Btrfs: add missing end_page_writeback on submit_extent_page failure
If submit_extent_page() fails in write_one_eb(), we end up with the current page not marked dirty anymore, unlocked and marked for writeback. But we never end up calling end_page_writeback() against the page, which will make calls to filemap_fdatawait_range (e.g. at transaction commit time) hang forever waiting for the writeback bit to be cleared from the page. Signed-off-by: Filipe Manana <fdmanana@suse.com> Reviewed-by: Liu Bo <bo.li.liu@oracle.com> Signed-off-by: Chris Mason <clm@fb.com>
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