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5b9bf43c81
With erasure coding, we now have processes in the background that compact data, causing it to take up less space on disk than when it was written, or potentially when it was read. This means that we can't trust the page cache when it says "we have data on disk taking up x amount of space here" - there's always the potential to race with background compaction. To fix this, just check if we need to add to our disk reservation in the bch2_extent_update() path, in the transaction that will do the btree update. Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com> 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.