Commit 5a2c6075 authored by Qu Wenruo's avatar Qu Wenruo Committed by David Sterba
Browse files

btrfs: make set_btree_ioerr accept extent buffer and be subpage compatible 



Current set_btree_ioerr() only accepts @page parameter and grabs extent
buffer from page::private.  This works fine for sector size == PAGE_SIZE
case, but not for subpage case.

Add an extra parameter, @eb, for callers to pass extent buffer to this
function, so that subpage code can reuse this function.

And also add subpage special handling to update
btrfs_subpage::error_bitmap.

Signed-off-by: default avatarQu Wenruo <wqu@suse.com>
Reviewed-by: default avatarDavid Sterba <dsterba@suse.com>
Signed-off-by: default avatarDavid Sterba <dsterba@suse.com>
parent 0d27797e

fs/btrfs/extent_io.c

+8 −10
Original line number Diff line number Diff line
@@ -4012,12 +4012,11 @@ static noinline_for_stack int lock_extent_buffer_for_io(struct extent_buffer *eb 
	return ret;

}



static void set_btree_ioerr(struct page *page)

static void set_btree_ioerr(struct page *page, struct extent_buffer *eb)

{

	struct extent_buffer *eb = (struct extent_buffer *)page->private;

	struct btrfs_fs_info *fs_info;

	struct btrfs_fs_info *fs_info = eb->fs_info;



	SetPageError(page);

	btrfs_page_set_error(fs_info, page, eb->start, eb->len);

	if (test_and_set_bit(EXTENT_BUFFER_WRITE_ERR, &eb->bflags))

		return;
@@ -4025,7 +4024,6 @@ static void set_btree_ioerr(struct page *page) 
	 * If we error out, we should add back the dirty_metadata_bytes

	 * to make it consistent.

	 */

	fs_info = eb->fs_info;

	percpu_counter_add_batch(&fs_info->dirty_metadata_bytes,

				 eb->len, fs_info->dirty_metadata_batch);
@@ -4069,13 +4067,13 @@ static void set_btree_ioerr(struct page *page) 
	 */

	switch (eb->log_index) {

	case -1:

		set_bit(BTRFS_FS_BTREE_ERR, &eb->fs_info->flags);

		set_bit(BTRFS_FS_BTREE_ERR, &fs_info->flags);

		break;

	case 0:

		set_bit(BTRFS_FS_LOG1_ERR, &eb->fs_info->flags);

		set_bit(BTRFS_FS_LOG1_ERR, &fs_info->flags);

		break;

	case 1:

		set_bit(BTRFS_FS_LOG2_ERR, &eb->fs_info->flags);

		set_bit(BTRFS_FS_LOG2_ERR, &fs_info->flags);

		break;

	default:

		BUG(); /* unexpected, logic error */
@@ -4100,7 +4098,7 @@ static void end_bio_extent_buffer_writepage(struct bio *bio) 
		if (bio->bi_status ||

		    test_bit(EXTENT_BUFFER_WRITE_ERR, &eb->bflags)) {

			ClearPageUptodate(page);

			set_btree_ioerr(page);

			set_btree_ioerr(page, eb);

		}



		end_page_writeback(page);
@@ -4156,7 +4154,7 @@ static noinline_for_stack int write_one_eb(struct extent_buffer *eb, 
					 end_bio_extent_buffer_writepage,

					 0, 0, 0, false);

		if (ret) {

			set_btree_ioerr(p);

			set_btree_ioerr(p, eb);

			if (PageWriteback(p))

				end_page_writeback(p);

			if (atomic_sub_and_test(num_pages - i, &eb->io_pages))