_tree, block_start, block_end, &cached_state);
 
 	if (only_release_metadata)