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81db6ae842
Since the scrub rework introduced by commit2af2aaf982("btrfs: scrub: introduce structure for new BTRFS_STRIPE_LEN based interface") and later commits, scrub only needs one single workqueue, fs_info::scrub_worker. That scrub_wr_completion_workers is initially to handle the delay work after write bios finished. But the new scrub code goes submit-and-wait for write bios, thus all the work are done inside the scrub_worker. The last user of fs_info::scrub_wr_completion_workers is removed in commit16f9399349("btrfs: scrub: remove the old writeback infrastructure"), so we can safely remove the workqueue. Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Qu Wenruo <wqu@suse.com> Reviewed-by: David Sterba <dsterba@suse.com> Signed-off-by: David Sterba <dsterba@suse.com>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.