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f1c2937976
The parity raid write/recover functionality is currently not very well abstracted from the bio submission and completion handling in volumes.c: - the raid56 code directly completes the original btrfs_bio fed into btrfs_submit_bio instead of dispatching back to volumes.c - the raid56 code consumes the bioc and bio_counter references taken by volumes.c, which also leads to special casing of the calls from the scrub code into the raid56 code To fix this up supply a bi_end_io handler that calls back into the volumes.c machinery, which then puts the bioc, decrements the bio_counter and completes the original bio, and updates the scrub code to also take ownership of the bioc and bio_counter in all cases. Reviewed-by: Nikolay Borisov <nborisov@suse.com> Reviewed-by: Anand Jain <anand.jain@oracle.com> Tested-by: Nikolay Borisov <nborisov@suse.com> Tested-by: Johannes Thumshirn <johannes.thumshirn@wdc.com> Signed-off-by: Christoph Hellwig <hch@lst.de> 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.