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bcb79a51cb
Introduce new helpers for a common pattern: bch2_trans_iter_init(); bch2_btree_iter_peek_slot(); - bch2_bkey_get_iter_type() returns -ENOENT if it doesn't find a key of the correct type - bch2_bkey_get_val_typed() copies the val out of the btree to a (typically stack allocated) variable; it handles the case where the value in the btree is smaller than the current version of the type, zeroing out the remainder. 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.