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e3ad29379e
If the btree updates pointing to a bucket were never flushed by the journal before the bucket became empty again, we can reuse the bucket without a journal flush. This tweaks the tracking of journal sequence numbers in alloc keys to implement this optimization: now, we only update the journal sequence number in alloc keys on transitions to and from empty. When a bucket becomes empty, we check if we can tell the journal not to flush entries starting from when the bucket was used. Signed-off-by: Kent Overstreet <kent.overstreet@gmail.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.