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062401f0de
This patch adds support for handling incoming flush and/or FUA bios. Each such bio is assigned to a struct vdo_flush. These are allocated as needed, but there is always one kept in reserve in case allocations fail. In the event of an allocation failure, bios may need to wait for an outstanding flush to complete. The logical address space is partitioned into logical zones, each handled by its own thread. Each zone keeps a list of all data_vios handling write requests for logical addresses in that zone. When a flush bio is processed, each logical zone is informed of the flush. When all of the writes which are in progress at the time of the notification have completed in all zones, the flush bio is then allowed to complete. Co-developed-by: J. corwin Coburn <corwin@hurlbutnet.net> Signed-off-by: J. corwin Coburn <corwin@hurlbutnet.net> Co-developed-by: Michael Sclafani <dm-devel@lists.linux.dev> Signed-off-by: Michael Sclafani <dm-devel@lists.linux.dev> Co-developed-by: Sweet Tea Dorminy <sweettea-kernel@dorminy.me> Signed-off-by: Sweet Tea Dorminy <sweettea-kernel@dorminy.me> Signed-off-by: Matthew Sakai <msakai@redhat.com> Signed-off-by: Mike Snitzer <snitzer@kernel.org> |
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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.