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d7dd3fb84f
When we need to add more replicas to an extent, it might be the case that we already have a replica on every device, but some of them are cached. This patch fixes a bug where we'd spin on that extent because the write path fails to find a device we can allocate from: we allow allocating from devices that already have cached replicas on them, and change bch2_data_update_index_update() to drop the cached replica if needed. Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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.