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d13f9ee61d
We recently started stashing a copy of the key being overwritten in btree_insert_entry: this is helpful for avoiding multiple calls to bch2_btree_path_peek_slot() and bch2_journal_keys_peek() in the transaction commit path. But it turns out this has a problem - when we run mem/atomic triggers, we've done a couple things that can invalidate the pointer to the old key's value. This makes the optimization of stashing a pointer to the old value questionable, but for now this patch revalidates that pointer before running mem triggers. 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.