btrfs: remove btrfs_folio_end_all_writers()

The function btrfs_folio_end_all_writers() is only utilized in
extent_writepage() as a way to unlock all subpage range (for both
successful submission and error handling).

Meanwhile we have a similar function, btrfs_folio_end_writer_lock().

The difference is, btrfs_folio_end_writer_lock() expects a range that is
a subset of the already locked range.

This limit on btrfs_folio_end_writer_lock() is a little overkilled,
preventing it from being utilized for error paths.

So here we enhance btrfs_folio_end_writer_lock() to accept a superset of
the locked range, and only end the locked subset.
This means we can replace btrfs_folio_end_all_writers() with
btrfs_folio_end_writer_lock() instead.

Signed-off-by: Qu Wenruo <wqu@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c
index c07930986fe5..485d88f9947b 100644
--- a/fs/btrfs/extent_io.c
+++ b/fs/btrfs/extent_io.c
@@ -1466,7 +1466,8 @@ done:
 		mapping_set_error(folio->mapping, ret);
 	}
 
-	btrfs_folio_end_all_writers(inode_to_fs_info(inode), folio);
+	btrfs_folio_end_writer_lock(inode_to_fs_info(inode), folio,
+				    page_start, PAGE_SIZE);
 	ASSERT(ret <= 0);
 	return ret;
 }