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530f745c76
Reorder the operations for split and spanning stores so that new data is placed in the tree prior to marking the old data as dead. This will limit re-walks on dead data to just once instead of a retry loop. The order of operations is as follows: Create the new data, put the new data in place, mark the top node of the old data as dead. Then repair parent links in the reused nodes through all levels of the tree, following the new nodes downwards. Finally walk the top dead node looking for nodes that are no longer used, or subtrees that should be destroyed (marked dead throughout then freed), follow the partially used nodes downwards to discover other dead nodes and subtrees. Link: https://lkml.kernel.org/r/20230804165951.2661157-7-Liam.Howlett@oracle.com Signed-off-by: Liam R. Howlett <Liam.Howlett@oracle.com> Cc: Matthew Wilcox (Oracle) <willy@infradead.org> Cc: Paul E. McKenney <paulmck@kernel.org> Cc: Suren Baghdasaryan <surenb@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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.